Slow performance in example games

[codygman]

cat /etc/issue
Ubuntu 13.04 \n \l

cody@cody-G46VW:~$ firefox --version

(process:7417): GLib-CRITICAL **: g_slice_set_config: assertion `sys_page_size == 0' failed
Mozilla Firefox 24.0
cody@cody-G46VW:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          7872       6345       1526          0        105        985
-/+ buffers/cache:       5255       2617
Swap:            0          0          0

cody@cody-G46VW:~$ lspci | grep "VGA compatible controller"
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GTX 660M] (rev ff)
cody@cody-G46VW:~$ 

I am currently using the intel graphics card in my browser. I just tried using primusrun firefox to use the nvidia card but that doesn't make a difference (which isn't a surprise).

The issue I'm having is with the ball pausing/the entire game seeming to glitch. I would like know why the performance is bad since I'm very interested in making a game with elm.

I believe elm has a good chance of showing people why functional reactive programming is a good thing, but I already know what responses will be if I show people a slow breakout example :/

EDIT: I can barely play the maze game because the circle lags behind my mouse so much: http://daiw.de/games/maze/
Thanks for your time and please let me know if you need anymore information.

[evancz]

cc @Dobiasd

I am not sure what the issue is, and have not heard anything like that so far. I know FireFox can have bad garbage collection behavior (worse than other browsers at least). Is it the same in other browsers? Also, is your CPU notable in any way?

[codygman]

Alright, on Chromium 28.0.1500.71 Ubuntu 13.04 it runs very smoothly. In firefox I can confirm that my cpu usage spikes up to 75% while playing the maze game. Here is my cpu model:

Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz

I'm also not on battery so we can rule out laptop-mode messing with my cpu I believe. I'm also not totally sure how to profile the code to figure out what's making things spike, though I'm interested ;)

P.S. Thanks for the quick response!

[codygman]

I used the firebug fireunit profiler and here are most of the results.

Not sure if the picture is going to upload, so here is this:

