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Date: Tue, 9 Dec 2008 12:37:03 -0500 From: Chuck Ebbert <cebbert@...hat.com> To: Jan Rekorajski <baggins@...h.mimuw.edu.pl> Cc: linux-kernel@...r.kernel.org, Holger Hoffstaette <holger@...ards.de>, netdev@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>, Greg KH <greg@...ah.com>, stable@...nel.org, Stefan Richter <stefanr@...6.in-berlin.de>, Manfred Spraul <manfred@...orfullife.com> Subject: Re: Nasty regression from .27.7 to .27.8: idle samba goes crazy On Mon, 8 Dec 2008 23:22:46 +0100 Jan Rekorajski <baggins@...h.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). > Try reverting the idr patch that went into 2.6.27.8. It broke DRM in the Fedora kernel at least. http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob_plain;f=releases/2.6.27.8/lib-idr.c-fix-rcu-related-race-with-idr_find.patch;h=b1145766fb9460a0c0285350b49216355c5b4ad8 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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