node-uuid v crazy gist

JavaScript performance comparison

Revision 18 of this test case created

Info

Compares

node-uuid - https://github.com/broofa/node-uuid

with

crazy gist - https://gist.github.com/jed/982883

with

js random to String

Preparation code

<script>
(function(){var _global=this;var _rng;if(typeof _global.require=="function"){try{var _rb=_global.require("crypto").randomBytes;_rng=_rb&&function(){return _rb(16)}}catch(e){}}if(!_rng&&_global.crypto&&crypto.getRandomValues){var _rnds8=new Uint8Array(16);_rng=function whatwgRNG(){crypto.getRandomValues(_rnds8);return _rnds8}}if(!_rng){var _rnds=new Array(16);_rng=function(){for(var i=0,r;i<16;i++){if((i&3)===0)r=Math.random()*4294967296;_rnds[i]=r>>>((i&3)<<3)&255}return _rnds}}var BufferClass=typeof _global.Buffer=="function"?_global.Buffer:Array;var _byteToHex=[];var _hexToByte={};for(var i=0;i<256;i++){_byteToHex[i]=(i+256).toString(16).substr(1);_hexToByte[_byteToHex[i]]=i}function parse(s,buf,offset){var i=buf&&offset||0,ii=0;buf=buf||[];s.toLowerCase().replace(/[0-9a-f]{2}/g,function(oct){if(ii<16){buf[i+ii++]=_hexToByte[oct]}});while(ii<16){buf[i+ii++]=0}return buf}function unparse(buf,offset){var i=offset||0,bth=_byteToHex;return bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]+"-"+bth[buf[i++]]+bth[buf[i++]]+"-"+bth[buf[i++]]+bth[buf[i++]]+"-"+bth[buf[i++]]+bth[buf[i++]]+"-"+bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]+bth[buf[i++]]}var _seedBytes=_rng();var _nodeId=[_seedBytes[0]|1,_seedBytes[1],_seedBytes[2],_seedBytes[3],_seedBytes[4],_seedBytes[5]];var _clockseq=(_seedBytes[6]<<8|_seedBytes[7])&16383;var _lastMSecs=0,_lastNSecs=0;function v1(options,buf,offset){var i=buf&&offset||0;var b=buf||[];options=options||{};var clockseq=options.clockseq!=null?options.clockseq:_clockseq;var msecs=options.msecs!=null?options.msecs:(new Date).getTime();var nsecs=options.nsecs!=null?options.nsecs:_lastNSecs+1;var dt=msecs-_lastMSecs+(nsecs-_lastNSecs)/1e4;if(dt<0&&options.clockseq==null){clockseq=clockseq+1&16383}if((dt<0||msecs>_lastMSecs)&&options.nsecs==null){nsecs=0}if(nsecs>=1e4){throw new Error("uuid.v1(): Can't create more than 10M uuids/sec")}_lastMSecs=msecs;_lastNSecs=nsecs;_clockseq=clockseq;msecs+=122192928e5;var tl=((msecs&268435455)*1e4+nsecs)%4294967296;b[i++]=tl>>>24&255;b[i++]=tl>>>16&255;b[i++]=tl>>>8&255;b[i++]=tl&255;var tmh=msecs/4294967296*1e4&268435455;b[i++]=tmh>>>8&255;b[i++]=tmh&255;b[i++]=tmh>>>24&15|16;b[i++]=tmh>>>16&255;b[i++]=clockseq>>>8|128;b[i++]=clockseq&255;var node=options.node||_nodeId;for(var n=0;n<6;n++){b[i+n]=node[n]}return buf?buf:unparse(b)}function v4(options,buf,offset){var i=buf&&offset||0;if(typeof options=="string"){buf=options=="binary"?new BufferClass(16):null;options=null}options=options||{};var rnds=options.random||(options.rng||_rng)();rnds[6]=rnds[6]&15|64;rnds[8]=rnds[8]&63|128;if(buf){for(var ii=0;ii<16;ii++){buf[i+ii]=rnds[ii]}}return buf||unparse(rnds)}var uuid=v4;uuid.v1=v1;uuid.v4=v4;uuid.parse=parse;uuid.unparse=unparse;uuid.BufferClass=BufferClass;if(typeof define==="function"&&define.amd){define(function(){return uuid})}else if(typeof module!="undefined"&&module.exports){module.exports=uuid}else{var _previousRoot=_global.uuid;uuid.noConflict=function(){_global.uuid=_previousRoot;return uuid};_global.uuid=uuid}}).call(this);

var another=function(){var s=function(){return((1+Math.random())*65536|0).toString(16).substring(1)},r=[8,9,"a","b"];return s()+s()+"-"+s()+"-4"+s().substr(0,3)+"-"+r[Math.floor(Math.random()*4)]+s().substr(0,3)+"-"+s()+s()+s()};

</script>

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Testing in unknown unknown
Test Ops/sec
uuid.v1()
uuid.v1()
pending…
uuid.v4()
uuid.v4()
pending…
Crazy Gist
another()
pending…

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