Re: Mid-tier prefetch scripts
I second the Tomcat performance vote. It's noticably faster (even using Apache and mod_jk) than IIS/SE(AS) even without using precache/fetch. And compared to versions 5/6 it flies. Chris - you don't mention what environment you're operating in? Our web boxes are Win2k3 2x3.8GHz dual core xeon with 3GB of ram. -- Tony Worthington [EMAIL PROTECTED] 262-703-5911 Axton [EMAIL PROTECTED] Sent by: Action Request System discussion list(ARSList) arslist@ARSLIST.ORG 01/19/2007 08:17 AM Please respond to arslist@ARSLIST.ORG To arslist@ARSLIST.ORG cc Subject Re: Mid-tier prefetch scripts ** I was happy with the mid-tier performance using jboss or tomcat with the latest 1.5 jdk, but people here complain about performance when using IBM WebSphere 6 with the IBM 1.4 jdk. Axton On 1/19/07, Chris Akens [EMAIL PROTECTED] wrote: From what I understand, the mid-tier pre-caching is actually done on a unique permission group list basis. Therefore you would want to pre-cache with an account that has the same permissions as the majority of your users. I have not used the pre-cache functionality that is included as part of 7.0; but am interested in how it takes into account the different permission group combinations. Any insight into this matter would be appreciated. I have been less than impressed with the mid-tier v7 thus far to say the least. Any suggestions on tuning the mid-tier for performance? ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are __20060125___This posting was submitted with HTML in it___ CONFIDENTIALITY NOTICE: This is a transmission from Kohl's Department Stores, Inc. and may contain information which is confidential and proprietary. If you are not the addressee, any disclosure, copying or distribution or use of the contents of this message is expressly prohibited. If you have received this transmission in error, please destroy it and notify us immediately at 262-703-7000. CAUTION: Internet and e-mail communications are Kohl's property and Kohl's reserves the right to retrieve and read any message created, sent and received. Kohl's reserves the right to monitor messages to or from authorized Kohl's Associates at any time without any further consent. ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are
Re: Mid-tier prefetch scripts
Chris also did not define what less than impressed means either. What kind of performance are you seeing that is not impressing you? (sub 60 second form open? sub 10 second form open? All forms or just some forms?) -- Carey Matthew Black Remedy Skilled Professional (RSP) ARS = Action Request System(Remedy) Love, then teach Solution = People + Process + Tools Fast, Accurate, Cheap Pick two. On 1/19/07, Tony Worthington [EMAIL PROTECTED] wrote: I second the Tomcat performance vote. It's noticably faster (even using Apache and mod_jk) than IIS/SE(AS) even without using precache/fetch. And compared to versions 5/6 it flies. Chris - you don't mention what environment you're operating in? Our web boxes are Win2k3 2x3.8GHz dual core xeon with 3GB of ram. -- Tony Worthington [EMAIL PROTECTED] 262-703-5911 ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are
Re: Mid-tier prefetch scripts
My response times were measured on both the production server set that I just built out, and development set which is identical except for mid-tier: Web - Win2K3 R2 Enterprise x64 on HP DL380 G5 with two 4-core Xeons and 12 gb RAM Mid-tier 7.0.01 on Tomcat app server AND Tomcat web, JDK 1.4.2_13 - Tomcat has memory pool from 512 to 1536 defined The development mid-tier is identical except that the server is Win2K3 Ent x86 on a DL-380 with two 3.4 ghz Xeons and 6 gb RAM ARS - Win2K3 Enterprise x64 on HP DL385 with two 2-core Opterons and 10 gb RAM DB - Win2K3 Enterprise x64 and SQL Server 2005 x64 on HP DL385 with two 2-core Opterons and 10 gb RAM (SQL Server grabs 8 gb RAM) Client - WinXP Pro and IE 7 on 3ghz PC with 1 gb RAM The long lag times to load non-prefetched forms (1:30 for Change console, 1:40 for New Incident opened from Overview console) tells me that basic mid-tier 7 architecture still leaves a lot to be desired. Almost all of the sustained CPU load when pre-fetching objects and loading a form for the first time is on the AR server, which sits at 30-35% total CPU for up to 1 to 1.5 minutes in the worst cases; one CPU will stay at 75%, one at 50%, one at 25%. The CPU traces on the mid-tier servers peak at 20% intermittently on several processors - usually 2 of them. There is usually a single grab from the db server - one spike on one CPU, or no trace at all in some cases! Less than happy??? Any time you perform an operation for the first time, like search for a customer from a new ticket, you will wish you were back on ITSM 5.5 and mid-tier 5.1.2 when it comes to performance. It is not a user experience that I want my IT staff to have to live with - who do you know that will consider it acceptable to click on a link to open a console or form and then stare at a blank, white screen for 1 and a half minutes? Nobody here! All response times _after_ forms have loaded once, either prefetched or not, were very fast - in the 1 to 2 seconds range. It's that first impression that is going to be a killer. It even occurs on little dialog boxes, like the selection box to Create a request from the Overview console, or search for a customer. Each new form or dialog that you invoke for the first time has a long, pregnant pause before it displays - especially if it was not included in a prefetch. Christopher Strauss, Ph.D. Remedy Database Administrator University of North Texas Computing Center http://remedy.unt.edu/helpdesk/ -Original Message- From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Tony Worthington Sent: Friday, January 19, 2007 8:28 AM To: arslist@ARSLIST.ORG Subject: Re: Mid-tier prefetch scripts I second the Tomcat performance vote. It's noticably faster (even using Apache and mod_jk) than IIS/SE(AS) even without using precache/fetch. And compared to versions 5/6 it flies. Chris - you don't mention what environment you're operating in? Our web boxes are Win2k3 2x3.8GHz dual core xeon with 3GB of ram. -- Tony Worthington [EMAIL PROTECTED] 262-703-5911 Axton [EMAIL PROTECTED] Sent by: Action Request System discussion list(ARSList) arslist@ARSLIST.ORG 01/19/2007 08:17 AM Please respond to arslist@ARSLIST.ORG To arslist@ARSLIST.ORG cc Subject Re: Mid-tier prefetch scripts ** I was happy with the mid-tier performance using jboss or tomcat with the latest 1.5 jdk, but people here complain about performance when using IBM WebSphere 6 with the IBM 1.4 jdk. Axton On 1/19/07, Chris Akens [EMAIL PROTECTED] wrote: From what I understand, the mid-tier pre-caching is actually done on a unique permission group list basis. Therefore you would want to pre-cache with an account that has the same permissions as the majority of your users. I have not used the pre-cache functionality that is included as part of 7.0; but am interested in how it takes into account the different permission group combinations. Any insight into this matter would be appreciated. I have been less than impressed with the mid-tier v7 thus far to say the least. Any suggestions on tuning the mid-tier for performance? ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are __20060125___This posting was submitted with HTML in it___ CONFIDENTIALITY NOTICE: This is a transmission from Kohl's Department Stores, Inc. and may contain information which is confidential and proprietary. If you are not the addressee, any disclosure, copying or distribution or use of the contents of this message is expressly prohibited. If you have received this transmission in error, please destroy it and notify us immediately at 262-703-7000. CAUTION: Internet and e-mail communications are Kohl's property and Kohl's reserves the right to retrieve and read any message created, sent and received. Kohl's reserves the right to monitor
Re: Mid-tier prefetch scripts
I don't disagree that the initial rendering is quite slow. And it sucks that the only solution is to either prefetch via a perl/whatever script, or use the xml midtier method. My point was more towards post-initial-form/view-load (cached) performance... Now if there was a script that dumped every web viewable form into that prefetch xml script... (we reboot weekly) :-) -- Tony Worthington [EMAIL PROTECTED] 262-703-5911 strauss [EMAIL PROTECTED] Sent by: Action Request System discussion list(ARSList) arslist@ARSLIST.ORG 01/19/2007 12:03 PM Please respond to arslist@ARSLIST.ORG To arslist@ARSLIST.ORG cc Subject Re: Mid-tier prefetch scripts My response times were measured on both the production server set that I just built out, and development set which is identical except for mid-tier: Web - Win2K3 R2 Enterprise x64 on HP DL380 G5 with two 4-core Xeons and 12 gb RAM Mid-tier 7.0.01 on Tomcat app server AND Tomcat web, JDK 1.4.2_13 - Tomcat has memory pool from 512 to 1536 defined The development mid-tier is identical except that the server is Win2K3 Ent x86 on a DL-380 with two 3.4 ghz Xeons and 6 gb RAM ARS - Win2K3 Enterprise x64 on HP DL385 with two 2-core Opterons and 10 gb RAM DB - Win2K3 Enterprise x64 and SQL Server 2005 x64 on HP DL385 with two 2-core Opterons and 10 gb RAM (SQL Server grabs 8 gb RAM) Client - WinXP Pro and IE 7 on 3ghz PC with 1 gb RAM The long lag times to load non-prefetched forms (1:30 for Change console, 1:40 for New Incident opened from Overview console) tells me that basic mid-tier 7 architecture still leaves a lot to be desired. Almost all of the sustained CPU load when pre-fetching objects and loading a form for the first time is on the AR server, which sits at 30-35% total CPU for up to 1 to 1.5 minutes in the worst cases; one CPU will stay at 75%, one at 50%, one at 25%. The CPU traces on the mid-tier servers peak at 20% intermittently on several processors - usually 2 of them. There is usually a single grab from the db server - one spike on one CPU, or no trace at all in some cases! Less than happy??? Any time you perform an operation for the first time, like search for a customer from a new ticket, you will wish you were back on ITSM 5.5 and mid-tier 5.1.2 when it comes to performance. It is not a user experience that I want my IT staff to have to live with - who do you know that will consider it acceptable to click on a link to open a console or form and then stare at a blank, white screen for 1 and a half minutes? Nobody here! All response times _after_ forms have loaded once, either prefetched or not, were very fast - in the 1 to 2 seconds range. It's that first impression that is going to be a killer. It even occurs on little dialog boxes, like the selection box to Create a request from the Overview console, or search for a customer. Each new form or dialog that you invoke for the first time has a long, pregnant pause before it displays - especially if it was not included in a prefetch. Christopher Strauss, Ph.D. Remedy Database Administrator University of North Texas Computing Center http://remedy.unt.edu/helpdesk/ -Original Message- From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Tony Worthington Sent: Friday, January 19, 2007 8:28 AM To: arslist@ARSLIST.ORG Subject: Re: Mid-tier prefetch scripts I second the Tomcat performance vote. It's noticably faster (even using Apache and mod_jk) than IIS/SE(AS) even without using precache/fetch. And compared to versions 5/6 it flies. Chris - you don't mention what environment you're operating in? Our web boxes are Win2k3 2x3.8GHz dual core xeon with 3GB of ram. -- Tony Worthington [EMAIL PROTECTED] 262-703-5911 Axton [EMAIL PROTECTED] Sent by: Action Request System discussion list(ARSList) arslist@ARSLIST.ORG 01/19/2007 08:17 AM Please respond to arslist@ARSLIST.ORG To arslist@ARSLIST.ORG cc Subject Re: Mid-tier prefetch scripts ** I was happy with the mid-tier performance using jboss or tomcat with the latest 1.5 jdk, but people here complain about performance when using IBM WebSphere 6 with the IBM 1.4 jdk. Axton On 1/19/07, Chris Akens [EMAIL PROTECTED] wrote: From what I understand, the mid-tier pre-caching is actually done on a unique permission group list basis. Therefore you would want to pre-cache with an account that has the same permissions as the majority of your users. I have not used the pre-cache functionality that is included as part of 7.0; but am interested in how it takes into account the different permission group combinations. Any insight into this matter would be appreciated. I have been less than impressed with the mid-tier v7 thus far to say the least. Any suggestions on tuning the mid-tier for performance? ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers
Mid-tier prefetch scripts
Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier (prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700; prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that difference varies based on who is logging in - the script was run with Demo, tests were with a support staff login (AREA authenticated) and then with the appadmin account, which was slower: Console IncidentChange Problem Overview Requester Not Prefetched load time 0:39 1:35 0:25 0:47 0:26 Prefetched, 1st time load 0:04 0:22 0:04 0:27 0:08 (same, but different user)0:16 0:53 0:12 0:08 0:29 All subsequent loadings 0:02 0:02 0:02 0:02 0:01 Loading forms from the consoles also differs depending on