Re: garbage collector and slowdown (guillaume weymeskirch)

Collapse
This topic is closed.
X
X
 
  • Time
  • Show
Clear All
new posts
  • skip@pobox.com

    Re: garbage collector and slowdown (guillaume weymeskirch)


    guillaumeBut I've noticed a near linear slowdown of the execution :
    guillaumeafter a few minutes - and several millions of allocated and
    guillaumefreed objects, each iteration take more and more time to
    guillaumeexecut e.

    I ran your script on my Mac and let it go for over an hour. The times
    printed near the end were not that different than the times near the start.

    First few prints:

    4.80848908424
    4.17986106873
    4.07436394691
    4.57266497612
    4.26531600952
    4.1674759388
    4.00401592255
    4.56974005699
    4.33465600014
    4.17652106285
    4.02282094955
    4.6344628334

    Last few prints:

    4.0330889225
    3.89743900299
    4.39918708801
    4.16099500656
    4.06551003456
    3.91927599907
    4.42701005936
    4.17856502533
    4.07650518417
    3.93242192268
    4.44240498543
    4.32765197754

    Final summary:

    {'ClassicBig': 29580000, 'ClassicSmall': 29580000, 'Tree': 29580000}
    max=5.617558 min=3.869602

    This was with Python 2.6. I then ran it for awhile (though not nearly as
    long - just 5-10 minutes) with Python 2.5.

    First few prints:

    4.50398087502
    3.73511385918
    3.63765382767
    4.04779291153
    3.87206196785
    3.73774003983
    3.62571001053
    4.02851200104
    3.90740704536
    3.87872505188
    3.71122288704
    4.11415696144
    3.95573282242

    Last few prints:

    5.18314695358
    5.6188788414
    5.40970396996
    5.31133294106
    5.14807605743
    5.70623922348
    5.47632288933
    5.46225881577
    5.42709779739
    5.80780506134
    5.53798508644
    5.43349313736
    5.5712749958
    5.91922187805

    Summary:

    {'ClassicBig': 5101922, 'ClassicSmall': 5101922, 'Tree': 5101922}
    max=6.006355 min=3.625710

    It seems that whatever problem you saw in 2.5 is fixed in 2.6.

    Skip
Working...