I believe we allocate 1024mb though we don't really need that much (the machines have like 8 gb or more). One thing we did find was that one of the two machines was running out of address space so we had to switch to the 64-bit JVM from the 32-bit. Not sure why it was happening exactly, and only to one machine.
On Wed, Apr 1, 2009 at 2:58 PM, Hanh Do <[email protected]> wrote: > 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 <[email protected]> > *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 > > > > ------------------------------ > Express your personality in color! Preview and select themes for Hotmail®. 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