Chris Mason <chris.mason@xxxxxxxxxx> wrote: > Thanks for trying this, of course I'll ask you to try again with the latest > v0.13 code, it has a number of optimizations especially for CPU usage. Here you go. The numbers are very similar. David ================================= FEW BIG FILES TEST ON BTRFS v0.13 ================================= Completely cold caches: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m2.202s user 0m0.000s sys 0m1.716s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m4.212s user 0m0.000s sys 0m0.896s Warm BTRFS pagecache, cold NFS pagecache: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m0.197s user 0m0.000s sys 0m0.192s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m0.376s user 0m0.000s sys 0m0.372s Warm on-disk cache, cold pagecaches: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m1.543s user 0m0.004s sys 0m1.448s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m3.111s user 0m0.000s sys 0m2.856s ================================================== MANY SMALL/MEDIUM FILE READING TEST ON BTRFS v0.13 ================================================== Completely cold caches: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 0m31.575s user 0m0.176s sys 0m6.316s Warm BTRFS pagecache, cold NFS pagecache: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 0m16.081s user 0m0.164s sys 0m5.528s Warm on-disk cache, cold pagecaches: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 2m15.245s user 0m0.064s sys 0m2.808s - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
