fc5 instability

Marcuccio · #1 11th December 2006, 01:47 PM

Hi,
i have an fc5 box which suddenly, after it has been working for several days without problem, becomes very slow. Login need a couple of minute to complete, every command is very very slow,also top and vmstat require a lot of time to execute. The cpu is idle, disks are idle and I have not any strange logs in /var/log/messages.
A reboot (which takes a lot to complete) solves the problem, but after 4 or 5 days the problem come up again.

What can I do ? Really I do not know where to start!

Thanks a lot!

Marcuccio

JN4OldSchool · #2 11th December 2006, 01:58 PM

bad RAM? I think that is the first place I'd look, then maybe a HD going south on you.

Marcuccio · #3 11th December 2006, 02:05 PM

I'm going to start a memtest session, but I don't think ram can be the cause. I've used it intensively...However i will let you know the result! Thanks a lot for your suggestions.

Marcuccio · #4 12th December 2006, 12:11 PM

Ok I have tested the ram with memtest86 for more than 10 hours without any error. I have also checked the hard disks with a specific utility from the disk vendor...disks are ok too.
I'm going to do some updates, but really I don't Know where to look...

Thank you

Marcuccio

Marcuccio · #5 2nd January 2007, 09:14 AM

Hi,
after verifying the hardware and applying all possible patch I have disabled the acpi support in the kernel (using the "acpi=off" parameter) and the problem seems disappeared; the box is up and running since 3 days ago.

However I'm unable to understand why this solved the problem!!! In the bios I had disabled all the pwer management related feature but this did not solve the problem.

When the problem was still there the pc was not completely hibernate, it was accessible, but very very slow, especially when accessing to disks...but disk were not sleeping!!! How is possible ?

Bye bye