Hello all,
I feel that my question is silly,
but have no explanation of this fact.
I run xm top and see that my CPU is utilized for 20%.
$ xm top
xentop - 11:02:34 Xen 3.0.3-1
1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0
shutdown
Mem: 2096380k total, 222848k used, 1873532k free CPUs: 2 @ 2133MHz
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS
NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR SSID
Domain-0 -----r 123 22.0 196608 9.4 no limit n/a 2 24 395
1081 0 0 0 0 0
After that I run top and see that the CPU load is ~3%
top - 11:06:12 up 12 min, 2 users, load average: 0.07, 0.03, 0.01
Tasks: 184 total, 1 running, 183 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.4%us, 1.4%sy, 0.0%ni, 97.7%id, 0.5%wa, 0.0%hi, 0.0%si, 0.1%st
Mem: 196756k total, 105660k used, 91096k free, 5136k buffers
Swap: 3903672k total, 0k used, 3903672k free, 36084k cached
I have run "top" and "xm top" simultaneously also.
The same.
I have only domain 0 running. No U-domains at all.
$ sudo xm list
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 192 2 r----- 184.0
How does xm top calculate cpu activity?
Is there any way to access low level information that xm top uses in
its calculations?
Question #2.
How can I gather information about system activity in the Xen domain 0?
In regular systems, not in Xen, I have used to use sar for this.
But under Xen sar can't show many interesting parameters,
e.g. interrupts activity.
Thank you!
--
WBR, i.m.chubin
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