Php Error Exec Unable To Fork
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with php warning: exec(): unable to fork us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow php exec unable to fork windows Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up php "exec(): unable to fork" linux PHP Warning: exec() unable to fork up vote 3 down vote favorite 1 So here is a little background info on my setup. Running Centos with apache and php 5.2.17. I have a website that lists products from many different retailers websites. php unable to fork linux I have crawler scripts that run to grab products from each website. Since every website is different, each crawler script had to be customized to crawl the particular retailers website. So basically I have 1 crawler per retailer. At this time I have 21 crawlers that are constantly running to gather and refresh the products from these websites. Each crawler is a php file and once the php script is done running it checks to ensure its the only instance of itself running and at
Php Warning Exec() Unable To Fork Linux
the very end of the script it uses exec to start itself all over again while the original instance closes. This helps protect against memory leaks since each crawler restarts itself before it closes. However recently I will check the crawler scripts and notice that one of them Isnt running anymore and in the error log I find the following. PHP Warning: exec() [function.exec]: Unable to fork [nice -n 20 php -q /home/blahblah/crawler_script.php >/dev/null &] This is what is supposed to start this particular crawler over again however since it was "unable to fork" it never restarted and the original instance of the crawler ended like it normally does. Obviously its not a permission issue because each of these 21 crawler scripts runs this exec command every 5 or 10 minutes at the end of its run and most of the time it works as it should. This seems to happen maybe once or twice a day. It seems as though its a limit of some sort as I have only just recently started to see this happen ever since I added my 21st crawler. And its not always the same crawler that gets this error it will be any one of them at a random time that are unable to fork its restart exec command. Does anyone have an idea what could be causing php to be unable to fork or maybe even a better way to handle these processes as to get around the error all together? I
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the
Php Warning Exec Unable To Fork Centos
company Business Learn more about hiring developers or posting ads with us Server Fault php unable to fork windows Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; warning: system(): unable to fork it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top PHP script error 'exec(): Unable to http://stackoverflow.com/questions/20648949/php-warning-exec-unable-to-fork fork…' on Ubuntu 14.04.3 LTS up vote 1 down vote favorite I'm running unittest scripts and for test case setup I need to run shell command from time to time. As a result shell command is run around 50 times during unittest execution. It works ok on CentOS release 6.6 (Final) server but doesn't work on Ubuntu 14.04.3 LTS. The problem is that after around 20th time shell script execution I get the following http://serverfault.com/questions/733575/php-script-error-exec-unable-to-fork-on-ubuntu-14-04-3-lts error: exec(): Unable to fork [$(which mysql) -u user -ppwd test_db < "/opt/jenkins/workspace/some - project/application/../tests/Application/assets/sql/test_db.sql" 2> /dev/null] I've checked all the topics around the internet and no one helped me. I've increased process number and open files limit to enormous values # ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 3885 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 100000 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 6553500 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited PHP reports similar numbers. (file test.php contains 2048M => 2048M I've tried to use system, passthrough, shel_exec and it makes not difference. PHP version is 5.6 PHP 5.6.14-1+deb.sury.org~trusty+1 (cli) Does anybody know how to solve the problem? ubuntu php bash shell ubuntu-14.04 share|improve this question
Sign in Pricing Blog Support Search GitHub This repository Watch 333 Star 5,527 Fork 1,294 sebastianbergmann/phpunit Code Issues 119 Pull requests 25 Projects 0 Wiki Pulse Graphs PHP error "Unable to fork" when running with large https://github.com/sebastianbergmann/phpunit/issues/1839 of test case #1839 Closed ninja-saigon opened this Issue Aug 29, 2015 · 1 comment Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 2 participants ninja-saigon commented Aug 29, 2015 In my test suite, I use php exec() function to do some stuffs. When running with a large of test case that exec function thrown out the warning as below: exec(): Unable to unable to fork [/bin/rm -rf ./*] It's seem, when we call exec() function, new process was not created. I found related issue at: https://bugs.php.net/bug.php?id=18833&edit=1 Is this related to the max number of processes allowed in the memory, or a PHP problem ???. Anyone has same issue too ? Owner sebastianbergmann commented Oct 2, 2015 Dear contributor, let me start by apologizing for not commenting and/or working on the issue you have reported or merging unable to fork the pull request you have sent sooner. PHPUnit 5.0 was released today. And today I am closing all open bug reports and pull requests for PHPUnit and its dependencies that I maintain. Please do not interpret the closing of this ticket as an insult or a lack of interest in your problem. I am sorry for any inconvenience this may cause. If the topic of this ticket is still relevant then please open a new ticket or send a new pull request. If your ticket or pull request is about a defect then please check whether the issue still exists in PHPUnit 4.8 (which will received bug fixes until August 2016). If your ticket or pull request is about a new feature then please port your patch PHPUnit 5.0 before sending a new pull request. I hope that today's extreme backlog grooming will allow me to respond to bug reports and pull requests in a more timely manner in the future. Thank you for your understanding, Sebastian sebastianbergmann closed this Oct 2, 2015 sebastianbergmann locked and limited conversation to collaborators Oct 2, 2015 Sign up for free to subscribe to this conversation on GitHub. Already have an account? Sign in. Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Te