I have some information now. First, I apologize for taking so long- I
had the misfortune of getting sick during this analysis.
So comparing builds from 1/18 and 2/2 I can see approximately a 15%
slowdown in Frame Creation time, going from 0.086 sec. to 0.102 sec.
Also, Style Resolution slowed from approximately 0.223 sec. to 0.248
sec, or about 9%.
Total layout time went from .559 sec to 0.592, or about a 6% slowdown.
This does not seem to account for the total slowdown we are seeing -
clearly there is something else going on. In fact, the general noise
factor in the Gecko Performance Tests are about 5%, so the change I am
seeing could be noise, although I believe that there is a slight
performance degradation worth looking into in frame creation and
probably style resolution.
These results are all from Viewer. It could be that the problem is
actually in Mozilla itself, and Pierre has produced some interesting
data on the impact of skins on performance[1].
- marc
1. news://news.mozilla.org/3A814068.A8E21741%40netscape.com
Chris Waterson wrote:
> We have still made zero progress on this:. A week has gone by, and page
> load is still down by 13%. Here are the people that are on the hook
> during the time that the slowdown occurred. If I made a quick look
> through the deltas
>
>
> http://bonsai.mozilla.org/showcheckins.cgi?&treeid=SeaMonkey&batchid=453
>
> If had to guess, I'd say that darin and ftang should be reviewing their
> changes...
>
> chris
>
> Chris Hofmann wrote:
>
>> ----------------------------------------------------------------------
>> The following people are on "the hook", since they have made checkins
>> to the tree since it last opened:
>>
>> Who What
>> Peter.VanderBeken%pandora.be2 changes
>> av%netscape.com 1 change
>> axel%pike.org 7 changes
>> beard%netscape.com 1 change (1 while tree closed!)
>> ben%netscape.com 1 change
>> bienvenu%netscape.com 2 changes
>> blakeross%telocity.com 10 changes
>> brade%netscape.com 1 change
>> ccarlen%netscape.com 14 changes
>> cls%seawood.org 1 change
>> darin%netscape.com 34 changes (2 while tree closed!)
>> dbaron%fas.harvard.edu 5 changes (4 while tree closed!)
>> dmose%mozilla.org 1 change
>> dr%netscape.com 1 change
>> jj%netscape.com 1 change (1 while tree closed!)
>> kin%netscape.com 19 changes
>> mcafee%netscape.com 8 changes (8 while tree closed!)
>> mkaply%us.ibm.com 4 changes (2 while tree closed!)
>> mscott%netscape.com 2 changes
>> neeti%netscape.com 1 change
>> nhotta%netscape.com 1 change (1 while tree closed!)
>> racham%netscape.com 15 changes
>> radha%netscape.com 1 change
>> sspitzer%netscape.com 1 change
>> timeless%mac.com 2 changes
>> yokoyama%netscape.com 1 change
>> 137 checkins.
>
Performance History and Trending Table
Wednesday 2/7/2001 17:40:08
|
Pull-ID
|
Build-ID
|
Parsing
|
Content Creation
|
Frame Creation
|
Style Resolution
|
Reflow
|
Total Layout
|
Total Time
|
|
|
|
|
|
|
|
| Jan18-a |
|
98.37 % |
95.60 % |
85.04 % |
89.11 % |
89.68 % |
93.87 % |
95.78 % |
| Jan18-b |
|
89.51 % |
100.00 % |
81.17 % |
90.08 % |
100.00 % |
93.29 % |
95.91 % |
| Feb02-a |
|
100.00 % |
94.38 % |
95.25 % |
100.00 % |
84.92 % |
100.00 % |
100.00 % |
| Feb02-b |
|
93.94 % |
97.31 % |
100.00 % |
94.78 % |
89.68 % |
98.28 % |
98.03 % |
