Classic running out of memory... huh? what? <long>

[bruce.labitt at autoliv.com]

> 

> On Thu, Jun 11, 2009 at 11:54 AM, <bruce.labitt at autoliv.com> wrote:
> 
> Any good memory tracking tools?  I have used valgrind but not gained 
much
> insight.  Must be operator error...
> 
> I was reading a discussion on Slashdot recently.  Most posts said 
> Purify ($$$) was the best option out there.  Lots of OSS options, 
> including valgrind, were mentioned.
>  
> 
> I notice that there is no swap listed.  Umm, how does one add swap to a
> nfs based system?
> 
> NFS swap of course ;-)  

Have any good references on NFS swap?

> I'm thinking this is a PS3?  Can you add firewire or usb storage?  usb
> 2.0 might be slower then ethernet.  NFS would probably be the same 
> speed as iSCSI with much less effort.

Not a PS3.  Same processor as PS3, except QS22 has faster double-precision 
and two processors!

> 
> The general rule of thumb is your OS shouldn't be using swap.  Swap (&
> exssive paging) is a sign of crisis and the kernel is trying to 
> recover.  Sometimes it's faster to reboot then wait for the kernel to 
recover.
> 

I know swap is evil.  But better than aborting a run...

> Of course this assumes RAM is inexpensive enough, you can add more RAM
> to the motherboard, your apps don't consume all available RAM.  Swap 
> provides a safety net.
> 
> You're probably maxed on RAM already. 
Indeed.  Used all 32GB.  Maximum allowed on MB = 32GB... :(


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