10K containers

10K containers

[jamal]

Olla,

Has anybody benchmarked in the range of 10K containers for virtual
routing or even virtual servers with traffic? If you have, could you
share your experience on memory, cpu and throughput?

I have been pointed to:
https://lists.linux-foundation.org/pipermail/containers/2009-January/015315.html

which focuses on creation phase.
Dan, was "slow" measured by how long it took to create? What was the
kernel? I am running  2.6.31-rc7 - do the sysfs issues still exist?

I have also been pointed to:
http://lxc.sourceforge.net/network/benchs.php
Demonstrates throughput - seems to stay constant with the case of etun
hitting  2+ times the CPU use!
I am taking it that etun is pretty close to veth performance-wise, so
the results there may still be valid today.

Daniel - maybe you run these tests; is there a profile that points out
where the bottleneck is?

cheers,
jamal

Re: 10K containers

[Dan Smith]

JH> Dan, was "slow" measured by how long it took to create?

Yes.

JH> What was the kernel? I am running 2.6.31-rc7 -

I don't recall what kernel version I was using.  

JH> do the sysfs issues still exist?

There was, at one point, a userspace script as part of hal or udev
that was consuming a large amount of CPU while handling all the new
devices being created.  I don't remember if the numbers I posted here
were before or after that was fixed, so perhaps it's worth another
test.

-- 
Dan Smith
IBM Linux Technology Center
email: danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org