Hi,
I got a tap device refcnt leak message when I was detaching the device
and it's deadloop for waiting the usage count decrease to 0.
The log is:
unregister_netdevice: waiting for pae_tap0 to become free. Usage count = 1
Unfortunately, it happened only once unit now, I cannot reproduce
On 2016/3/30 20:56, Sergei Shtylyov wrote:
Hello.
On 3/30/2016 8:16 AM, Yang Yingliang wrote:
When task A hold the sk owned in tcp_sendmsg, if lots of packets
arrive and the packets will be added to backlog queue. The packets
will be handled in release_sock called from tcp_sendmsg. When
On 2016/3/30 21:47, Eric Dumazet wrote:
On Wed, 2016-03-30 at 13:56 +0800, Yang Yingliang wrote:
Sorry, I made a mistake. I am very sure my kernel has these two patches.
And I can get some dropping of the packets in 10Gb eth.
# netstat -s | grep -i backlog
TCPBacklogDrop: 4135
On 2016/4/9 1:04, Eric Dumazet wrote:
On Fri, 2016-04-08 at 12:53 -0400, David Miller wrote:
From: Eric Dumazet <eric.duma...@gmail.com>
Date: Fri, 08 Apr 2016 07:44:25 -0700
On Fri, 2016-04-08 at 19:18 +0800, Yang Yingliang wrote:
I expand tcp_adv_win_scale and tcp_rmem.
On 2016/4/7 22:51, Eric Dumazet wrote:
On Thu, 2016-04-07 at 03:21 -0700, Eric Dumazet wrote:
Please do not send patches before really understanding the issue you
have.
Having a backlog of 12506206 bytes is ridiculous. Dropping packets is
absolutely fine if this ever happens.
Something is
On 2016/4/11 20:13, Eric Dumazet wrote:
On Mon, 2016-04-11 at 19:57 +0800, Yang Yingliang wrote:
On 2016/4/8 22:44, Eric Dumazet wrote:
On Fri, 2016-04-08 at 19:18 +0800, Yang Yingliang wrote:
I expand tcp_adv_win_scale and tcp_rmem. It has no effect.
Try :
echo -2 >/proc/sys/net/i
On 2016/4/8 22:44, Eric Dumazet wrote:
On Fri, 2016-04-08 at 19:18 +0800, Yang Yingliang wrote:
I expand tcp_adv_win_scale and tcp_rmem. It has no effect.
Try :
echo -2 >/proc/sys/net/ipv4/tcp_adv_win_scale
And restart your flows.
cat /proc/sys/net/ipv4/tcp_rmem
10240 2097152 10485
On 2016/4/12 10:59, Yang Yingliang wrote:
On 2016/4/11 20:13, Eric Dumazet wrote:
On Mon, 2016-04-11 at 19:57 +0800, Yang Yingliang wrote:
On 2016/4/8 22:44, Eric Dumazet wrote:
On Fri, 2016-04-08 at 19:18 +0800, Yang Yingliang wrote:
I expand tcp_adv_win_scale and tcp_rmem. It has
On 2016/3/30 13:34, Eric Dumazet wrote:
On Tue, 2016-03-29 at 22:25 -0700, Eric Dumazet wrote:
On Wed, 2016-03-30 at 13:16 +0800, Yang Yingliang wrote:
When task A hold the sk owned in tcp_sendmsg, if lots of packets
arrive and the packets will be added to backlog queue. The packets
are handled. This may leads to the
new packets be dropped because the lenth is too big. So set the
lenth to 0 immediately after it's detached from sk.
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
net/core/sock.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/core/so
On 2016/3/30 13:25, Eric Dumazet wrote:
On Wed, 2016-03-30 at 13:16 +0800, Yang Yingliang wrote:
When task A hold the sk owned in tcp_sendmsg, if lots of packets
arrive and the packets will be added to backlog queue. The packets
will be handled in release_sock called from tcp_sendmsg. When
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