[ovs-discuss] Tune for large number of connections...

[Sahid Ferdjaoui]

Ok, does it means the server can handle more connections?

----- Original Message -----
From: "Gurucharan Shetty" <shettyg at nicira.com>
To: "Sahid Ferdjaoui" <sahid.ferdjaoui at cloudwatt.com>
Cc: "discuss" <discuss at openvswitch.org>
Sent: Thursday, October 10, 2013 4:46:34 PM
Subject: Re: [ovs-discuss] Tune for large number of connections...

On Thu, Oct 10, 2013 at 2:00 AM, Sahid Ferdjaoui
<sahid.ferdjaoui at cloudwatt.com> wrote:
> Hello all,
>
> I have a vm1 (server) on a hostA uses ovs and some other vmX (client) on hostB or hostC...
>
> When the number of connections go up than about 53000 connections (socket tcp) I get a lot of errors:
> The deal is that, there are enough memory and cpu and if I try a test without ovs (I mean with a physical network) I can easily go up this limit.
>
> version: 1.10.1
1.11 shouldn't show these issues.
>
> do you have an idea for me?
> Thanks a lot
> s.
>
> 2013-10-10T08:55:10Z|00475|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:11Z|00476|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:11Z|00477|ofproto_dpif_governor|INFO|br-int: processed 32768 packets in 0.43 s, enlarging hash table to 256 kB (46522 hashes, 260 setups, 0 shortcuts)
> 2013-10-10T08:55:20Z|00478|ofproto_dpif_governor|INFO|br-int: processed 34824 packets in 5.00 s, shrinking hash table to 128 kB (45536 hashes, 1059 setups, 0 shortcuts)
> 2013-10-10T08:55:20Z|00479|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:21Z|00480|ofproto_dpif_governor|INFO|br-int: processed 32768 packets in 0.53 s, enlarging hash table to 256 kB (43473 hashes, 537 setups, 0 shortcuts)
> 2013-10-10T08:55:21Z|00481|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:21Z|00482|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:22Z|00483|poll_loop|WARN|Dropped 26318 log messages in last 59907 seconds (most recently, 59904 seconds ago) due to excessive rate
> 2013-10-10T08:55:22Z|00484|poll_loop|WARN|Dropped 3 log messages in last 59919 seconds (most recently, 59907 seconds ago) due to excessive rate
> 2013-10-10T08:55:22Z|00485|poll_loop|WARN|wakeup due to 0-ms timeout at ../ofproto/ofproto-dpif.c:1174 (51% CPU usage)
> 2013-10-10T08:55:22Z|00486|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00487|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00488|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00489|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00490|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00491|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00492|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00493|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:22Z|00494|poll_loop|WARN|wakeup due to [POLLIN] on fd 19 (unknown anon_inode:[eventpoll]) at ../lib/dpif-linux.c:1363 (51% CPU usage)
> 2013-10-10T08:55:28Z|00495|ofproto_dpif_governor|INFO|br-int: processed 57094 packets in 5.00 s, shrinking hash table to 128 kB (49357 hashes, 3265 setups, 0 shortcuts)
> 2013-10-10T08:55:31Z|00496|dpif_linux|WARN|system at ovs-system: lost packet on channel 9 (last polled 0 ms ago)
> 2013-10-10T08:55:31Z|00497|ofproto_dpif_governor|INFO|br-int: processed 32768 packets in 0.43 s, enlarging hash table to 256 kB (45883 hashes, 837 setups, 0 shortcuts)
> ...
>
>
>
>
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