whether the form is part of the same application that the console is in: FormNew Incident from Incident Console New Incident from Overview Console Not Prefetched load time0:24 1:40 Prefetched, 1st time load 0:06 0:04 All subsequent loadings 0:03 0:03 I now believe that this utility is an essential part of any mid-tier/ITSM 7.x installation, since the load times measured for initial ITSM 7 form access are clearly unacceptable. Prefetch will need to be a lot better documented and understood before that will be possible, so please share any experience that you might have with it. Christopher Strauss, Ph.D. Remedy Database Administrator University of North Texas Computing Center http://remedy.unt.edu/helpdesk/ ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are
Re: Mid-tier prefetch scripts
Is this only for ARS/Mid Tier 7.x and ITSM 7.x ? The only prefetch script I have seen is a perl script not anything in xml. I will say that with the perl script and my testing(ITSM 6 and ARS 6.3), load times really depended on privileges of the user that was used to authenticate to the AR System in the script. Meaning if I used an Admin login in the script the admin views loaded quicker than a view a support person would receive on initial load of the view. I experienced similar load times using the perl script in ARS 6.3, but my runtime of the perl script was shorter, I wasn't loading as many forms as you have. I only ran the script on requester views for self service. Kyle strauss wrote: Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier (prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700; prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that difference varies based on who is logging in - the script was run with Demo, tests were with a support staff login (AREA authenticated) and then with the appadmin account, which was slower: Console IncidentChange Problem Overview Requester Not Prefetched load time 0:39 1:35 0:25 0:47 0:26 Prefetched, 1st time load 0:04 0:22 0:04 0:27 0:08 (same, but different user)0:16 0:53 0:12 0:08 0:29 All subsequent loadings 0:02 0:02 0:02 0:02 0:01 Loading forms from the consoles also differs depending on whether the form is part of the same application that the console is in: FormNew Incident from Incident Console New Incident from Overview Console Not Prefetched load time0:24 1:40 Prefetched, 1st time load 0:06 0:04 All subsequent loadings 0:03 0:03 I now believe that this utility is an essential part of any mid-tier/ITSM 7.x installation, since the load times measured for initial ITSM 7 form access are clearly unacceptable. Prefetch will need to be a lot better documented and understood before that will be possible, so please share any experience that you might have with it. Christopher Strauss, Ph.D. Remedy Database Administrator University of North Texas Computing Center
Re: Mid-tier prefetch scripts
I was also only aware of the Perl prefetch script. Didn't realize there was a new XML-based one for Mid-Tier 7.x. Is this available for download somewhere or do I need to contact Support? I have to say that the Perl script never worked very well and like Kyle said, seemed to only speed up load times for the user that is was executed by but for no one else. It sounds like that has been largely corrected but not completely. Every little bit helps though! Thanks, Michael Gould US House of Representatives On 1/18/07, Kyle Whitley [EMAIL PROTECTED] wrote: Is this only for ARS/Mid Tier 7.x and ITSM 7.x ? The only prefetch script I have seen is a perl script not anything in xml. I will say that with the perl script and my testing(ITSM 6 and ARS 6.3), load times really depended on privileges of the user that was used to authenticate to the AR System in the script. Meaning if I used an Admin login in the script the admin views loaded quicker than a view a support person would receive on initial load of the view. I experienced similar load times using the perl script in ARS 6.3, but my runtime of the perl script was shorter, I wasn't loading as many forms as you have. I only ran the script on requester views for self service. Kyle strauss wrote: Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier (prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700; prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that difference varies based on who is logging in - the script was run with Demo, tests were with a support staff login (AREA authenticated) and then with the appadmin account, which was slower: Console IncidentChange Problem Overview Requester Not Prefetched load time 0:39 1:35 0:25 0:47 0:26 Prefetched, 1st time load 0:04 0:22 0:04 0:27 0:08 (same, but different user)0:16 0:53 0:12 0:08 0:29 All subsequent loadings 0:02 0:02 0:02 0:02 0:01 Loading forms from the consoles also differs depending on whether the form is part of the same application that the console is in: Form
