X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fio.1;h=305c18493843bcb5b5d136851232fd4931407d16;hb=045396879167669c3809474422bc20866c81f6d0;hp=dfca43efd9ca0707c563a5395aa31e8bde39399f;hpb=e0b0d89201bd301f47fbbfcf86545b7e77b16ef3;p=fio.git

diff --git a/fio.1 b/fio.1
index dfca43ef..305c1849 100644
--- a/fio.1
+++ b/fio.1
@@ -182,6 +182,11 @@ reasons. Allow values are 1024 or 1000, with 1024 being the default.
 Seed the random number generator in a predictable way so results are repeatable
 across runs.  Default: true.
 .TP
+.BI fallocate \fR=\fPbool
+By default, fio will use fallocate() to advise the system of the size of the
+file we are going to write. This can be turned off with fallocate=0. May not
+be available on all supported platforms.
+.TP
 .BI fadvise_hint \fR=\fPbool
 Disable use of \fIposix_fadvise\fR\|(2) to advise the kernel what I/O patterns
 are likely to be issued. Default: true.
@@ -206,14 +211,14 @@ same size.
 .TP
 .BI blocksize \fR=\fPint[,int] "\fR,\fB bs" \fR=\fPint[,int]
 Block size for I/O units.  Default: 4k.  Values for reads and writes can be
-specified seperately in the format \fIread\fR,\fIwrite\fR, either of
+specified separately in the format \fIread\fR,\fIwrite\fR, either of
 which may be empty to leave that value at its default.
 .TP
 .BI blocksize_range \fR=\fPirange[,irange] "\fR,\fB bsrange" \fR=\fPirange[,irange]
 Specify a range of I/O block sizes.  The issued I/O unit will always be a
 multiple of the minimum size, unless \fBblocksize_unaligned\fR is set.  Applies
 to both reads and writes if only one range is given, but can be specified
-seperately with a comma seperating the values. Example: bsrange=1k-4k,2k-8k.
+separately with a comma seperating the values. Example: bsrange=1k-4k,2k-8k.
 Also (see \fBblocksize\fR).
 .TP
 .BI bssplit \fR=\fPstr
@@ -375,6 +380,27 @@ How many I/Os to perform before issuing an \fBfsync\fR\|(2) of dirty data.  If
 Like \fBfsync\fR, but uses \fBfdatasync\fR\|(2) instead to only sync the
 data parts of the file. Default: 0.
 .TP
+.BI sync_file_range \fR=\fPstr:int
+Use sync_file_range() for every \fRval\fP number of write operations. Fio will
+track range of writes that have happened since the last sync_file_range() call.
+\fRstr\fP can currently be one or more of:
+.RS
+.TP
+.B wait_before
+SYNC_FILE_RANGE_WAIT_BEFORE
+.TP
+.B write
+SYNC_FILE_RANGE_WRITE
+.TP
+.B wait_after
+SYNC_FILE_RANGE_WRITE
+.TP
+.RE
+.P
+So if you do sync_file_range=wait_before,write:8, fio would use
+\fBSYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE\fP for every 8 writes.
+Also see the sync_file_range(2) man page.  This option is Linux specific.
+.TP
 .BI overwrite \fR=\fPbool
 If writing, setup the file first and do overwrites.  Default: false.
 .TP
@@ -736,6 +762,12 @@ your system doesn't have it mounted, you can do so with:
 Set the weight of the cgroup to this value. See the documentation that comes
 with the kernel, allowed values are in the range of 100..1000.
 .TP
+.BI cgroup_nodelete \fR=\fPbool
+Normally fio will delete the cgroups it has created after the job completion.
+To override this behavior and to leave cgroups around after the job completion,
+set cgroup_nodelete=1. This can be useful if one wants to inspect various
+cgroup files after job completion. Default: false
+.TP
 .BI uid \fR=\fPint
 Instead of running as the invoking user, set the user ID to this value before
 the thread/process does any work.