move    867 0.05%   5.094ms 7978.887ms  9.203ms 5.092ms 247.925ms   elm-runtime.js (line 2174)
notify  973 0.08%   7.677ms 8726.268ms  8.968ms 0.858ms 247.907ms   elm-runtime.js (line 6151)
anonymous   106 0.01%   0.697ms 765.196ms   7.219ms 0.861ms 25.178ms    elm-runtime.js (line 2476)
anonymous   925 0.03%   2.531ms 5696.544ms  6.158ms 4.597ms 246.565ms   /games/maze/ (line 753)
anonymous   925 0.03%   3.105ms 5694.013ms  6.156ms 4.595ms 246.563ms   /games/maze/ (line 755)
anonymous   925 0.1%    9.521ms 5690.908ms  6.152ms 4.593ms 246.56ms    /games/maze/ (line 760)
anonymous   925 0.03%   2.539ms 5649.916ms  6.108ms 4.557ms 246.51ms    /games/maze/ (line 711)
anonymous   925 0.03%   2.573ms 5647.377ms  6.105ms 4.555ms 246.506ms   /games/maze/ (line 713)
anonymous   925 0.48%   44.976ms    5644.804ms  6.102ms 4.554ms 246.504ms   /games/maze/ (line 715)
anonymous   973 0.15%   13.964ms    5768.25ms   5.928ms 0.018ms 246.659ms   elm-runtime.js (line 2346)
anonymous   1946    0.06%   5.691ms 8612.49ms   4.426ms 0ms 247.807ms   elm-runtime.js (line 2317)
anonymous   190 0.02%   1.907ms 706.023ms   3.716ms 2.166ms 28.453ms    elm-runtime.js (line 6279)
anonymous   925 0.03%   3.063ms 3348.759ms  3.62ms  3.065ms 19.489ms    /games/maze/ (line 579)
anonymous   925 0.33%   31.286ms    3345.696ms  3.617ms 3.061ms 19.485ms    /games/maze/ (line 581)
anonymous   770 0.03%   2.386ms 2727.057ms  3.542ms 0.571ms 64.998ms    /games/maze/ (line 643)
anonymous   770 0.02%   1.942ms 2724.671ms  3.539ms 0.57ms  64.994ms    /games/maze/ (line 645)
anonymous   770 0.02%   2.004ms 2722.729ms  3.536ms 0.568ms 64.992ms    /games/maze/ (line 647)
anonymous   770 0.18%   17.093ms    2720.725ms  3.533ms 0.566ms 64.988ms    /games/maze/ (line 649)
anonymous   770 0.02%   2.076ms 2676.505ms  3.476ms 0.506ms 64.92ms /games/maze/ (line 493)
anonymous   770 0.1%    9.68ms  2674.429ms  3.473ms 0.504ms 64.918ms    /games/maze/ (line 495)
update  190 2.02%   190.472ms   659.357ms   3.47ms  2.1ms   28.348ms    elm-runtime.js (line 6679)
anonymous   973 0.03%   2.55ms  2819.946ms  2.898ms 0.092ms 65.075ms    /games/maze/ (line 805)
anonymous   973 0.02%   2.202ms 2817.396ms  2.896ms 0.09ms  65.072ms    /games/maze/ (line 807)
anonymous   973 0.03%   2.738ms 2815.194ms  2.893ms 0.088ms 65.069ms    /games/maze/ (line 809)
anonymous   973 0.13%   12.279ms    2812.456ms  2.89ms  0.086ms 65.066ms    /games/maze/ (line 811)
any 1540    0.08%   7.096ms 2593.977ms  1.684ms 0.023ms 64.615ms    elm-runtime.js (line 692)
update  3738    0.08%   7.359ms 5731.529ms  1.533ms 0.004ms 246.572ms   elm-runtime.js (line 2284)
anonymous   5838    0.07%   6.855ms 8718.591ms  1.493ms 0.001ms 247.828ms   elm-runtime.js (line 2248)
update  570 0.03%   2.719ms 662.699ms   1.163ms 0ms 28.374ms    elm-runtime.js (line 6889)
anonymous   1850    0.13%   12.031ms    1959.099ms  1.059ms 0.406ms 239.336ms   /games/maze/ (line 71)
anonymous   1850    0.16%   15.17ms 1596.987ms  0.863ms 0.358ms 3.249ms elm-runtime.js (line 1307)
htmlHeight  1850    16.44%  1553.311ms  1561.579ms  0.844ms 0.346ms 3.184ms elm-runtime.js (line 1572)
anonymous   5959    0.09%   8.675ms 2495.369ms  0.419ms 0.313ms 61.349ms    /games/maze/ (line 436)
anonymous   5959    0.09%   8.898ms 2486.694ms  0.417ms 0.312ms 61.346ms    /games/maze/ (line 438)
anonymous   5959    1.92%   181.344ms   2477.796ms  0.416ms 0.311ms 61.343ms    /games/maze/ (line 443)
anonymous   23352   0.39%   36.478ms    8698.033ms  0.372ms 0ms 247.825ms   elm-runtime.js (line 2266)
send    28217   0.13%   12.263ms    8711.736ms  0.309ms 0ms 247.827ms   elm-runtime.js (line 2236)
anonymous   9250    0.13%   12.621ms    2060.63ms   0.223ms 0.183ms 15.167ms    /games/maze/ (line 624)
anonymous   9250    0.47%   44.493ms    2048.009ms  0.221ms 0.182ms 15.165ms    /games/maze/ (line 626)
resizeIfNeeded  190 0.01%   0.899ms 41.417ms    0.218ms 0.04ms  0.752ms elm-runtime.js (line 2745)
map 14800   1.2%    113.33ms    3164.794ms  0.214ms 0.106ms 17.707ms    elm-runtime.js (line 589)
