On Mon, 2012-08-20 at 16:20 -0700, Andrew Morton wrote: > On Mon, 20 Aug 2012 11:30:59 +0200 > Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote: > > > On Mon, 2012-08-20 at 10:04 +0100, Mel Gorman wrote: > > > > > Can the following patch be tested please? It is reported to fix an fio > > > regression that may be similar to what you are experiencing but has not > > > been picked up yet. > > > > > > - > > > > This seems to help here. > > > > Boot your machine with "mem=768M" or a bit less depending on your setup, > > and try a netperf. > > > > -> before patch : > > > > # netperf > > MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to > > localhost.localdomain () port 0 AF_INET > > Recv Send Send > > Socket Socket Message Elapsed > > Size Size Size Time Throughput > > bytes bytes bytes secs. 10^6bits/sec > > > > 87380 16384 16384 14.00 6.05 > > > > -> after patch : > > > > Recv Send Send > > Socket Socket Message Elapsed > > Size Size Size Time Throughput > > bytes bytes bytes secs. 10^6bits/sec > > > > 87380 16384 16384 10.00 18509.73 > > "seem to help"? Was previous performance fully restored? I did some tests this morning on my HP Z600, and got same numbers than 3.5.0 Of course, its a bit difficult to say, because there is no CONFIG_PFMEMALLOC to test real impact. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
