2018年5月12日 星期六

Docker 安裝流程

Add default user to sudo group :

su
apt -y install sudo
usermod -a -G sudo
logout
id


Docker Install :

sudo apt-get install -y \
     apt-transport-https \
     ca-certificates \
     curl \
     gnupg2 \
     software-properties-common
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/debian \
     $(lsb_release -cs) \
stable"
sudo apt update -y
sudo apt install -y docker-ce
usermod -a -G docker

2018年4月30日 星期一

Linux 網路卡問題排錯 - IP

在 Linux/Unix 底下有幾個關於 IP 配置指令 :

ifconfig - 一般用於配置 IP , Netmask
# ifconfig eth0 192.168.1.1/24
# ifconfig eth0
eth0: flags=4163  mtu 1500
        inet 192.168.1.1  netmask 255.255.255.0  broadcast 192.168.1.255
        ether 00:50:b1:03:a1:00  txqueuelen 1000  (Ethernet)
        RX packets 321985  bytes 415032409 (395.8 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 185822  bytes 19749935 (18.8 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
route - 調整路由
# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         192.168.1.254   0.0.0.0         UG    100    0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0
ip - 跟 ip 有關係的都可以透過此指令
# ip route show
default via 192.168.1.1 dev eth0  proto static  metric 100
192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.1  metric 100
# ip neigh show
192.168.1.254 dev eth0 lladdr 00:50:b1:03:a1:01 REACHABLE
# ip link show
1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:50:b1:03:a1:00 brd ff:ff:ff:ff:ff:ff
# ip rule show
0: from all lookup local
32766: from all lookup main
32767: from all lookup default

Linux 網路卡問題排錯 - 實體層

ethtool - 調整傳輸設定(定速, 全雙工/半雙工, 光功率診斷/設定, 無線網路強度診斷...)
# ethtool enp4s0f2
Settings for eth0:
 Supported ports: [ TP MII ]
 Supported link modes:   10baseT/Half 10baseT/Full
                         100baseT/Half 100baseT/Full
                         1000baseT/Half 1000baseT/Full
 Supported pause frame use: No
 Supports auto-negotiation: Yes
 Advertised link modes:  10baseT/Half 10baseT/Full
                         100baseT/Half 100baseT/Full
                         1000baseT/Half 1000baseT/Full
 Advertised pause frame use: Symmetric Receive-only
 Advertised auto-negotiation: Yes
 Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                      100baseT/Half 100baseT/Full
 Link partner advertised pause frame use: Symmetric
 Link partner advertised auto-negotiation: Yes
 Speed: 100Mb/s
 Duplex: Full
 Port: MII
 PHYAD: 0
 Transceiver: internal
 Auto-negotiation: on
 Supports Wake-on: pumbg
 Wake-on: g
 Current message level: 0x00000033 (51)
          drv probe ifdown ifup
 Link detected: yes

mii-tool - 調整傳輸設定(定速, 更改 MAC, 更改允許速度)

# mii-tool -v enp4s0f2
enp4s0f2: negotiated 1000baseT-HD flow-control, link ok
  product info: vendor 00:07:32, model 17 rev 5
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

2016年12月16日 星期五

2008 to 2016 網管系統的演進

大學教科書 Computer Networking : A Top-Down Approach , 這本已經出到第六版了 ; 有興趣的可以 Google "computer networking a top-down approach" 應該可以撿到 PDF .

圍繞著幾個主題 :
1. 自動路徑切換, 通訊協定, 路由變更, 硬體電路備援這三大項, 在不同層面增加系統的可用度(提高服務品質與減低額外費用)
2. 主機系統監測, 可用性, 系統承受容量, 應用程式狀態變動, 即時同步的分析, 讓人可以透過系統從新分配工作.
3. 網路流量轉移, 對於 WAN 頻寬的合併, 自動流量重新分配, 頻寬管控和粒度分析, 而後針對不同行為給予獎勵與限制.
4. 資訊安全的細膩度, 人員日常行為分析和異常判讀, 不明流量的監控與反制, 資料管制與外洩控管.

大致上是如此跟大家報告一下.

2016年8月19日 星期五

Linux Ethernet Bonding 配置流程 - 前言2 , 配置極限

配置極限的原因有以下幾個 :

1. Hash : 會導致流量分配不均
例如傳統 EtherChannel 因為是透過 MAC 進行流量分配, 因此會有單數 MAC 分配到 A 網卡 , 雙數 MAC 分配到 B 網卡的情形 .
解決方法 : 將 Layer3, Layer4 和其他(VLAN ID)的相關的變數納入或是改用輪替模式.

2. 介面速度 : 線路品質, 網卡效能與支援
請參考 Physical Layer – Transmission Media CS442.
物理層依靠的是線路品質, 例如衰減跟干擾降低, 干擾因素愈少重傳的機會就愈少.
設備端收發晶片的敏感度和糾錯率愈高, 愈早能把東西傳出去.

3. 交換機與路由器的支援, 鏈路的整體速度 : 延遲時間
設備會將封包儲存然後轉傳 , 中間經過的時間長短會影響到效率 ; 等級愈高設備交換時間愈短 , 能忍受的封包數目愈高 .

