tools/virtio: make vringh_test use inbuf/outbuf.
authorRusty Russell <rusty@rustcorp.com.au>
Wed, 20 Mar 2013 05:14:26 +0000 (15:14 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Wed, 20 Mar 2013 05:14:53 +0000 (15:14 +1030)
commite538ebaf78455ff87dec2c34d4f9c128844e3f3f
tree1f464016f21f575cdb6ece7940a6ef868438133f
parent282edb36499042a92b71f052f51754ae7ed936e4
tools/virtio: make vringh_test use inbuf/outbuf.

As expected, the simplified accessors are faster.

for i in `seq 50`; do /usr/bin/time -f 'Wall time:%e' ./vringh_test --indirect --eventidx --parallel --fast-vringh; done 2>&1 | stats --trim-outliers:

Before:
Using CPUS 0 and 3
Guest: notified 0, pinged 39062-39063(39063)
Host: notified 39062-39063(39063), pinged 0
Wall time:1.760000-2.220000(1.789167)

After:
Using CPUS 0 and 3
Guest: notified 0, pinged 39037-39063(39062)
Host: notified 39037-39063(39062), pinged 0
Wall time:1.640000-1.810000(1.676875)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
tools/virtio/linux/virtio.h
tools/virtio/vringh_test.c