Re: Mid-tier prefetch scripts
I believe the prefetch.xml is driven by the permissions of the account used to perform the prefetch. That's to say that using an admin account to perform the prefetch will not have as much of a benefit for non-permission users accessing the system. I configured our servers to use a no-permission account to perform the prefetch, since that is the permission base of our end users that access the mid-tier interface. Axton Grams On 1/18/07, Kyle Whitley [EMAIL PROTECTED] wrote: Is this only for ARS/Mid Tier 7.x and ITSM 7.x ? The only prefetch script I have seen is a perl script not anything in xml. I will say that with the perl script and my testing(ITSM 6 and ARS 6.3), load times really depended on privileges of the user that was used to authenticate to the AR System in the script. Meaning if I used an Admin login in the script the admin views loaded quicker than a view a support person would receive on initial load of the view. I experienced similar load times using the perl script in ARS 6.3, but my runtime of the perl script was shorter, I wasn't loading as many forms as you have. I only ran the script on requester views for self service. Kyle strauss wrote: Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier (prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700; prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that difference varies based on who is logging in - the script was run with Demo, tests were with a support staff login (AREA authenticated) and then with the appadmin account, which was slower: Console IncidentChange Problem Overview Requester Not Prefetched load time 0:39 1:35 0:25 0:47 0:26 Prefetched, 1st time load 0:04 0:22 0:04 0:27 0:08 (same, but different user)0:16 0:53 0:12 0:08 0:29 All subsequent loadings 0:02 0:02 0:02 0:02 0:01 Loading forms from the consoles also differs depending on whether the form is part of the same application that the console is in: FormNew Incident from Incident Console New Incident from Overview Console Not
Re: Mid-tier prefetch scripts
It's included with mid-tier 7.x Axton Grams On 1/18/07, Mike Gould [EMAIL PROTECTED] wrote: ** I was also only aware of the Perl prefetch script. Didn't realize there was a new XML-based one for Mid-Tier 7.x. Is this available for download somewhere or do I need to contact Support? I have to say that the Perl script never worked very well and like Kyle said, seemed to only speed up load times for the user that is was executed by but for no one else. It sounds like that has been largely corrected but not completely. Every little bit helps though! Thanks, Michael Gould US House of Representatives On 1/18/07, Kyle Whitley [EMAIL PROTECTED] wrote: Is this only for ARS/Mid Tier 7.x and ITSM 7.x ? The only prefetch script I have seen is a perl script not anything in xml. I will say that with the perl script and my testing(ITSM 6 and ARS 6.3), load times really depended on privileges of the user that was used to authenticate to the AR System in the script. Meaning if I used an Admin login in the script the admin views loaded quicker than a view a support person would receive on initial load of the view. I experienced similar load times using the perl script in ARS 6.3, but my runtime of the perl script was shorter, I wasn't loading as many forms as you have. I only ran the script on requester views for self service. Kyle strauss wrote: Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier ( prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700 prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-name remedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that difference varies based on who is logging in - the script was run with Demo, tests were with a support staff login (AREA authenticated) and then with the appadmin account, which was slower: Console IncidentChange Problem Overview Requester Not Prefetched load time 0:39 1:35 0:25 0:47 0:26 Prefetched, 1st time load 0:04 0:22 0:04 0:27 0:08 (same, but different user)0:16 0:53 0:12 0:08 0:29 All subsequent loadings