2016年8月5日 星期五

新版 NVIDIA Optimus 啟用方法 (Intel + NVIDIA)

在傳統的環境底下, 僅會有單一獨立顯卡, 所以我們僅需要執行以下指令就會進行安裝
# apt-get install nvidia-driver
安裝之後因為設備特性的不同, 有些會同時有多張不同廠牌顯卡, 如 Intel + NVIDIA .
3D 加速的支援也不同.

所以我們還要安裝 NVIDIA Optimus support 的軟體
# apt-get install bumblebee bumblebee-nvidia
再把使用者加入 bumblebee 的群組
# gpasswd -a <使用者名稱> bumblebee 
再執行以下指令切換至 NVIDIA , 其中 vblank_mode=0 是關閉 XWindow 的垂直同步 ,
可以改善執行效能 , 可以避免遊戲反應遲鈍問題.
vblank_mode=0 optirun bash
啟用前

$ glxinfo
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile,
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,
    GLX_ARB_framebuffer_sRGB, GLX_ARB_multisample,
    GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile,
    GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB,
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info,
    GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
    GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_swap_control
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile,
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,
    GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample,
    GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile,
    GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float,
    GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context,
    GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control,
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
    GLX_SGIX_visual_select_group, GLX_SGI_make_current_read,
    GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile,
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,
    GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample,
    GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile,
    GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float,
    GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context,
    GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control,
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
    GLX_SGIX_visual_select_group, GLX_SGI_make_current_read,
    GLX_SGI_swap_control, GLX_SGI_video_sync
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel Open Source Technology Center (0x8086)
    Device: Mesa DRI Intel(R) Ivybridge Mobile  (0x166)
    Version: 11.2.2
    Accelerated: yes
    Video memory: 1536MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.2
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
    GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth,
    GL_AMD_draw_buffers_blend, GL_AMD_performance_monitor,
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax,
    GL_AMD_vertex_shader_layer, GL_AMD_vertex_shader_viewport_index,
    GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5,
    GL_APPLE_object_purgeable, GL_ARB_ES2_compatibility,
    GL_ARB_ES3_compatibility, GL_ARB_arrays_of_arrays, GL_ARB_base_instance,
    GL_ARB_blend_func_extended, GL_ARB_buffer_storage,
    GL_ARB_clear_buffer_object, GL_ARB_clear_texture, GL_ARB_clip_control,
    GL_ARB_compressed_texture_pixel_storage, GL_ARB_compute_shader,
    GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth,
    GL_ARB_copy_buffer, GL_ARB_copy_image, GL_ARB_debug_output,
    GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, GL_ARB_derivative_control,
    GL_ARB_direct_state_access, GL_ARB_draw_buffers,
    GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex,
    GL_ARB_draw_indirect, GL_ARB_draw_instanced,
    GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location,
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_layer_viewport,
    GL_ARB_fragment_shader, GL_ARB_framebuffer_no_attachments,
    GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB,
    GL_ARB_get_program_binary, GL_ARB_get_texture_sub_image,
    GL_ARB_gpu_shader5, GL_ARB_half_float_pixel, GL_ARB_half_float_vertex,
    GL_ARB_instanced_arrays, GL_ARB_internalformat_query,
    GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment,
    GL_ARB_map_buffer_range, GL_ARB_multi_bind, GL_ARB_multi_draw_indirect,
    GL_ARB_occlusion_query2, GL_ARB_pipeline_statistics_query,
    GL_ARB_pixel_buffer_object, GL_ARB_point_sprite,
    GL_ARB_program_interface_query, GL_ARB_provoking_vertex,
    GL_ARB_robustness, GL_ARB_sample_shading, GL_ARB_sampler_objects,
    GL_ARB_seamless_cube_map, GL_ARB_seamless_cubemap_per_texture,
    GL_ARB_separate_shader_objects, GL_ARB_shader_atomic_counters,
    GL_ARB_shader_bit_encoding, GL_ARB_shader_clock,
    GL_ARB_shader_draw_parameters, GL_ARB_shader_image_load_store,
    GL_ARB_shader_image_size, GL_ARB_shader_objects,
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_subroutine,
    GL_ARB_shader_texture_image_samples, GL_ARB_shader_texture_lod,
    GL_ARB_shading_language_420pack, GL_ARB_shading_language_packing,
    GL_ARB_sync, GL_ARB_tessellation_shader, GL_ARB_texture_barrier,
    GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_object_rgb32,
    GL_ARB_texture_buffer_range, GL_ARB_texture_compression_bptc,
    GL_ARB_texture_compression_rgtc, GL_ARB_texture_cube_map_array,
    GL_ARB_texture_float, GL_ARB_texture_gather,
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_multisample,
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_levels,
    GL_ARB_texture_query_lod, GL_ARB_texture_rectangle, GL_ARB_texture_rg,
    GL_ARB_texture_rgb10_a2ui, GL_ARB_texture_storage,
    GL_ARB_texture_storage_multisample, GL_ARB_texture_swizzle,
    GL_ARB_texture_view, GL_ARB_timer_query, GL_ARB_transform_feedback2,
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced,
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra,
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_binding,
    GL_ARB_vertex_shader, GL_ARB_vertex_type_10f_11f_11f_rev,
    GL_ARB_vertex_type_2_10_10_10_rev, GL_ARB_viewport_array,
    GL_ATI_blend_equation_separate, GL_ATI_texture_float, GL_EXT_abgr,
    GL_EXT_blend_equation_separate, GL_EXT_draw_buffers2,
    GL_EXT_draw_instanced, GL_EXT_framebuffer_blit,
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled,
    GL_EXT_framebuffer_sRGB, GL_EXT_packed_depth_stencil, GL_EXT_packed_float,
    GL_EXT_pixel_buffer_object, GL_EXT_polygon_offset_clamp,
    GL_EXT_provoking_vertex, GL_EXT_shader_integer_mix,
    GL_EXT_shader_samples_identical, GL_EXT_texture_array,
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc,
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_filter_anisotropic,
    GL_EXT_texture_integer, GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_decode,
    GL_EXT_texture_shared_exponent, GL_EXT_texture_snorm,
    GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_transform_feedback,
    GL_EXT_vertex_array_bgra, GL_IBM_multimode_draw_arrays,
    GL_INTEL_performance_query, GL_KHR_context_flush_control, GL_KHR_debug,
    GL_MESA_pack_invert, GL_MESA_texture_signed_rgba,
    GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_packed_depth_stencil,
    GL_NV_texture_barrier, GL_OES_EGL_image, GL_OES_read_format, GL_S3_s3tc
OpenGL version string: 3.0 Mesa 11.2.2
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
    GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth,
    GL_AMD_draw_buffers_blend, GL_AMD_performance_monitor,
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax,
    GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5,
    GL_APPLE_object_purgeable, GL_APPLE_packed_pixels,
