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Re: tweaking MemSet() performance

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Larry Rosenman <ler(at)lerctr(dot)org>
Cc: Alvaro Herrera <alvherre(at)atentus(dot)com>, andrew(at)libertyrms(dot)info,pgsql-hackers(at)postgresql(dot)org
Subject: Re: tweaking MemSet() performance
Date: 2002-08-30 00:09:33
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Larry Rosenman wrote:
> On Thu, 2002-08-29 at 18:53, Alvaro Herrera wrote:
> > En Thu, 29 Aug 2002 19:35:13 -0400 (EDT)
> > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> escribi?:
> > 
> > > In your results it seems to suggest that memset() gets slower for longer
> > > buffer lengths, and a for loop starts to win at longer sizes.  Should I
> > > pull out my Solaris kernel source and see what memset() is doing?
> > 
> > No, because memset() belongs to the libc AFAICS...  Do you have source
> > code for that?
> and if you do, what vintage is it?  I believe Solaris has mucked with
> stuff over the last few rev's. 

8.0.  Looks like there is interested so I will dig the CD's out of the
the box the moves moved and take a look.  Now where is that...

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
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