What is the recommended fs.file-max value on redhat7

Question

How to calculate fs.file-max? what is the recommended value for rhel-7 and how to calculate the correct value?

What is the application type that is running on your machine and what are the hardware specifications? — Mircea Vutcovici, Aug 24 '20 at 19:55
How long is a piece of string? You make it as large as you need it. — Michael Hampton, Aug 24 '20 at 20:40

score 2 · Answer 1 · answered Aug 24 '20 at 19:54

2

You can increase it to as much as you want or need, as long as you have enough memory available and free CPU cycles.

Fedora 32 64bit has as default fs.file-max = 9223372036854775807

answered Aug 24 '20 at 19:54

Mircea Vutcovici

What is the math behind that large number? – KKE Aug 24 '20 at 22:57
it is just the default that is coming with Fedora 32 kernel. It is the maximum 64 bit integer: 2⁶³−1. – Mircea Vutcovici Aug 24 '20 at 23:22
See also: https://github.com/systemd/systemd/commit/a8b627aaed409a15260c25988970c795bf963812 – Mircea Vutcovici Aug 24 '20 at 23:25

1 Answers1