    GL_APPLE_vertex_array_object, GL_ARB_ES2_compatibility,
    GL_ARB_ES3_compatibility, GL_ARB_arrays_of_arrays,
    GL_ARB_blend_func_extended, GL_ARB_buffer_storage,
    GL_ARB_clear_buffer_object, GL_ARB_clear_texture, GL_ARB_clip_control,
    GL_ARB_color_buffer_float, GL_ARB_compressed_texture_pixel_storage,
    GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth,
    GL_ARB_copy_buffer, GL_ARB_copy_image, GL_ARB_debug_output,
    GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, GL_ARB_depth_texture,
    GL_ARB_derivative_control, GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend,
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_instanced,
    GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location,
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_program,
    GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
    GL_ARB_framebuffer_no_attachments, GL_ARB_framebuffer_object,
    GL_ARB_framebuffer_sRGB, GL_ARB_get_program_binary,
    GL_ARB_get_texture_sub_image, GL_ARB_half_float_pixel,
    GL_ARB_half_float_vertex, GL_ARB_instanced_arrays,
    GL_ARB_internalformat_query, GL_ARB_invalidate_subdata,
    GL_ARB_map_buffer_alignment, GL_ARB_map_buffer_range, GL_ARB_multi_bind,
    GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query,
    GL_ARB_occlusion_query2, GL_ARB_pipeline_statistics_query,
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite,
    GL_ARB_program_interface_query, GL_ARB_provoking_vertex,
    GL_ARB_robustness, GL_ARB_sample_shading, GL_ARB_sampler_objects,
    GL_ARB_seamless_cube_map, GL_ARB_seamless_cubemap_per_texture,
    GL_ARB_separate_shader_objects, GL_ARB_shader_atomic_counters,
    GL_ARB_shader_bit_encoding, GL_ARB_shader_clock,
    GL_ARB_shader_draw_parameters, GL_ARB_shader_image_load_store,
    GL_ARB_shader_image_size, GL_ARB_shader_objects,
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_texture_image_samples,
    GL_ARB_shader_texture_lod, GL_ARB_shading_language_100,
    GL_ARB_shading_language_420pack, GL_ARB_shading_language_packing,
    GL_ARB_shadow, GL_ARB_sync, GL_ARB_texture_barrier,
    GL_ARB_texture_border_clamp, GL_ARB_texture_compression,
    GL_ARB_texture_compression_bptc, GL_ARB_texture_compression_rgtc,
    GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array,
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine,
    GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3,
    GL_ARB_texture_float, GL_ARB_texture_gather,
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_mirrored_repeat,
    GL_ARB_texture_multisample, GL_ARB_texture_non_power_of_two,
    GL_ARB_texture_query_levels, GL_ARB_texture_query_lod,
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui,
    GL_ARB_texture_storage, GL_ARB_texture_storage_multisample,
    GL_ARB_texture_swizzle, GL_ARB_texture_view, GL_ARB_timer_query,
    GL_ARB_transform_feedback2, GL_ARB_transform_feedback3,
    GL_ARB_transform_feedback_instanced, GL_ARB_transpose_matrix,
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra,
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_binding,
    GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader,
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev,
    GL_ARB_window_pos, GL_ATI_blend_equation_separate, GL_ATI_draw_buffers,
    GL_ATI_separate_stencil, GL_ATI_texture_env_combine3,
    GL_ATI_texture_float, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color,
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate,
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array,
    GL_EXT_copy_texture, GL_EXT_draw_buffers2, GL_EXT_draw_instanced,
    GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_blit,
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled,
    GL_EXT_framebuffer_object, GL_EXT_framebuffer_sRGB,
    GL_EXT_gpu_program_parameters, GL_EXT_multi_draw_arrays,
    GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_packed_pixels,
    GL_EXT_pixel_buffer_object, GL_EXT_point_parameters,
    GL_EXT_polygon_offset, GL_EXT_polygon_offset_clamp,
    GL_EXT_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color,
    GL_EXT_separate_specular_color, GL_EXT_shader_integer_mix,
    GL_EXT_shader_samples_identical, GL_EXT_shadow_funcs,
    GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_subtexture,
    GL_EXT_texture, GL_EXT_texture3D, GL_EXT_texture_array,
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc,
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map,
    GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add,
    GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3,
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer,
    GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_texture_rectangle,
    GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_decode,
    GL_EXT_texture_shared_exponent, GL_EXT_texture_snorm,
    GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_transform_feedback,
    GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
    GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip,
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate,
    GL_INTEL_performance_query, GL_KHR_context_flush_control, GL_KHR_debug,
    GL_MESA_pack_invert, GL_MESA_texture_signed_rgba, GL_MESA_window_pos,
    GL_NV_blend_square, GL_NV_conditional_render, GL_NV_depth_clamp,
    GL_NV_light_max_exponent, GL_NV_packed_depth_stencil,
    GL_NV_primitive_restart, GL_NV_texgen_reflection, GL_NV_texture_barrier,
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_OES_EGL_image,
    GL_OES_read_format, GL_S3_s3tc, GL_SGIS_generate_mipmap,
    GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
    GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.2.2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:
    GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5,
    GL_APPLE_texture_max_level, GL_EXT_blend_func_extended,
    GL_EXT_blend_minmax, GL_EXT_color_buffer_float,
    GL_EXT_discard_framebuffer, GL_EXT_draw_buffers,
    GL_EXT_draw_elements_base_vertex, GL_EXT_map_buffer_range,
    GL_EXT_multi_draw_arrays, GL_EXT_read_format_bgra,
    GL_EXT_separate_shader_objects, GL_EXT_shader_integer_mix,
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_filter_anisotropic,
    GL_EXT_texture_format_BGRA8888, GL_EXT_texture_rg,
    GL_EXT_texture_type_2_10_10_10_REV, GL_EXT_unpack_subimage,
    GL_INTEL_performance_query, GL_KHR_context_flush_control, GL_KHR_debug,
    GL_NV_draw_buffers, GL_NV_fbo_color_attachments, GL_NV_read_buffer,
    GL_NV_read_depth, GL_NV_read_depth_stencil, GL_NV_read_stencil,
    GL_OES_EGL_image, GL_OES_EGL_image_external, GL_OES_EGL_sync,
    GL_OES_compressed_ETC1_RGB8_texture, GL_OES_depth24, GL_OES_depth_texture,
    GL_OES_depth_texture_cube_map, GL_OES_draw_elements_base_vertex,
    GL_OES_element_index_uint, GL_OES_fbo_render_mipmap,
    GL_OES_get_program_binary, GL_OES_mapbuffer, GL_OES_packed_depth_stencil,
    GL_OES_rgb8_rgba8, GL_OES_standard_derivatives, GL_OES_stencil8,
    GL_OES_surfaceless_context, GL_OES_texture_3D, GL_OES_texture_float,
    GL_OES_texture_float_linear, GL_OES_texture_half_float,
    GL_OES_texture_half_float_linear, GL_OES_texture_npot,
    GL_OES_vertex_array_object
40 GLX Visuals
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
...
64 GLXFBConfigs:
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
...

