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xen-devel
> Is it like this even when you haven't got a domain in a bad
> state?
I think so, although I've never actually timed it before.
> Of the 1.4s of CPU, consumed, 1.2s seems to being accounted to
> 'xm', so we can assume that 'xend' is consuming the other
> 0.2. What's odd about this is that _xend_ is the guy that's
> actually doing most of the work -- xm just does an RPC to it.
>
> Anyhow, it might be more informative to figure out where the
> difference between real time and CPU time is coming
> from. Presumably xm/xend is blocking on IO. I wander if running
> an strace on xm and/or xend might be informative.
>
> BTW: how are you accessing your root file system (local disk,
> NFS) etc?
Root filesystem in dom0 is a local raid array, albeit a very slow one.
The disk appears to do a fair bit of chugging when I run it, although
I'm not normally near the box.
After a checkout and rebuild just now, it appears to be much faster!
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 81.8
gaia2 1 126 0 -b--- 22.0 9601
real 0m2.254s
user 0m1.100s
sys 0m0.090s
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 83.9
gaia2 1 126 0 -b--- 22.1 9601
real 0m2.544s
user 0m1.110s
sys 0m0.100s
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 86.5
gaia2 1 126 0 -b--- 22.2 9601
real 0m2.465s
user 0m1.060s
sys 0m0.140s
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 88.6
gaia2 1 126 0 -b--- 22.3 9601
real 0m2.529s
user 0m1.060s
sys 0m0.150s
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 91.1
gaia2 1 126 0 -b--- 22.4 9601
real 0m2.371s
user 0m1.080s
sys 0m0.130s
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 123 0 r---- 93.3
gaia2 1 126 0 -b--- 22.5 9601
real 0m2.326s
user 0m1.130s
sys 0m0.130s
2 seconds is still a bit slow considering what it is actually doing, but
better than 10.
James
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