diff options
Diffstat (limited to 'pcu-fadvise.1.txt')
-rw-r--r-- | pcu-fadvise.1.txt | 101 |
1 files changed, 57 insertions, 44 deletions
diff --git a/pcu-fadvise.1.txt b/pcu-fadvise.1.txt index 9e10c8b..6a0cd1c 100644 --- a/pcu-fadvise.1.txt +++ b/pcu-fadvise.1.txt @@ -1,44 +1,57 @@ -NAME - pcu-fadvise - predeclare an access pattern on given files -SYNOPSIS - pcu-fadvise [-a advice] [-o offset] [-l length] FILE... -DESCRIPTION - A command-line interface to the posix_fadvise(2) syscall to tell - the kernel to optimize access patterns for specified files. -OPTIONS - -a advice - - File access pattern advice. - The advice must be one of the following: - - normal - sequential - random - noreuse - willneed - dontneed - - The default advice is normal. - - -o offset - - Apply advice only to the given byte offset. - This offset rounded down to the previous page offset. - The default offset is zero (beginning of the file) - - -l length - - Apply advice only to the given length in bytes. - This length is rounded up next page offset. - The default is to scan the entire file. - -OUTPUT - Errors only. -ENVIRONMENT - none -SEE ALSO - posix_fadvise(2) -BUGS - None known. Email the author if you find any. -AUTHOR - Eric Wong <normalperson@yhbt.net> +% PCU-FADVISE(1) Page Cache Utilities Manual +% Eric Wong <normalperson@yhbt.net> +% July 26, 2009 + +# NAME + +pcu-fadvise - predeclare an access pattern on given files + +# SYNOPSIS + +pcu-fadvise [*-a ADVICE*] [*-o OFFSET*] [*-l LENGTH*] FILE... + +# DESCRIPTION + +A command-line interface to the posix_fadvise(2) syscall to tell +the kernel to optimize access patterns for specified files. + +# OPTIONS + +-a *ADVICE* +: File access pattern advice. + +: *ADVICE* must be one of the following: + + * normal + * sequential + * random + * noreuse + * willneed + * dontneed + + The default advice is `normal`. + +-o *OFFSET* +: Apply advice only to the given byte offset. + This offset rounded down to the previous page offset. + The default offset is zero (beginning of the file). + +-l *LENGTH* +: Apply advice only to the given length in bytes. + This length is rounded up next page offset. + The default is to scan the entire file. + +# OUTPUT + +Errors only. + +# ENVIRONMENT + +none + +# SEE ALSO +[`posix_fadvise`(2)](http://linux.die.net/man/2/posix_fadvise) + +# BUGS + +None known. Email <pcu@librelist.com> if you find any. |