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| author | mav <mav@FreeBSD.org> | 2014-10-21 06:25:41 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2014-10-21 06:25:41 +0000 |
| commit | 32b4feead705b6f99ad2bbb1cc6c440962802fd1 (patch) | |
| tree | 076562c52a3b5e87aca89e4ecd695c102e405304 /share/man/man4/ada.4 | |
| parent | 3e285508e6ae42714b90e35e8896ea76ab9cf617 (diff) | |
| download | FreeBSD-src-32b4feead705b6f99ad2bbb1cc6c440962802fd1.zip FreeBSD-src-32b4feead705b6f99ad2bbb1cc6c440962802fd1.tar.gz | |
MFC r271926: Mention read_ahead tunables/sysctls.
Diffstat (limited to 'share/man/man4/ada.4')
| -rw-r--r-- | share/man/man4/ada.4 | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/share/man/man4/ada.4 b/share/man/man4/ada.4 index 760fa66..6b40880 100644 --- a/share/man/man4/ada.4 +++ b/share/man/man4/ada.4 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 21, 2014 +.Dd September 21, 2014 .Dt ADA 4 .Os .Sh NAME @@ -123,11 +123,13 @@ seconds. This variable determines whether to spin-down disks when shutting down. Set to 1 to enable spin-down, 0 to disable. The default is currently enabled. +.It Va kern.cam.ada.read_ahead +.It Va kern.cam.ada. Ns Ar X Ns Va .read_ahead .It Va kern.cam.ada.write_cache .It Va kern.cam.ada. Ns Ar X Ns Va .write_cache .Pp -These variables determine whether device write cache should be enabled -globally or per-device or disabled. +These variables determine whether device read-ahead and write caches +should be enabled globally or per-device or disabled. Set to 1 to enable write cache, 0 to disable, -1 to leave it as-is. Values modified at runtime take effect only after device reset .Pq using the reset subcommand of Xr camcontrol 8 . |
