[lustre-discuss] Acceptable thresholds

[Patrick Farrell]

Several processes per CPU core, probably?  It’s a lot.

But there’s a lot of environmental and configuration dependence here too.

Why not look at how many you have running currently when Lustre is set up and set the limit to double that?  Watching process count isn’t a good way to measure load anyway - it’s probably only good for watching for a fork-bomb type thing, where process count goes runaway.  So why not configure to catch that and otherwise don’t worry about it?

- Patrick

From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org<mailto:lustre-discuss-bounces at lists.lustre.org>> on behalf of "E.S. Rosenberg" <esr+lustre at mail.hebrew.edu<mailto:esr+lustre at mail.hebrew.edu>>
Date: Thursday, October 19, 2017 at 2:20 PM
To: "lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>" <lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>>
Subject: [lustre-discuss] Acceptable thresholds

Hi,
This question is I guess not truly answerable because it is probably very specific for each environment etc. but I am still going to ask it to get a general idea.

We started testing monitoring using Zabbix, its' default 'too many processes' threshold is not very high, so I already raised it to 1024 but the Lustre servers are still well over even that count.

So what is a 'normal' process count for Lustre servers?
Should I assume X processes per client? What is X?

Thanks,
Eli
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