Date: Thu, 17 Feb 2011 11:53:29 -0500 From: John Baldwin <jhb@freebsd.org> To: Erich Weiler <weiler@soe.ucsc.edu> Cc: freebsd-drivers@freebsd.org Subject: Re: MFI Driver Behavior Message-ID: <201102171153.29396.jhb@freebsd.org> In-Reply-To: <4D5D5030.5020904@soe.ucsc.edu> References: <1572482665.142375.1297789046999.JavaMail.root@mail-01.cse.ucsc.edu> <4D5D5030.5020904@soe.ucsc.edu>
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On Thursday, February 17, 2011 11:43:28 am Erich Weiler wrote: > > We are testing a new theory. We believe that the C-states and C1E control on this chipset (in the Dell R610), which are configurable in the BIOS, are affecting the controller in some way. We are disabling them and trying again. I'll post results soon. > > After disabling C-states and CIE in the BIOS on our R610, the Perc H800 > controller now appears stable. My ZFS filesystem appears stable. Life > seems good. > > I wonder what those items in the BIOS are doing in relation to the > kernel to cause this. Well, you can miss clock interrupts which might prevent timeout routines from firing (or they would fire too late). 9 has several changes that should support C1E properly I think. -- John Baldwin
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