啟用後

$ glxinfo
name of display: :0.0
ATTENTION: default value of option vblank_mode overridden by environment.
ATTENTION: default value of option vblank_mode overridden by environment.
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
    GLX_ARB_context_flush_control, GLX_ARB_create_context,
    GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness,
    GLX_ARB_fbconfig_float, GLX_ARB_multisample, GLX_EXT_buffer_age,
    GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile,
    GLX_EXT_framebuffer_sRGB, GLX_EXT_stereo_tree, GLX_EXT_swap_control,
    GLX_EXT_swap_control_tear, GLX_EXT_texture_from_pixmap,
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_NV_copy_image,
    GLX_NV_delay_before_swap, GLX_NV_float_buffer,
    GLX_NV_multisample_coverage, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
    GLX_SGI_swap_control, GLX_SGI_video_sync
client glx vendor string: primus
client glx version string: 1.4
client glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile,
    GLX_ARB_get_proc_address
GLX version: 1.4
GLX extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile,
    GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GT 720M/PCIe/SSE2
OpenGL core profile version string: 4.5.0 NVIDIA 352.79
OpenGL core profile shading language version string: 4.50 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
    GL_AMD_multi_draw_indirect, GL_ARB_ES2_compatibility,
    GL_ARB_ES3_1_compatibility, GL_ARB_ES3_compatibility,
    GL_ARB_arrays_of_arrays, GL_ARB_base_instance, GL_ARB_blend_func_extended,
    GL_ARB_buffer_storage, GL_ARB_clear_buffer_object, GL_ARB_clear_texture,
    GL_ARB_clip_control, GL_ARB_color_buffer_float,
    GL_ARB_compressed_texture_pixel_storage, GL_ARB_compute_shader,
    GL_ARB_compute_variable_group_size, GL_ARB_conditional_render_inverted,
    GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_copy_image,
    GL_ARB_cull_distance, GL_ARB_debug_output, GL_ARB_depth_buffer_float,
    GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_derivative_control,
    GL_ARB_direct_state_access, GL_ARB_draw_buffers,
    GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex,
    GL_ARB_draw_indirect, GL_ARB_draw_instanced, GL_ARB_enhanced_layouts,
    GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location,
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_layer_viewport,
    GL_ARB_fragment_program, GL_ARB_fragment_program_shadow,
    GL_ARB_fragment_shader, GL_ARB_framebuffer_no_attachments,
    GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB,
    GL_ARB_geometry_shader4, GL_ARB_get_program_binary,
    GL_ARB_get_texture_sub_image, GL_ARB_gpu_shader5, GL_ARB_gpu_shader_fp64,
    GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_imaging,
    GL_ARB_indirect_parameters, GL_ARB_instanced_arrays,
    GL_ARB_internalformat_query, GL_ARB_internalformat_query2,
    GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment,
    GL_ARB_map_buffer_range, GL_ARB_multi_bind, GL_ARB_multi_draw_indirect,
    GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query,
    GL_ARB_occlusion_query2, GL_ARB_pipeline_statistics_query,
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite,
    GL_ARB_program_interface_query, GL_ARB_provoking_vertex,
    GL_ARB_query_buffer_object, GL_ARB_robust_buffer_access_behavior,
    GL_ARB_robustness, GL_ARB_sample_shading, GL_ARB_sampler_objects,
    GL_ARB_seamless_cube_map, GL_ARB_separate_shader_objects,
    GL_ARB_shader_atomic_counters, GL_ARB_shader_bit_encoding,
    GL_ARB_shader_draw_parameters, GL_ARB_shader_group_vote,
    GL_ARB_shader_image_load_store, GL_ARB_shader_image_size,
    GL_ARB_shader_objects, GL_ARB_shader_precision,
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_subroutine,
    GL_ARB_shader_texture_image_samples, GL_ARB_shader_texture_lod,
    GL_ARB_shading_language_100, GL_ARB_shading_language_420pack,
    GL_ARB_shading_language_include, GL_ARB_shading_language_packing,
    GL_ARB_shadow, GL_ARB_sparse_buffer, GL_ARB_sparse_texture,
    GL_ARB_stencil_texturing, GL_ARB_sync, GL_ARB_tessellation_shader,
    GL_ARB_texture_barrier, GL_ARB_texture_border_clamp,
    GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_object_rgb32,
    GL_ARB_texture_buffer_range, GL_ARB_texture_compression,
    GL_ARB_texture_compression_bptc, GL_ARB_texture_compression_rgtc,
    GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array,
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine,
    GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3,
    GL_ARB_texture_float, GL_ARB_texture_gather,
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_mirrored_repeat,
