Re: git diff looping?

[Brandon Casey <casey@nrlssc.navy.mil>]

Brandon Casey 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.

Ok, I don't think this call is going to finish.  'git diff v0.4.0' on
Solaris 10 x86 using the native regex library.  It has been running now
for over 4.5 hours.

If you're interested in a data point from another non-gnu regex library,
I ran the same test on a mips IRIX6.5.  It took 19.5 secs, and this is
not a young machine.  It takes 4 secs when diff.java.xfuncname is set
to 'foo'.

-brandon