Re: Bug: xm commands hanging due to poor threading in xend

[Matt Ayres <matta@tektonic.net>]

Matt Ayres wrote:
> 
> 
> Matt Ayres wrote:
> 
>>
>> File limit is 14343 so fd's shouldn't be a problem.
> 
> Actually, my thread-max limit was 4400, so in theory this could have 
> been hit by many httpd/mysql/xend accesses.
> 

I raised the thread-max to 16384, increased dom0 RAM to 512MB, and dom0 
swap to 1GB and still saw problems throughout the night.  I noticed 
Vincent committed a few memory leak / xenstore fixes today.  I 
immediately pulled that down and am seeing how well things run now.

Users also reported receiving BUG's in their domains, I submitted a bug 
  regarding this.  I have set vcpus=1 for every domU now just in case 
SMP  inside the domU was affecting Xen / dom0 Linux.

I will update if this solves my problems or if they change / persist.

Thank you to the Xen developers for assisting me with diagnosing these 
odd problems that only those of us brave enough to try -unstable in 
production can probably find :)

Cheers!
Matt Ayres