Date: Sat, 18 Oct 2003 21:38:53 -0500 (CDT) From: Steve Atwell <satwell@uiuc.edu> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ports/58234: Slow memory allocation in python on 5.1-CURRENT Message-ID: <200310190238.h9J2crAE019518@stripped.disjoint.net> Resent-Message-ID: <200310190240.h9J2eF4R052633@freefall.freebsd.org>
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>Number: 58234 >Category: ports >Synopsis: Slow memory allocation in python on 5.1-CURRENT >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Oct 18 19:40:15 PDT 2003 >Closed-Date: >Last-Modified: >Originator: Steve Atwell <atwell@uiuc.edu> >Release: FreeBSD 5.1-CURRENT i386 >Organization: >Environment: System: FreeBSD xxxxxxx 5.1-CURRENT FreeBSD 5.1-CURRENT #1: Sat Oct 18 19:40:17 CDT 2003 root@xxxxxxx:/usr/obj/usr/src/sys/STRIPPED i386 Celeron 800MHz 512 MB RAM, 512 MB swap 5.1-CURRENT from Oct 18 2003 >Description: Memory allocation in python on 5.1-CURRENT is very, very slow. Performing a list append lots of times takes a long time. strace shows that python is making lots and lots of break() calls while this is happening. Problem does not occur on 5.1-RELEASE or older and does not occur on Linux, MacOS X, or Solaris. Occurs with both python-2.3.2 and python-2.2.3_3. >How-To-Repeat: Execute the following python code: a = [] for x in range(100000): a.append(x) >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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