Re: [gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12!
On Tue, 2005-10-04 at 09:36 +0100, Richard Brown wrote: On 04/10/05, Iain Buchanan [EMAIL PROTECTED] wrote: Any pointers would be appreciated... Are you using gentoo-sources? This is the recommended routine here. http://dev.gentoo.org/~dsd/genpatches/bugs.htm The kernel does have a bugzilla, it's http://bugzilla.kernel.org thanks. Luckily I tried bugzilla.kernel.org before I tried the suggestions on dev.gentoo.org. For those following this thread, it appears to be a problem with 2.6.13 and C-states... The original reporter also had a Dell Inspiron 9100, so maybe its only that laptop. More here: http://bugzilla.kernel.org/show_bug.cgi?id=5165 There are two patches on bugzilla above, which I'm going to try out. Hopefully they'll make it into 2.6.13.x soon! -- Iain Buchanan [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12!
On 04/10/05, Iain Buchanan [EMAIL PROTECTED] wrote: Any pointers would be appreciated... Are you using gentoo-sources? This is the recommended routine here. http://dev.gentoo.org/~dsd/genpatches/bugs.htm The kernel does have a bugzilla, it's http://bugzilla.kernel.org Regards, -- Richard Brown -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12!
Iain Buchanan wrote: Not long ago, I griped about 2.6.13 being _very_ slow to boot and run. My original email is at the bottom. I've since recompiled the kernel without SMP and Hyperthreading, and the system is _much_ faster. So, there is a problem with 2.6.13 and SMP or Hyperthreaded machines. Can anyone else confirm this? What should I do? Is there a kernel.org bugzilla? Or perhaps I should put it in the gentoo bugzilla? Any pointers would be appreciated... thanks. On Tue, 2005-09-27 at 12:11 +0930, Iain Buchanan wrote: Curious. I have used many kernels on many real (2 physical cpus) SMP systems, and have never had problems. In fact they are all currently running 2.6.13 or higher. I haven't used anything on HT cpus though, so I don't know about that. -- gentoo-user@gentoo.org mailing list
[gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12!
Not long ago, I griped about 2.6.13 being _very_ slow to boot and run. My original email is at the bottom. I've since recompiled the kernel without SMP and Hyperthreading, and the system is _much_ faster. So, there is a problem with 2.6.13 and SMP or Hyperthreaded machines. Can anyone else confirm this? What should I do? Is there a kernel.org bugzilla? Or perhaps I should put it in the gentoo bugzilla? Any pointers would be appreciated... thanks. On Tue, 2005-09-27 at 12:11 +0930, Iain Buchanan wrote: I just compiled 2.6.13-gentoo-r2 with mostly the same options as 2.6.12-gentoo-r7 (my reference point). The first time I booted, it took about 10-15 minutes on my 3GHz P4 laptop! I watched the gdm background slowly display over about 30 seconds. I thought it might have something to do with the new default timer frequency, which I set to 250Hz instead of 1000Hz (which is the default for pre 2.6.13 kernels). According to various online sites, 250Hz should still be just as usable, and may even use less power, increasing my battery performance... So I changed the timer frequency back to 1000Hz, recompiled and now it seems a little faster, but no where near 2.6.12. It now boots in maybe 5 minutes, and the gdm theme takes about 5s to display. glxgears (not maximised) gives me about 30 fps with a radeon 9700! I checked the frequency governor, and the default is still 'performance'. /proc/acpi/processor/CPU0/throttling shows the maximum frequency is active as per normal. Other kernel options I changed are: - support for software suspend added (could this be it? I definitely saw the message that no valid suspend was found in my swapfile, and /proc/swaps shows that I have swap enabled as per usual) - removed unnecessary SCSI drivers (I don't have anything SCSI) - removed SATA support (I definitely don't have SATA) Info: Dell Ispiron 9100, 3 GHz HT Pentium 4 2.6.12 and 2.6.13: SMP support for 2 processors included I've seen 1 post online about the same thing - slow running 2.6.13, so surely there must be some people in the world running it ok! Any help on this would be appreciated. TIA, -- Iain Buchanan [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
