On 9 January 2011 16:20, Ralph Goers <ralph.go...@dslextreme.com> wrote: > Why did you post this to the commons dev list instead of http-components dev?
Oops, sorry! However, the timings might still be interesting for Commons components... > Ralph > > On Jan 9, 2011, at 7:32 AM, sebb wrote: > >> AbstractCookieSpec uses an unsynchronised HashMap, so is not thread-safe. >> >> AIUI, ConcurrentHashMap has much better performance than a >> synchronised HashMap - but of course we are not using synch here. >> >> A quick test using the code at [1] (1 thread, 1 VM) appears to show >> that the performance of CHM and HM is fairly similar: >> >> Map type: HashMap >> Runtime: 3000 >> Number of threads: 1 >> Write probability: 0.6 >> Remove probability: 0.02 >> Ops per second: 1260837.0 >> >> Map type: ConcurrentHashMap >> Runtime: 3000 >> Number of threads: 1 >> Write probability: 0.6 >> Remove probability: 0.02 >> Ops per second: 1313171.0 >> >> So I wonder if we should consider replacing HashMap with >> ConcurrentHashMap in Cookies and elsewhere in HttpClient? >> >> [1] >> http://unserializableone.blogspot.com/2007/04/performance-comparision-between.html >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org >> For additional commands, e-mail: dev-h...@commons.apache.org >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
