Messages in this thread |  | | Date | Sun, 19 Aug 2001 18:51:20 +0300 | From | "Serguei I. Ivantsov" <> | Subject | Re[2]: 2.4.x & Celeron = very slow system |
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Hello Dave,
Sunday, August 19, 2001, 4:22:40 PM, you wrote:
DJ> On Sun, 19 Aug 2001, Serguei I. Ivantsov wrote:
>> With 2.4.x kernel my system (Celeron (Coppermine) 850Mhz (100x8.5) >> 256Mb i810) behaves like slow i386sx. >> >> For example, when I extract 25MB gzip file on 2.2.19 kernel - it >> takes about 12 seconds, but with 2.4.8(9) - 6(!) MINUTES on the SAME >> system... >> >> The only idea is that 2.4.x kernel turns off cache (L1 & L2) on >> processor (on my cpu). How can I check it? Any ideas?
DJ> No, we don't do any such frobbing of the cache control registers. DJ> It is enabled in the BIOS right ? It is enabled in BIOS. DJ> Another thing that it might be, is if you're using ACPI instead of DJ> APM, the cpu-idle may be causing the CPU to run slower than usual DJ> though throttling. I'd disabled APM support at all when configuring kernel. DJ> Although, I've not seen this happen to the extent of what you're DJ> reporting. If you are running with an ACPI kernel, try booting DJ> with an APM kernel instead to see if it makes a difference. Maybe there is some software to test which subsystem fails (cpu,vm,etc)? Is it possible that software from RH7.0 distribution can't work correctly with new kernel?
-- Best regards, Serguei mailto:administrator@svitonline.com
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