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Message-ID: <20080307101309.GB4203@ff.dom.local> Date: Fri, 7 Mar 2008 10:13:09 +0000 From: Jarek Poplawski <jarkao2@...il.com> To: Oleksandr Samoylyk <oleksandr@...oylyk.sumy.ua> Cc: netdev@...r.kernel.org Subject: Re: pppd soft lockups under load On 06-03-2008 21:43, Oleksandr Samoylyk wrote: > Dear community, > > I'm running a busy pptp-server which serves about 1500 users on about 80 > Mbit/s (> 15000 packets/sec). I use poptop, traffic shaper and basic > firewall rules. > > As for hardware it's a server on SuperMicro Server on X7DB8+ serverboard > server with 8 GB RAM on it running Ubuntu Server Edition. > > As for problem, sometimes I get the following erors in logs: > [ 0.000000] BUG: soft lockup - CPU#3 stuck for 11s! [pppd:65437] ... > root@vpn:~# cat /proc/interrupts > CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 > CPU6 CPU7 ... > 2296: 76853 76976 76639 76692 248073 247957 > 248079 248084 PCI-MSI-edge eth1 > 2297: 266795 266672 267009 266956 93920 94035 > 93914 93908 PCI-MSI-edge eth0 Hi, Maybe it doesn't matter here but I think you should rethink this irq balancing for eths. Here is something interesting: http://marc.info/?l=linux-netdev&m=120349568512423&w=2 Regards, Jarek P. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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