I believe we're allocating 1GB to repcached, and I don't know what we're using to monitor it.
-Scott On Fri, Apr 3, 2009 at 12:57 PM, Johan Reinalda < [email protected]> wrote: > 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 <[email protected]> > *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 <[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! 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