anonymous   1850    0.09%   8.375ms 388.951ms   0.21ms  0.183ms 0.636ms /games/maze/ (line 584)
anonymous   12025   0.28%   26.822ms    2235.14ms   0.186ms 0.155ms 15.091ms    elm-runtime.js (line 5400)
anonymous   12025   0.16%   15.344ms    2208.318ms  0.184ms 0.153ms 15.087ms    elm-runtime.js (line 5345)
anonymous   12025   3.48%   328.886ms   2192.974ms  0.182ms 0.152ms 15.085ms    elm-runtime.js (line 5347)
getWidth    190 0.35%   33.432ms    33.432ms    0.176ms 0.007ms 0.678ms elm-runtime.js (line 2726)
element 380 0.37%   34.561ms    66.579ms    0.175ms 0.088ms 0.556ms elm-runtime.js (line 6639)
anonymous   18957   0.2%    19.048ms    3145.821ms  0.166ms 0.021ms 65.078ms    elm-runtime.js (line 243)
toText  1850    0.08%   7.63ms  306.219ms   0.166ms 0.026ms 237.452ms   elm-runtime.js (line 1266)
properEscape    1850    2.84%   267.964ms   288.083ms   0.156ms 0.018ms 237.427ms   elm-runtime.js (line 1251)
getContext  190 0.12%   10.895ms    18.196ms    0.096ms 0.075ms 0.19ms  elm-runtime.js (line 6620)
filter  5959    1.44%   135.847ms   536.797ms   0.09ms  0.06ms  61.026ms    elm-runtime.js (line 646)
anonymous   11918   0.18%   17.065ms    947.087ms   0.079ms 0.06ms  0.34ms  /games/maze/ (line 417)
anonymous   11918   2.13%   201.423ms   930.022ms   0.078ms 0.058ms 0.334ms /games/maze/ (line 419)
drawShape   2660    0.79%   74.544ms    152.616ms   0.057ms 0.033ms 0.21ms  elm-runtime.js (line 6450)
range   12025   2.2%    207.743ms   621.488ms   0.052ms 0.043ms 0.319ms elm-runtime.js (line 552)
renderForm  6460    0.27%   25.744ms    329.123ms   0.051ms 0.027ms 0.224ms elm-runtime.js (line 6480)
anonymous   770 0.02%   1.863ms 39.329ms    0.051ms 0.038ms 0.172ms /games/maze/ (line 76)
anonymous   770 0.05%   5.158ms 37.466ms    0.049ms 0.037ms 0.165ms /games/maze/ (line 78)
f   106 0.05%   4.831ms 5.206ms 0.049ms 0.021ms 0.137ms elm-runtime.js (line 2484)
anonymous   140 0%  0.372ms 6.376ms 0.046ms 0.032ms 0.185ms /games/maze/ (line 686)
addTransform    380 0.18%   17.251ms    17.251ms    0.045ms 0.027ms 0.137ms elm-runtime.js (line 7004)
domUpdate   925 0.03%   3.064ms 39.971ms    0.043ms 0.032ms 0.121ms elm-runtime.js (line 6278)
anonymous   140 0%  0.314ms 6.004ms 0.043ms 0.03ms  0.178ms /games/maze/ (line 688)
anonymous   140 0%  0.347ms 5.69ms  0.041ms 0.029ms 0.172ms /games/maze/ (line 690)
anonymous   925 0.39%   36.907ms    36.907ms    0.04ms  0.029ms 0.113ms elm-runtime.js (line 6338)
drawLine    3800    0.23%   21.363ms    150.763ms   0.04ms  0.023ms 0.162ms elm-runtime.js (line 6410)
transform   190 0.08%   7.301ms 7.301ms 0.038ms 0.028ms 0.079ms elm-runtime.js (line 6609)
anonymous   140 0.01%   1.128ms 5.343ms 0.038ms 0.027ms 0.166ms /games/maze/ (line 692)
getHeight   190 0.07%   7.086ms 7.086ms 0.037ms 0.029ms 0.073ms elm-runtime.js (line 2727)
anonymous   1695    0.04%   3.935ms 62.831ms    0.037ms 0.027ms 0.141ms /games/maze/ (line 133)
anonymous   973 0.03%   2.545ms 34.8ms  0.036ms 0.024ms 0.115ms /games/maze/ (line 774)
uncurry 19473   0.74%   69.948ms    690.543ms   0.035ms 0.004ms 0.208ms elm-runtime.js (line 28)
anonymous   1695    0.09%   8.046ms 58.896ms    0.035ms 0.026ms 0.135ms /games/maze/ (line 135)
anonymous   116510  0.78%   73.471ms    3993.572ms  0.034ms 0.004ms 61.351ms    elm-runtime.js (line 235)
foldr   5959    0.62%   58.344ms    198.009ms   0.033ms 0.025ms 0.213ms elm-runtime.js (line 609)
anonymous   973 0.09%   8.614ms 32.255ms    0.033ms 0.023ms 0.107ms /games/maze/ (line 776)
anonymous   63  0%  0.226ms 2.103ms 0.033ms 0.02ms  0.193ms /games/maze/ (line 552)
line    3800    0.89%   83.986ms    120.709ms   0.032ms 0.018ms 0.132ms elm-runtime.js (line 6369)
anonymous   19473   0.26%   24.474ms    606.85ms    0.031ms 0.002ms 0.185ms elm-runtime.js (line 252)
anonymous   18500   0.22%   20.92ms 580.002ms   0.031ms 0.024ms 0.177ms /games/maze/ (line 401)
makeTransform   380 0.05%   4.854ms 11.969ms    0.031ms 0.021ms 0.102ms elm-runtime.js (line 6520)
anonymous   18500   1.15%   108.461ms   559.082ms   0.03ms  0.023ms 0.169ms /games/maze/ (line 403)
