Add vsync io engine

[fio.git] / README

diff --git a/README b/README
index 4c58d376a5e7c8b6caa7a91a589f3d9b20bef5a3..940839c3892a354da5332b1234dca4d914e1b473 100644 (file)
--- a/README
+++ b/README
@@ -136,14 +136,16 @@ The job file parameters are:
        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,
-                       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.
+                       psync for regular pread/pwrite io, vsync for regular
+                       readv/writev (with queuing emulation) 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,