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Not long ago, I griped about 2.6.13 being _very_ slow to boot and run. |
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My original email is at the bottom. |
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|
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I've since recompiled the kernel without SMP and Hyperthreading, and the |
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system is _much_ faster. |
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|
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So, there is a problem with 2.6.13 and SMP or Hyperthreaded machines. |
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Can anyone else confirm this? What should I do? Is there a kernel.org |
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bugzilla? Or perhaps I should put it in the gentoo bugzilla? |
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|
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Any pointers would be appreciated... |
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|
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thanks. |
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|
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On Tue, 2005-09-27 at 12:11 +0930, Iain Buchanan wrote: |
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> I just compiled 2.6.13-gentoo-r2 with mostly the same options as |
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> 2.6.12-gentoo-r7 (my reference point). The first time I booted, it took |
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> about 10-15 minutes on my 3GHz P4 laptop! I watched the gdm background |
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> slowly display over about 30 seconds. |
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> |
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> I thought it might have something to do with the new default timer |
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> frequency, which I set to 250Hz instead of 1000Hz (which is the default |
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> for pre 2.6.13 kernels). According to various online sites, 250Hz |
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> should still be just as usable, and may even use less power, increasing |
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> my battery performance... |
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> |
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> So I changed the timer frequency back to 1000Hz, recompiled and now it |
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> seems a little faster, but no where near 2.6.12. It now boots in maybe |
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> 5 minutes, and the gdm theme takes about 5s to display. |
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> |
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> glxgears (not maximised) gives me about 30 fps with a radeon 9700! |
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> |
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> I checked the frequency governor, and the default is still |
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> 'performance'. /proc/acpi/processor/CPU0/throttling shows the maximum |
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> frequency is active as per normal. |
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> |
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> Other kernel options I changed are: |
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> - support for software suspend added (could this be it? I definitely saw |
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> the message that no valid suspend was found in my swapfile, |
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> and /proc/swaps shows that I have swap enabled as per usual) |
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> - removed unnecessary SCSI drivers (I don't have anything SCSI) |
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> - removed SATA support (I definitely don't have SATA) |
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> |
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> Info: |
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> Dell Ispiron 9100, 3 GHz HT Pentium 4 |
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> 2.6.12 and 2.6.13: SMP support for 2 processors included |
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> |
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> I've seen 1 post online about the same thing - slow running 2.6.13, so |
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> surely there must be some people in the world running it ok! Any help |
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> on this would be appreciated. |
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> |
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> TIA, |
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|
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-- |
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Iain Buchanan <iaindb@××××××××××××.au> |
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|
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-- |
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