Add pread/pwrite support to sync engine
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/README b/README
index f713f73..3ef13ea 100644
--- a/README
+++ b/README
@@ -120,13 +120,14 @@
size=x Set file size to x bytes (x string can include k/m/g)
ioengine=x 'x' may be: aio/libaio/linuxaio for Linux aio,
posixaio for POSIX aio, sync for regular read/write io,
- mmap for mmap'ed io, syslet-rw for syslet driven
- read/write, splice for using splice/vmsplice,
- sgio for direct SG_IO io, net for network io, or cpuio
- for a cycler burner load. sgio only works on Linux on
- SCSI (or SCSI-like devices, such as usb-storage or
- sata/libata driven) devices. Fio also has a null io
- engine, which is mainly used for testing fio itself.
+ psync for regular pread/pwrite io, mmap for mmap'ed io,
+ syslet-rw for syslet driven read/write, splice for using
+ splice/vmsplice, sgio for direct SG_IO io, net for
+ network io, or cpuio for a cycler burner load. sgio only
+ works on Linux on SCSI (or SCSI-like devices, such as
+ usb-storage or sata/libata driven) devices. Fio also has
+ a null io engine, which is mainly used for testing fio
+ itself.
iodepth=x For async io, allow 'x' ios in flight
overwrite=x If 'x', layout a write file first.
nrfiles=x Spread io load over 'x' number of files per job,