.SS "Measurements and reporting"
.TP
.BI per_job_logs \fR=\fPbool
-If set, this generates bw/clat/iops log with per file private filenames. If
-not set, jobs with identical names will share the log filename. Default:
+If set to true, fio generates bw/clat/iops logs with per job unique filenames.
+If set to false, jobs with identical names will share a log filename. Note that
+when this option is set to false log files will be opened in append mode and if
+log files already exist the previous contents will not be overwritten. Default:
true.
.TP
.BI group_reporting