How do you stress test?

#	User	Rating
1	tourist	3985
2	jiangly	3885
3	jqdai0815	3682
4	Benq	3580
5	orzdevinwang	3526
6	ksun48	3506
7	ecnerwala	3505
8	Radewoosh	3457
9	Kevin114514	3377
10	gamegame	3374

#	User	Contrib.
1	cry	170
2	Um_nik	162
3	atcoder_official	161
4	maomao90	159
5	-is-this-fft-	158
6	djm03178	157
7	Dominater069	156
8	adamant	154
9	luogu_official	153
10	awoo	152

Hi, I came across many people talking about stress testing their code. What do they mean by that? Do they write a brute force and generate a large number of sample answers? or are there smarter ways to go about it?

Always_WA14's blog