#37577 [Opn->Bgs]: Much Memory Usage while copy big files

ID: 37577 Updated by: iliaa@php.net Reported By: petrich at tronic-media dot com -Status: Open +Status: Bogus Bug Type: *General Issues Operating System: Linux + Windows PHP Version: 5.1.4 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php For faster copies php uses mmap() which maps the file to memory. Previous Comments: ------------------------------------------------------------------------ [2006-05-24 11:45:22] petrich at tronic-media dot com Description: ------------ Not sure if it's a "bug or a feature", but when copying a 70MB file via PHP's copy() function, the php process will use nearly the same Memory. I found a (closed) Bug Report (#29922) relatet to this Issue (http://bugs.php.net/bug.php?id=29922), it seems to be fixed long time ago, but in PHP 5.1.4 it is not. Testet with PHP 5.1.4 (on Win-XP and Linux) as Apache2 Module. (All extentins disabled + default php.ini-dist settings) This Bug/Feature does'nt occur in php 4.3.3 (Win-XP as Apache2 Module). Reproduce code: --------------- <?php copy('70MB.data','70MB.data.copy'); /* now look at the (linux) top listing for this Process to trace the growing memmory usage */ ?> Expected result: ---------------- Less Memory Usage in the top listing. Actual result: -------------- Much Memory Usage in the top listing. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=37577&edit=1