Re: [SOLVED] Re: should 'make -j8 build' work?

2012-02-08 Thread Kevin Chadwick
On Wed, 8 Feb 2012 11:27:14 -0500
"Joe Gidi" wrote:

> I actually resolved this by pulling and reseating all the DIMMs.
> 
> Oddly enough, prior to that, the box went through 3 complete runs of
> memtest86+ without error, but continued to hang at random spots during
> 'make -j8 build'.
> 

By complete runs, do you mean 3 passes. I've read you need atleast 8
passes to be sure and I believe from observation but could be wrong
that each pass tests different things as do the tests. I've only ever
waited for 8 passes, once or twice however (just after I'd read about
it), it took ages.

> I pulled and reseated all the memory and then did 5 'make -j8 build' runs
> successfully, no more hangs.
> 
> Very strange, but this is why I like to stress-test new builds...

Kc



Re: [SOLVED] Re: should 'make -j8 build' work?

2012-02-08 Thread Kevin Chadwick
On Wed, 8 Feb 2012 18:52:15 +0100
Norman Golisz wrote:

> actually, it's the most reliable way to detect faulty hardware. Memory
> testers, if at all, only find specific issues (mostly by writing and
> reading bit patterns to RAM). They can't stimulate and stress the
> hardware as a build process (e.g. of an operating system) does.
> 
> Memtest and such only have limited use.

Building certainly throws extra heat into the equation.

-- 
Kc



Re: [SOLVED] Re: should 'make -j8 build' work?

2012-02-08 Thread Norman Golisz
Hi Joe,

On Wed Feb  8 2012 11:27, Joe Gidi wrote:
> On Wed, February 8, 2012 3:25 am, Stuart Henderson wrote:
> > On 2012-02-07, Joe Gidi  wrote:
> >> In every case, when the box hangs, I'm unable to break into ddb.
> >
> > How long do you leave it when it hangs? There have been occasions
> > where a box appears to hang but then recovers.
> >
> > Are you using softdep?
> 
> I actually resolved this by pulling and reseating all the DIMMs.
> 
> Oddly enough, prior to that, the box went through 3 complete runs of
> memtest86+ without error, but continued to hang at random spots during
> 'make -j8 build'.
> 
> I pulled and reseated all the memory and then did 5 'make -j8 build' runs
> successfully, no more hangs.
> 
> Very strange, but this is why I like to stress-test new builds...

actually, it's the most reliable way to detect faulty hardware. Memory
testers, if at all, only find specific issues (mostly by writing and
reading bit patterns to RAM). They can't stimulate and stress the
hardware as a build process (e.g. of an operating system) does.

Memtest and such only have limited use.

Yours,
Norman



[SOLVED] Re: should 'make -j8 build' work?

2012-02-08 Thread Joe Gidi
On Wed, February 8, 2012 3:25 am, Stuart Henderson wrote:
> On 2012-02-07, Joe Gidi  wrote:
>> In every case, when the box hangs, I'm unable to break into ddb.
>
> How long do you leave it when it hangs? There have been occasions
> where a box appears to hang but then recovers.
>
> Are you using softdep?

I actually resolved this by pulling and reseating all the DIMMs.

Oddly enough, prior to that, the box went through 3 complete runs of
memtest86+ without error, but continued to hang at random spots during
'make -j8 build'.

I pulled and reseated all the memory and then did 5 'make -j8 build' runs
successfully, no more hangs.

Very strange, but this is why I like to stress-test new builds...

--
Joe Gidi
j...@entropicblur.com

"You cannot buy skill." -- Ross Seyfried