Tonghao Zhang 441abde4cd net: vhost: add rx busy polling in tx path ... This patch improves the guest receive performance. On the handle_tx side, we poll the sock receive queue at the same time. handle_rx do that in the same way. We set the poll-us=100us and use the netperf to test throughput and mean latency. When running the tests, the vhost-net kthread of that VM, is alway 100% CPU. The commands are shown as below. Rx performance is greatly improved by this patch. There is not notable performance change on tx with this series though. This patch is useful for bi-directional traffic. netperf -H IP -t TCP_STREAM -l 20 -- -O "THROUGHPUT, THROUGHPUT_UNITS, MEAN_LATENCY" Topology: [Host] ->linux bridge -> tap vhost-net ->[Guest] TCP_STREAM: * Without the patch: 19842.95 Mbps, 6.50 us mean latency * With the patch: 37598.20 Mbps, 3.43 us mean latency Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-09-26 20:25:55 -07:00
..
Kconfig	vhost: allow vhost-scsi driver to be built-in	2018-08-22 01:01:32 +03:00
Kconfig.vringh	vhost: split out vringh Kconfig	2016-08-02 16:54:28 +03:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
net.c	net: vhost: add rx busy polling in tx path	2018-09-26 20:25:55 -07:00
scsi.c	virtio, vhost: fixes, tweaks	2018-08-24 08:45:19 -07:00
test.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
test.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vhost.c	net: vhost: lock the vqs one by one	2018-09-26 20:25:54 -07:00
vhost.h	vhost: switch to use new message format	2018-08-06 10:41:04 -07:00
vringh.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
vsock.c	fw_cfg, vhost: features fixes	2018-04-06 19:21:41 -07:00