Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 00/37] Permit filesystem local caching | Date | Fri, 22 Feb 2008 16:47:27 +0000 |
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Chris Mason <chris.mason@oracle.com> 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
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