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Michael Opdenacker contributed a readahead applet.

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This commit is contained in:
Rob Landley
2006-08-20 22:12:18 +00:00
parent 289e86a0a5
commit 0e4690d4ef
5 changed files with 60 additions and 0 deletions
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16
miscutils/Config.in
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@@ -276,6 +276,22 @@ config CONFIG_MT
to advance or rewind a tape past a specified number of archive
files on the tape.
config CONFIG_READAHEAD
bool "readahead"
default n
help
Preload the files listed on the command line into RAM cache so that
subsequent reads on these files will not block on disk I/O.
This applet just calls the readahead(2) system call on each file.
It is mainly useful in system startup scripts to preload files
or executables before they are used. When used at the right time
(in particular when a CPU boundprocess is running) it can
significantly speed up system startup.
As readahead(2) blocks until each file has been read, it is best to
run this applet as a background job.
config CONFIG_RUNLEVEL
bool "runlevel"
default n