Picking up this issue once again.

I observe strong different performance between two comparable systems (in 
different facilities), which seems not plausible to me:

Visualization Enviroment 1:

VGL Server:
Hardware:
  CPU: 2*Intel Xeon E5-2687W v4, 12x3.0Ghz (3.5 Ghz max)
  MB : Supermicro Motherboard X10DAi
  RAM: 256GB DDR4 ECC 2400Hz (CT32G4RFD424A)
  GPU: Nvidia Quadro M6000 12GB
  SSD: 2TB Samsung PM863
  HDD: 24TB RAID 6 (5xHUH728080ALE600)
  LAN: 10Gbit Supermicro AOC-STG-I2T

Software:
Ubuntu 12.04 LTS
VirtualGL 2.6.1

VGLClient (Desktop PC):
CPU: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
LAN: 1Gbit
Software: Ubuntu 16.04LTS

vglrun +pr /opt/VirtualGL/bin/glxspheres64

Readback    - 1279.52 Mpixels/sec-  936.68 fps
625.544299 frames/sec - 854.508525 Mpixels/sec
Compress 0  -   91.66 Mpixels/sec-   67.10 fps
Total       -  112.60 Mpixels/sec-   82.43 fps-  140.59 Mbits/sec (19.2:1)
Readback    - 1276.81 Mpixels/sec-  934.69 fps
620.622386 frames/sec - 847.785074 Mpixels/sec
Compress 0  -   84.02 Mpixels/sec-   61.51 fps
Total       -  107.23 Mpixels/sec-   78.50 fps-  134.42 Mbits/sec (19.1:1)

CPU Loading:
Server: 170% average
Client: 270% average


Visualization Enviroment 2:

VGL Server:
Hardware:
  CPU: 2*Intel(R) Xeon(R) Gold 6148 CPU @ 2.40GHz (3.7 Ghz max)
  RAM: 256GB DDR4 ECC 2666MHz 
  GPU: Nvidia Quadro P5000 16GB [GP104GL]
  LAN: 1Gbit 

Software:
Ubuntu 18.04 LTS
VirtualGL 2.6.1

VGLClient (laptop):
 CPU: Intel(R) Core(TM) i7-6600 CPU @ 2.60GHz
 LAN: 1Gbit 
 Software: Windows 10 with Linux Ubuntu 18.04 WSL, VcXsrv X-Server

vglrun +pr /opt/VirtualGL/bin/glxspheres64

Readback    -  336.98 Mpixels/sec-  301.95 fps
44.329628 frames/sec - 49.471864 Mpixels/sec
Compress 0  -  122.81 Mpixels/sec-  110.04 fps
Total       -   32.88 Mpixels/sec-   29.46 fps-   55.18 Mbits/sec (14.3:1)
Readback    -  333.44 Mpixels/sec-  298.78 fps
44.390165 frames/sec - 49.539424 Mpixels/sec
Compress 0  -  122.34 Mpixels/sec-  109.62 fps
Total       -   27.66 Mpixels/sec-   24.78 fps-   47.42 Mbits/sec (14.0:1)

CPU Loading:
Server: 388% average
Client: 77% average

I don't understand why the CPU loading of the VGL server in environment 2 
is so high compared to environment 1 and a significant lower framerate of 
25fps compared to 80fps is achieved.
There is no firewall active in the environments which may cause an overhead.
Do you have any hints where to look at?

Looking forward to your reply.

On Thursday, February 21, 2019 at 12:45:28 PM UTC+1, ulsch wrote:
>
> Think simple instead of complicated :-)
>
> Thank you very much, the port was blocked!
>
> On Wednesday, February 20, 2019 at 7:13:16 PM UTC+1, DRC wrote:
>>
>> -c proxy is designed for use with an X proxy (such as TurboVNC, the X 
>> proxy we produce), so it's not surprising that it performs poorly over a 
>> remote connection.  X proxies act as virtual X servers, so they are 
>> designed to be run on the same machine as VirtualGL.  As such, -c proxy 
>> sends the rendered frames from VirtualGL to the X server using 
>> XShmPutImage(), so the frames are not compressed in any way. 
>>
>> Check the vglconnect log (in {home directory}/.vgl/ on the client 
>> machine) and see whether vglclient actually received a connection from 
>> the server.  If it didn't, then I would suspect that you need to open 
>> port 4242 in the client's firewall.  This is one of many reasons why X 
>> proxies are the most popular way of running VirtualGL these days, but I 
>> acknowledge that the VGL Transport still has its uses and is the most 
>> straightforward way of running VirtualGL if you are already using a 
>> remote X environment with a client-side X server. 
>>
>> DRC 
>>
>>
>>

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