Re: Very slow sed...
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On Wed, Jun 20, 2007 at 10:24:01AM -0400, David Cross wrote:
> Machine 2:
> time sed -f=20
> /usr/src/gnu/usr.bin/groff/tmac/../../../../contrib/groff/tmac/strip.sed=
=20
> /usr/src/gnu/usr.bin/groff/tmac/../../../../contrib/groff/tmac/doc-common=
=20
> >/dev/null
>=20
> real 0m4.506s
> user 0m4.167s
> sys 0m0.000s
>=20
> Yes... you read that right... almost 400 _TIMES_ slower. WTF..
>=20
> Where should I be looking?
Try ktracing to see what it is doing (although sys time =3D 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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