anonymous   63  0%  0.173ms 1.877ms 0.03ms  0.018ms 0.169ms /games/maze/ (line 554)
zip 1695    0.21%   19.967ms    49.757ms    0.029ms 0.022ms 0.117ms elm-runtime.js (line 710)
trace   2660    0.4%    37.778ms    72.735ms    0.027ms 0.01ms  0.107ms elm-runtime.js (line 6357)
anonymous   63  0%  0.279ms 1.704ms 0.027ms 0.015ms 0.154ms /games/maze/ (line 556)
anonymous   12025   0.18%   16.604ms    306.827ms   0.026ms 0.02ms  0.148ms /games/maze/ (line 155)
anonymous   12025   0.42%   39.368ms    290.223ms   0.024ms 0.019ms 0.139ms /games/maze/ (line 157)
anonymous   11918   0.17%   15.732ms    281.931ms   0.024ms 0.016ms 0.162ms /games/maze/ (line 358)
anonymous   63  0%  0.445ms 1.425ms 0.023ms 0.014ms 0.052ms /games/maze/ (line 558)
anonymous   11918   0.36%   33.831ms    266.199ms   0.022ms 0.015ms 0.156ms /games/maze/ (line 360)
stepper 190 0.02%   1.933ms 4.142ms 0.022ms 0.016ms 0.049ms elm-runtime.js (line 6549)
anonymous   3524    0.06%   5.381ms 75.533ms    0.021ms 0.016ms 0.102ms /games/maze/ (line 343)
anonymous   3524    0.1%    9.191ms 70.152ms    0.02ms  0.015ms 0.097ms /games/maze/ (line 345)
anonymous   15442   0.36%   33.799ms    286.505ms   0.019ms 0.012ms 0.145ms /games/maze/ (line 339)
A2  450762  0.25%   23.669ms    8610.499ms  0.019ms 0.001ms 246.569ms   elm-runtime.js (line 309)
A3  151587  0.1%    9.617ms 2770.412ms  0.018ms 0.006ms 65.001ms    elm-runtime.js (line 312)
fromArray   52308   3.7%    349.93ms    883.19ms    0.017ms 0ms 0.347ms elm-runtime.js (line 544)
anonymous   24192   0.31%   29.369ms    391.017ms   0.016ms 0.011ms 0.209ms /games/maze/ (line 248)
anonymous   15442   0.2%    18.545ms    252.706ms   0.016ms 0.011ms 0.136ms /games/maze/ (line 311)
anonymous   15442   1.36%   128.774ms   234.161ms   0.015ms 0.01ms  0.13ms  /games/maze/ (line 313)
anonymous   24192   0.29%   27.066ms    361.648ms   0.015ms 0.01ms  0.208ms /games/maze/ (line 250)
anonymous   24192   1.99%   187.862ms   334.582ms   0.014ms 0.01ms  0.206ms /games/maze/ (line 255)
getXY   867 0.09%   8.295ms 12.024ms    0.014ms 0.01ms  0.082ms elm-runtime.js (line 1588)
anonymous   910 0.02%   2.22ms  12.818ms    0.014ms 0.009ms 0.113ms /games/maze/ (line 381)
anonymous   925 0.02%   2.079ms 11.713ms    0.013ms 0.009ms 0.043ms elm-runtime.js (line 5321)
anonymous   11918   0.16%   15.231ms    139.117ms   0.012ms 0.007ms 0.081ms /games/maze/ (line 393)
anonymous   910 0.06%   5.782ms 10.598ms    0.012ms 0.007ms 0.107ms /games/maze/ (line 383)
anonymous   1898    0.04%   3.678ms 23.66ms 0.012ms 0.006ms 0.06ms  /games/maze/ (line 281)
makeSpaces  1850    0.21%   20.119ms    20.119ms    0.011ms 0.005ms 0.085ms elm-runtime.js (line 1225)
anonymous   13875   0.2%    18.659ms    154.916ms   0.011ms 0.007ms 0.115ms elm-runtime.js (line 5381)
color   1850    0.06%   5.347ms 20.387ms    0.011ms 0.006ms 0.114ms elm-runtime.js (line 1294)
anonymous   1898    0.04%   3.984ms 19.982ms    0.011ms 0.005ms 0.059ms /games/maze/ (line 283)
anonymous   11918   0.3%    28.02ms 123.886ms   0.01ms  0.006ms 0.078ms /games/maze/ (line 395)
anonymous   23836   0.29%   27.5ms  245.719ms   0.01ms  0.007ms 0.082ms /games/maze/ (line 210)
customLineHelp  3800    0.29%   27.173ms    36.723ms    0.01ms  0.007ms 0.069ms elm-runtime.js (line 6375)
anonymous   13875   0.27%   25.776ms    136.257ms   0.01ms  0.006ms 0.065ms elm-runtime.js (line 5383)
anonymous   925 0.04%   3.893ms 9.634ms 0.01ms  0.007ms 0.035ms elm-runtime.js (line 5323)
collage 925 0.04%   3.571ms 9.122ms 0.01ms  0.007ms 0.05ms  elm-runtime.js (line 1642)
stepperHelp 570 0.02%   2.225ms 5.913ms 0.01ms  0.004ms 0.029ms elm-runtime.js (line 6534)
anonymous   12950   0.39%   36.448ms    110.143ms   0.009ms 0.006ms 0.065ms elm-runtime.js (line 5461)
anonymous   23836   0.27%   25.419ms    218.219ms   0.009ms 0.006ms 0.079ms /games/maze/ (line 212)
append  3892    0.2%    19.169ms    36.871ms    0.009ms 0ms 0.049ms elm-runtime.js (line 560)
anonymous   23836   0.3%    28.679ms    192.8ms 0.008ms 0.005ms 0.077ms /games/maze/ (line 217)
