On Mon, 16 May 2011 08:39:38 -0400 John Drescher <dresche...@gmail.com> wrote:
> > for a couple of weeks now I occasionally see messages like these in > > the kernel log or our bacula server (bacula 5.0.3 compiled from > > source on centos 5.6 64bit): > > > > ###################################################################### > > INFO: task bacula-sd:12467 blocked for more than 120 seconds. > > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this [...] > Maybe do what it says. > > echo 0 > /proc/sys/kernel/hung_task_timeout_secs I would rather not do this. Tasks hanging on some kind of resource may signalize a problem with the kernel or with the underlying hardware or the combination of the two. But since we have almost zero amount of information about what kind of activity Bacula performs (we just know SCSI layer is somehow involved but this gives almost zero info on its own) it's hard to guess what might be the cause of the problem. Just one fact off the top of my memory: this syndrome of tasks being hung has been present in bug reports regarding activity on certain file systems under massive fsync()-ing. ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
