Date: Wed, 06 Apr 2005 11:43:14 -0700 From: Nate Lawson <nate@root.org> To: Pierre-Luc Drouin <pldrouin@pldrouin.net> Cc: Matthias Buelow <mkb@mkbuelow.net> Subject: Re: 5.4-prerelease - hanging under load Message-ID: <42542DC2.70405@root.org> In-Reply-To: <42542D03.7050007@pldrouin.net> References: <200504040609.j3469g7b001419@drjekyll.mkbuelow.net> <425425BC.6080006@pldrouin.net> <42542C6F.6010508@root.org> <42542D03.7050007@pldrouin.net>
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Pierre-Luc Drouin wrote: > Nate Lawson wrote: > >> Pierre-Luc Drouin wrote: >> >>> Matthias Buelow wrote: >>> >>>> Nate Lawson <nate@root.org> writes: >>>> >>>> >>>> >>>>> sysctl dev.cpu and look at the current frequency setting. If low, >>>>> then your system is affected and will be fixed soon when I mfc. If >>>>> not, perhaps you have an interrupt storm (vmstat -i) >>>>> >>>> >>>> >>>> >>>> >>>> Just for the record. I ran vmstat -i in a loop while untarring the >>>> thunderbird source (causing degraded interactive responsiveness, as >>>> reported in an earlier mail), and couldn't see any noticable >>>> increase in >>>> interrupt rate. >>>> >>>> mkb. >>>> >>>> >>>> >>> I've noticed that the idle process is using sometimes as much as 60% >>> of my CPU. Could it be a relation between that and the lag we have >>> with 5.4? >> >> >> >> That is different. sysctl hw.acpi.cpu.cx_lowest="C1" to see if that >> works around it. >> > I already have this Then it's not acpi since c1 is the old (even 4.x) behavior. -- Nate
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