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MFC r223622:
authormm <mm@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Fri, 8 Jul 2011 09:20:32 +0000 (09:20 +0000)
committermm <mm@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Fri, 8 Jul 2011 09:20:32 +0000 (09:20 +0000)
commite966d34277b50a9b049adff2ef97dcfd2fc44fd0
tree4fe1a1cfd9834e8059d04f3ff080a2e626dd732dtree | snapshot
parent5b5acadeae4d8ea3c66159fbdc32774171ae4c4ccommit | diff
MFC r223622:
Disable vdev cache (readahead) by default.

The vdev cache is very underutilized (hit ratio 30%-70%) and may consume
excessive memory on systems with many vdevs.

Illumos-gate revision: 13346
Obtained from: Illumos (Bug #175)

git-svn-id: svn://svn.freebsd.org/base/stable/8@223861 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_cache.c diff | blob | history
8-STABLE