Package: grep
Version: 2.5.3~dfsg-1
Severity: important

Hi,

After upgrading grep to 2.5.3~dfsg-1:

$ time grep '^foo b' bar >/dev/null

real    0m34.745s
user    0m34.522s
sys     0m0.032s

While in a 32-bit chroot on the same machine, same package version, same
input file:

$ time grep '^foo b' bar >/dev/null

real    0m0.123s
user    0m0.120s
sys     0m0.000s

Both cases are cache-hot representative values of multiple measurements.
The file searched is a ~30 MiB textfile. Up until yesterday the 64-bit
version was a little faster... IMHO this nearly 300x slowdown makes 'grep'
practically unusable for any serious work on AMD64.

Gabor

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'stable'), (101, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.22.1
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grep depends on:
ii  libc6                         2.6.1-1    GNU C Library: Shared libraries

grep recommends no packages.

-- no debconf information


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