- CALL FOR WORKSHOPS PROPOSALS
WorldCIST'19 - 7th World Conference on Information Systems and Technologies
16th-19th of April 2019, La Toja Island, Galicia, Spain
http://www.worldcist.org/
From: Tonghao Zhang
The patch uses vhost_has_work_pending() to check if
the specified handler is scheduled, because in the most case,
vhost_has_work() return true when other side handler is added
to worker list. Use the vhost_has_work_pending() insead of
vhost_has_work().
Topology:
[Host]
From: Tonghao Zhang
In the handle_tx, the busypoll will vhost_net_disable/enable_vq
because we have poll the sock. This can improve performance.
This is suggested by Toshiaki Makita and Jason Wang.
If the rx handle is scheduled, we will not enable vq, because it's
not necessary. We do it not
From: Tonghao Zhang
The bitmap of vhost_dev can help us to check if the
specified poll is scheduled. This patch will be used
for next two patches.
Signed-off-by: Tonghao Zhang
---
drivers/vhost/net.c | 11 +--
drivers/vhost/vhost.c | 17 +++--
drivers/vhost/vhost.h | 7
From: Tonghao Zhang
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
From: Tonghao Zhang
Factor out generic busy polling logic and will be
used for in tx path in the next patch. And with the patch,
qemu can set differently the busyloop_timeout for rx queue.
To avoid duplicate codes, introduce the helper functions:
* sock_has_rx_data(changed from sk_has_rx_data)
From: Tonghao Zhang
Use the VHOST_NET_VQ_XXX as a subclass for mutex_lock_nested.
Signed-off-by: Tonghao Zhang
Acked-by: Jason Wang
---
drivers/vhost/net.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index
From: Tonghao Zhang
This patch changes the way that lock all vqs
at the same, to lock them one by one. It will
be used for next patch to avoid the deadlock.
Signed-off-by: Tonghao Zhang
Acked-by: Jason Wang
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 24 +++-
1
From: Tonghao Zhang
This patches improve 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.
For more performance report, see patch 4, 6, 7
Tonghao Zhang (7):
net: vhost: lock the vqs one by one
net:
