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From Pollähne. Ullrich <U.Pollae...@seeburger.de>
Subject Re: Performance difference between 1.6.1 and 1.6.4 (in eclipse)
Date Tue, 26 Jul 2005 09:26:05 GMT
Hi,

I did not follow the list thoroughly. Are there any news on the subject?

Ullrich.

> -----Original Message-----
> From: Kev Jackson [mailto:kevin.jackson@it.fts-vn.com]
> Sent: Tuesday, June 28, 2005 5:18 AM
> To: Ant Developers List
> Cc: 'Ant Users List'
> Subject: [[**SPAM**]] - Re: Performance difference between 1.6.1 and
> 1.6.4 (in eclipse) - Bayesian Filter detected spam
> 
> 
> Dominique Devienne wrote:
> 
> >Ullrich was kind enough to provide me data gathered by
> >my own performance listener, which shows timings for
> >tasks as well as targets:
> >
> >Timing by tasks in Ant 1.6.2:        in Ant 1.6.5
> >----------- ------ ------ ---------- ----------- ------
> >19.578,0 ms 175,2%    24x antcall    62.235,0 ms 189,0%
> > 5.638,0 ms  50,5%   434x see.get     6.308,0 ms  19,2%
> > 1.957,0 ms  17,5%    25x import     14.238,0 ms  43,2%
> > 1.269,0 ms  11,4% 15131x property   11.775,0 ms  35,8%
> >   563,0 ms   5,0%    43x delete        608,0 ms   1,8%
> >    93,0 ms   0,8%   101x dirname       221,0 ms   0,7%
> >    47,0 ms   0,4%     1x tstamp         47,0 ms   0,1%
> >    30,0 ms   0,3%    25x presetdef      16,0 ms   0,0%
> >    15,0 ms   0,1%   430x basename      453,0 ms   1,4%
> >     0,0 ms   0,0%    78x mkdir          64,0 ms   0,2%
> >
> >11.172,0 ms 100,0%     1x TOTAL      32.922,0 ms 100,0%
> >
> >So this data seems to indicate a significant slow down of
> ><import> and <property> more than <antcall>. The combined
> >slow down of these 2 tasks amounts to 23.2 seconds which
> >is pretty much the whole slow down. <antcall>'s own perf
> >data is masked by that of the nested tasks, but most
> >likely peanuts.
> >
> >Does anybody have any clue to why these two tasks got so
> >much slower in between patch releases? The slow down of
> ><import> is more dramatic than <property>, since for
> >25 calls 'only'.
> >
> >15K <property> calls might be unusual a bit, but still.
> >
> >  
> >
> Checking importTask revisions shows nothing that should cause 
> a massive 
> slowdown.
> Could it have something to do with no longer caching the 
> introspectionhelper in IntrospectionHelper getHelper?

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