关于GPU Passthrough与XS 6.5和XD 7.6的性能问题

我认为这是预料之中的。
Grid K1是低级（和高价）卡（4x入门级Kepler GK107非常像“GT 630”/“Quadro K600”/“Quadro K1000M”）。
添加虚拟化（如果使用vGPU而不是直通，则使用带帧速率限制器的分时单元），编码，电源管理和其他处罚。
GTX 850M拥有更多（Maxwell（更新的架构）GM107  -  3倍以上的单位，用于核心的时钟。
http://www.techpowerup.com/gpudb/1699/grid-k1.html
http://www.techpowerup.com/gpudb/2538/geforce-gtx-850m.html
http://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units
http://www.videocardbenchmark.net/compare.php?cmp[]=2617&cmp[]=2859



以下为原文

I think that is expected.
Grid K1 is low-level (and high priced) card (4x entry level Kepler GK107 very like "GT 630"/"Quadro K600"/"Quadro K1000M"). Add also virtualization (time-shared units with frame rate limiter if you use vGPU instead passthrough), encoding, power management and other penalties.
GTX 850M has more (Maxwell (newer architecture) GM107 - 3x more units, fasters clock for core).

http://www.techpowerup.com/gpudb/1699/grid-k1.html
http://www.techpowerup.com/gpudb/2538/geforce-gtx-850m.html
http://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units
http://www.videocardbenchmark.net/compare.php?cmp[]=2617&cmp[]=2859

嗨，mcerveny
非常感谢您的回复，它对我帮助很大！



以下为原文

Hi, mcerveny

Thanks very much for reply, it help me a lot!

你好
相比之下，您的笔记本电脑有哪些规格？
（CPU，RAM，磁盘，屏幕分辨率）和你得到的FPS是什么？
（高/低（它在基准测试结束时说））
您是否更新了Hypervisor主机上的固件？
你有没有调整BIOS以获得最佳性能？
您是否调整了XenServer的性能？
XenServer主机上是否还有其他VM正在运行？
您是如何连接到VM以运行基准测试的？
你的网络速度是多少（到桌面+后端）？
您是通过LAN还是WAN连接？
你得到什么FPS（高/低）？
你用什么存储？
VM运行的屏幕分辨率是多少？
是否应用了任何Citrix策略？
K1能够运行该基准测试，但是存在局限性以及可以使其更好地运行的事情。
这不仅仅是将GPU投入服务器，将其分配给虚拟机并远离您的情况。
需要考虑更多变量才能充分利用它。
为了让我们能够提供帮助，您必须向我们提供比您更多的信息，因此以上所有问题;-)
问候
本



以下为原文

Hi

What are the spec's of your laptop in comparison? (CPU, RAM, disk, screen resolution) and what FPS are you getting? (Hi / Low (it says at the end of the benchmark))

Have you updated the Firmware on the Hypervisor host?
Have you tuned the BIOS for Maximum Performance?
Have you tuned XenServer for performance?
Are there any other VMs running on the XenServer host?
How are you connecting to your VM to run the benchmark?
What's your network speed (to desk + backend)?
Are you connecting over a LAN or WAN?
What FPS are you getting (Hi / Low)?
What are you using for storage?
What screen resolution is the VM running?
Any Citrix policies applied?

The K1 is capable of running that benchmark, but there are limitations and also things you can do to make it perform better. It's not just a case of throwing a GPU in a server, assigning it to a VM and away you go. There are more variables to consider to get the best out of it. In order for us to help, you'll have to give us a little more information than you have, hence all the questions above ;-)

