[CFT] ZFS ACL and rrwlock speedup

[Philip M. Gollucci]

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http://people.freebsd.org/~mm/patches/zfs/zfs_metaslab.patch
http://people.freebsd.org/~mm/patches/zfs/zfs_abe_stat_rrwlock.patch

FreeBSD frieza.p6m7g8.net 9.0-CURRENT FreeBSD 9.0-CURRENT #1: Tue Aug 24
18:32:38 UTC 2010     root at frieza.p6m7g8.net:/usr/obj/usr/src/sys/FRIEZA
 amd64

This is my tinderbox, so it should see some big usage in the next few
days.  Its also an ssd.

$ zpool status
  pool: zroot
 state: ONLINE
 scrub: none requested
config:

        NAME         STATE     READ WRITE CKSUM
        zroot        ONLINE       0     0     0
          gpt/disk0  ONLINE       0     0     0

$ zpool upgrade
This system is currently running ZFS pool version 15.

All pools are formatted using this version.

Before patch: (not cached)
$ time find /usr/src >/dev/null
real    0m2.036s
user    0m0.137s
sys     0m0.878s

After patch: (not cached)
$ time find /usr/src >/dev/null
real    0m0.593s
user    0m0.073s
sys     0m0.520s





- -- 
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1024D/DB9B8C1C B90B FBC3 A3A1 C71A 8E70  3F8C 75B8 8FFB DB9B 8C1C
Philip M. Gollucci (pgollucci at p6m7g8.com) c: 703.336.9354
VP Apache Infrastructure; Member, Apache Software Foundation
Committer,                        FreeBSD Foundation
Consultant,                       P6M7G8 Inc.
Sr. System Admin,                 Ridecharge Inc.

Work like you don't need the money,
love like you'll never get hurt,
and dance like nobody's watching.
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