From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Interesting machine lockup with 8139too driver. Date: Sat, 12 Apr 2003 13:33:05 -0700 Sender: netdev-bounce@oss.sgi.com Message-ID: <3E987801.2080107@candelatech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: To: "'netdev@oss.sgi.com'" Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org I was beating my machine with 8139 NICs (and a slow CPU and only 128MB RAM) by running a lot of UDP and TCP connections through it... I usually set my socket buffers quite large, so they may be consuming too much of the vital kernel RAM. After a while, I saw this repeated over and over on the console: eth[01]: Memory squeeze, dropping packet. Now, that is the only thing I can see on this machine. I cannot get a bash prompt and changing virtual terminals does not work. I did not see the OOM handler kick in, though it's possible it scrolled off the screen. At the least, it may be worthwhile to throttle the squeeze messages... As a caveat: I'm running some of my own hacked up networking code, and it's possible its leaking memory or doing something else bad. I have not seen this problem on my other machine with different NIC (and faster CPU and more RAM), though. Take it easy, Ben -- Ben Greear President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear