Jamie, So you are running JRUN/Multi-server? Is that correct? Does each instance have it's own JVM settings or do they all share the same JVM.config file? Also, if you are running JRUN multi-server the settings for the simultaneous threads available to JRUN is very important. It is set to 50 by default... But needs to be adjusted according to how many instances you are running and your hardware resources. Start with 5x the number of procs/cores + 10 or 15 as the starting point for JRUN, then 5x the number of procs/cores divided by the number of instances for simultaneous... That would be a starting point - but you will need to test. If you can't test then you will need to monitor and adjust in real time.... Not pretty. A multi-server setup is very complicated. It's a little scary running one without a staging environment.... A bit of the cart before the horse :)
-Mark -----Original Message----- From: Jamie Jackson [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 10, 2008 9:32 AM To: CF-Talk Subject: Re: Outdated Adobe Performance-Tuning Info Thanks for the link. I read through your and Steven's blog posts. However, something that complicates things (I think) is that our environment is like that of a web host: We have multiple CF instances per server, and in many cases, many sites per instance. It would be hard to do a real-world load test on this, I would think (aside from tinkering with production during peak hours). Also, CFMX *8* seems to have at least four different places where you can set a max requests value, so there are even more variables to contend with now. I think I'd have to defer to a better-informed person's guidelines as to what is a "middle of the road" starting value for these things. I wouldn't mind having the option of a single, more crude overall max request setting, actually. Further, my question about Windows-specific tuning recommendations still stands. I would guess that the Windows Server 2000 Adobe recommendations (including registry hacks to networking) would be applicable to 2003, but since I'm not an expert in this area, I wouldn't mind a sanity check there, either. By the way, here are some shorter URLs that will survive wrapping better: ColdFusion MX: Tips for performance and scalability http://www.adobe.com/go/tn_18540 Windows platform-specific performance settings http://www.adobe.com/go/tn_17277 Thanks again, Jamie On 9/10/08, Mark Kruger <[EMAIL PROTECTED]> wrote: > Jamie, > > Testing and experience are your best guides. I have a post on this > topic here.... > > > http://www.coldfusionmuse.com/index.cfm/2006/5/4/higher.simultaneous.r > equest > s > > > > -Mark > > > Mark A. Kruger, CFG, MCSE > (402) 408-3733 ext 105 > www.cfwebtools.com > www.coldfusionmuse.com > www.necfug.com > > > -----Original Message----- > From: Jamie Jackson [mailto:[EMAIL PROTECTED] > Sent: Wednesday, September 10, 2008 8:56 AM > To: CF-Talk > Subject: Outdated Adobe Performance-Tuning Info > > The following articles, from early 2006, provide some guidance as to > performance tuning CFMX on Windows. > > ColdFusion MX: Tips for performance and scalability > http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_18540 > > Windows platform-specific performance settings > > http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_17277&sli > ceId=2 > > However, they refer to outdated versions of CFMX, JVM, Windows, and > IIS. Are more recent versions of these documents available? If not, > can anyone comment on what guidelines, if any, have changed since then? > > One of the things I've noticed so far: > > "Simultaneous Requests. The simultaneous requests setting on the "Settings" > page of the ColdFusion Administrator has the largest impact on the > scalability characteristic of an application (performance under load). > This setting dictates how many threads will be used to simultaneously > process incoming requests. For most applications, a good starting > point for the optimal value for this setting is 3 per processor--a > dual processor machine could be set to 6 simultaneous requests. The > only way to find the optimal value for this setting is to test your > application under load with different values until you find which one provides the best performance under load." > > There is no single setting (that I've found) in the CFMX 8 > administrator, as it seems to have more granular settings (pertaining > to template, flash remoting, CFC function calls, etc.). Therefore, I > don't have any guidance as to what are good starting values for these settings. > > Thanks, > Jamie > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:312310 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
