Add thread number to log filename

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index fbc455d44797dda6e779f561f1fe77178862583e..ac9606988b2c73b510823bf445300fcb92a67222 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1307,7 +1307,9 @@ write_bw_log=str If given, write a bandwidth log of the jobs in this job
                jobs in their lifetime. The included fio_generate_plots
                script uses gnuplot to turn these text files into nice
                graphs. See write_lat_log for behaviour of given
-               filename. For this option, the suffix is _bw.log.
+               filename. For this option, the suffix is _bw.x.log, where
+               x is the index of the job (1..N, where N is the number of
+               jobs).
 
 write_lat_log=str Same as write_bw_log, except that this option stores io
                submission, completion, and total latencies instead. If no
@@ -1317,14 +1319,16 @@ write_lat_log=str Same as write_bw_log, except that this option stores io
 
                write_lat_log=foo
 
-               The actual log names will be foo_slat.log, foo_clat.log,
-               and foo_lat.log. This helps fio_generate_plot fine the logs
-               automatically.
+               The actual log names will be foo_slat.x.log, foo_clat.x.log,
+               and foo_lat.x.log, where x is the index of the job (1..N,
+               where N is the number of jobs). This helps fio_generate_plot
+               fine the logs automatically.
 
 write_iops_log=str Same as write_bw_log, but writes IOPS. If no filename is
                given with this option, the default filename of
-               "jobname_type.log" is used. Even if the filename is given,
-               fio will still append the type of log.
+               "jobname_type.x.log" is used,where x is the index of the job
+               (1..N, where N is the number of jobs). Even if the filename
+               is given, fio will still append the type of log.
 
 log_avg_msec=int By default, fio will log an entry in the iops, latency,
                or bw log for every IO that completes. When writing to the