Bugs item #1338264, was opened at 2005-10-26 02:37
Message generated for change (Comment added) made by josiahcarlson
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Category: Python Interpreter Core
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: sin (sin_avatar)
Assigned to: Nobody/Anonymous (nobody)
Summary: Memory keeping
Initial Comment:
I execute this code on python 2.4.2 (authentic copy from
console):
Python 2.4.2 (#1, Oct 26 2005, 14:45:33)
[GCC 2.95.4 20020320 [FreeBSD]] on freebsd4
Type "help", "copyright", "credits" or "license" for more
information.
>>> a = range(1,10000000)
>>> del a
before i type del - i run top and get (see console output
below):
16300 sin 2 0 162M 161M poll 0:02 35.76%
9.28% python2.4
after del (console below):
16300 sin 2 0 162M 161M poll 0:03 7.18%
6.05% python2.4
I tried gc too ... but python didn't free memory. I checked
this on windows - memory was freed, but interpreter with
0 defined variables "eat" about 75 Mb!. I think this is bug
in interpereter core.
some text from dmesg for you:
Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991,
1992, 1993, 1994
The Regents of the University of California. All rights
reserved.
FreeBSD 4.8-RELEASE #0: Thu Apr 3 10:53:38 GMT
2003
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/
GENERIC
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium III/Pentium III Xeon/Celeron (499.15-MHz
686-class CPU)
Origin = "GenuineIntel" Id = 0x673 Stepping = 3
Features=0x387f9ff<FPU,VME,DE,PSE,TSC,MSR,
PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,
PSE36,PN,MMX,FXSR,SSE>
real memory = 268369920 (262080K bytes)
avail memory = 255901696 (249904K bytes)
----------------------------------------------------------------------
Comment By: Josiah Carlson (josiahcarlson)
Date: 2005-10-27 12:29
Message:
Logged In: YES
user_id=341410
>From what I understand, whether or not the Python runtime
"frees" memory (which can be freed) is generally dependant
on platform malloc() and free().
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1338264&group_id=5470
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