From: Brian Haley <brian.haley@hp.com>
To: Wolfgang Walter <linux@stwm.de>, netdev@vger.kernel.org
Subject: Re: Big performance loss from 3.4.63 to 3.10.13 when routing ipv4
Date: Tue, 01 Oct 2013 14:57:33 -0400 [thread overview]
Message-ID: <524B1B1D.3050304@hp.com> (raw)
In-Reply-To: <3244031.uQGDddGTLF@h2o.as.studentenwerk.mhn.de>
On 10/01/2013 12:39 PM, Wolfgang Walter wrote:
> Hello,
>
> I tried to upgrade one of our routers to 3.10.13 from 3.4.63 and I see a
> dramatic performance loss. I tried 3.11.2 and it is still there.
>
> *** Symptoms:
>
> All network traffic over the router become slow and sluggish. If one pings the
> router there is a packet loss. After about 2 minutes the traffic completely
> stalls for about 1 minute. Then it works again as in the beginning to then
> stall again. And so on.
>
> This happens even with rather moderate traffic. While still routing the CPU
> utilization is higher than it is with 3.4.63 but only moderately.
>
> When it stalls no network traffic seems possible (but to loopback). If one
> tries to ping from the router any target (even if it is on a interface with no
> traffic at all) one gets:
>
> ping: sendmsg: No buffer space available
dmesg show anything? I've seen this happen when the neighbour table is full,
but that's not a typical occurence.
-Brian
next prev parent reply other threads:[~2013-10-01 18:57 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-01 16:39 Big performance loss from 3.4.63 to 3.10.13 when routing ipv4 Wolfgang Walter
2013-10-01 18:57 ` Brian Haley [this message]
2013-10-01 19:44 ` Wolfgang Walter
2013-10-01 22:20 ` Hannes Frederic Sowa
2013-10-22 19:07 ` Wolfgang Walter
2013-10-22 19:46 ` David Miller
2013-10-23 8:12 ` Steffen Klassert
2013-10-23 11:33 ` Wolfgang Walter
2013-10-23 12:00 ` Eric Dumazet
2013-10-23 12:26 ` Steffen Klassert
2013-10-23 15:57 ` Wolfgang Walter
2013-10-23 12:04 ` Steffen Klassert
2013-10-23 16:05 ` Wolfgang Walter
[not found] ` <3169911.kTmZ0BZVVr@h2o.as.studentenwerk.mhn.de>
[not found] ` <1382547992.7572.31.camel@edumazet-glaptop.roam.corp.google.com>
2013-10-23 22:52 ` Wolfgang Walter
2013-10-25 8:01 ` Steffen Klassert
2013-10-25 8:50 ` Eric Dumazet
2013-10-25 9:20 ` Steffen Klassert
2013-10-28 4:43 ` David Miller
2013-10-28 6:17 ` Eric Dumazet
2013-10-28 11:30 ` Steffen Klassert
2013-10-25 9:33 ` Wolfgang Walter
2013-10-24 11:07 ` Wolfgang Walter
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