reserved name, meaning stdin or stdout, depending on the read/write direction
set.
.TP
+.BI filename_format \fR=\fPstr
+If sharing multiple files between jobs, it is usually necessary to have
+fio generate the exact names that you want. By default, fio will name a file
+based on the default file format specification of
+\fBjobname.jobnumber.filenumber\fP. With this option, that can be
+customized. Fio will recognize and replace the following keywords in this
+string:
+.RS
+.RS
+.TP
+.B $jobname
+The name of the worker thread or process.
+.TP
+.B $jobnum
+The incremental number of the worker thread or process.
+.TP
+.B $filenum
+The incremental number of the file for that worker thread or process.
+.RE
+.P
+To have dependent jobs share a set of files, this option can be set to
+have fio generate filenames that are shared between the two. For instance,
+if \fBtestfiles.$filenum\fR is specified, file number 4 for any job will
+be named \fBtestfiles.4\fR. The default of \fB$jobname.$jobnum.$filenum\fR
+will be used if no other format specifier is given.
+.RE
+.P
+.TP
.BI lockfile \fR=\fPstr
Fio defaults to not locking any files before it does IO to them. If a file or
file descriptor is shared, fio can serialize IO to that file to make the end
Read-write locking on the file. Many readers may access the file at the same
time, but writes get exclusive access.
.RE
+.RE
.P
.BI opendir \fR=\fPstr
Recursively open any files below directory \fIstr\fR.
used identically to normal parameters, with the caveat that when used on the
command line, the must come after the ioengine that defines them is selected.
.TP
+.BI (cpu)cpuload \fR=\fPint
+Attempt to use the specified percentage of CPU cycles.
+.TP
+.BI (cpu)cpuchunks \fR=\fPint
+Split the load into cycles of the given time. In microseconds.
+.TP
.BI (libaio)userspace_reap
Normally, with the libaio engine in use, fio will use
the io_getevents system call to reap newly returned events.