Mid-tier 7.1 has other issues with the persistent cache, but that's another topic. I would agree that you are seeing some sort of recaching activity on the part of the 6.3 mid-tier.
When mid-tier 7.x prefetches and caches an ITSM 7 application (or most of its forms), we always see about 25-35 minutes of 35% CPU activity on the AR server, with somewhat less load on the mid-tier server - more like 20% load and in smaller peaks that are converse to the AR Server load. The load on the db server during this process is perceivable, but very low - about 5%. During that time period even User Tool access to the AR Server is definitely degraded. These are all Tomcat-based mid-tiers on 2003 Enterprise servers with more RAM and CPU than 32-bit BMC software knows what to do with. Christopher Strauss, Ph.D. Remedy Database Administrator University of North Texas Computing Center http://itsm.unt.edu/ > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[EMAIL PROTECTED] On Behalf Of L. J. Head > Sent: Friday, October 12, 2007 1:31 PM > To: [email protected] > Subject: Re: w3wp.exe pegs CPU randomly - ARS 6.3 > > Are you running ITSM?...this sounds like the Mid-Tier caching > itself the first time someone access the app in the > morning...if I'm not mistaken 6.3 Mid-tier will clear it's > cache of unused items during down periods (overnight)...and > the first person to request the page will get a delay while > it's caching. If this is the case...then a properly > configured 7.1 mid-tier should alleviate your issues as 7.1 > has persistent cache capabilities. > > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[EMAIL PROTECTED] On Behalf Of Julie Rockwood > Sent: Friday, October 12, 2007 12:23 PM > To: [email protected] > Subject: w3wp.exe pegs CPU randomly - ARS 6.3 > > Hello list, > Calling all Win 2003 Remedy geeks. We are having production > problems on our win 2003, ARS 6.3 patch 14 mid-tier server. > Below is an email from my system administrator describing the > problem. If anyone has any ideas, we would sure appreciate it. > Julie > > I manage the server instances for our ARS team which are the > following: > > Mid-tier: W2K3/IIS6.0/ServletExec 5.0/ARS 6.3 - VMware > Application: W2K3/ARS 6.3 - VMware > Database: Oracle 9i on AIX 5.3.x > > Anyway, I'm seeing the w3wp peg the CPU on the mid-tier > almost every morning, rendering the web server inoperable > (even for static html rendering). If I temporarily remove > the ServletExec ISAPI filter, static html rendering is fine > and CPU utilization is normal. Re- insert the filter and > perform an iisreset - the same behavior occurs. > > If I wait about 15-20 minutes (this problem occurs almost > daily at 6:30 so customers aren't complaining yet) the > problem clears itself out and everything is working fine. If > I monkey with it (iisresets, rebooting, etc) the problem > perpetuates itself even longer. > > We're moving towards a ARS 7.1 install on new infrastructure, > so I'm hoping this will fix it - but in the meantime if > anyone has run into this (and possibly fixed it) any pointers > would be greatly appreciated. > > Thanks! > > ______________________________________________________________ > ______________ > ___ > UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > ARSlist:"Where the Answers Are" > > ______________________________________________________________ > _________________ > UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > ARSlist:"Where the Answers Are" > _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:"Where the Answers Are"
