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SubjectRe: [stable] Nasty regression from .27.7 to .27.8: idle samba goes crazy
On Thu, Dec 11, 2008 at 11:54:12PM +0100, Holger Hoffstätte wrote:
>
> Dear all -
>
> Thanks for your efforts.
>
> Manfred Spraul wrote:
> > Chuck Ebbert wrote:
> >> On Mon, 8 Dec 2008 23:22:46 +0100
> >> Jan Rekorajski <baggins@sith.mimuw.edu.pl> wrote:
> >>
> >>
> >>> On Mon, 08 Dec 2008, Stefan Richter wrote:
> >>>
> >>>
> >>>>>>> On Monday, 8 of December 2008, Holger Hoffstaette wrote:
> >>>>>>>
> >>>>>>>> The system is a generic old single-core P4 box with a single
> >>>>>>>> SATA drive,
> >>>>>>>> Gentoo userland and Samba is 3.0.33 (in async mode). The kernel
> >>>>>>>> has no
> >>>>>>>> patches or binary drivers.
> >>>>>>>>
> >>>> Holger, it may be unrelated to the issue, but to be sure: Which
> >>>> network
> >>>> card driver do you use?
> >>>>
> >>> I think you can safely rule out NIC, I'm also seeing this behaviour on a
> >>> brand new server with imap hanging in some busy-loop.
> >>> Network card in my case:
> >>> Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
> >>>
> >>> What I observer was one CPU doing 100% system work, and the number of
> >>> timer interrupts went from 1k per second to 4k (for the whole system).
> >>>
> > Could you try the attached patch?
> > It should fix the bug.
>
> I just built 2.6.27.9-rc1 and disconnected the Windowz box several times.
> For now smbd does not seem to go into a death spin any more, even though
> as far as I can tell .9-rc1 does not contain Manfred'd latest patch. Not
> sure what that means, if anything.

.9-rc1 does contain a cifs patch, so perhaps that resolved the issue for
you.

thanks,

greg k-h
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