Regards

Ben

嗨，Benji
谢谢你的回复！
笔记本电脑的规格：
CPU：Intel Core I7-4710MQ
内存：8GB
磁盘：WDC WD10SPCX 7.2K SATA磁盘
操作系统：Windows 7旗舰版
屏幕分辨率：1920 * 1080全屏模式（与VM相同）
1.您是否更新了Hypervisor主机上的固件？ 
不，BIOS会成为一个问题吗？
BIOS信息 
供应商：American Megatrends Inc. 
版本：3.0b 
发布日期：01/02/2014 
地址：0xF0000 
运行时大小：64 kB 
ROM大小：12288 kB 
特点： 
支持PCI 
BIOS可升级 
允许BIOS阴影 
支持从CD启动 
支持可选引导 
BIOS ROM已插入 
支持EDD 
支持打印屏幕服务（int 5h） 
支持8042键盘服务（​​int 9h） 
支持串行服务（int 14h） 
支持打印机服务（int 17h） 
支持ACPI 
支持USB传统 
支持BIOS启动规范 
支持功能密钥启动的网络启动 
支持有针对性的内容分发 
UEFI受支持 
BIOS修订版：3.11
2.您是否已调整BIOS以获得最佳性能？ 
是!
我也禁用了超线程（无论是否禁用，都没有运气）
3.您是否已调整XenServer以获得性能？ 
是的，我也打开了Turbo模式
4. XenServer主机上是否还有其他VM正在运行？ 
不，只有1个VM在XenServer上运行
5.您如何连接到VM以运行基准测试？ 
笔记本电脑上的Citrix Receiver，VM端的XenDesktop 7.6 VDA + HDX 3D Pro
6.你的网络速度是多少（到桌面+后端）？ 
1GB以太网
7.您是通过LAN还是WAN连接？ 
LAN
8.你得到什么FPS（高/低）？ 
在笔记本电脑上，我得到34.1 FPS，在VM上有9.1 FPS（我禁用了FRL）！
9.你用什么存储？ 
英特尔SSDSC2BB12，我还在基准运行时检查Dom0上的IO负载
Linux 3.10.0 + 2（localhost）04/10/2015 
avg-cpu：％user％nice％system％iowait％steal％idle 
0.26 0.00 0.44 0.01 0.11 99.17 
设备：tps Blk_read / s Blk_wrtn / s Blk_read Blk_wrtn 
sda 39.78 1313.05 836.88 5352310 3411323
10. VM运行的屏幕分辨率是多少？ 
1920 * 1080，全屏模式
11.是否应用了Citrix策略？ 
是的，我用google搜索建议，没有改变任何政策，但都没有运气
桌面组合重定向：已禁用
HDX3DPro质量设置：6553680（我更改了最小值和最大值，但没有生效）
有损压缩等级：无
有损压缩阈值：10240 Kbps
最低图像质量：非常高
移动图像压缩：已禁用
排队和折腾：已禁用
目标帧率：60fps
目标最低帧速率：20 fps
视觉质量：高



以下为原文

Hi, Benji

Thanks for you reply!


The spec's of laptop:

CPU: Intel Core I7-4710MQ
RAM: 8GB
disk: WDC WD10SPCX 7.2K SATA disk
OS: Windows 7 Ultimate
screen resolution: 1920 * 1080 with full screen mode (the same as the VM)


1. Have you updated the Firmware on the Hypervisor host?
   No, would the BIOS be a issue?

BIOS Information
        Vendor: American Megatrends Inc.
        Version: 3.0b
        Release Date: 01/02/2014
        Address: 0xF0000
        Runtime Size: 64 kB
        ROM Size: 12288 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                ACPI is supported
                USB legacy is supported
                BIOS boot specification is supported
                Function key-initiated network boot is supported
                Targeted content distribution is supported
                UEFI is supported
        BIOS Revision: 3.11


2. Have you tuned the BIOS for Maximum Performance?
   Yes! I disabled the Hyper Threading too (whether disable or not, all with no luck)

3. Have you tuned XenServer for performance?
   Yes, I also tuned the Turbo Mode on

4. Are there any other VMs running on the XenServer host?
   No, only 1 VM running on the XenServer

5. How are you connecting to your VM to run the benchmark?
   Citrix Receiver on the laptop, XenDesktop 7.6 VDA + HDX 3D Pro on the VM side

6. What's your network speed (to desk + backend)?
   1GB Ethernet

7. Are you connecting over a LAN or WAN?
   LAN

8. What FPS are you getting (Hi / Low)?
   On the laptop, I get 34.1 FPS, and on the VM there is 9.1 FPS (I disabled the FRL)!

9. What are you using for storage?
   Intel SSDSC2BB12, I also check the IO load on the Dom0 when benchmark running


Linux 3.10.0+2 (localhost)      04/10/2015

    avg-cpu:  %user   %nice %system %iowait  %steal   %idle
               0.26    0.00    0.44    0.01    0.11   99.17

    Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
    sda              39.78      1313.05       836.88    5352310    3411323


10. What screen resolution is the VM running?
   1920 * 1080, with full screen mode

11. Any Citrix policies applied?
   Yes, I googled for advices, changed none policy to the following but all with no luck


Desktop Composition Redirection:  Disabled
HDX3DPro quality settings: 6553680 ( I changed the min and max value, but doesn't take effect)
Lossy compression level: None
Lossy compression threshold value: 10240 Kbps
Minimum image quality: Very High
Moving image compression: Disabled
Queuing and tossing: Disabled
Target frame rate: 60fps
Target minimum frame rate: 20 fps
Visual quality: High