Date: Mon, 28 Nov 2005 17:14:24 -0600 From: Scot Hetzel <swhetzel@gmail.com> To: =?ISO-8859-1?Q?Eirik_=D8verby?= <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: <790a9fff0511281514ra5519acq617964fac1d1f9e4@mail.gmail.com> In-Reply-To: <9720F96D-A0F7-4639-8852-63A0F2C1FCDE@anduin.net> References: <93F6B911-8C64-4F5C-81F9-80EC271ED298@anduin.net> <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> <9720F96D-A0F7-4639-8852-63A0F2C1FCDE@anduin.net>
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On 11/28/05, Eirik =D8verby <ltning@anduin.net> wrote: > Update: The diff below was made after making sure both systems are > running the exact same kernel. Behavior is the same. Building new > kernels (6-STABLE) now to get out of the BETA stage. > > /Eirik > > On Nov 28, 2005, at 22:53 , Eirik =D8verby 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... > > use sysctl to find out what time counters are available on the slow box: sysctl kern.timecounter : kern.timecounter.hardware: ACPI-fast kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0) dummy(-1000000) : Then try setting the Timecounter on the slow box to ACPI-safe (if available) by using sysctl sysctl kern.timecounter.hardware=3DACPI-safe If this fixes the problem, then add the following to /etc/sysctl.conf: kern.timecounter.hardware=3DACPI-safe Scot -- DISCLAIMER: No electrons were mamed while sending this message. Only slightly bruised.
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