From 8a35c71ea954894b26cb1af52f4089a228e1e68e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 19 Jun 2007 09:53:31 +0200 Subject: [PATCH] HOWTO: note that clat/slat can be in micro or mili seconds Signed-off-by: Jens Axboe --- HOWTO | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/HOWTO b/HOWTO index 0c243076..4d103c84 100644 --- a/HOWTO +++ b/HOWTO @@ -723,7 +723,10 @@ runt= The runtime of that thread slat= Submission latency (avg being the average, stdev being the standard deviation). This is the time it took to submit the io. For sync io, the slat is really the completion - latency, since queue/complete is one operation there. + latency, since queue/complete is one operation there. This + value can be in miliseconds or microseconds, fio will choose + the most appropriate base and print that. In the example + above, miliseconds is the best scale. clat= Completion latency. Same names as slat, this denotes the time from submission to completion of the io pieces. For sync io, clat will usually be equal (or very close) to 0, -- 2.25.1