I found that my linux workstation with 12 CPUs had almost stopped to work after I executed a shell script (tcsh) having a for-loop where more than hundreds of loops are executed simultaneously by adding '&' at the end of the command. Is there any way to control the number or executing time for background processes in the for-loop using tcsh?
How to control multithreaded background jobs in for loop in shell script
104 views Asked by Yong Wook Shin At
1
There are 1 answers
Related Questions in MULTITHREADING
- php Variable name must change in for loop
- register_shutdown_function is not getting called
- Query returning zero rows despite entries existing
- Retrieving *number* pages by page id
- Automatically closing tags in form input?
- How to resize images with PHP PARSE SDK
- how to send email from localhost using codeigniter?
- Mariadb max Error while sending QUERY packet PID
- Multiusers login redirect different page in php
- Imaginary folder when I use "DirectoryIterator" in PHP?
Related Questions in SHELL
- php Variable name must change in for loop
- register_shutdown_function is not getting called
- Query returning zero rows despite entries existing
- Retrieving *number* pages by page id
- Automatically closing tags in form input?
- How to resize images with PHP PARSE SDK
- how to send email from localhost using codeigniter?
- Mariadb max Error while sending QUERY packet PID
- Multiusers login redirect different page in php
- Imaginary folder when I use "DirectoryIterator" in PHP?
Related Questions in FOR-LOOP
- php Variable name must change in for loop
- register_shutdown_function is not getting called
- Query returning zero rows despite entries existing
- Retrieving *number* pages by page id
- Automatically closing tags in form input?
- How to resize images with PHP PARSE SDK
- how to send email from localhost using codeigniter?
- Mariadb max Error while sending QUERY packet PID
- Multiusers login redirect different page in php
- Imaginary folder when I use "DirectoryIterator" in PHP?
Related Questions in BACKGROUND
- php Variable name must change in for loop
- register_shutdown_function is not getting called
- Query returning zero rows despite entries existing
- Retrieving *number* pages by page id
- Automatically closing tags in form input?
- How to resize images with PHP PARSE SDK
- how to send email from localhost using codeigniter?
- Mariadb max Error while sending QUERY packet PID
- Multiusers login redirect different page in php
- Imaginary folder when I use "DirectoryIterator" in PHP?
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
GNU Parallel is made for this kind of situations.
GNU Parallel is a general parallelizer and makes is easy to run jobs in parallel on the same machine or on multiple machines you have ssh access to.
If you have 32 different jobs you want to run on 4 CPUs, a straight forward way to parallelize is to run 8 jobs on each CPU:
GNU Parallel instead spawns a new process when one finishes - keeping the CPUs active and thus saving time:
Installation
If GNU Parallel is not packaged for your distribution, you can do a personal installation, which does not require root access. It can be done in 10 seconds by doing this:
For other installation options see http://git.savannah.gnu.org/cgit/parallel.git/tree/README
Learn more
See more examples: http://www.gnu.org/software/parallel/man.html
Watch the intro videos: https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1
Walk through the tutorial: http://www.gnu.org/software/parallel/parallel_tutorial.html
Sign up for the email list to get support: https://lists.gnu.org/mailman/listinfo/parallel