seems tasks are hogging your cpu/memory resource, did you check status your servicing processes?
在 2013-03-27三的 12:55 +1100，Robert Norris写道： > In the last two weeks we've had three servers (identical hardware, > software and load) hang. The details in this report are from one that > hung last night. > > They're all IMAP servers servicing many hundreds of users, so several > thousand processes and active connections. There's been two major > application level changes in the last couple of weeks, corresponding to > the time where these hangs started. One is that we now do mail event > notifications directly to user clients, so more TCP connections. The > other is that we're now maintaining live search indexes, so a lot more > disk and tmpfs IO. > > All that said, we're not under what we'd consider to be heavy load. When > they're running, the servers are fast and responsive. > > During the hang itself, the machine responds to pings, and TCP > connections can be established, but the servicing processes never > respond. The console shows a new "BUG: soft lockup" line every few > seconds, and will not respond to keyboard input. It is a virtual console > though, which may or may not make a difference, I'm not sure. > > The kernel is 3.4.33 with AUFS patches applied. However there are no > AUFS mounts on this machine; we use this elsewhere. If you think that's > a problem I can rebuild for this machine without it. > > Attached are various bits of information requested in REPORTING-BUGS. > I'm not entirely sure what else is relevant. I'm happy to supply any > other information and test things, just let me know. > > Thanks, > Rob. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
