[#80] Filehandle and process limit on redhat
Summary Filehandle and process limit on redhat
Queue Polarhome
Queue Version redhat
Type Issue
State Unconfirmed
Priority 1. Low
Owners
Requester tange (at) polarhome (dot) com
Created 09/16/2018 (29 days ago)
Due
Updated
Assigned
Resolved
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History
09/16/2018 tange (at) polarhome (dot) com Comment #1
State ⇒ Unconfirmed
Priority ⇒ 1. Low
Type ⇒ Issue
Summary ⇒ Filehandle and process limit on redhat
Queue ⇒ Polarhome
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When I test GNU Parallel I use redhat as the central node. From there 
I ssh in parallel to all the other systems.

But because the limit of processes and open files is very low (100 and 
200) I can only run very few jobs in parallel.

It is fine to keep the soft limit where it is, but it would be nice if 
the hard limit was much higher. So that you can raise the limit if you 
know what you are doing.

On most of my systems I have 1M file handles, and I do not experience 
any performance or memory issues due to this.

So the adjustment is for nofile and noproc in /etc/security/limits.conf

These seem OK: /proc/sys/fs/file-max /proc/sys/kernel/pid_max