Re: [BUG?] RAID sub system / tux

[Roy Sigurd Karlsbakk]

> > After testing this for a while, I'm quite sure there's some kind of bug
> > that locks up I/O under heavy traffic.
>
> there's definitely no problem with heavy load on one stream,
> or with multistream load and default readahead settings.
> (I certianly have tested the former, and the latter is tested
> by all the dbench scores you see here).  I'm guessing you'd
> see no lockup if you removed the readahead.  though it's also worth
> asking: have you memtest86's the cpu/ram?  and can you cause the
> lock with single-threaded bonnie?  also, do you have highmem on?

I have highmem turned off.

By using default readahead (124), starting the 50 streams, killing them,
and restarting them, I reproduced the problem. I rebooted the server
before this.

I haven't memtest86'd the hardware, but I will. I still beleive this is an
OS problem - not hardware

--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA

Computers are like air conditioners.
They stop working when you open Windows.