| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | josh(at)agliodbs(dot)com |
| Cc: | eric soroos <eric-psql(at)soroos(dot)net>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: questions about disk configurations |
| Date: | 2002-12-10 00:08:03 |
| Message-ID: | 20995.1039478883@sss.pgh.pa.us |
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| Lists: | pgsql-performance |
Josh Berkus <josh(at)agliodbs(dot)com> writes:
>> I'm going to try this under linux using mount points, but I need to shuffle
> hardware first.
> This is the only way I've done it. I'm not sure what the Mac problem is.
It sounds like OS X fails to optimize repeated lookups of the same
symlink. I haven't tried to do any performance measurement of this
myself, but if true a gripe to Apple would be in order. Most of the
designs I've seen for clean tablespace handling will depend on symlinks
much more than we do today, so a performance penalty for symlinks will
*really* hurt further down the road.
regards, tom lane
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