[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [BUNDLE] Xen Share w/ block device
> Here's the compulsory benchmark numbers (same machine, uniproc 3GHz > Pentium 4), ext2 filesystem in a file in dom0 served to dom1: > > Current block device: > dd if=/dev/zero of=test bs=1M count=1000: 71.5527 seconds By my accounting that looks to be about 14 MB/s off your block device using the existing split drivers... If you can't saturate the disk on a 3 Ghz box I'd have to think that something has gone desperately wrong. Has a block performance bug slid in to unstable or something? ;) I don't doubt that better memory performance can be achieved by adjusting event notification frequency/batching -- as you pointed out earlier... but block devices are a pretty weird place to try to win. I'd expect the numbers from the two tests you're running to be identical -- and bottlenecked on the disk. By a lot. a. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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