On Thu, 2011-12-29 at 14:52 -0800, Alan Cox wrote: > On 12/29/2011 16:28, Sean Bruno wrote: > > On Thu, 2011-12-29 at 12:22 -0800, Alan Cox wrote: > >> Please try this patch. It eliminates a race condition that might > >> actually account for some of the crashes in FreeBSD>= 9 on Xen. > >> > >> Alan > >> > > ref10-xen32.freebsd.org has this applied now. Looks ok to me? > > > > > I know that lmbench's bw_pipe program exercises the code path that I > changed if you want to give it a bit more testing. > > Alan >
Ok, I ran "a thing" ... I have a lot of poking around to do in lmbench now. Thanks for pointing me at this. Cursory run with patch "xen-pmap.c" [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe Pipe bandwidth: 892.52 MB/sec [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe -N 5 Pipe bandwidth: 982.46 MB/sec [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe -N 5 -P 2 Pipe bandwidth: 899.34 MB/sec Cursory run of vanilla-current: [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe Pipe bandwidth: 984.37 MB/sec [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe -N 5 Pipe bandwidth: 977.54 MB/sec [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ ./bw_pipe -N 5 -P 2 Pipe bandwidth: 887.26 MB/sec [sbruno@ref10-xen32 /usr/local/lib/lmbench/bin/i386-freebsd10.0]$ uname -a FreeBSD ref10-xen32.freebsd.org 10.0-CURRENT FreeBSD 10.0-CURRENT #1 r228971: Fri Dec 30 18:27:01 UTC 2011 sbr...@ref10-xen32.freebsd.org:/var/tmp/dumpster/scratch/sbruno-scratch/head/sys/XEN i386 _______________________________________________ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
