On Apr 13, 2:48 pm, Vyacheslav Egorov <[email protected]> wrote: > fib in "Node's main JS thread" case is a "local" function declaration, V8 > compiles recursive call as s faster) than call-function which uses separate > generic stub: > > ;;; @40: call-known-global. > 0x3c5d7c2c30d 109 48bff96d452dc6150000 REX.W movq rdi,0x15c62d456df9 > ;; object: 0x15c62d456df9 <JS Function fib> > 0x3c5d7c2c317 119 4c89e1 REX.W movq rcx,r12 > 0x3c5d7c2c31a 122 e881ffffff call 0 (0x3c5d7c2c2a0) ;; debug: > position 41 > ;; code: > OPTIMIZED_FUNCTION > > vs. > > ;;; @52: call-function. > 0x1e5a9c3a52fd 125 e85e46f6ff call 0x1e5a9c309960 ;; debug: > position 139 > ;; code: STUB, > CallFunctionStub, argc = 1 > > [call function stub is a complicated generic stub that can handle all kinds > of calls] > > -- > Vyacheslav Egorov > > > > > > > > On Thu, Apr 12, 2012 at 7:29 PM, mscdex <[email protected]> wrote: > > On Apr 12, 9:54 am, Tim Caswell <[email protected]> wrote: > > > What makes the main thread so slow in comparison? It's the same v8 > > right? > > > Here's something more interesting: > > >https://gist.github.com/2369318 > > > Threads_a_gogo JS thread -> 3039 (ms) 298607040 > > Node's main JS thread -> 4677 (ms) 298607040 > > Ratio: 1.54 times faster than main JS thread > > New, separate VM -> 3065 (ms) 298607040 > > Ratio: 1.01 times faster than new VM > > > -- > > Job Board:http://jobs.nodejs.org/ > > Posting guidelines: > >https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > > You received this message because you are subscribed to the Google > > Groups "nodejs" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/nodejs?hl=en?hl=en
Thanks for your analysis, Vyacheslav. So what can we do about it? It seems that in node all functions will be "local" functions because of the module system. Is it not possible to have an efficient stub for these guys? - Bert -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
