[DXP] Too many open files

[6年前 に David Bougearel によって更新されました。]

Hi,

On liferay DXP, we are facing to a too many open files where the ulimit is set to 4096.
Is there any preconisation for this setting for liferay dxp usage ?

Thanks.

Best regards,
David.

[6年前 に Olaf Kock によって更新されました。]

David Bougearel:

On liferay DXP, we are facing to a too many open files where the ulimit is set to 4096.
Is there any preconisation for this setting for liferay dxp usage ?

I haven't played with this parameter - just checked my local setup, and it reveals "unlimited".

Does this happen with a vanilla installation or with your custom components? Will it happen later (or not at all) if you raise the limit? It might be worth checking which files indeed are open.

Lowering the available memory might help raise the GC frequency, which would clean up resources as well: Leaving file references open&dangling combined with infrequent garbage collection.

Or, it might just be a too low parameter - as I said, I can't recall to ever having experimented with it. How did you get to this setting?

[6年前 に Jorge Díaz によって更新されました。]

Hi David,

For any Java application that runs in a application server (Liferay, Alfresco, Documentum, etc...), I always configure ulimit to the maximum size that allows the operating system.

Important: in Linux/Unix, any TCP connection is consider as an open file, so "too many open files" error is produced when (number of opened files + number of tcp connections) are greater than configured limit at operating system level

For more information about configuring the maximum size, search in google:

• https://stackoverflow.com/questions/1212925/on-linux-set-maximum-open-files-to-unlimited-possible
• http://abregman.com/2015/10/18/25/
• https://www.networkworld.com/article/2693414/operating-systems/setting-limits-with-ulimit.html

[6年前 に David Bougearel によって更新されました。]

Hi guys,

Thanks for your answers, it's enough for me.
Have a nice day.

Best regards,
David.