Messages in this thread | | | Date | Sun, 09 Nov 2008 20:32:08 +0200 | From | "Vitaly V. Bursov" <> | Subject | Re: Slow file transfer speeds with CFQ IO scheduler in some cases |
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Alexey Dobriyan wrote: > On Sun, Nov 09, 2008 at 08:04:45PM +0200, Vitaly V. Bursov wrote: >> I'm building small server system with openvz kernel and have ran into >> some IO performance problems. Reading a single file via NFS delivers >> around 9 MB/s over gigabit network, but while reading, say, 2 different >> or same file 2 times at the same time I get >60MB/s. > > openvz kernels have very changed CFQ and, IIRC, this one-reader problem is > fixed somewhere. Ask devel@openvz.org.
That's why I've checked vanilla kernel also. It performs somewhat better, but definitely shares same issues...
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