Date: Mon, 29 Oct 2007 08:37:41 +0100 From: Goran Lowkrantz <goran.lowkrantz@ismobile.com> To: Brian Behlendorf <brian@hyperreal.org>, stable@freebsd.org Subject: Re: MFC requests for 6.3 Message-ID: <B25F3C0E0648F87654BB76FA@viglaf> In-Reply-To: <20071028235824.M54656@taz3> References: <200710282222.QAA01991@lariat.net> <20071028152700.T98576@taz3> <C745421686472A10BBEED310@[10.255.253.2]> <20071028235824.M54656@taz3>
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<brian@hyperreal.org> wrote: > On Mon, 29 Oct 2007, Goran Lowkrantz wrote: >>> On Sun, 28 Oct 2007, Brett Glass wrote: >>>> I would like to request that some useful work on networking be MFCed >>>> from -CURRENT to -STABLE in time for the release of FreeBSD 6.3. >>> >>> The thing that's worried me, following only stable@freebsd.org traffic, >>> were the reports about the new em driver (6.6.6?) causing hangs and >>> other problems with people who have been updating RELENG_6 - have those >>> who had those problems seen their issues resolved? I've got remote >>> boxes using em that I can't risk making inaccessible and can't test >>> locally. >> >> All my problems with watchdog timeouts and em 6.6.6 occurred when em >> shared interrupt with USB but I don't know if it's MB, em or usb that's >> the problem. Removing USB from the kernel or switching to polling and >> the driver works just fine. >> >> The fact that one of my test machines didn't have any problems was >> because it had no USB in it's kernel. I had removed USB as I had >> problems with watchdog timeouts with the bge driver when I first >> upgraded to the D915GAV MB ages ago. The bge also shared interrupt with >> USB. > > Thanks. /var/run/dmesg.boot says my em0 and em1 don't share an IRQ with > USB or anyone else, so sounds like I'm in the clear, yay. But it still > seems like something the vendor (Intel?) should be looking into before a > another release on RELENG_6 is cut - even if USB is the culprit, it > sounded like the problems started for em users when the driver was > updated from 6.2.9 to 6.6.6. > Yes, that's correct. But then 6.6.6 is faster, so it may be that we have a timing problem in any driver when they share interrupt with a Gigant locked driver. Isn't there a new non-Gigant USB driver that is waiting for testers? I have two workstations with em that needs usb that I could test the combination on. /glz
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