Set the open files limit
Why open files ulimit should be set
Rolling back to a previous backup can silently fail, resulting in incomplete data being written to the file system or database using the magento setup:rollback
command.
In some cases, a very long query string causes the user’s allocated memory space to run out of memory because of too many recursive calls.
How to set open files ulimit
We recommend setting the open files ulimit
for the Magento file system user to a value of 65536 or more.
You can do this either on the command line or you can make it a permanent setting for the user by editing their shell script.
Before you continue, if you haven’t done so already, switch to the file system owner.
Command:
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ulimit -s 65536
You can change this to a larger value if needed.
The syntax for open files ulimit
depends on the UNIX shell you use. The preceding setting should work with CentOS and Ubuntu with the Bash shell. However, for Mac OS, the correct setting is ulimit -S 65532
. Consult a man page or operating system reference for more information.
To optionally set the value in the user’s Bash shell:
- If you haven’t done so already, switch to the file system owner.
- Open
/home/<username>/.bashrc
in a text editor. -
Add the following line:
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ulimit -s 65536
- Save your changes to
.bashrc
and exit the text editor.
We recommend you avoid setting a value for pcre.recursion_limit
in php.ini
because it can result in incomplete rollbacks with no failure notice.