Re: 32bit vs 64bit (was: Just like Christmas)

In theory, 32 to 64 bits means a loss of performance due to a lesser number of entries in the Translation Lookaside Buffer (I have seen several times mentionning a loss of 5-10%, but I never ran into actual tests). This of course can be compensated by the larger memory you can address.

Christian

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Tuesday, March 20, 2001 7:15 PM

> Interesting. We've got a 4-way K570 w/3GB mem that we'll be moving from
> HPUX 10.20 to HPUX 11.0 this weekend (8 hours of watching tape spin),
which
> means I can FINALLY get us to 8i! YAY!
>
> So, why or why not should one go to 64bit? Here's my perception:
>
> Pros
> ---------------
> Should be faster (moving 2x as many bits around)
>
> Cons
> ---------------
> Requires major downtime to go from 32 to 64.
> Patches don't seem to come as quickly as 32bit versions on HP.
>
> Unknowns (for me)
> -----------------
> How much faster, if at all, and in what areas (mem, I/O, disk)?
> Possible client problems? Our clients are all 8.0.5 for now.
> Any difference/disadvantage if 3rd party OCI programs are
> not recompiled?
>
> TIA,
> Rich Jesse System/Database Administrator
> Rich.Jesse_at_qtiworld.com Quad/Tech International, Sussex, WI
USA
>
> > -----Original Message-----
> > From: dgoulet_at_vicr.com [mailto:dgoulet_at_vicr.com]
> > Sent: Tuesday, March 20, 2001 11:06
> > To: Multiple recipients of list ORACLE-L
> > Subject: Re:Just like Christmas
> >
> >
> > Kimberly,
> >
> > Enjoy the N class boxes, especially in 64 bit mode. They
> > really cook
> > compared to a K.
>
>
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-- 
Author: Christian Bilien
  INET: christian_at_open-seas.com

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