i wanted test max_execution_time setting using ini_set function php. setup simple test create infinite loop make sure timeout.
here code
test.php <?php ini_set('max_execution_time', 300); echo "hello world"; //for(;;); commented, see history sleep(100); ?> this code work nicely on windows machine running on top xampp. after 5 minutes, show hello world , fatal error exceeding time out.
then move code vps running ubuntu , apache. open web page browser. but, after 1 minute, browser shows
error code: 503 service unavailable network error communication error occurred: "operation timed out" web server may down, busy, or experiencing other problems preventing responding requests. may wish try again @ later time. it doesn't wait 5 minutes. , consistently error after 1 minute. in error log, apache write fatal error exceeding time after 5 minutes.
so, in opinion, request cancelled before php script done.
i use default setting on apache2.conf additional virtual host
apache2.conf (additional only) <directory /var/www/mysite.com/public> options followsymlinks allowoverride </directory> mysite.virtualhost.conf <virtualhost virtualhost.mysite.com:80> # servername directive sets request scheme, hostname , port # server uses identify itself. used when creating # redirection urls. in context of virtual hosts, servername # specifies hostname must appear in request's host: header # match virtual host. default virtual host (this file) # value not decisive used last resort host regardless. # however, must set further virtual host explicitly. serveradmin admin@mysite.com servername virtualhost.mysite.com serveralias virtualhost.mysite.com documentroot /var/www/mysite.com/public # available loglevels: trace8, ..., trace1, debug, info, notice, warn, # error, crit, alert, emerg. # possible configure loglevel particular # modules, e.g. #loglevel info ssl:warn errorlog ${apache_log_dir}/error.log customlog ${apache_log_dir}/access.log combined </virtualhost> php.ini file
php.ini safe_mode = off max_execution_time = 1200 so, config miss here? think there wrong in apache config don't know part.
update
after looking @ process running, apache process running infinite loop consuming 99% of cpu. why happening? using strace @ process returning this
write(10, "36.72.135.58 - - [22/jul/2016:03:15:35 +0700] \"get /test11.php http/1.1\" 500 211 \"-\" \"mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, gecko) chrome/51.0.2704.103 safari/537.36\"\n", 198) = 198 times({tms_utime=29996, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 4967918020 gettimeofday({1469132442, 496002}, null) = 0 gettimeofday({1469132442, 496046}, null) = 0 shutdown(17, shut_wr) = 0 poll([{fd=17, events=pollin}], 1, 2000) = 1 ([{fd=17, revents=pollin|pollhup}]) read(17, "", 512) = 0 close(17) = 0 read(5, 0x7fff82f5cf67, 1) = -1 eagain (resource temporarily unavailable) gettimeofday({1469132442, 496411}, null) = 0 accept4(4, <detached ...>
i had problem , solved increasing first_byte_timeout of varnish @ /etc/varnish/default.vcl default 60 change according needs.
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