Performance/dimensioning stats

[Christopher Bongaarts]

On 11/16/2012 10:23 AM, C G wrote:

> Would really appreciate if current shib idp admins/deployers
> shed some light on a few things
>
> a) what would be a  typical memory vs. numbers of users (/sec) stat?
> b) multi-tenenat/sp scaling (any limitations?)
> c) In a typical univ scenario, ~20-40K users with typical *nix boxes
>      what is the footprint/size?

Our IdP (using a custom LDAP-based login handler and defining a few 
dozen attributes, a few of which are scripted):

Six production RHEL6.3 VMs
4x2GHz Xeon X6550 (or equivalent)  8GB RAM (2 CPU hyperthreaded I think)
Tomcat 6.x Java 1.6.0.xx with java options:
-d64 -server -Xmx2g -XX:+UseParallelOldGC
-XX:PermSize=128m
-XX:MaxPermSize=128m

Observed CPU usage about 5% per server, doing about 90,000 "logins" 
(lines in idp-audit.log) per day per server mid-semester (now).

That's about 30K unique users.

I'm pretty sure we could make it fly with a couple fewer boxes.


> Are these stats published anywhere? if so appreciate any pointers to
> them. Good day.

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