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xen-users
Re: [Xen-users] Re: Performance Issues: I/O Wait
Nick Couchman schrieb:
> Hi, again...haven't had any responses to this, yet.
>
> Thanks,
> Nick
Hi,
have you tried to pin your vCPU's to dedicated Cores?
It might be suboptimal if a domU uses.. say core 0 of
cpu 0 and core 0 of cpu 1 ... or anything not on the
same cpu.
config:
e.g. use the second cpu on a 2x dualcore system
count starts at 0.
cpus = [ 2,3 ]
If your domU is bridged, you might try to disable
transmission checksums on the NIC's.
ethtool -K [nicname] tx off
Anyway, you mentioned high I/O latency due to network
issues. Is your domU using some kind of NFS or something?
Btw. I might missed this part, but are you using PV or
HVM guests?
Greetings
--
Stephan Seitz
Senior System Administrator
*netz-haut* e.K.
multimediale kommunikation
zweierweg 22
97074 würzburg
fon: +49 931 2876247
fax: +49 931 2876248
web: www.netz-haut.de <http://www.netz-haut.de/>
registriergericht: amtsgericht würzburg, hra 5054
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