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Bugs for Performance problem
ID# Date Last Modified Type Status PHP Version OS Summary Assigned
60139
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2011-10-26 10:36 UTC 2011-11-02 06:31 UTC Bug Closed 5.4.0beta2   Anonymous functions create cycles not detected by the GC dmitry
69440
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2015-04-13 22:39 UTC 2015-04-14 07:00 UTC Bug Closed 5.6.8RC1   Perfomance of function count() with array getted by references nikic
3579
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2000-02-23 05:09 UTC 2000-03-01 15:07 UTC Bug Closed 4.0 Beta 4 Patch Level 1      
27275
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2004-02-16 07:38 UTC 2004-03-15 10:12 UTC Bug Closed 5CVS-2004-02-16 (4CVS) * Array->String cast takes serious performance hit, leaks like crazy  
30295
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2004-09-30 23:23 UTC 2006-01-01 21:54 UTC Bug Closed 5CVS, 4CVS (2005-06-20) * array_key_exists() makes a copy of the given array  
31332
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2004-12-29 12:30 UTC 2005-01-16 09:51 UTC Bug Closed 4CVS, 5CVS (2005-01-04) * unserialize() works terribly slow on huge strings compared to 4.3.9  
44069
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2008-02-07 13:39 UTC 2008-02-14 15:20 UTC Bug Closed 5.2.5 * Huge memory usage with concatenation using . instead of .= dmitry
47643
(edit)
2009-03-13 11:49 UTC 2010-11-01 18:18 UTC Bug Closed 5.*, 6CVS (2009-04-13) * array_diff() takes over 3000 times longer than php 5.2.4 felipe
63699
(edit)
2012-12-05 15:52 UTC 2013-01-06 02:12 UTC Bug Closed 5.4.9 * Poor date()/etc performance [PATCH] lstrojny
75511
(edit)
2017-11-10 08:53 UTC 2017-11-13 01:10 UTC Bug Closed Irrelevant * fread not free unused buffer.  
80061
(edit)
2020-09-04 16:29 UTC 2020-09-21 14:11 UTC Bug Closed 7.4Git-2020-09-04 (Git) * Copying large files may have suboptimal performance cmb
2291
(edit)
1999-09-14 04:36 UTC 1999-09-25 11:59 UTC Bug Closed 4.0 Beta 2 AIX 4.3.2 Slow file upload  
19749
(edit)
2002-10-04 03:21 UTC 2004-04-21 14:04 UTC Bug Closed 4CVS-2002-10-04 All shouldn't mmap() files larger than memory_limit in _php_stream_passthru wez
40261
(edit)
2007-01-28 00:30 UTC 2007-03-20 07:14 UTC Bug Closed 5.2.0 All Extremely slow data handling due to memory fragmentation dmitry
63666
(edit)
2012-12-02 00:50 UTC Not modified Bug Closed 5.4.9 any Poor date() performance [PATCH]  
2662
(edit)
1999-11-04 04:19 UTC 2000-03-17 05:35 UTC Bug Closed 4.0 Latest CVS (04/11/1999) Debian 2.0r3 Strange echo/printf perfomance  
79794
(edit)
2020-07-05 00:18 UTC 2020-07-09 09:20 UTC Bug Closed 7.4.7 Debian GNU/Linux 9 Speed degradation with many NOTICEs and set_error_handler laruence
1379
(edit)
1999-05-06 05:21 UTC 1999-05-06 11:19 UTC Bug Closed 3.0.5 debian Linux 2.0 (Kernel 2.0.36) PHP3 does not return full pages when databases are accessed  
66939
(edit)
2014-03-21 20:07 UTC 2016-12-17 15:29 UTC Bug Closed 5.4.26 Debian Wheezy memory leak when assigning big arrays of objects to variable while iterating nikic
45942
(edit)
2008-08-28 17:36 UTC 2008-09-03 21:05 UTC Bug Closed 5.2.6 Fedora Core 6 D_FILE_OFFSET_BITS=64 causes PHP to run at half speed  
1831
(edit)
1999-07-22 12:15 UTC 1999-08-20 12:09 UTC Bug Closed 4.0 Beta 1 FreeBSD 3.0 PHP4 as CGI parses itself  
2978
(edit)
1999-12-15 05:36 UTC 1999-12-26 11:16 UTC Bug Closed 4.0 Beta 3 FreeBSD 3.2-RELEASE very high load averages / cpu usage  
4796
(edit)
2000-06-03 19:11 UTC 2000-07-06 17:58 UTC Bug Closed 4.0.0 Release FreeBSD 4.0 WWW server runs on high loads all the time even with no requests at all.  
7747
(edit)
2000-11-10 10:42 UTC 2001-11-10 08:42 UTC Bug Closed 4.0.3pl1 FreeBSD 4.0-RELEASE Apache 1.3.1 after opening a socket and while reading from it php start growing CPU/MEM usag  
63160
(edit)
2012-09-25 08:09 UTC 2019-07-17 12:58 UTC Bug Closed 5.4.7 GNU/Linux Lot of fstat call during include nikic
64935
(edit)
2013-05-28 10:07 UTC 2014-11-19 12:29 UTC Bug Closed 5.4.15 GNU/Linux Huge memory usage on unknown Content-Type mike
3678
(edit)
2000-03-01 05:17 UTC 2000-03-01 12:25 UTC Bug Closed 4.0 Latest CVS (01/03/2000) guess every :) array overhead not good  
10745
(edit)
2001-05-09 05:13 UTC 2001-06-04 04:51 UTC Bug Closed 4.0.4pl1 HP-UX B.11.00 swap problems  
197
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1998-03-25 15:35 UTC 1998-03-28 12:20 UTC Bug Closed 3.0b6 IRIX 6.2 apache1.3 process grows > 50meg, coredumps, sometimes crashing machine.  
204
(edit)
1998-03-26 21:27 UTC 1998-04-25 13:35 UTC Bug Closed 3.0 Release Cand IRIX 6.2 memory_limit does not appear to work. jim
  Showing 1-30 of 175 Show Next 30 Entries »
 
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