    GL_ARB_texture_multisample, GL_ARB_texture_non_power_of_two,
    GL_ARB_texture_query_levels, GL_ARB_texture_query_lod,
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui,
    GL_ARB_texture_stencil8, GL_ARB_texture_storage,
    GL_ARB_texture_storage_multisample, GL_ARB_texture_swizzle,
    GL_ARB_texture_view, GL_ARB_timer_query, GL_ARB_transform_feedback2,
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced,
    GL_ARB_transform_feedback_overflow_query, GL_ARB_transpose_matrix,
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra,
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_64bit,
    GL_ARB_vertex_attrib_binding, GL_ARB_vertex_buffer_object,
    GL_ARB_vertex_program, GL_ARB_vertex_shader,
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev,
    GL_ARB_viewport_array, GL_ARB_window_pos, GL_ATI_draw_buffers,
    GL_ATI_texture_float, GL_ATI_texture_mirror_once,
    GL_EXTX_framebuffer_mixed_formats, GL_EXT_Cg_shader, GL_EXT_abgr,
    GL_EXT_bgra, GL_EXT_bindable_uniform, GL_EXT_blend_color,
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate,
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array,
    GL_EXT_depth_bounds_test, GL_EXT_direct_state_access,
    GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_draw_range_elements,
    GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample,
    GL_EXT_framebuffer_multisample_blit_scaled, GL_EXT_framebuffer_object,
    GL_EXT_framebuffer_sRGB, GL_EXT_geometry_shader4,
    GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4,
    GL_EXT_import_sync_object, GL_EXT_multi_draw_arrays,
    GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_packed_pixels,
    GL_EXT_pixel_buffer_object, GL_EXT_point_parameters,
    GL_EXT_polygon_offset_clamp, GL_EXT_provoking_vertex,
    GL_EXT_rescale_normal, GL_EXT_secondary_color,
    GL_EXT_separate_shader_objects, GL_EXT_separate_specular_color,
    GL_EXT_shader_image_load_store, GL_EXT_shader_integer_mix,
    GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap,
    GL_EXT_texture3D, GL_EXT_texture_array, GL_EXT_texture_buffer_object,
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_latc,
    GL_EXT_texture_compression_rgtc, GL_EXT_texture_compression_s3tc,
    GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp,
    GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
    GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
    GL_EXT_texture_integer, GL_EXT_texture_lod, GL_EXT_texture_lod_bias,
    GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, GL_EXT_texture_sRGB,
    GL_EXT_texture_sRGB_decode, GL_EXT_texture_shared_exponent,
    GL_EXT_texture_storage, GL_EXT_texture_swizzle, GL_EXT_timer_query,
    GL_EXT_transform_feedback2, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
    GL_EXT_vertex_attrib_64bit, GL_EXT_x11_sync_object, GL_IBM_rasterpos_clip,
    GL_IBM_texture_mirrored_repeat, GL_KHR_blend_equation_advanced,
    GL_KHR_context_flush_control, GL_KHR_debug,
    GL_KHR_robust_buffer_access_behavior, GL_KHR_robustness,
    GL_KTX_buffer_region, GL_NVX_conditional_render, GL_NVX_gpu_memory_info,
    GL_NV_ES1_1_compatibility, GL_NV_ES3_1_compatibility,
    GL_NV_bindless_multi_draw_indirect,
    GL_NV_bindless_multi_draw_indirect_count, GL_NV_blend_equation_advanced,
    GL_NV_blend_square, GL_NV_command_list, GL_NV_compute_program5,
    GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image,
    GL_NV_depth_buffer_float, GL_NV_depth_clamp, GL_NV_draw_texture,
    GL_NV_explicit_multisample, GL_NV_fence, GL_NV_float_buffer,
    GL_NV_fog_distance, GL_NV_fragment_program, GL_NV_fragment_program2,
    GL_NV_fragment_program_option, GL_NV_framebuffer_multisample_coverage,
    GL_NV_geometry_shader4, GL_NV_gpu_program4, GL_NV_gpu_program4_1,
    GL_NV_gpu_program5, GL_NV_gpu_program5_mem_extended,
    GL_NV_gpu_program_fp64, GL_NV_gpu_shader5, GL_NV_half_float,
    GL_NV_internalformat_sample_query, GL_NV_light_max_exponent,
    GL_NV_multisample_coverage, GL_NV_multisample_filter_hint,
    GL_NV_occlusion_query, GL_NV_packed_depth_stencil,
    GL_NV_parameter_buffer_object, GL_NV_parameter_buffer_object2,
    GL_NV_path_rendering, GL_NV_pixel_data_range, GL_NV_point_sprite,
    GL_NV_primitive_restart, GL_NV_register_combiners,
    GL_NV_register_combiners2, GL_NV_shader_atomic_counters,
    GL_NV_shader_atomic_float, GL_NV_shader_buffer_load,
    GL_NV_shader_storage_buffer_object, GL_NV_shader_thread_group,
    GL_NV_texgen_reflection, GL_NV_texture_barrier,
    GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4,
    GL_NV_texture_multisample, GL_NV_texture_rectangle, GL_NV_texture_shader,
