[perl #60692] [MMD] Recently introduced slowness

[Will Coleda via RT]

On Thu Nov 20 17:26:37 2008, bacek wrote:
> chromatic wrote:
> > On Thursday 20 November 2008 00:21:01 Andreas J. Koenig via RT wrote:
> > 
> >> According to examples/benchmarks/primes2.pir there was a nearly 30x
> >> slowdown in the last weeks. Two random data points:
> >>
> >> https://svn.perl.org/parrot/trunk@31633 was fast (~ 8 secs)
> >> https://svn.perl.org/parrot/trunk@32918 was slow (> 220 secs)
> >>
> >> Between the two I found too many segfaults and gave up on bisecting.
> >>
> >> Let me know if you need further data.
> > 
> > How about between r31633 and r31688?  Between r31670 and r31749?
> > 
> > (My guess is r31688, but if you can narrow it down further, even better.)
> 
> Yes, it was 31668.
> 
> bacek at haste:~/src/parrot$ git bisect good
> Bisecting: 0 revisions left to test after this
> [aba7ce1b95674884e5fecc138fd601e8128d232c] [pdd27mmd] Merging the 
> pdd27mmd branch into trunk for r30235 to r31667.
> 
>

Tested on feather, using --optimize
r31667 - 5.9s,6.0s,6.1s
r31668 - 2m32.838s, panic out of memory (1 run)
r41391 - .106s, .107s, .241s

So it's now running in 1/40 of the time it was then.

Closing ticket.

-- 
Will "Coke" Coleda