[Samba] smbd's using up 100% of all cpu's and load avg slowly going up

[Sabuj Pattanayek]

The top level parent process? That's going to be difficult/impossible on a
production system . For now I've just created a cron that runs every few
mins that checks for these types of smbd processes with >50% cpu usage, and
if it's not in the output of net status sessions, and has no active tcp
connections in the output of netstat I kill the smbd process.


On Wed, Jul 16, 2014 at 9:50 AM, Ray Van Dolson <rvandolson at esri.com> wrote:

> Bizarre.  I wonder if you couldn't start smbd in the foreground with
> strace and see if the problem reoccurs.
>
> Ray
>
> On Wed, Jul 16, 2014 at 07:18:32AM -0500, Sabuj Pattanayek wrote:
> > it's sockets also aren't connected to any ipv4 endpoints, just stream
> sockets.
> >
> >
> > On Wed, Jul 16, 2014 at 7:17 AM, Sabuj Pattanayek <sabujp at gmail.com>
> wrote:
> >
> >     I went into /proc/4122/fd and I see which log file it has open so I
> see
> >     which client had it open, but running net status sessions | grep
> pidNum
> >     doesn't show it, so it seems like smbd isn't being cleaned up
> properly?
> >
> >
> >     On Wed, Jul 16, 2014 at 7:10 AM, Sabuj Pattanayek <sabujp at gmail.com>
> wrote:
> >
> >         absolutely nothing, looks like their spinning on something, e.g.
> :
> >
> >         strace -ff -p 4122
> >
> >         <no output>
> >
> >
> >         On Tue, Jul 15, 2014 at 11:59 PM, Ray Van Dolson <
> rvandolson at esri.com>
> >         wrote:
> >
> >             What do you see when you do an strace on one of the offending
> >             processes?
> >
> >             Sent from my iPad
> >
> >             > On Jul 15, 2014, at 9:41 PM, "Sabuj Pattanayek" <
> sabujp at gmail.com
> >             > wrote:
> >             >
> >             > Hi,
> >             >
> >             > Running samba sernet 4.1.6-7, I've noticed the load avg
> slowly /
> >             steadily
> >             > creeping up (.e.g > 100). I'm now noticing that several
> smbd
> >             processes are
> >             > at 100%. I don't actually notice that much bandwidth usage
> on the
> >             system
> >             > (e.g. iptraf/iftop). Any idea what's causing this?
> >             >
> >             > Restarting smbd helps for a few days, but then the high
> load avg
> >             returns.
> >             >
> >             > Thanks,
> >             > Sabuj
>