Date: Sat, 27 Jun 2009 21:37:36 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern vfs_cluster.c Message-ID: <200906272137.n5RLbqjJ096672@repoman.freebsd.org>
index | next in thread | raw e-mail
alc 2009-06-27 21:37:36 UTC
FreeBSD src repository
Modified files:
sys/kern vfs_cluster.c
Log:
SVN rev 195122 on 2009-06-27 21:37:36Z by alc
Correct a long-standing performance bug in cluster_rbuild(). Specifically,
in the case of a file system with a block size that is less than the page
size, cluster_rbuild() looks at too many of the page's valid bits.
Consequently, it may terminate prematurely, resulting in poor performance.
Reported by: bde
Reviewed by: tegge
Approved by: re (kib)
Revision Changes Path
1.179 +15 -4 src/sys/kern/vfs_cluster.c
help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200906272137.n5RLbqjJ096672>