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Where can I get good guidance on sane values for open file descriptor limits on linux.
We have users asking for massive numbers as their limits and I am unsure of the impact of this and what should be considered before raising this kind of limit extremely high. 200 000 +
Andrew Gargan
Posted 2013-05-29T11:46:41.607
Reputation: 1
1200,000+ is not sane. – Ignacio Vazquez-Abrams – 2013-05-29T11:49:36.707
Depends on the program. For example, 200k sounds about right if the program expects to handle 200k simultaneous TCP connections in a single process, but it's a bit too high for other software. – user1686 – 2013-05-29T11:58:24.473
So what are the considerations from a resources perspective. I understand that the kernel uses and into to address these descriptors and a very small struct to represent them in memory. The program in question is a Java application server which is a tier behind a web application. Typical limits I have seen in the same space are around 32000 the request seems excessive. the boxes are typically in a load balance cluster of vm's. – Andrew Gargan – 2013-05-29T12:28:27.877