From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boian Bonev Subject: Re: dst cache overflow messages Date: Mon, 21 Mar 2005 04:05:26 +0200 Message-ID: <20050321020526.20420.qmail@orange.bonev.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=_1_1111370726_20417" Content-Transfer-Encoding: 8bit Cc: buakaw@buakaw.homelinux.net To: Andrew Morton , netdev@oss.sgi.com Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org This is a MIME-formatted message. If you see this text it means that your E-mail software does not support MIME-formatted messages. --=_1_1111370726_20417 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable hi, this happens very rare. it is mostly seen on systems with full bgp table = combined with a massive scan on diverse networks caused by worms/troyans/= etc. you can tuneup your systems' max route cache size by echo sane-big-value > /proc/sys/net/ipv4/route/max_size if you happen to get a permanent attack, you may also need to twiddle wit= h garbage collection values in /proc/sys/net/ipv4/route/gc_* to ensure th= at the route cache will not grow more than the max value for the period o= f gc. b. > ----- Original Message ---- > From: Andrew Morton > To: netdev@oss.sgi.com > Sent: Sun, 20 Mar 2005 16:37:25 -0800 > Subject: Fw: dst cache overflow messages > > > > Begin forwarded message: > > Date: Sun, 20 Mar 2005 22:51:08 +0200 (EET) > From: buakaw@buakaw.homelinux.net > To: linux-kernel@vger.kernel.org > Subject: > > > the system become very laggy. > i use kernel 2.6.10/2.6.11.3 on p4 2.8, msi915p, 3 x 3com905 boomerang.= > and the cpu usage normally be about 12% and after something happens it > boost to 100% and it is used mostly by ksoftirqd/0, and a little bit by= > migration/0 and event/0. and in syslog i found thies lines > > Mar 20 22:21:09 buakaw kernel: printk: 5543 messages suppressed. > Mar 20 22:21:09 buakaw kernel: dst cache overflow > > what can cause this? --=_1_1111370726_20417--