    GL_NV_texture_shader2, GL_NV_texture_shader3, GL_NV_transform_feedback,
    GL_NV_transform_feedback2, GL_NV_uniform_buffer_unified_memory,
    GL_NV_vdpau_interop, GL_NV_vertex_array_range, GL_NV_vertex_array_range2,
    GL_NV_vertex_attrib_integer_64bit, GL_NV_vertex_buffer_unified_memory,
    GL_NV_vertex_program, GL_NV_vertex_program1_1, GL_NV_vertex_program2,
    GL_NV_vertex_program2_option, GL_NV_vertex_program3, GL_S3_s3tc,
    GL_SGIS_generate_mipmap, GL_SGIS_texture_lod, GL_SGIX_depth_texture,
    GL_SGIX_shadow, GL_SUN_slice_accum
OpenGL version string: 4.5.0 NVIDIA 352.79
OpenGL shading language version string: 4.50 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)
OpenGL extensions:
    GL_AMD_multi_draw_indirect, GL_ARB_ES2_compatibility,
    GL_ARB_ES3_1_compatibility, GL_ARB_ES3_compatibility,
    GL_ARB_arrays_of_arrays, GL_ARB_base_instance, GL_ARB_blend_func_extended,
    GL_ARB_buffer_storage, GL_ARB_clear_buffer_object, GL_ARB_clear_texture,
    GL_ARB_clip_control, GL_ARB_color_buffer_float, GL_ARB_compatibility,
    GL_ARB_compressed_texture_pixel_storage, GL_ARB_compute_shader,
    GL_ARB_compute_variable_group_size, GL_ARB_conditional_render_inverted,
    GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_copy_image,
    GL_ARB_cull_distance, GL_ARB_debug_output, GL_ARB_depth_buffer_float,
    GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_derivative_control,
    GL_ARB_direct_state_access, GL_ARB_draw_buffers,
    GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex,
    GL_ARB_draw_indirect, GL_ARB_draw_instanced, GL_ARB_enhanced_layouts,
    GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location,
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_layer_viewport,
    GL_ARB_fragment_program, GL_ARB_fragment_program_shadow,
    GL_ARB_fragment_shader, GL_ARB_framebuffer_no_attachments,
    GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB,
    GL_ARB_geometry_shader4, GL_ARB_get_program_binary,
    GL_ARB_get_texture_sub_image, GL_ARB_gpu_shader5, GL_ARB_gpu_shader_fp64,
    GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_imaging,
    GL_ARB_indirect_parameters, GL_ARB_instanced_arrays,
    GL_ARB_internalformat_query, GL_ARB_internalformat_query2,
    GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment,
    GL_ARB_map_buffer_range, GL_ARB_multi_bind, GL_ARB_multi_draw_indirect,
    GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query,
    GL_ARB_occlusion_query2, GL_ARB_pipeline_statistics_query,
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite,
    GL_ARB_program_interface_query, GL_ARB_provoking_vertex,
    GL_ARB_query_buffer_object, GL_ARB_robust_buffer_access_behavior,
    GL_ARB_robustness, GL_ARB_sample_shading, GL_ARB_sampler_objects,
    GL_ARB_seamless_cube_map, GL_ARB_separate_shader_objects,
    GL_ARB_shader_atomic_counters, GL_ARB_shader_bit_encoding,
    GL_ARB_shader_draw_parameters, GL_ARB_shader_group_vote,
    GL_ARB_shader_image_load_store, GL_ARB_shader_image_size,
    GL_ARB_shader_objects, GL_ARB_shader_precision,
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_subroutine,
    GL_ARB_shader_texture_image_samples, GL_ARB_shader_texture_lod,
    GL_ARB_shading_language_100, GL_ARB_shading_language_420pack,
    GL_ARB_shading_language_include, GL_ARB_shading_language_packing,
    GL_ARB_shadow, GL_ARB_sparse_buffer, GL_ARB_sparse_texture,
    GL_ARB_stencil_texturing, GL_ARB_sync, GL_ARB_tessellation_shader,
    GL_ARB_texture_barrier, GL_ARB_texture_border_clamp,
    GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_object_rgb32,
    GL_ARB_texture_buffer_range, GL_ARB_texture_compression,
    GL_ARB_texture_compression_bptc, GL_ARB_texture_compression_rgtc,
    GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array,
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine,
    GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3,
    GL_ARB_texture_float, GL_ARB_texture_gather,
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_mirrored_repeat,
    GL_ARB_texture_multisample, GL_ARB_texture_non_power_of_two,
    GL_ARB_texture_query_levels, GL_ARB_texture_query_lod,
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui,
    GL_ARB_texture_stencil8, GL_ARB_texture_storage,
    GL_ARB_texture_storage_multisample, GL_ARB_texture_swizzle,
    GL_ARB_texture_view, GL_ARB_timer_query, GL_ARB_transform_feedback2,
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced,
    GL_ARB_transform_feedback_overflow_query, GL_ARB_transpose_matrix,
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra,
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_64bit,
    GL_ARB_vertex_attrib_binding, GL_ARB_vertex_buffer_object,
