We normally see about 12 requests / machine / sec during peak load. I agree that 64 bit should help by making it possible to use more RAM. We're currently running 32bit with 1.25 GB allocated to the JVM and often come within 10 - 15% of the available JVM RAM on single machines for short periods of time.
Do you find that you are under-utilizing the CPU in the 8 core machines? Any suggestions for particular JVM upgrades that have helped you in the past or do you think upgrades / config tweaks are very application specific? >As Dave said - 64bit will give you the biggest boost. Mainly because > you can setup massive memory allocations for the JVM. Our servers > each have 8Gb of memory with 4Gb setup for the JVM. > > More cores the better is the mantra, but we run 4 and 8 core servers > and really don't see much different between the two in performance. > > I'd stick with SCSI drives if you need a lot of read/write access. > > And yes certain JVM upgrades can boost the speed mainly because of the > bugs in earlier versions cause object creation to be very slow. > > How much load is your application seeing? Hard configuration and > scale will be affected by your applications load. > > > > Wil Genovese > > One man with courage makes a majority. > -Andrew Jackson > > A fine is a tax for doing wrong. A tax is a fine for doing well. > > On Mar 12, 2010, at 11:25 AM, John Foster wrote: > > > > > We are looking to speed up our application layer as much as possible. > We've pumped the DB up substantially and had great results. I realize > there are network, load balancer, memcache, etc and other ways than > the hardware to have impact, but we want to buy whatever will give us > some gain. > > > > Unfortunately, we didn't notice with a dual quad core server a ton > of impact in the past and didn't seem to be able to get the full > utilization, so we just stayed with multiple servers instead of fewer, > beefier servers. > > > > Will 64 bit and many cores be the best for CF 9? Or less cores at > higher clock? > > > > Does more memory help much? > > > > How about SSD hard drives for local source code? I wouldn't expect > that, but somebody seemed to suggest that somewhere. > > > > Does CF Enterprise make a big difference? > > > > Should we change the JVM to a faster one? What would that be? > > > > > > > > Thanks! > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:331741 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
