diff options
Diffstat (limited to 'qemu-img.texi')
| -rw-r--r-- | qemu-img.texi | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/qemu-img.texi b/qemu-img.texi index 9bffad226b..ccc0b519ba 100644 --- a/qemu-img.texi +++ b/qemu-img.texi @@ -131,14 +131,16 @@ Skip the creation of the target volume Command description: @table @option -@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-o @var{offset}] [--pattern=@var{pattern}] [-q] [-s @var{buffer_size}] [-t @var{cache}] [-w] @var{filename} +@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-o @var{offset}] [--pattern=@var{pattern}] [-q] [-s @var{buffer_size}] [-S @var{step_size}] [-t @var{cache}] [-w] @var{filename} Run a simple sequential I/O benchmark on the specified image. If @code{-w} is specified, a write test is performed, otherwise a read test is performed. A total number of @var{count} I/O requests is performed, each @var{buffer_size} bytes in size, and with @var{depth} requests in parallel. The first request -starts at the position given by @var{offset}. +starts at the position given by @var{offset}, each following request increases +the current position by @var{step_size}. If @var{step_size} is not given, +@var{buffer_size} is used for its value. If @code{-n} is specified, the native AIO backend is used if possible. On Linux, this option only works if @code{-t none} or @code{-t directsync} is |