.\" Generated by help2man 1.40.6.
.TH FS_MARK "1" "March 2012" "fs_mark: Benchmark synchronous/async file creation" "User Commands"
.SH NAME
fs_mark \- Benchmark synchronous/async file creation
.SH SYNOPSIS
.B fs_mark
[\fIOPTIONS\fR] \-d \fIDIRECTORY\fR [\-d \fIDIRECTORY\fR ...]
.SH DESCRIPTION
.B fs_mark
is meant to give some low level bashing to file systems. The write
pattern that it concentrates on is heavily synchronous IO across
multiple directories, drives, etc.
.SH OPTIONS
.TP
.BI \-h
Print usage and exit.
.TP
.BI \-k
Keep files after each iteration.
.TP
.BI \-F
Run until filesystem is full.
.TP
.BI \-S Syncmethod
Method to be used for synchronizing changes to disk:
.IP
0: No Sync
.IP
1: fsyncBeforeClose
.IP
2: sync/1_fsync
.IP
3: PostReverseFsync
.IP
4: syncPostReverseFsync
.IP
5: PostFsync
.IP
6: syncPostFsync
.TP
.BI \-D number
Use \fInumber\fR subdirectories.
.TP
.BI \-N number
Use \fInumber\fR files in each subdirectory in round robin mode.
.TP
.BI \-d directory
Use \fIdirectory\fR. Can be specified multiple times.
.TP
.BI \-l logfile
Log to \fIlogfile\fR.
.TP
.BI \-L number
Repeat the benchmark \fInumber\fR of iterations.
.TP
.BI \-n number
Use \fInumber\fR of files per iteration.
.TP
.BI \-p number
Use \fInumber\fR of total bytes file names.
.TP
.BI \-r number
Use \fInumber\fR of random bytes in file names.
.TP
.BI \-s byte_count
Use \fInumber\fR of bytes as size of each file.
.TP
.BI \-t number
Use \fInumber\fR of threads.
.TP
.BI \-w number
Use \fInumber\fR (of bytes per write() syscall.
.SH AUTHORS
.B fs_mark
was written by Ric Wheeler <ric@redhat.com>.
.PP
This manual page was written by Martin Steigerwald <ms@teamix.de>,
for the Debian project (but may be used by others).