Re: Mid-tier prefetch scripts
The perl script never really worked well for me, and like Axton said I had to use a no-permission user to get my requester/self service views to cache correctly. Guess I need to upgrade my midtier. Kyle Axton wrote: ** I believe the prefetch.xml is driven by the permissions of the account used to perform the prefetch. That's to say that using an admin account to perform the prefetch will not have as much of a benefit for non-permission users accessing the system. I configured our servers to use a no-permission account to perform the prefetch, since that is the permission base of our end users that access the mid-tier interface. Axton Grams On 1/18/07, *Kyle Whitley* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Is this only for ARS/Mid Tier 7.x and ITSM 7.x ? The only prefetch script I have seen is a perl script not anything in xml. I will say that with the perl script and my testing(ITSM 6 and ARS 6.3), load times really depended on privileges of the user that was used to authenticate to the AR System in the script. Meaning if I used an Admin login in the script the admin views loaded quicker than a view a support person would receive on initial load of the view. I experienced similar load times using the perl script in ARS 6.3, but my runtime of the perl script was shorter, I wasn't loading as many forms as you have. I only ran the script on requester views for self service. Kyle strauss wrote: Does anyone think that they have figured out all of the ins and outs of using the prefetch script with mid-tier ( prefetchConfig.xml)?? Since this is a largely undocumented utility that BMC Remedy Support does not fully understand, I'll take any hints that others have already figured out. The latest script I am trying to use for ITSM 7.0 looks like this: ?xml version=1.0 encoding=UTF-8? midtier-prefetch-config xmlns=http://www.bmc.com/remedy/midtier/700 http://www.bmc.com/remedy/midtier/700 prefetch-user user-nameDemo/user-name localeen_US/locale prefetch-server server-name remedy6.ars.unt.edu http://remedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Incident Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management/app-name /prefetch-app prefetch-app app-nameRemedy Change Management Dashboard/app-name /prefetch-app prefetch-app app-nameRemedy Problem Management/app-name /prefetch-app prefetch-app app-nameRemedy Requester Console/app-name /prefetch-app prefetch-app app-nameRemedy Task Management/app-name /prefetch-app prefetch-app app-nameRemedy Reporting Console/app-name /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu http://remedy6.ars.unt.edu/server-name prefetch-app app-nameRemedy Foundation Elements/app-name prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form /prefetch-app /prefetch-server prefetch-server server-nameremedy6.ars.unt.edu http://remedy6.ars.unt.edu/server-name prefetch-form form-nameHome Page/form-name /prefetch-form prefetch-form form-nameSHR:OverviewConsole/form-name /prefetch-form prefetch-form form-nameHPD:Help Desk/form-name /prefetch-form prefetch-form form-nameCHG:Infrastructure Change/form-name /prefetch-form prefetch-form form-namePBM:Known Error/form-name /prefetch-form prefetch-form form-namePBM:Problem Investigation/form-name /prefetch-form prefetch-form form-namePBM:Solution Database/form-name /prefetch-form prefetch-form form-nameTMS:Task/form-name /prefetch-form /prefetch-server /prefetch-user /midtier-prefetch-config I am not convinced that everything in the script is in fact prefetching yet. It takes over 30 minutes for prefetch to run after the mid-tier server starts (the mid-tier shows little CPU usage but the AR Server sits at 30% utilization throughout!), but the difference in performance for the first time a form loads can be huge. Also, that
Re: Mid-tier prefetch scripts
From what I understand, the mid-tier pre-caching is actually done on a unique permission group list basis. Therefore you would want to pre-cache with an account that has the same permissions as the majority of your users. I have not used the pre-cache functionality that is included as part of 7.0; but am interested in how it takes into account the different permission group combinations. Any insight into this matter would be appreciated. I have been less than impressed with the mid-tier v7 thus far to say the least. Any suggestions on tuning the mid-tier for performance? ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:Where the Answers Are
