Hello Friends, I've recently watched the peepcode on httperf and read various blog articles about performance testing web servers w/ httperf. My problem is that my mongrel apps all seem to be running just horribly slow. But since I'm the lone railser in my company I have no idea if this slowness is correct or I'm doing blatantly wrong with my server setups. My Test Setup: I'm testing by running httperf on a linux box with nothing else of significance on the box. Running httperf is it's sole purpose, for now. The app is running on a VM with 512mb mem, not sure of the cpu but it's the machine is less than a year old. I'm running Apache 2.2 proxying to 5 mongrels. I even installed the eventmachine gem but it didn't seem to do anything. The app is entirely behind ssl. I've created a special "hello_world" action that has sessions disabled, all it does is render(:text => 'hello world'). Unlike many others I've read about my best testing indicates about 10 replies/sec. Which just seems way too slow. Any thoughts/ideas would be greatly appreciated. A sample of my httperf output: andy@hst-25-134:~$ httperf --server intranet3 --ssl --uri /public/ hello_world --hog --num-conns 100 --rate 15 httperf --hog --client=0/1 --server=intranet3 --port=443 --uri=/public/ hello_world --rate=15 --send-buffer=4096 --recv-buffer=16384 --ssl -- num-conns=100 --num-calls=1 Maximum connect burst length: 1 Total: connections 100 requests 100 replies 100 test-duration 37.394 s Connection rate: 2.7 conn/s (373.9 ms/conn, <=100 concurrent connections) Connection time [ms]: min 9622.4 avg 24891.7 max 36704.4 median 27602.5 stddev 8464.1 Connection time [ms]: connect 2606.8 Connection length [replies/conn]: 1.000 Request rate: 2.7 req/s (373.9 ms/req) Request size [B]: 78.0 Reply rate [replies/s]: min 0.0 avg 2.1 max 6.2 stddev 2.3 (7 samples) Reply time [ms]: response 22283.5 transfer 1.4 Reply size [B]: header 226.0 content 11.0 footer 0.0 (total 237.0) Reply status: 1xx=0 2xx=100 3xx=0 4xx=0 5xx=0 CPU time [s]: user 3.95 system 33.44 (user 10.6% system 89.4% total 100.0%) Net I/O: 0.8 KB/s (0.0*10^6 bps) Errors: total 0 client-timo 0 socket-timo 0 connrefused 0 connreset 0 Errors: fd-unavail 0 addrunavail 0 ftab-full 0 other 0 Thanks, Andy Koch
on 2007-07-19 02:33
on 2007-07-20 00:17
I haven't read your full post yet Andy (I'm on my way out the door to work), but 5 mongrels, 512mb of ram.. you must be pretty close to choking the server down completely (swapping).