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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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