Gentoo Archives: gentoo-user

From: Iain Buchanan <iaindb@××××××××××××.au>
To: gentoo-user@l.g.o
Subject: [gentoo-user] 2.6.13 is 10x slower than 2.6.12!
Date: Tue, 27 Sep 2005 02:45:13
Message-Id: 1127788864.11645.20.camel@orpheus
1 I just compiled 2.6.13-gentoo-r2 with mostly the same options as
2 2.6.12-gentoo-r7 (my reference point). The first time I booted, it took
3 about 10-15 minutes on my 3GHz P4 laptop! I watched the gdm background
4 slowly display over about 30 seconds.
6 I thought it might have something to do with the new default timer
7 frequency, which I set to 250Hz instead of 1000Hz (which is the default
8 for pre 2.6.13 kernels). According to various online sites, 250Hz
9 should still be just as usable, and may even use less power, increasing
10 my battery performance...
12 So I changed the timer frequency back to 1000Hz, recompiled and now it
13 seems a little faster, but no where near 2.6.12. It now boots in maybe
14 5 minutes, and the gdm theme takes about 5s to display.
16 glxgears (not maximised) gives me about 30 fps with a radeon 9700!
18 I checked the frequency governor, and the default is still
19 'performance'. /proc/acpi/processor/CPU0/throttling shows the maximum
20 frequency is active as per normal.
22 Other kernel options I changed are:
23 - support for software suspend added (could this be it? I definitely saw
24 the message that no valid suspend was found in my swapfile,
25 and /proc/swaps shows that I have swap enabled as per usual)
26 - removed unnecessary SCSI drivers (I don't have anything SCSI)
27 - removed SATA support (I definitely don't have SATA)
29 Info:
30 Dell Ispiron 9100, 3 GHz HT Pentium 4
31 2.6.12 and 2.6.13: SMP support for 2 processors included
33 I've seen 1 post online about the same thing - slow running 2.6.13, so
34 surely there must be some people in the world running it ok! Any help
35 on this would be appreciated.
37 TIA,
39 --
40 Iain Buchanan <iaindb@××××××××××××.au>
42 --
43 gentoo-user@g.o mailing list


Subject Author
Re: [gentoo-user] 2.6.13 is 10x slower than 2.6.12! Mark Knecht <markknecht@×××××.com>
Re: [gentoo-user] 2.6.13 is 10x slower than 2.6.12! Martins <mar@××.lv>
[gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12! Iain Buchanan <iaindb@××××××××××××.au>