#20551 [Com]: Output compression causes segfaults (ob_gzhandler)

ID: 20551 Comment by: sroussey@network54.com Reported By: sroussey@network54.com Status: Feedback Bug Type: Output Control Operating System: RedHat 7.2 PHP Version: 4.2.3 New Comment: zlib.output_compression is PHP_INI_SYSTEM|PHP_INI_PERDIR so it can't be set in a script according to the manual (ini_set). Is this correct? Does this change in 4.3? Previous Comments: ------------------------------------------------------------------------ [2002-11-27 13:55:13] sroussey@network54.com Using ini_set ( "zlib.output_compression", 1);// or "On" or 4096 ... instead of: ob_start ('ob_gzhandler'); does not actually compress pages... ------------------------------------------------------------------------ [2002-11-27 13:12:35] sroussey@network54.com The problem with setting it system wide is that it will try to compress images and javascripts. No browser likes compressed images and Netscape dies on compressed javascripts. Or are you suggesting that I use: ini_set ( "zlib.output_compression", 1); instead of: ob_start ('ob_gzhandler'); ?? Does this work in PHP 4.2.3? ------------------------------------------------------------------------ [2002-11-27 11:30:07] wez@php.net We recommend using zlib.outputcompression instead of ob_gzhandler; maybe this will solve your issues, without the need to upgrade PHP. ------------------------------------------------------------------------ [2002-11-27 09:31:15] sroussey@network54.com One thing I forgot to add: I tried backporting all the fixes from CVS that referenced crashes/segfaults from zlib.c, output.c, and streams.c with no improvement. In the middle of the night, I'm going to temporarily install 4.3RC1 which will disable the accelerator and kick the load average to the roof, but hopefully I'll be able to check the error log for segfaults. ------------------------------------------------------------------------ [2002-11-27 09:26:39] sroussey@network54.com One other note that may be of interest to people search the bug the list. This bug has the net result of pushing the load average up to 150 from 6 in a series of spikes (more dense as traffic increases). ------------------------------------------------------------------------ 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/20551 -- Edit this bug report at http://bugs.php.net/?id=20551&edit=1