On Fri, Mar 16, 2012 at 19:57, Patrick Quinn <[email protected]> wrote: > I've been profiling my code and the most expensive function reported > is the C++ function _chmod. It appears about 4 times as often as my > most expensive Javascript function. > > My program doesn't use the filesystem. It's very simple. It prints > one line to the console and only has 2 "require" calls that aren't my > code: underscore, and EventEmitter2 (require("events") exhibits the > same problem). > > I've done some grepping through node and its dependencies, and I'm > scratching my head. _chmod is apparently called by many functions and > I don't see anything in common between them. > > Is this an internal node.js thing? Is it anything to be concerned > about or is there anything I can do to prevent it? Any insight would > be greatly appreciated. > > Thanks! > > Example: > > 499 8.8% _chmod > 69 13.8% LazyCompile: *Player.draw /my/project/path/ > player.js:192 > 38 55.1% Function: Player.doCleanup /my/project/path/ > player.js:119 > 36 94.7% LazyCompile: *Player.doPlay /my/project/path/ > player.js:99 > 36 100.0% LazyCompile: *Player.onPlayChosen /my/project/ > path/player.js:168 > 36 100.0% LazyCompile: *EventEmitter.emit /my/project/ > path/node_modules/eventemitter2/lib/eventemitter2.js:242 > > Player.draw /my/project/path/player.js:192 is as follows > > Player.prototype.draw = function(n) { > var card, drawn, _i, _len; > drawn = this.take(n); > for (_i = 0, _len = drawn.length; _i < _len; _i++) { > card = drawn[_i]; > this.hand[card.id] = card; > } > return drawn; > }; > > this.take(n) returns an array. this.hand is an object initialized > using curly brackets. card.id is an integer.
On what platform is this? _chmod looks like a function from the Windows CRT. -- 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
