Bug #48781 [Com]: Cyclical garbage collector memory leak

Edit report at http://bugs.php.net/bug.php?id=48781&edit=1 ID: 48781 Comment by: jas at rephunter dot net Reported by: nate at frickenate dot com Summary: Cyclical garbage collector memory leak Status: Closed Type: Bug Package: Scripting Engine problem Operating System: Debian 5.0 kernel 2.6.24-23-xen PHP Version: 5.3.0 Assigned To: dmitry Block user comment: N Private report: N New Comment: I believe this bug has regressed. We only recently upgraded from 5.3.2 to 5.3.5. And now several scripts are broken that have been working for years. By adding the unset of the variable at the end of the loop as shown in the first snippet below, the problem is fixed. So I believe that the symptom has regressed, although not necessarily the cause. Previous Comments: ------------------------------------------------------------------------ [2010-04-20 14:55:01] dmitry@php.net Note that your test and expectation are not completely correct because the actual garbage collection occurs at undefined moments of time. As result the memory usage on different iteration will be different. To avoid this ambiguity add explicit call to gc_collect_cycles() before printing memory usage. ------------------------------------------------------------------------ [2010-04-20 14:50:54] dmitry@php.net This bug has been fixed in SVN. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. ------------------------------------------------------------------------ [2010-04-20 14:30:38] dmitry@php.net Automatic comment from SVN on behalf of dmitry Revision: http://svn.php.net/viewvc/?view=revision&revision=298213 Log: Fixed bug #48781 (Cyclical garbage collector memory leak) ------------------------------------------------------------------------ [2010-04-19 12:37:21] rquadling@php.net That should have said ... "So, it is _NOT_ completely losing the items, just not cleaning them during the cycle. At shutdown, they are cleaned." ------------------------------------------------------------------------ [2010-04-19 12:31:56] rquadling@php.net If the loop is limited to 11111 items, using my code to report the construct/use/destruct, the log ends with ... 11108:#3 11109:#3 11110:#3 11111:#3 04999:#3 09999:#3 10000:#3 So, it is completely losing the items, just not cleaning them during the cycle. At shutdown, they are cleaned. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=48781 -- Edit this bug report at http://bugs.php.net/bug.php?id=48781&edit=1