On Tue, Aug 28, 2012 at 03:35:00PM +0200, Sasha Levin wrote: > On 08/28/2012 03:20 PM, Michael S. Tsirkin wrote: > > On Tue, Aug 28, 2012 at 03:04:03PM +0200, Sasha Levin wrote: > >> Currently if VIRTIO_RING_F_INDIRECT_DESC is enabled we will > >> use indirect descriptors and allocate them using a simple > >> kmalloc(). > >> > >> This patch adds a cache which will allow indirect buffers under > >> a configurable size to be allocated from that cache instead. > >> > >> Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx> > > > > I imagine this helps performance? Any numbers? > > I ran benchmarks on the original RFC, I've re-tested it now and got similar > numbers to the original ones (virtio-net using vhost-net, thresh=16): > > Before: > Recv Send Send > Socket Socket Message Elapsed > Size Size Size Time Throughput > bytes bytes bytes secs. 10^6bits/sec > > 87380 16384 16384 10.00 4512.12 > > After: > Recv Send Send > Socket Socket Message Elapsed > Size Size Size Time Throughput > bytes bytes bytes secs. 10^6bits/sec > > 87380 16384 16384 10.00 5399.18 > > > Thanks, > Sasha This is with both patches 1 + 2? Sorry could you please also test what happens if you apply - just patch 1 - just patch 2 Thanks! -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
