Re: Very slow sed...

On Wed, Jun 20, 2007 at 10:24:01AM -0400, David Cross wrote:

Machine 2:
time sed -f
/usr/src/gnu/usr.bin/groff/tmac/../../../../contrib/groff/tmac/strip.sed
/usr/src/gnu/usr.bin/groff/tmac/../../../../contrib/groff/tmac/doc-common
/dev/null

real 0m4.506s
user 0m4.167s
sys 0m0.000s

Yes... you read that right... almost 400 _TIMES_ slower. WTF..

Where should I be looking?

Try ktracing to see what it is doing (although sys time = 0 says it's
all in userland). So maybe gprof or pmc. Also double check the
kernel configs are identical and malloc debugging is disabled.

Kris

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