anonymous   18500   0.22%   20.954ms    146.221ms   0.008ms 0.005ms 0.072ms elm-runtime.js (line 5449)
anonymous   2775    0.11%   10.579ms    21.688ms    0.008ms 0.004ms 0.05ms  elm-runtime.js (line 5613)
anonymous   1898    0.1%    9.085ms 15.998ms    0.008ms 0.004ms 0.031ms /games/maze/ (line 288)
anonymous   925 0.02%   1.744ms 7.041ms 0.008ms 0.006ms 0.02ms  elm-runtime.js (line 5313)
anonymous   23836   0.54%   50.665ms    164.121ms   0.007ms 0.004ms 0.074ms /games/maze/ (line 222)
anonymous   11918   0.2%    19.149ms    78.786ms    0.007ms 0.004ms 0.059ms /games/maze/ (line 115)
anonymous   1946    0.07%   7.014ms 12.708ms    0.007ms 0ms 0.044ms elm-runtime.js (line 2409)
anonymous   925 0.02%   2.247ms 6.065ms 0.007ms 0.005ms 0.035ms /games/maze/ (line 590)
formToMatrix    760 0.01%   1.406ms 5.428ms 0.007ms 0.002ms 0.034ms elm-runtime.js (line 6504)
replace 126227  2.3%    217.302ms   748.461ms   0.006ms 0.003ms 0.149ms elm-runtime.js (line 1543)
anonymous   47672   0.7%    66.296ms    298.971ms   0.006ms 0.004ms 0.108ms /games/maze/ (line 150)
updateProps 570 0.04%   3.421ms 3.421ms 0.006ms 0.002ms 0.065ms elm-runtime.js (line 6952)
anonymous   23836   0.8%    76.022ms    108.741ms   0.005ms 0.003ms 0.07ms  /games/maze/ (line 166)
anonymous   23836   0.67%   63.687ms    124.812ms   0.005ms 0.003ms 0.101ms elm-runtime.js (line 4827)
anonymous   18500   0.57%   53.754ms    83.641ms    0.005ms 0.003ms 0.059ms elm-runtime.js (line 5481)
anonymous   11918   0.48%   45.797ms    63.011ms    0.005ms 0.004ms 0.075ms /games/maze/ (line 125)
anonymous   18500   0.42%   39.31ms 95.577ms    0.005ms 0.004ms 0.057ms /games/maze/ (line 172)
anonymous   12950   0.39%   36.961ms    65.218ms    0.005ms 0.003ms 0.058ms elm-runtime.js (line 5457)
next    7220    0.18%   17.389ms    33.802ms    0.005ms 0.001ms 0.134ms elm-runtime.js (line 6562)
anonymous   1850    0.06%   5.913ms 8.992ms 0.005ms 0.003ms 0.033ms elm-runtime.js (line 5497)
anonymous   1850    0.05%   5.009ms 9.497ms 0.005ms 0.002ms 0.044ms elm-runtime.js (line 5509)
anonymous   1946    0.04%   3.46ms  8.763ms 0.005ms 0.002ms 0.022ms /games/maze/ (line 778)
height  1850    0.03%   2.84ms  8.734ms 0.005ms 0.003ms 0.031ms elm-runtime.js (line 1286)
A6  1140    0.02%   1.762ms 6.203ms 0.005ms 0.001ms 0.026ms elm-runtime.js (line 321)
updateTracker   190 0.01%   0.871ms 0.871ms 0.005ms 0.003ms 0.027ms elm-runtime.js (line 6606)
copy    126227  5.62%   531.159ms   531.159ms   0.004ms 0.002ms 0.126ms elm-runtime.js (line 1525)
anonymous   23836   0.68%   64.412ms    98.894ms    0.004ms 0.003ms 0.068ms /games/maze/ (line 230)
toArray 16789   0.67%   63.048ms    63.048ms    0.004ms 0ms 0.063ms elm-runtime.js (line 535)
anonymous   7700    0.29%   27.699ms    28.941ms    0.004ms 0ms 0.132ms /games/maze/ (line 44)
addStyle    5550    0.12%   11.296ms    21.063ms    0.004ms 0.002ms 0.063ms elm-runtime.js (line 1274)
update  2707    0.07%   6.826ms 10.305ms    0.004ms 0.001ms 0.036ms elm-runtime.js (line 2280)
anonymous   2707    0.05%   4.979ms 11.319ms    0.004ms 0.001ms 0.05ms  elm-runtime.js (line 5008)
matrix  1140    0.05%   4.441ms 4.441ms 0.004ms 0.001ms 0.018ms elm-runtime.js (line 1379)
anonymous   989 0.04%   4.203ms 4.203ms 0.004ms 0.001ms 0.021ms elm-runtime.js (line 882)
A4  925 0.03%   2.403ms 3.818ms 0.004ms 0.003ms 0.032ms elm-runtime.js (line 315)
monospace   1850    0.02%   2.207ms 7.86ms  0.004ms 0.003ms 0.029ms elm-runtime.js (line 1281)
anonymous   7700    0.02%   1.981ms 30.922ms    0.004ms 0ms 0.139ms /games/maze/ (line 42)
tick    106 0%  0.375ms 0.375ms 0.004ms 0.001ms 0.01ms  elm-runtime.js (line 2476)
F3  24192   0.67%   63.185ms    63.185ms    0.003ms 0.001ms 0.192ms elm-runtime.js (line 241)
F2  16367   0.52%   49.032ms    49.032ms    0.003ms 0.001ms 0.079ms elm-runtime.js (line 234)
anonymous   23836   0.25%   23.336ms    61.125ms    0.003ms 0.001ms 0.041ms elm-runtime.js (line 4813)
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[codygman]

