Scott,
How much memory are you allocating for each of your CAS instances i.e.
-Xmx
-Xms
-Xmn
Thanks,
Hanh
Date: Wed, 1 Apr 2009 14:28:30 -0400
From: [email protected]
Subject: Re: [cas-user] system requirements for CAS
To: [email protected]
Here's some basics. This is the statistics for one machine (so double would be
our daily, approx):
March 31, 2009
TOTAL AUTHENTICATIONS: 47354
PER HOUR (00 == midnight, for the non 24-hour inclined):
1711 00
1043 01
639 02
339 03
213 04
179 05
288 06
659 07
1485 08
2422 09
2860 10
3254 11
3239 12
3199 13
3042 14
3042 15
2777 16
2417 17
2446 18
2320 19
2422 20
2634 21
2529 22
2195 23
These are just authentications, not proxying, service tickets, etc. On a
normal day (which these stats are), you could barely even tell the machine was
doing anything. I think normal usage is < 5% CPU utilization each on the new
machines.
I can get other stats if you're interested. Our portal is what drives most of
our traffic to CAS.
-Scott
On Wed, Apr 1, 2009 at 2:21 PM, Johan Reinalda <[email protected]>
wrote:
Scott,
could you give an idea of how many authenticated users you
have ?
(Is there a way to monitor that with the regular memcache, or
repcache ticket registries ?)
We are current plannin on rolling our for the fall semester at
Thunderbird, and are looking at scoping hardware also... We will run on Linux
(CentOS) with Tomcat6
(This probably pales in comparison to you, but we have about 1000 regular
students, and our alumni are active also, with about 3-5000 on most
days.)
thanks,
Johan
----- Original Message -----
From:
Scott Battaglia
To: [email protected]
Sent: Tuesday, March 31, 2009 7:26
PM
Subject: Re: [cas-user] system
requirements for CAS
The T5120 specs (I don't remember our exact config):
http://www.sun.com/servers/coolthreads/t5120/
The
V240 specs:
http://www.sun.com/servers/entry/v240/
We
also at one point used a Sun V120, which is a single CPU machine
(yikes!)
-Scott
On Tue, Mar 31, 2009 at 8:58 PM, Hanh Do <[email protected]>
wrote:
thanks Scott.
What were the system specs on your V240 and
T5120?
Date: Tue, 31 Mar 2009 20:34:47 -0400
From: [email protected]
Subject: Re: [cas-user]
system requirements for CAS
To: [email protected]
On Tue, Mar 31, 2009 at 4:50 PM, Hanh Do <[email protected]> wrote:
Are there any established doc on system requirements (CPU, memory,
etc) for running CAS server specifically with cluster and JPA ticket
replication? I'm targeting CAS3 on Linux. Does anyone have specs on their
stable Production environment that they can list?
It all depends on your load.
We used to run a single CAS
server (with a warm spare), with the machine being Sun's V240 without any
problems for the most part. It started to have some issues during peak
registration period, reaching > 80% CPU utilization. We now run two
Sun T5120's which during the same peak web registration period each run at
< 10% CPU utilization (we're running repcached on them, not JPA).
-Scott
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