Issue #2534 has been updated by sepherosa.
On Wed, Mar 27, 2013 at 3:42 PM, Francois Tigeot via Redmine <[email protected]> wrote: > > Issue #2534 has been reported by ftigeot. > > ---------------------------------------- > Bug #2534: Network connections freeze with heavy email traffic > http://bugs.dragonflybsd.org/issues/2534 > > Author: ftigeot > Status: New > Priority: Normal > Assignee: > Category: > Target version: > > > When under heavy load (receiving a stream of mails at 1Gb/s from a LAN > machine), network connections freeze on a mail relay machine. > This machine is also a PPP/ADSL router. > > The console shows this message: > Warning, objcache(cluster mbuf): Exhausted! > > netstat -m output: > 5306/4480 mbuf clusters in use (current/max) > > Some processes (most often ppp and sendmail) end up in a weird state, as > shown by these top outputs: > > PID USERNAME NICE SIZE RES STATE CPU TIME CTIME CPU COMMAND > 1879 root 0 14M 2864K CPU0 0 0:00 0:00 0.34% top > 260 root 0 24M 2476K tunread 2 0:05 0:05 0.00% ppp > > PID USERNAME NICE SIZE RES STATE CPU TIME CTIME CPU COMMAND > 82699 ftigeot 0 15M 2872K CPU3 3 0:00 0:00 0.39% top > 265 root 0 25M 1172K objcache 1 154:06 154:06 0.00% ppp > > Only a reboot allows the machine to resume network operations. > > > A core dump is available in leaf:~ftigeot/crash/crash.objcache I suggest to test the latest master, many network bugs are fixed since the kernel version that crashed. Best Regards, sephe -- Tomorrow Will Never Die ---------------------------------------- Bug #2534: Network connections freeze with heavy email traffic http://bugs.dragonflybsd.org/issues/2534 Author: ftigeot Status: New Priority: Normal Assignee: Category: Target version: When under heavy load (receiving a stream of mails at 1Gb/s from a LAN machine), network connections freeze on a mail relay machine. This machine is also a PPP/ADSL router. The console shows this message: Warning, objcache(cluster mbuf): Exhausted! netstat -m output: 5306/4480 mbuf clusters in use (current/max) Some processes (most often ppp and sendmail) end up in a weird state, as shown by these top outputs: PID USERNAME NICE SIZE RES STATE CPU TIME CTIME CPU COMMAND 1879 root 0 14M 2864K CPU0 0 0:00 0:00 0.34% top 260 root 0 24M 2476K tunread 2 0:05 0:05 0.00% ppp PID USERNAME NICE SIZE RES STATE CPU TIME CTIME CPU COMMAND 82699 ftigeot 0 15M 2872K CPU3 3 0:00 0:00 0.39% top 265 root 0 25M 1172K objcache 1 154:06 154:06 0.00% ppp Only a reboot allows the machine to resume network operations. A core dump is available in leaf:~ftigeot/crash/crash.objcache -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account
