Re: [gentoo-user] Re: System freezes during compiles

[Carlos Hendson]

On Wed, 2013-03-20 at 16:14 +0000, Grant Edwards wrote:
> On 2013-03-20, Carlos Hendson <skyclan@×××.net> wrote:
>
> > That's by no means conclusive, however, I've also run a complete pass of
> > memcheck for over an hour without any issues reported.
>
> FWIW.  I've had flakey memory that ran memcheck fine for several hours
> and multiple passes -- but if I let it run long enough, it would fail.
> I wouldn't be confident unless memtest ran for at least 12 hours (24
> would be even better).
>
> I'd also keep an eye on CPU core temperature.
>
> A failing hard-drive can also cause some pretty strange behavior.  If
> you're drives are smart (AFAICT, all recent ones are), ask them how
> they're feeling with 'smartclt' or something like that.
>

I'll run a 24 hour memtest this weekend.

I started a long test on the hard drive:

 smartctl -t long /dev/sda

smartctl -a /dev/sda also appears to indicate various errors (the output
is attached).  I'll trying to track down some documentation as to what
they're actually reporting.

Looking at the difference between the output of smartctl for before and
during the test, there has been an increase in errors detected for ID
#195

Before test:
195 Hardware_ECC_Recovered  0x001a   001   001   000    Old_age   Always
-       241822

During test:
195 Hardware_ECC_Recovered  0x001a   001   001   000    Old_age   Always
-       243582

Could this be the cause of the stalls during compiles?  If it is the
cause, is it possible for the kernel to detect such failures and report
them?

Thanks to you and everyone else for your ideas and suggestions.

Regards,
Carlos