Greg Stark wrote:
William Yu <[EMAIL PROTECTED]> writes:

Biggest speedup I've found yet is the backup process (PG_DUMP --> GZIP). 100%
faster in 64-bit mode. This drastic speed might be more the result of 64-bit
GZIP though as I've seen benchmarks in the past showing encryption/compression
running 2 or 3 times faster in 64-bit mode versus 32-bit.

Isn't this a major kernel bump too? So a different scheduler, different IO
scheduler, etc?

I'm sure there's some speedup due to the kernel bump. I really didn't have the patience to even burn the FC2 32-bit CDs much less install both 32-bit & 64-bit FC2 in order to have a more accurate baseline comparison.

However, that being said -- when you see huge speed increases like 50% 100% for dump+gzip, it's doubtful the kernel/process scheduler/IO scheduler could have made that drastic of a difference. Maybe somebody else who has done a 2.4 -> 2.6 upgrade can give us a baseline to subtract from my numbers.

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