Performance 32- vs 64-bit kernel

From: Vandevegt, James Matthew (Jim) (vandevegt@avaya.com)
Date: Tue Oct 01 2002 - 16:46:59 EDT

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Is there a definitive advantage or disadvantage to running the 64-bit kernel
versus the 32-bit kernel on UltraSPARC I and II chips?

Noticeable performance difference, particularly running 32-bit applications on
the 64-bit kernel?

I ran across an application's web site that reported a 30% reduction in speed
when running on the 64-bit kernel and was wondering if this was commonplace.

Thanks, and I'll summarize.

--Jim
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