[Bug libc/11607] New: strstr function very slow.

["xoswald at debian dot org" <sourceware-bugzilla at sourceware dot org>]

I think tere are a huge regression for the strstr function between version 2.7
and 2.10.

In our code we use the 'strstr' function a lot and became to the fact that
strstr is having a strange behaviour.

I attach 2 file so you can test it.
$gcc test-strstr.c -o test
$time test 10000

Some results (User Time):
=================
Ubuntu 8.04 : 10s (glibc 2.7)
Ubuntu 9.04 : 1m20s (glibc 2.10)
Ubuntu 10.04 : 1m20s (glibc 2.10)
Debian lenny : 8s (glibc 2.7)
Debian Squeeze : 1m10s (glibc 2.10)

The results are the same on AMD64 and i386 architectures.

-- 
           Summary: strstr function very slow.
           Product: glibc
           Version: 2.10
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: xoswald at debian dot org
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11607

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