Hi, this warning just started appearing for some larger books. It's due
to the number of file handles open hitting the default limit.
The number of files goes something like:
coverpage file + toc file + main file + ((footer file + header file) *
pages main file is paginated too))
On Linux you can run `ulimit -n` to get the current limit.
So 1024 - 3 / 2 = 510.5
So assuming you have some file handles open for other things, at around
500 pages this will start happening with the default file handle limit.
On some Linuxes you can run `ulimit -n 8192` to change the limit for the
current shell. Handy for testing.
To make this permanent:
sudo vim /etc/security/limits.conf
Then add these two lines:
* soft nofile 8192
* hard nofile 8192
Save, and re-login for it to take effect.
FYI for packagers, the Brew/Koji limits are set to 8192 so this will not
affect packages building.
Cheers, Jeff.
--
Jeff Fearn <[email protected]>
Senior Software Engineer
Infrastructure Engineering & Development (AEU)
Red Hat Asia Pacific Pty Ltd
GPG: 0x0357E8F0
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