Date: Tue, 29 Nov 2005 08:43:42 -0800 From: pete wright <nomadlogic@gmail.com> To: =?ISO-8859-1?Q?Eirik_=D8verby?= <ltning@anduin.net> Cc: stable@freebsd.org, Scot Hetzel <swhetzel@gmail.com>, Joseph Koshy <joseph.koshy@gmail.com>, Kris Kennaway <kris@obsecurity.org> Subject: Re: Reduced java/tomcat performance 6-beta3 -> 6-stable ? Message-ID: <57d710000511290843s3dc816a9r4bd5a92836aed340@mail.gmail.com> In-Reply-To: <460BE48B-594F-4450-AFA7-1652B7C6800A@anduin.net> References: <84dead720511280545v2bc0bc35jd107da06b9a788cb@mail.gmail.com> <02757598-222D-408E-8B33-C2EE1E6E426E@anduin.net> <20051128211440.GB28963@xor.obsecurity.org> <3A601A32-94D1-49F6-AB06-ED54D50D4B6A@anduin.net> <20051128235911.GA31669@xor.obsecurity.org> <20051129094531.Y23958@anduin.net> <20051129091533.GA41885@xor.obsecurity.org> <C8244498-F58F-4CCD-9BA5-7B9E19EAD517@anduin.net> <20051129103719.GB43032@xor.obsecurity.org> <460BE48B-594F-4450-AFA7-1652B7C6800A@anduin.net>
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On 11/29/05, Eirik =D8verby <ltning@anduin.net> wrote: > > On Nov 29, 2005, at 11:37 , Kris Kennaway wrote: > > > On Tue, Nov 29, 2005 at 10:25:07AM +0100, Eirik ?verby wrote: > >> > >> On Nov 29, 2005, at 10:15 , Kris Kennaway wrote: > >> > >>> On Tue, Nov 29, 2005 at 09:46:09AM +0100, Eirik Oeverby wrote: > >>>> > >>>> > >>>> On Mon, 28 Nov 2005, Kris Kennaway wrote: > >>>> > >>>>> On Mon, Nov 28, 2005 at 10:53:00PM +0100, Eirik ?verby wrote: > >>>>>> Firmware versions are equal. BIOS settings are equal. > >>>>>> However, a diff of the dmesgs show (apart from MAC address > >>>>>> differences): > >>>>>> > >>>>>> 30c30 > >>>>>> < Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000 > >>>>>> --- > >>>>>>> Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000 > >>>>>> > >>>>>> What on earth is that all about? The "slow" box has the ACPI-fast > >>>>>> timecounter... > >>>>> > >>>>> Could be ACPI bugs on your system: > >>>> > >>>> Yes, but the other system is 100% equal - hardware, bios config, > >>>> bios and > >>>> bootblock revision, controller bioses, etc. etc. > >>>> It all matches. > >>> > >>> Clearly they're not 100% equal, but (100-epsilon)%. Your job is to > >>> identify the origin of the epsilon :-) > >> > >> Yea yea ;) Working on it.. > >> Is there a way to force ACPI-safe on the slower system? > > > > I think someone already mentioned this..see the > > kern.timecounter.hardware and other kern.timecounter sysctls. > > I have now forced ACPI-safe on the slow system, to match the fast one. > Too bad though, it made absolutely zero difference. > > I'm upgrading BIOSes on both boxes now, even though they seem equal. > Then I'll see what ACPI debug output shows me. If you have any other > hints or ideas, please let me know... thanks so far. > > /Eirik Have you tired turning off ACPI at boot time. Is there an option to turn it off in the BIOS. This is an HP box correct? I have had some fun in the past chasing down hard to reproduce ACPI problems on HP hardware before, after much software trouble shooting I realized that by turning some knob's in the BIOS got the machines to a stable state (in my case I turned off USB "auto detection"). HTH -pete > > > > > Kris > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- ~~o0OO0o~~ Pete Wright www.nycbug.org NYC's *BSD User Group
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