[Xen-users] [Fwd: XCP - extreme high load on pool master]

[George Shuklin <george.shuklin@xxxxxxxxx>]

Good day. 

We trying to test XCP cloud under some product-like load (4 hosts, each with 
24Gb mem and 8 cores)

But with just about 30-40 virtual machines I got an extreme load on dom0
on pool master host: LA is about 3.5-6, and most time are used by xapi
and stunnel processes.

It's really bother me: what happens on higher load with few thousands of
VMs with about 10-16 hosts in pool...

top data:

Tasks:  95 total,   3 running,  91 sleeping,   0 stopped,   1 zombie
Cpu(s):19.4%us,42.1%sy,0.0%ni,35.8%id,  1.3%wa,  0.0%hi,  1.0%si, 0.3%st
Mem:    746496k total,   731256k used,    15240k free,    31372k buffers
Swap:   524280k total,      128k used,   524152k free,   498872k cached

PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+ COMMAND
17  -3  315m  14m 5844 S 52.3  2.0   5370:41 xapi
17  -3 22524  15m 1192 S  8.3  2.2 875:16.18 stunnel
15  -5     0    0    0 S  0.7  0.0  54:28.78 netback
10 -10  6384 1868  892 S  0.3  0.3  22:03.14 ovs-vswitchd

dom0 on non-master hosts are loaded about 25-30% each.



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