From: Jens Axboe Date: Fri, 18 Jan 2008 09:30:07 +0000 (+0100) Subject: Update iodepth_batch documentation X-Git-Tag: fio-1.17.3~5 X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=89e820f6833fd6ea36625aa9393f1559f2d881dd Update iodepth_batch documentation Signed-off-by: Jens Axboe --- diff --git a/HOWTO b/HOWTO index ca095a32..a20f7141 100644 --- a/HOWTO +++ b/HOWTO @@ -402,8 +402,9 @@ iodepth=int This defines how many io units to keep in flight against concurrency. iodepth_batch=int This defines how many pieces of IO to submit at once. - It defaults to the same as iodepth, but can be set lower - if one so desires. + It defaults to 1 which means that we submit each IO + as soon as it is available, but can be raised to submit + bigger batches of IO at the time. iodepth_low=int The low water mark indicating when to start filling the queue again. Defaults to the same as iodepth, meaning