Re: Sun vs. Mac - Mailing list pgsql-performance

From CaptainX0r
Subject Re: Sun vs. Mac
Date
Msg-id 20030114165433.63951.qmail@web21110.mail.yahoo.com
Whole thread Raw
In response to Re: Sun vs. Mac  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-performance
All,

> Let me get this straight: the Sun is slower even with fsync
> off?  That

Correct.  This really helped a lot, especially with the dump
load, but I've clearly got some more work ahead of me.

> Andrew Sullivan's nearby recommendation to replace qsort() is
> a good
> one, but PG 7.3 is already configured to do that by default.
> (Look in
> src/Makefile.global to confirm that qsort.o is mentioned in
> LIBOBJS.)

Thanks for confirming.  I've got LIBOBJS =  isinf.o qsort.o

> I'd suggest starting with some elementary measurements, for
> example looking at I/O rates and CPU idle percentage while
> running the same task on both Solaris and G3.  That would at
> least give us a clue whether I/O or CPU is the bottleneck.

Good thoughts - I'm working on it right now, though I'm not
really sure how to check I/O rates....

Thanks much for the input,

-X


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