Date: Tue, 29 Nov 2005 05:37:19 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Eirik ?verby <ltning@anduin.net> Cc: stable@freebsd.org, Joseph Koshy <joseph.koshy@gmail.com>, Kris Kennaway <kris@obsecurity.org> Subject: Re: Reduced java/tomcat performance 6-beta3 -> 6-stable ? Message-ID: <20051129103719.GB43032@xor.obsecurity.org> In-Reply-To: <C8244498-F58F-4CCD-9BA5-7B9E19EAD517@anduin.net> References: <84dead720511280545v2bc0bc35jd107da06b9a788cb@mail.gmail.com> <20187843-76FC-4EAB-AFF8-7493FB0C0077@anduin.net> <84dead720511280654j138635abgcb9cc0978e6c26b7@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>
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--kORqDWCi7qDJ0mEj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 29, 2005 at 10:25:07AM +0100, Eirik ?verby wrote: >=20 > On Nov 29, 2005, at 10:15 , Kris Kennaway wrote: >=20 > >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 =20 > >>>>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, =20 > >>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 :-) >=20 > 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. Kris --kORqDWCi7qDJ0mEj Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDjC9fWry0BWjoQKURAqEXAKCGaqxsD27VABQagBuw6TQTUG9cUACgsFYQ 427SUbRIrFuPxDnwNVqE1q8= =FoEu -----END PGP SIGNATURE----- --kORqDWCi7qDJ0mEj--
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