Re: [parisc-linux] Machine hanging during high-traffic NFS

[Grant Grundler <grundler@parisc-linux.org>]

On Thu, Jul 21, 2005 at 06:29:46PM -0600, Kurt Fitzner wrote:
> John David Anglin wrote:
> 
> > I know that 32-bit 2.6.10 isn't stable on my c3k.  There is a known
> > bug with kernel memcpy and fpregs.
> 
> Well, as far as the bug I am reporting goes, so far I have narrowed it
> down to a kernel later than 2.6.10-pa11 and before 2.6.11-pa4.  It
> appears that whatever went into 2.6.10 isn't to blame.

Ok...If you were to try one more kernel, could it be 2.6.11-pa1?

> It looks like the interrupt storm theory is best.  The functions I get
> from the TOC data this time are:
> 
> GRO2 0x101060e0 handle_interruption+6c
> IOAQ 0x101120dc handle_unaligned+2c0

yes, seems like it's likely too.

> I am curious, though.  This time when it hung the hearbeat didn't stop.
>  Does this mean that it didn't hang as solid as the other times?

that would be my guess too.

> Are
> interrupts still being handled at some kernel level if the heartbeat LED
> is flashing normally?

yes

> If this is the case, then this means the TOC data
> may be useless this time around, right?

Not necessarily. The TOC data may still be useful
for register state.

grant
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