i dont suppose this is a session garbage collection??
Cameron
[EMAIL PROTECTED] wrote:
> ID: 10299
> User Update by: [EMAIL PROTECTED]
> Status: Critical
> Bug Type: Performance problem
> Operating system: FreeBSD 4.2 Stable
> PHP Version: 4.0.4pl1
> Description: CPU and Memory Spike
>
> What I found out is that using a lot of include_once, require_once + session will
>trigger the CPU and memory spike. Add database access to the script can speed up the
>frequency of the spike. And I also found out require_once DO leak memory. pstat -T
>show that file in use will always increase. Somehow require_once forgot to close the
>file after use. lsof can give you a clear picture when you use require_once()
>
> I changed my code using cookie and require() statement now. And I delete all
>sess_files in /tmp seems to correct the problem. This is the only change I made to
>eliminate the problem.
>
> I can't reproduce the error now because the code that have problems have been
>changed and I don't have the backup. But the combination of A lot of include_once,
>require_once, and session will trigger the spike, I am pretty sure because after I
>changed all that, the problem disappear. Old session file in /tmp also contribute to
>the problem as well.
>
> BTW, the last time I checked, CVS version 4.06 in late April still have the problem.
>
> Previous Comments:
> ---------------------------------------------------------------------------
>
> [2001-05-08 19:26:01] [EMAIL PROTECTED]
> Is this fairly reproducible?
> If it is, any chance you could build Apache with debug information (--enable-debug
>in configure), attach to an offending process (gdb /path/to/httpd <PID>), and run a
>backtrace ('bt')?
>
> ---------------------------------------------------------------------------
>
> [2001-05-07 12:44:51] [EMAIL PROTECTED]
> marking critical for php 4.0.6
>
> ---------------------------------------------------------------------------
>
> [2001-04-14 09:00:57] [EMAIL PROTECTED]
> I found the problem. since the script I use have a lot of include and require
>statement. just a script include a bunch of files and keep reloading the page will
>kill the server in no time. I attach a sample config file I usually include, just
>make a test.php and include this file like 10 times to simulate a lot of include
>files. And then, just keep reloading test.php. You should see the script take a lot
>of CPU time and eventually the httpd eat all the CPU time and the process hang. From
>command "top", one of the httpd process keep eating up CPU time.
>
> The following is the sample config file
>
> <?
>
> /*Root directory */
> $config[root_path] = "/usr2/home/business/test/www";
> $config[w3b_path] = "/usr2/home/business/test/www/wwwthreads";
> $config[data_path] = "/usr2/home/business/test/data";
> $config[rdf_path] = "/usr2/home/business/test/www/rdf";
>
> /* database */
>
> include $config[root_path]."/db.php";
>
> /* global */
> $config[sitename] = "www.test.net";
> $config[root_url] = "http://www.test.net/";;
>
> // Cookie Setting
> $config[cookie_path] = "/"; # web root directory
> $config[CookieURL] = ".test.net";
> $config[cookieTTL] = 7200; // in seconds
>
> $config[minpass] = 3; # Minimum user password length in characters
>
> /* language and locale */
> $config[language] = "english"; # [english] english, [big5] BIG5 code
>
> $config[locale] = "english"; # Used for translation of date-related stuff
>
> /* story control */
> $config[commentmax] = 4096;
> $config[abstractlen] = 4996; #length of abstract show on first page
>
> $config[icon_width] = 100; # Topic icons width
