[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] poor domU VBD performance.
> tried xen-2.0.5 and xen-unstable with a sequential read test > using 256k > request size and 8 reader threads with o_direct on a > lvm-raid-0 scsci array > (no HW cache) and got: > > xen-2-dom0-2.6.10: 177 MB/sec > xen-2-domU-2.6.10: 185 MB/sec > xen-3-dom0-2.6.11: 177 MB/sec > xen-3-domU-2.6.11: 185 MB/sec Please can you try a simple 'dd if=/dev/sdaXX of=/dev/null bs=1024k count=4096' to read 4GB from the partition both in dom0 and domU. When booting, I get the following output, which I presume is the default? elevator: using anticipatory as default io scheduler Thanks, Ian _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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