[FreeNX-kNX] taskset and multi-core

[Alastair Johnson]

Mario Becroft wrote:
> Ralf Anderson <ralf.anderson at gmail.com> writes:
> 
>> Has anyone successfully run freenx on multiple cores using taskset?
>>
>> When running 3D graphics applications, nxagent sometimes consumes 100% of a cpu
>> on the server. So I'd like to get nxagent running on several cores.  
>>
>> I tried setting USE_PROCESSOR_TASKSET and COMMAND_TASKSET in node.conf, but it
>> didn't make any difference.  (I did verify that taskset is installed on the
>> server).
>>
>> One thing I'm not clear on is whether taskset can distribute a single task
>> (such as nxagent) over several cores, or whether it simply assigns one task per
>> core?
> 
> You can't run one nxagent on multiple cores, as it is
> single-threaded. You can of course have one user's nxagent on one core
> and another user's nxagent on another core (this will be done
> automatically by the OS scheduler).
> 
> If you have a single user who needs more performance, your only option
> is to beef up the CPU--or find a less brute-force approach to solving
> the problem.
> 
> For example, what sort of 3D application is it? Is it using GL? If it,
> you could benefit greatly from using 3D graphics hardware. You might
> like to look at chromium.
> 

You might also like to look at VMGL, formerly Xen-GL.

http://www.cs.toronto.edu/~andreslc/xen-gl/