Seems to be the display functions that are taking so long right? But they don't seem to take so long in chromium. Should I be filing a bug report with firefox? If so, any ideas what I would file it for?

Edit: It could be related to this https://bugzilla.mozilla.org/show_bug.cgi?id=850114

[codygman]

Alright this could actually be an ubuntu specific issue. My girlfriend who is using Debian told me it runs smoothly with no problems. Will get more specific specs in a second but I believe she just uses whatever debian stable and debian backports repos have.

[codygman]

This issue was caused by my high polling gaming mouse (logitech g500) which does 1000 polls per second if I recall correctly. I figured this out because I wasn't having issues with my touchpad.

BUT... chrome still handled the number of polls my gaming mouse was sending.

[Dobiasd]

I now limit the maximum mouse polling frequency to 60 fps in the maze game. Please check if it now also works smoothly in firefox with your pro gamer mouse. ;)

[johnpmayer]

We're looking at something like http://remysharp.com/2010/07/21/throttling-function-calls/ for managing this by default.

[codygman]

@Dobiasd Pro gamer mouse, LOL. It is much smoother, but there is still a little (manageable) lag. I'm guessing that is because the combination of firefox+my machine can't handle polling of 60fps?

@johnpmayer Oh, that's cool. I think that will be very helpful in these situations.

[evancz]

I'm going to close this, but now we know to watch out for gaming mouses. I'm not sure if there's a language or library level solution for this.