    GL_ARB_vertex_program, GL_ARB_vertex_shader,
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev,
    GL_ARB_viewport_array, GL_ARB_window_pos, GL_ATI_draw_buffers,
    GL_ATI_texture_float, GL_ATI_texture_mirror_once,
    GL_EXTX_framebuffer_mixed_formats, GL_EXT_Cg_shader, GL_EXT_abgr,
    GL_EXT_bgra, GL_EXT_bindable_uniform, GL_EXT_blend_color,
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate,
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array,
    GL_EXT_depth_bounds_test, GL_EXT_direct_state_access,
    GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_draw_range_elements,
    GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample,
    GL_EXT_framebuffer_multisample_blit_scaled, GL_EXT_framebuffer_object,
    GL_EXT_framebuffer_sRGB, GL_EXT_geometry_shader4,
    GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4,
    GL_EXT_import_sync_object, GL_EXT_multi_draw_arrays,
    GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_packed_pixels,
    GL_EXT_pixel_buffer_object, GL_EXT_point_parameters,
    GL_EXT_polygon_offset_clamp, GL_EXT_provoking_vertex,
    GL_EXT_rescale_normal, GL_EXT_secondary_color,
    GL_EXT_separate_shader_objects, GL_EXT_separate_specular_color,
    GL_EXT_shader_image_load_store, GL_EXT_shader_integer_mix,
    GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap,
    GL_EXT_texture3D, GL_EXT_texture_array, GL_EXT_texture_buffer_object,
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_latc,
    GL_EXT_texture_compression_rgtc, GL_EXT_texture_compression_s3tc,
    GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp,
    GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
    GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
    GL_EXT_texture_integer, GL_EXT_texture_lod, GL_EXT_texture_lod_bias,
    GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, GL_EXT_texture_sRGB,
    GL_EXT_texture_sRGB_decode, GL_EXT_texture_shared_exponent,
    GL_EXT_texture_storage, GL_EXT_texture_swizzle, GL_EXT_timer_query,
    GL_EXT_transform_feedback2, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
    GL_EXT_vertex_attrib_64bit, GL_EXT_x11_sync_object, GL_IBM_rasterpos_clip,
    GL_IBM_texture_mirrored_repeat, GL_KHR_blend_equation_advanced,
    GL_KHR_context_flush_control, GL_KHR_debug,
    GL_KHR_robust_buffer_access_behavior, GL_KHR_robustness,
    GL_KTX_buffer_region, GL_NVX_conditional_render, GL_NVX_gpu_memory_info,
    GL_NV_ES1_1_compatibility, GL_NV_ES3_1_compatibility,
    GL_NV_bindless_multi_draw_indirect,
    GL_NV_bindless_multi_draw_indirect_count, GL_NV_blend_equation_advanced,
    GL_NV_blend_square, GL_NV_command_list, GL_NV_compute_program5,
    GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image,
    GL_NV_depth_buffer_float, GL_NV_depth_clamp, GL_NV_draw_texture,
    GL_NV_explicit_multisample, GL_NV_fence, GL_NV_float_buffer,
    GL_NV_fog_distance, GL_NV_fragment_program, GL_NV_fragment_program2,
    GL_NV_fragment_program_option, GL_NV_framebuffer_multisample_coverage,
    GL_NV_geometry_shader4, GL_NV_gpu_program4, GL_NV_gpu_program4_1,
    GL_NV_gpu_program5, GL_NV_gpu_program5_mem_extended,
    GL_NV_gpu_program_fp64, GL_NV_gpu_shader5, GL_NV_half_float,
    GL_NV_internalformat_sample_query, GL_NV_light_max_exponent,
    GL_NV_multisample_coverage, GL_NV_multisample_filter_hint,
    GL_NV_occlusion_query, GL_NV_packed_depth_stencil,
    GL_NV_parameter_buffer_object, GL_NV_parameter_buffer_object2,
    GL_NV_path_rendering, GL_NV_pixel_data_range, GL_NV_point_sprite,
    GL_NV_primitive_restart, GL_NV_register_combiners,
    GL_NV_register_combiners2, GL_NV_shader_atomic_counters,
    GL_NV_shader_atomic_float, GL_NV_shader_buffer_load,
    GL_NV_shader_storage_buffer_object, GL_NV_shader_thread_group,
    GL_NV_texgen_reflection, GL_NV_texture_barrier,
    GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4,
    GL_NV_texture_multisample, GL_NV_texture_rectangle, GL_NV_texture_shader,
    GL_NV_texture_shader2, GL_NV_texture_shader3, GL_NV_transform_feedback,
    GL_NV_transform_feedback2, GL_NV_uniform_buffer_unified_memory,
    GL_NV_vdpau_interop, GL_NV_vertex_array_range, GL_NV_vertex_array_range2,
    GL_NV_vertex_attrib_integer_64bit, GL_NV_vertex_buffer_unified_memory,
    GL_NV_vertex_program, GL_NV_vertex_program1_1, GL_NV_vertex_program2,
    GL_NV_vertex_program2_option, GL_NV_vertex_program3, GL_S3_s3tc,
    GL_SGIS_generate_mipmap, GL_SGIS_texture_lod, GL_SGIX_depth_texture,
    GL_SGIX_shadow, GL_SUN_slice_accum
40 GLX Visuals
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
...
311 GLXFBConfigs:
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
...

