Merge branch 'logging'

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 1f523d384ad85f64b38889aa364a4b0f150fec66..88d10a171da9e373ee40e5844b2b1690c6b3db28 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -798,6 +798,9 @@ ioengine=str        Defines how the job issues io to the file. The following
                                overwriting. The writetrim mode works well
                                for this constraint.
 
+                       pmemblk Read and write through the NVML libpmemblk
+                               interface.
+
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine
                                filename, eg ioengine=external:/tmp/foo.o
@@ -1263,10 +1266,14 @@ exitall_on_error        When one job finishes in error, terminate the rest. The
                default is to wait for each job to finish.
 
 bwavgtime=int  Average the calculated bandwidth over the given time. Value
-               is specified in milliseconds.
+               is specified in milliseconds. If the job also does bandwidth
+               logging through 'write_bw_log', then the minimum of this option
+               and 'log_avg_msec' will be used.  Default: 500ms.
 
 iopsavgtime=int        Average the calculated IOPS over the given time. Value
-               is specified in milliseconds.
+               is specified in milliseconds. If the job also does IOPS logging
+               through 'write_iops_log', then the minimum of this option and
+               'log_avg_msec' will be used.  Default: 500ms.
 
 create_serialize=bool  If true, serialize the file creating for the jobs.
                        This may be handy to avoid interleaving of data