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Diffstat (limited to 'miscutils/readahead.c')
| -rw-r--r-- | miscutils/readahead.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/miscutils/readahead.c b/miscutils/readahead.c index e22aaa468..0b502f88c 100644 --- a/miscutils/readahead.c +++ b/miscutils/readahead.c @@ -9,6 +9,23 @@ * * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ +//config:config READAHEAD +//config: bool "readahead" +//config: default y +//config: depends on LFS +//config: select PLATFORM_LINUX +//config: help +//config: Preload the files listed on the command line into RAM cache so that +//config: subsequent reads on these files will not block on disk I/O. +//config: +//config: This applet just calls the readahead(2) system call on each file. +//config: It is mainly useful in system startup scripts to preload files +//config: or executables before they are used. When used at the right time +//config: (in particular when a CPU bound process is running) it can +//config: significantly speed up system startup. +//config: +//config: As readahead(2) blocks until each file has been read, it is best to +//config: run this applet as a background job. //usage:#define readahead_trivial_usage //usage: "[FILE]..." |