# AS3 Loop Benchmarks (with results + files) **URL:** \ **Category:** flash\ **Created:** [January 4, 2009, 7:10am UTC](https://forum.kirupa.com/t/as3-loop-benchmarks-with-results-files/278707 "2009-01-04T07:10:59Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![El\_Phantom](https://avatars.discourse-cdn.com/v4/letter/e/d6d6ee/32.png) [@El\_Phantom](https://forum.kirupa.com/u/El_Phantom)\ **Post date:** [January 4, 2009, 7:10am UTC](https://forum.kirupa.com/t/as3-loop-benchmarks-with-results-files/278707/1 "2009-01-04T07:10:59Z")
Hey everybody, I was wondering about some AS3 loop benchmarks and decided to do some timer tests for all the loops, because a lot of the information I found online seemed to either be out of date or inconclusive. I put in just about every type of loop I could think of off the top of my head (at least the straightforward ones) and here are the files and results: before I make any conclusions I thought I would put this up here for you guys to look at and see if I have any of the loops implemented wrong or have anything that could affect performance. Also if you have any other types of loops you would like me to add, please post them and I will try to include them over the next few days. I used counters to make sure that each loop had the exact same number of iterations, but if you see an error in anything please let me know. assumptions I have made: 1. \<= and \>= have the same evaluation speed as \< and \> 2. i can use an int type set to -1 for the starting index for some loops without impacting speed 3. the order i call my test functions does not affect their performance i probably should test these all separately and get an average, but I thought I would make sure I haven’t done something horribly wrong before I proceed: anyways, here are the results, for 1000000 iterations, published for FP9 at 31fps. I am on WindowsXP, running an AMD Athlon 64 Processor at 2.01 GHz with 2 gigs of ram. the read test reads int values into a local variable from a prepopulated array. the write tests pushes the index of the loop to an empty array. please see the files for more info, looking forward to your responses. whileLoopEmpty1: while(i \< n){i++} -\> 7ms whileLoopEmpty2: while(i \> 0){i–} -\> 5ms whileLoopEmpty3: while(i \< n){++i} -\> 7ms whileLoopEmpty4: while(i \> 0){–i} -\> 7ms whileLoopEmpty5: while(i++ \< n){} -\> 6ms whileLoopEmpty6: while(i-- \> 0){} -\> 8ms whileLoopEmpty7: while(++i \< n){} -\> 6ms whileLoopEmpty8: while(–i \>= 0){} -\> 5ms whileLoopRead1: while(i \< n){i++} -\> 23ms whileLoopRead2: while(i \> 0){i–} -\> 22ms whileLoopRead3: while(i \< n){++i} -\> 23ms whileLoopRead4: while(i \> 0){–i} -\> 22ms whileLoopRead5: while(i++ \< n){} -\> 28ms whileLoopRead6: while(i-- \> 0){} -\> 22ms whileLoopRead7: while(++i \< n){} -\> 22ms whileLoopRead8: while(–i \>= 0){} -\> 20ms whileLoopWrite1: while(i \< n){i++} -\> 202ms whileLoopWrite2: while(i \> 0){i–} -\> 183ms whileLoopWrite3: while(i \< n){++i} -\> 183ms whileLoopWrite4: while(i \> 0){–i} -\> 221ms whileLoopWrite5: while(i++ \< n){} -\> 182ms whileLoopWrite6: while(i-- \> 0){} -\> 193ms whileLoopWrite7: while(++i \< n){} -\> 209ms whileLoopWrite8: while(–i \>= 0){} -\> 181ms forLoopEmpty1: for(i = 0; i \< n; i++){} -\> 8ms forLoopEmpty2: for(i = n; i \>= 0; i–){} -\> 6ms forLoopEmpty3: for(i = 0; i \< n; ++i){} -\> 7ms forLoopEmpty4: for(i = n; i \>= 0; --i){} -\> 7ms forLoopRead1:for(i = 0; i \< n; i++){} -\> 21ms forLoopRead2: for(i = n; i \>= 0; i–){} -\> 23ms forLoopRead3: for(i = 0; i \< n; ++i){} -\> 23ms forLoopRead4: for(i = n; i \>= 0; --i){} -\> 22ms forLoopWrite1: for(i = 0; i \< n; i++){} -\> 188ms forLoopWrite2: for(i = n; i \>= 0; i–){} -\> 187ms forLoopWrite3: for(i = 0; i \< n; ++i){} -\> 245ms forLoopWrite4: for(i = n; i \>= 0; --i){} -\> 193ms forInEmpty: for(i in array){} -\> 792ms forInAssign: for(i in array){} -\> 3807ms forInWrite: for(i in array){} -\> 3858ms forEachInEmpty: for each(i in array){} -\> 43ms forEachInAssign: for each(i in array){} -\> 43ms forEachInWrite: for each(i in array){} -\> 260ms