On Sat, 2014-05-17 at 22:10 +0100, Daniel Feist wrote: > Sure, which jetty connector? Blocking is better because then test is more > about httpclient. With other connector jetty uses more cpu and has more > context switching. >
I used the same micro-benchmark as before, the same jetty connector, the same minimal HC config. I am really sorry but I cannot reproduce any significant difference between minimal HC and the defaul one with performance tuning, and more importantly I see no reason for that difference to be there. Let's see what kind of reasons you are going to get and then proceed from there. Oleg > Dan > On 17 May 2014 20:15, "Oleg Kalnichevski" <ol...@apache.org> wrote: > > > On Sat, 2014-05-17 at 00:13 +0100, Daniel Feist wrote: > > > > Could you please find out if this difference is consistent regardless > > of > > > > the CPU core number used by the system? > > > > > > Done, see other email I didn't record all figures, but did run > > > multiple times and records differences. > > > > > > > Honestly, there is really no significant differences between the two I > > > > can think of. I cannot completely rule out a possibility of some green > > > > men from Mars randomly inserting Thread#sleep() statements but I > > > > consider it unlikely. I'll see if I can reproduce the issue locally. > > > > > > I couldn't imagine a difference but in testing on 32-core with > > > BlockingChannelConnector I got: > > > > > > - 3.1 | 75 K TPS > > > - 4.3.3 Minimal / 4.2.6 | 74 K TPS > > > - 4.3.3 DefultHttpClient | 72 K TPS > > > - 4.3.3 Builder (from your test) | 68 K TPS > > > > > > The difference is small, but it's an interesting problem, working out > > > whats going on. 74 vs 75 is irrelevant, but 68 vs. 75 is bigger. > > > > > > >> I'm still not seeing a major issue with the contention i mentioned i'd > > > >> seen in profiler, be an interesting experiment to test performance > > > >> with 500 treads, both with/without proxies though. > > > >> > > > > > > > > I'll give it a shot this weekend. > > > > > > Not sure you'll see any difference is cpu is constrained. If you do do > > > it, I can test on 32-core box for you. > > > > > > > Daniel > > > > I removed all dynamic proxies and got approximately 10% better > > performance with my two CPU core PC. > > > > Could you please build HttpClient from my private experimental branch at > > github and re-run your tests? > > > > https://github.com/ok2c/httpclient/tree/dyn_proxies > > > > https://github.com/ok2c/httpclient/commit/246095522504ddffe07caf70db4c051fa0d31872 > > > > Cheers > > > > Oleg > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org For additional commands, e-mail: httpclient-users-h...@hc.apache.org
