about glibc performance
Konstantin Kharlamov
hi-angel@yandex.ru
Mon Mar 25 09:37:00 GMT 2019
On Пн, Mar 25, 2019 at 10:37:11, Jimmie <zpjjimmie@163.com> wrote:
> It seems like that I can't send attachment to libc-help. so I simply
> describe my test results.<br/>malloc and free 10000 times in
> per-thread, the datas is below(left column represent memsize per
> malloc. and the other column represent the cost time it uses, )<br/>
> glibc tcmalloc tbbmalloc<br/>1 213us
> 821us 168us<br/>10 215 820 175<br/>50
> 208 832 186<br/>100 204 808
> 194<br/>500 250 852 183<br/>1000
> 428 859 180<br/>5000 414 892
> 190<br/>8128 389 880 194<br/>8129 388
> 891 525<br/>10000 392 838
> 554<br/>100000 332 846 562<br/>262144 321
> 852 546<br/>262145 312
> 2045 600<br/>1000000 312 2126 555<br/>10000000 331
> 4645 1228<br/><br/><br/>malloc and free in 4 threads, 5000
> times per-thread<br/> glibc tcmalloc tbbmalloc<br/>1
> 284 1629 186<br/>10 297
> 1093 143<br/>48 285 1252 151<br/>49
> 282 552 150<br/>100 283 556
> 157<br/>1000 322 510 168<br/>5000 313
> 529 162<br/>8128 312 528 173<br/>8129
> 332 597 1350<br/>10000 324 589
> 1425<br/>100000 316 535 1428<br/>262144 319
> 534 1524<br/>262145 328
> 32596 1545<br/>1000000 321 27106 1330<br/>10000000
> 323 34590 14141<br/><br/>and I can provide my test code if
> necessary.<br/><br/>for more convenient and effective, maybe you can
> use the benchmark from here,
> https://github.com/gperftools/gperftools/tree/master/benchmark.
Oops, looks like your email client doesn't handle plain text well. But
nothing that a few Emacs regexps can't fix :)
Here're fixed benchmark results.
size glibc tcmalloc tbbmalloc
1 213us 821us 168us
10 215 820 175
50 208 832 186
100 204 808 194
500 250 852 183
1000 428 859 180
5000 414 892 190
8128 389 880 194
8129 388 891 525
10000 392 838 554
100000 332 846 562
262144 321 852 546
262145 312 2045 600
1000000 312 2126 555
10000000 331 4645 1228
malloc and free in 4 threads, 5000 times per-thread
size glibc tcmalloc tbbmalloc
1 284 1629 186
10 297 1093 143
48 285 1252 151
49 282 552 150
100 283 556 157
1000 322 510 168
5000 313 529 162
8128 312 528 173
8129 332 597 1350
10000 324 589 1425
100000 316 535 1428
262144 319 534 1524
262145 328 32596 1545
1000000 321 27106 1330
10000000 323 34590 14141
Well, looks like tcmalloc lags far behind the glibc, that's cool (well
for us at least :).
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