From: John Bito <jwbito@gmail.com>
Date: Tue, 16 Jun 2009 17:39:39 GMT
Subject: Re: git diff looping?
Message-ID: <3ae83b000906161039s1cd540a9k3506a09a5e616c67@mail.gmail.com>
In-Reply-To: <RFQLUdKWnVWgwwX0qsqUhC-pl9v39aFOKMpTbbABiCEXczTo26fVow@cipher.nrlssc.navy.mil>

I believe the issue is that Solaris implements 'extended' regular
expressions only in regcomp/regexec.  The implementation of
regcmp/regex seems to be from SysV and supports only 'basic' regular
expressions.

On Tue, Jun 16, 2009 at 10:35 AM, Brandon Casey<casey@nrlssc.navy.mil> wrote:
> Jeff King wrote:
>> On Tue, Jun 16, 2009 at 09:51:24AM -0700, Junio C Hamano wrote:
>>
>>>> I can reproduce the problem on Solaris 8 using git v1.6.3. It seems to
>>>> be caused by a horribly slow system regex implementation; it really
>>>> chokes on the regex we use to find the "funcname" line for java files.
>>> Hmm.  Is running under LC_ALL=C LANG=C _with_ the slow system regex help?
>>
>> No, it remains extremely slow (it is possible that it _is_ faster,
>> though, but I never managed to run either case to completion; they are
>> both clearly orders of magnitude off of acceptable).
>
> I haven't tried setting LC_ALL, LANG, but this Solaris regex is MANY orders
> of magnitude slower.  I've been running your example diff on the egit
> repository for 2 hours and it still hasn't finished.  The compat/regex
> version finished in 3 seconds.  Solaris 10 x86.
>
> -brandon
>