I don't have the answer for you, but now your benchmark may be encountering something else that's not related to v8's performance.
You may be measuring how long it takes to load and instantiate the 64 bit binary, which is likely larger byte size. On Jan 31, 2013, at 2:49 PM, Dennis H <[email protected]> wrote: > Hi, > > May be it is not exact enough, I agree. However the delta is too big to > ignore and can be seen using time as well: > > (I removed the console.log and Date.now() from script) > > $ time node app.js > > real 0m0.087s > user 0m0.069s > sys 0m0.017s > > > $ time node64 app.js > > real 0m0.098s > user 0m0.080s > sys 0m0.017s > > On Thursday, January 31, 2013 2:12:28 PM UTC-8, mschwartz wrote: > I'm not sure it's reliable to use Date.now() for benchmarking purposes. > > > On Jan 31, 2013, at 2:01 PM, Dennis H <[email protected]> wrote: > >> Hi, >> >> I just tried some JS script on nodejs, which doesn't use any of nodejs APIs: >> >> var t1 = Date.now(); >> var arr = []; >> for (var i=0; i < 100000; i++) { >> arr[i] = (100 + i) + " bla "; >> } >> console.log('Time ' + (Date.now()-t1)); >> >> This turns out to consume 26ms on the 32 bit and 33ms on the 64 bit RHEL >> linux, which is 27% slower. >> >> Any idea for the reason and plans to improve? >> >> Thanks, >> Dennis >> >> -- >> -- >> v8-users mailing list >> [email protected] >> http://groups.google.com/group/v8-users >> --- >> You received this message because you are subscribed to the Google Groups >> "v8-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> > > > -- > -- > v8-users mailing list > [email protected] > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > -- -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
