HOWTO: clarify the 'wait' statement in iologs

It's a relative time, not absolute wait.

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index bcc72b5882be95e4804a641f151cde13b214b432..bb29826428574a77f0352e279155c4b6adb2cea0 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -2010,6 +2010,7 @@ before it can be used with this format. The offset and length are given in
 bytes. The action can be one of these:
 
 wait       Wait for 'offset' microseconds. Everything below 100 is discarded.
+          The time is relative to the previous wait statement.
 read       Read 'length' bytes beginning from 'offset'
 write      Write 'length' bytes beginning from 'offset'
 sync       fsync() the file