When running tail -f filename
, I got the following message:
tail: inotify cannot be used, reverting to polling: Too many open files
Is that a potential problem?
How do I diagnose what's responsible for all the open files? I have a list of suspect processes, but if they don't turn out to be the culprits, instructions that don't rely on knowing which process to check would be useful.
Best Answer
You can use lsof to understand who's opening so many files. Usually it's a (web)server that opens so many files, but lsof will surely help you identify the cause.
Once you understand who's the bad guy you can
If output from lsof is quite huge try redirecting it to a file and then open the file
Example (you might have to Ctrl+C the first command)