engines/libblkio: Add option libblkio_wait_mode

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index ad061caa0d9117f35a08301729084efb571d1dc5..1a810214288d8cf5bc777455ca008270eddebdbb 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -2633,13 +2633,27 @@ properties depend on the libblkio version in use and are listed at
 \fIhttps://libblkio.gitlab.io/libblkio/blkio.html#properties\fR
 .TP
 .BI (libblkio)hipri
-Use poll queues.
+Use poll queues. This is incompatible with \fBlibblkio_wait_mode=eventfd\fR.
 .TP
 .BI (libblkio)libblkio_vectored
 Submit vectored read and write requests.
 .TP
 .BI (libblkio)libblkio_write_zeroes_on_trim
 Submit trims as "write zeroes" requests instead of discard requests.
+.TP
+.BI (libblkio)libblkio_wait_mode \fR=\fPstr
+How to wait for completions:
+.RS
+.RS
+.TP
+.B block \fR(default)
+Use a blocking call to \fBblkioq_do_io()\fR.
+.TP
+.B eventfd
+Use a blocking call to \fBread()\fR on the completion eventfd.
+.TP
+.B loop
+Use a busy loop with a non-blocking call to \fBblkioq_do_io()\fR.
 .SS "I/O depth"
 .TP
 .BI iodepth \fR=\fPint