Re: Segfault manifesting in libm from cost_sort

ECC memory, RAID 10 w/ adaptec 3405 hardware controller. Period between
crashes ranged from about 1min-5mins. Just switched to a new box so the
problem is "gone". In the original email I meant ubuntu 6.06.

On Wed, Jul 30, 2008 at 12:06 AM, John R Pierce <pierce@hogranch.com> wrote:

> Andrew Badr wrote:
>
>> Our pg keeps going into recovery mode after segfaulting. This is a
>> compiled 8.3.3 on Ubuntu 6.04 with Slony.
>>
>> Some ideas from IRC:
>> RhodiumToad: 1) probably least likely, something corrupt in the math libs;
>> the fact that it's not reproducible makes this improbable
>> RhodiumToad: 2) more likely: a register or memory stomp in a signal
>> handler, which could be the result of an OS bug or a pg miscompile
>> RhodiumToad: 3) slightly less likely: a memory stomp somewhere else in pg
>> that happens to be clobbering something in the math library
>>
>
> does this server have ECC memory?   if not
>
> Pierce:  4) flakey memory
>
>
> does this server have an 'enterprise' grade disk system (eg, SAS, SCSI,
> Fiberchannel, with a decent qualilty RAID controller)?    if its a desktop
> ATA/SATA disk...
>
> Pierce: 5) flakey disk drive or channel
>
>
>