path: root/README
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authorJens Axboe <>2013-12-09 12:38:53 -0700
committerJens Axboe <>2013-12-09 12:38:53 -0700
commit3e260a46ea9a8de224c3d0a29a608da3440f284a (patch)
treebf9084a3b95aec5b3f22ca5ff4de3a5599f8b397 /README
parent572cfb3f4d2cbf22291b395f2bb41facdc17ce86 (diff)
Add options to have fio latency profile a device
This adds three new options: - latency_target. This defines a specific latency target, in usec. - latency_window. This defines the period over which fio samples. - latency_percentile. This defines the percentage of IOs that must meet the criteria specified by latency_target/latency_window. With these options set, fio will run the described workload and vary the queue depth between 1 and iodepth= to find the best performing spot that meets the criteria specified by the three options. A sample job file is also added to demonstrate how to use this. Signed-off-by: Jens Axboe <>
Diffstat (limited to 'README')
1 files changed, 2 insertions, 0 deletions
diff --git a/README b/README
index 1373c789..0acb04fb 100644
--- a/README
+++ b/README
@@ -197,6 +197,8 @@ Currently, additional logging is available for:
mutex Dump info only related to mutex up/down ops
profile Dump info related to profile extensions
time Dump info related to internal time keeping
+ net Dump info related to networking connections
+ rate Dump info related to IO rate switching
? or help Show available debug options.
One can specify multiple debug options: e.g. --debug=file,mem will enable