.TP
.B pmemblk
Read and write using filesystem DAX to a file on a filesystem
-mounted with DAX on a persistent memory device through the NVML
+mounted with DAX on a persistent memory device through the PMDK
libpmemblk library.
.TP
.B dev\-dax
Read and write using device DAX to a persistent memory device (e.g.,
-/dev/dax0.0) through the NVML libpmem library.
+/dev/dax0.0) through the PMDK libpmem library.
.TP
.B external
Prefix to specify loading an external I/O engine object file. Append
.TP
.B libpmem
Read and write using mmap I/O to a file on a filesystem
-mounted with DAX on a persistent memory device through the NVML
+mounted with DAX on a persistent memory device through the PMDK
libpmem library.
.SS "I/O engine specific parameters"
In addition, there are some parameters which are only valid when a specific
still respecting ordering. The result is the same I/O pattern to a given
device, but different timings.
.TP
+.BI replay_time_scale \fR=\fPint
+When replaying I/O with \fBread_iolog\fR, fio will honor the original timing
+in the trace. With this option, it's possible to scale the time. It's a
+percentage option, if set to 50 it means run at 50% the original IO rate in
+the trace. If set to 200, run at twice the original IO rate. Defaults to 100.
+.TP
.BI replay_redirect \fR=\fPstr
While replaying I/O patterns using \fBread_iolog\fR the default behavior
is to replay the IOPS onto the major/minor device that each IOP was recorded
.BI log_compression_cpus \fR=\fPstr
Define the set of CPUs that are allowed to handle online log compression for
the I/O jobs. This can provide better isolation between performance
-sensitive jobs, and background compression work.
+sensitive jobs, and background compression work. See \fBcpus_allowed\fR for
+the format used.
.TP
.BI log_store_compressed \fR=\fPbool
If set, fio will store the log files in a compressed format. They can be