2016年8月4日 星期四

Linux Ethernet Bonding 配置流程 - 前言 , 模式與Hash

前言

何謂 Bonding , 簡單而言就是將兩張以上的網路介面捆綁一起使用 .
根據 Linux Ethernet Bonding Driver HOWTO 上的說明, 有以下幾種模式 :

  1. Active-Backup 或稱備援模式 (mode 1), 在此模式下僅有一條連結可以可以使用 , 當其中一條介面異常時 , 會將流量切換至另外一條送出 .
  2. balance-rr 或稱輪替模式 (mode 0), 此模式下每條線路都會送出 , 不過此模式不被大部分的交換機支援 , 多用於非網管型交換機跟 Hub , 部份設備可以使用 EtherChannel .
  3. balance-xor 或稱傳統鏈路聚合模式 (mode 2) , 此模式下會透過 MAC 的 Hash (Source XOR Destination) , 在交換機部份被稱為 EtherChannel (Cisco) , Link AGgregation (Juniper and others) , 不會偵測兩邊是否正常收發 .
  4. Broadcast (mode 3) , 此時會將流量同時從多的介面廣播出去 .
  5. 802.3ad , LACP , Dynamic LAG (mode 4) , 動態鏈路聚合模式 , 此模式下會透過 LACPDU 封包偵測 , 使得兩邊交握完成後才會開始傳輸 , 再透過 Hash 將流量導入不同介面 . 用此功能時需注意 , 介面的速率與多工模式需相同 , 上限最多為 8 個介面 .
  6. balance-tlb (mode 5) , 將對外流量透過不同的 MAC 和介面送出 , 而進來的介面宣告為其中一固定介面 , 用於保障資料送出 .
  7. balance-alb (mode 6) , 透過 MAC 與 ARP 的複寫將進出流量導至不同介面.
Hash (xmit_hash_policy) 的方法有以下幾種 :
  1. Layer2 : Source MAC XOR Destination MAC XOR Packet type ID slave number
  2. Layer2+3 : 做完 Layer2 Hash 之後再 XOR Source IP XOR Destination IP
  3. Layer3+4 : Source Port OR Destination Port , 再 XOR Source IP XOR Destination IP
  4. Encap2+3 & Encap3+4 : 類似之前兩種但是提供給有額外封裝使用.
早期 2.6.3 僅支援 Layer2 Hash , 但要到 3.2.2 以後版本才能提供 layer2+3 .
LACP 則建議要到 3.4 以後版本再使用, 在之前有 RX Drop 的 Bug .