Re: Performance Regression needs love-> was Re: Load-time test results (01/26/2001)

Wed, 07 Feb 2001 19:07:46 -0800

Just out of curiosity, has it been ascertained that Pierre's new fix for 43457 has little noticeable performance impact?
 
(Also, I think it's time to cut down the cc list here...)
 
--Blake
----- Original Message -----
Sent: Wednesday, February 07, 2001 9:09 PM
Subject: Re: Performance Regression needs love-> was Re: Load-time test results (01/26/2001)


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
Sec %
Sec %
Sec %
Sec %
Sec %
Sec %
Sec
Jan18-a
0.114 19.294
 
98.37 %
0.106 19.353
 
95.60 %
0.088 16.223
 
85.04 %
0.222 40.174
 
89.11 %
0.031 4.956
 
89.68 %
0.560 48.221
 
93.87 %
1.160
 
95.78 %
Jan18-b
0.104 18.377
 
89.51 %
0.111 19.854
 
100.00 %
0.084 15.204
 
81.17 %
0.224 40.784
 
90.08 %
0.034 5.781
 
100.00 %
0.557 48.071
 
93.29 %
1.162
 
95.91 %
Feb02-a
0.116 18.733
 
100.00 %
0.104 18.249
 
94.38 %
0.099 17.485
 
95.25 %
0.249 41.079
 
100.00 %
0.029 4.454
 
84.92 %
0.597 49.414
 
100.00 %
1.211
 
100.00 %
Feb02-b
0.109 18.295
 
93.94 %
0.108 18.702
 
97.31 %
0.104 18.017
 
100.00 %
0.236 40.202
 
94.78 %
0.031 4.784
 
89.68 %
0.586 49.690
 
98.28 %
1.188
 
98.03 %

Reply via email to