> $config[timezone] = "HKT"; #Time zone
>
> $config[limitnews] = 10; # default number of stories per page
> $config[older_story_num] = 10; # number of older stories to display
>
> $config[anon_users] = 0; # 1 to allow anonymous postings
> # 0 to disable
>
> /* theme control */
>
> $config[def_theme] = "Main"; # name of default theme (see themes/ directory for
>list)
>
> /* mail settings */
> $config[use_fake_email] = 1; # Displays fake email addresses for users instead of
>the real ones
>
> $config[notifyEmail] = "[EMAIL PROTECTED]"; #address where you want to
>receive notice
>
> //$config[CensorList] =
>array('fuck','cunt','fucker','fucking','pussy','cock','c0ck','cum','bitch','shit');
> $config[CensorList] = array("/fuck/s","/fuck/s","/fuck/s",
> "/[a-z]*fuck[a-z]*/is",
> "/[a-z]*cunt[a-z]*/is",
> "/[a-z]*pussy[a-z]*/is",
> "/[a-z]*cock[a-z]*/is",
> "/[a-z]*c0ck[a-z]*/is",
> "/[a-z]*shit[a-z]*/is",
> "/[a-z]*bitch[a-z]*/is",
> "/[a-z]*diu[a-z]*/is"
> );
> # See also specific LOCALE definitions
>
> $config[CensorMode] = 3; # 0: no filtering
> # 1: exact match
> # 2: match word beginnings
> # 3: match string anywhere in words
> $config[CensorReplace] = "[CENSORED]" ;
>
> /* allowable HTML tags. Used by check_html()
> Happily lifted (with mods) from phpslash */
> $config[AllowableHTML] = array("p"=>1, # 2 means accept all qualifiers: <foo bar>
> "b"=>1, # 1 means accept the tag only: <foo>
> "i"=>1,
> "a"=>2,
> "em"=>1,
> "br"=>1,
> "strong"=>1,
> "blockquote"=>1,
> "img"=>2,
> "tt"=>1,
> "hr"=>1,
> "li"=>1,
> "ol"=>1,
> "div"=>1,
> "ul"=>1);
>
> $config[AllowableHTMLtag] =
>"<b>,<i>,<a>,<em>,<br>,<strong>,<blockquote>,<tt>,<hr>,<li>,<ol>,<div>,<ul>";
>
> /* poll settings */
>
> $config[maxOptions] = 12; # maximal number of options allowed
> $config[BarScale] = 1; # scale of result bar (in multiples of 100 pixels)
>
> $config[warnCheaters] = 1; # 1 - a notice issued on vote second try
> # 0 - silently ignores the vote
>
> $config[maxOptions] = 10;
>
> /* story stuff */
>
> $reasons = array('As is', # "Normal"
> 'Offtopic', # Bad Responses
> 'Flamebait',
> 'Troll',
> 'Redundant',
> 'Insightful', # Good Responses
> 'Interesting',
> 'Informative',
> 'Funny',
> 'Overrated', # Last two are "special"
> 'Underrated');
>
> if ($config[dateString] == "") {
> switch ($config[locale]) {
> // specifier specs can be found on
>http://www.php.net/manual/function.strftime.php /menthos
> case "english": $config[dateString] = "%a, %b %d,%Y @ %I:%M %p";
>break;
> case "french": $config[dateString] = "%a %d %B %Y à %H:%M";
>break;
> case "german": $config[dateString] = "%a, %d. %b %Y %H:%M"; break;
> case "italian": $config[dateString] = "%a %d %b %Y %H:%M"; break;
> case "swedish": $config[dateString] = "%a %d %b %Y, %H:%M"; break;
> case "dutch": $config[dateString] = "%a, %d. %b %Y %H:%M"; break;
> case "spanish": $config[dateString] = "%a %d %b %Y %H:%M"; break;
> default: $config[dateString] = "%a %b %d @ %H:%M"; break;
> }
> }
>
> ?>
>
> ---------------------------------------------------------------------------
>
> [2001-04-14 07:59:05] [EMAIL PROTECTED]
> 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
>
> ---------------------------------------------------------------------------
>
> [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.
>
> ---------------------------------------------------------------------------
>
> The remainder of the comments for this report are too long. To view the rest of the
>comments, please view the bug report online.
>
> Full Bug description available at: http://bugs.php.net/?id=10299
>
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