Re: [PATCH] sata_nv ADMA/NCQ support for nForce4 (updated) II

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Andi Kleen <ak@xxxxxxx> writes:

> I tested it on a NF4-Professional system with 8GB RAM and a single 
> SATA disk. It first did nicely in LTP and some other tests,
> but during a bonnie++ run it eventually blocked with all
> IO hanging forever. No output either. I did a full backtrace
> and it just showed the processes waiting for a IO wakeup.

Hmm, to follow myself up: after a few more minutes the machine recovered
and i could log in again (overall the stall was at least 5+ minutes
though)

Not sure whom to blame, the IO driver might be actually innocent
and it just be one of the usual known but unfixed IO starvation problems.

-Andi
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