ID: 10299 User Update by: [EMAIL PROTECTED] Status: Open Bug Type: Performance problem Description: CPU and Memory Spike This is vmstat show if I keep reloading the script procs memory page disks faults cpu r b w avm fre flt re pi po fr sr da0 da1 in sy cs us sy id 1 4 0 73860 13432 4 0 0 0 0 0 2 0 382 3804 258 16 1 83 0 4 0 73860 13424 4 0 0 0 0 0 0 0 357 3789 245 15 4 81 1 4 0 73860 13424 4 0 0 0 0 0 0 0 373 3763 263 14 3 83 2 4 0 73860 13416 142 0 0 0 139 0 0 0 402 6155 285 26 4 70 0 4 0 73860 13408 4 0 0 0 4 0 11 0 366 3179 220 11 2 87 1 4 0 73860 13400 4 0 0 0 0 0 0 0 358 3943 257 15 3 82 2 4 0 73860 13400 4 0 0 0 0 0 0 0 340 4201 240 12 42 45 2 4 0 73860 13400 4 0 0 0 0 0 0 0 240 1842 90 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 19 0 265 1802 98 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 241 1753 93 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 239 1729 96 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 241 1612 94 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 243 1576 97 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 243 1541 98 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 239 1487 102 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 241 1401 93 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 251 1405 100 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 246 1338 101 0 100 0 2 4 0 73116 13400 4 0 0 0 0 0 0 0 238 1297 94 0 100 0 2 4 0 73860 13400 4 0 0 0 0 0 0 2 243 1282 100 0 100 0 2 4 0 73860 13400 4 0 0 0 0 0 0 0 239 1223 89 0 100 0 2 4 0 73860 13400 4 0 0 0 2 0 9 16 300 1180 92 0 100 0 procs memory page disks faults cpu r b w avm fre flt re pi po fr sr da0 da1 in sy cs us sy id 3 4 0 73860 13400 4 0 0 0 0 0 0 0 251 1156 90 0 100 0 3 4 0 50296 13400 4 0 0 0 0 0 6 0 258 1116 93 0 100 0 2 4 0 50296 13400 4 0 0 0 0 0 0 0 240 1108 83 0 100 0 3 4 0 50296 13400 4 0 0 0 0 0 0 0 245 1064 92 0 100 0 3 4 0 46988 13400 4 0 0 0 0 0 0 0 242 1031 83 0 100 0 3 4 0 46988 13400 4 0 0 0 0 0 0 0 242 989 82 0 100 0 2 4 0 46988 13400 4 0 0 0 0 0 0 0 243 1010 85 0 100 0 2 4 0 46988 13400 4 0 0 0 0 0 1 0 241 985 81 0 100 0 2 4 0 46988 13400 4 0 0 0 0 0 0 0 241 971 89 1 99 0 2 4 0 46988 13400 4 0 0 0 0 0 0 0 243 940 74 0 100 0 3 4 0 46988 13400 4 0 0 0 2 0 8 0 250 926 80 0 100 0 2 4 0 46988 13400 4 0 0 0 0 0 1 0 245 930 88 0 100 0 3 4 0 46988 13400 4 0 0 0 0 0 0 0 240 905 80 0 100 0 2 4 0 46988 13400 4 0 0 0 0 0 7 0 253 920 100 0 98 2 3 4 0 47332 13056 90 0 0 0 0 0 0 0 239 2113 116 3 97 0 2 4 0 46588 13048 4 0 0 0 0 0 1 0 243 2334 103 1 99 0 1 4 0 46244 13392 4 0 0 0 86 0 8 0 276 4383 140 7 19 74 1 4 0 47896 13184 59 0 0 0 0 0 2 0 275 621 56 7 1 92 0 4 0 47896 13152 20 0 0 0 0 0 1 0 253 471 46 6 1 93 1 4 0 47492 13372 18 0 0 0 64 0 0 0 251 478 43 0 1 99 0 4 0 47492 13372 4 0 0 0 0 0 0 0 235 440 40 0 0 100 0 4 0 47492 13372 4 0 0 0 0 0 0 0 238 442 40 0 2 98 The CPU time drop from 80 all the way to zero and make the Apache hang for like 30 seconds and the resume back again. It happens VERY often if I only have like 30 users surf the website at the same time. It pretty much bring the web server down if I have around 50 users surft the site Previous Comments: --------------------------------------------------------------------------- [2001-04-11 18:03:59] [EMAIL PROTECTED] I am running on FreeBSD 4.2 Stable, Apache 1.3.19 + PHP 4.0.4pl1 + Modssl on a Dual P2 400mhz with 256mb ram. From time to time, one of the httpd process will eat up all the CPU time and memory, and after around 5 to 10 seconds, it goes back to normal Even a Very simple script like <? echo "test"; ?> can make it happen. 1 out of 25 reload of the above script can make the spike happen. But the web server do not crash though. If I run on a script with heavy database access, it happen 1 out of 10 if I press reload button continously. BTW, is that normal for Apache to take up 30% of the CPU time to excute one single PHP-database-driven page? I search the bugs database and I found another user have the exact problem like what I am having right now. His bug id is #9154. This is how I configure PHP ./configure --with-mysql=/usr/local/mysql --with-apxs=/usr/local/apache/bin/apxs --with-config-file-path=/usr/local/etc --enable-track-vars --enable-ftp --with-gd=/usr/local --with-pcre-regex=/usr/local/ --with-jpeg-dir=/usr/local --with-xpm-dir=/usr/X11R6 With or Without modssl enable does not make a difference. Both can cause the spike. --------------------------------------------------------------------------- Full Bug description available at: http://bugs.php.net/?id=10299 -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
