[thelist] ColdFusion performance

[Daniel J. Cody]

Hola -

Linux2.4.7, apache 1.3.20, CF4.5.2 800Mhz P3, 1GB RAM, 15k cheetah SCSI 
drives RAID1

I'm benchmarking a CF page with ab(apache bench) that has about 15 
queries and takes ~800msecs to complete when run by itself..

I've run about 10 different combinations of benchmarks(not by any means 
scientific) varying the concurrency level, number of requests, etc. e.g. 
2000 requests with 20 concurrent connections, 500 requests with 5 
concurrent connections, 1000 reqs with 15 cc's and so on..

My question is, has anyone else tried similar benchmarks against their 
CF systems? If so, what did you find? Regardless of what combination of 
concurrent connections and reqs I use, I'm finding that CF hits a 
ceiling at about 3.25 requests/second and ends up taking about 6000msec 
for the last connection..

Not that thats *bad* mind you, just wondering what - if anything - other 
people have seen.  I'm not even seeing the DB(on a seperatle, equally 
buff machine connected via fiber) go above 30% CPU usage or using any 
more memory(which i would expect), so I have strong feeling its not the 
DB CF is waiting on ..

I understand CF5 is supposed to be much 'faster', especially on Linux, 
but haven't really seen anything technical to back this up yet..

Any insights or similar stories would be appreciated :)

.djc.