| From: | Magnus Hagander <magnus(at)hagander(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Martin Pihlak <martin(dot)pihlak(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: reducing statistics write overhead |
| Date: | 2008-09-08 13:05:06 |
| Message-ID: | 48C52302.5020101@hagander.net |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Magnus Hagander <magnus(at)hagander(dot)net> writes:
>> Tom Lane wrote:
>>> I'd also be worried about issues like clock skew between the
>>> postmaster's time and the filesystem's time.
>
>> Can that even happen on a local filesystem? I guess you could put the
>> file on NFS though, but that seems to be.. eh. sub-optimal.. in more
>> than one way..
>
> Lots of people use NAS/SAN type setups.
For NAS it could happen, but certainly not for SAN, no? SANs have all
the filesystem processing in the kernel of the server...
I still agree that it's not a good thing to rely on, though :-)
//Magnus
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