Hi,

On 09/07/2010 06:45 PM, Matt Weinstein wrote:
> I've just put enough instrumentation in to get some numbers.

> My device thread is running at SCHED_RR pri=66, I have approximately  
> 256 client threads, the time from last packet send() on REQ to last  
> device recv() on XREP is averaging around 40ms with a stddev of about  
> 36-40 (10,000 samples)
> 
> There's limited or no variation reordering poll upcalls (reactors)
> 
> The other direction (device XREP  >> user REQ) is almost always nil.
> 
> I haven't declared any HWMs so presumably they are infinite.
> 
> 
> Linux dev2201.corp.xplusone.com 2.6.18-194.8.1.el5xen #1 SMP Thu Jul 1  
> 19:41:05 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

How many CPU's on the guest and how many on the host?  Are you
overcommiting CPU's?  Overcommiting RAM?

What does vmstat 1 10 look like on the guest when it's behaving this way?
How does it look like on the host?

regards,
Solvi

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