system speed

Hi,

I am new to this list. I have a question would be
greatful if anyone answers it.

I have observed that my linux PC (Celeron-633Mhz) runs significantly slow after I have installed Mandrake-9.2 which has kernel (2.4.22). My earlier kernel was 2.2.22 (mandrake 7.2). The speed seems to be slow right from the bootup sequence.

I have also observed that if I do an abnormal shutdown of the system (by pressing the reset button of the computer) the system speeds up significantly somewhat comparable to my old kernel speed. Right from the bootup sequence every thing runs fast.

I have also observed that the CPU utilization is very high for case when the I try a normal shutdown followed by a bootup. I could not see any single process that would be hogging the CPU. It seems like any process that gets the CPU likes to hog the CPU.

Any idea what is it that is causing the system to run faster when we have an abnormal shutdown of the system?

Thanks,
Biplab

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After you hit the reset button, the BIOS will perform a cold-boot which means everything gets initialized from scratch. Aside from the file-system rebuild that occurs when you improperly shut-down a system, there should be no additional history and, therefore, no difference in performance before and after your shutdown sequence.

If you execute top you should clearly see what process, if any, is hogging the CPU.

Cheers,
Dick Johnson
Penguin : Linux version 2.4.22 on an i686 machine (797.90 BogoMips).
Note 96.31% of all statistics are fiction.