Messages in this thread | | | Date | Mon, 2 Jan 2012 11:23:39 -0500 | From | Christoph Hellwig <> | Subject | Re: [PATCH 0/6][RFC] virtio-blk: Change I/O path from request to BIO |
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On Mon, Jan 02, 2012 at 05:18:13PM +0100, Paolo Bonzini wrote: > >I tried a few times, and the only constant measureable > >thing was that it regressed performance when used for rotating devices > >in a few benchmarks. > > Were you trying with cache=none or writeback? For cache=none, > that's exactly what I'd expect. cache=writeback could be more > interesting...
cache=none - cache=writeback isn't something people should ever use except for read-only or extremly read-mostly workloads.
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