Not to beat a dead horse, but one last question to round this off: How much memory are you allocating to the repcached daemon on each box ? (testing repcached right now... Are you monitoring that by chance with eg. cacti ?)
Thanks, Johan ----- Original Message ----- From: Scott Battaglia To: [email protected] Sent: Wednesday, April 01, 2009 12:11 PM Subject: Re: [cas-user] system requirements for CAS 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 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®. See how. -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-user -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-user ---------------------------------------------------------------------- Internet Explorer 8 – Get your Hotmail Accelerated. 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