> cc -o sludge sludge.c -lpthread
> ./sludge >& output
> uname -sr
Linux 5.10.0-7-amd64
> grep awoke output
thread 23 sleep 10000, slept 2157: awoke
thread 1 sleep 10000, slept 2527: awoke
thread 24 sleep 10000, slept 1752: awoke
thread 5 sleep 10000, slept 1142: awoke
thread 2 sleep 10000, slept 1150: awoke
thread 28 sleep 10000, slept 1159: awoke
thread 23 sleep 10000, slept 1797: awoke
thread 26 sleep 10000, slept 107: awoke
thread 3 sleep 10000, slept 121: awoke
thread 10 sleep 10000, slept 1212: awoke
thread 13 sleep 10000, slept 1201: awoke
thread 1 sleep 10000, slept 51: awoke
thread 24 sleep 10000, slept 82: awoke
thread 16 sleep 10000, slept 86: awoke
thread 5 sleep 10000, slept 92: awoke
thread 1 sleep 10000, slept 25: awoke
thread 2 sleep 10000, slept 66: awoke
thread 26 sleep 10000, slept 62: awoke
thread 23 sleep 10000, slept 75: awoke
thread 24 sleep 10000, slept 76: awoke
thread 3 sleep 10000, slept 136: awoke
thread 1 sleep 10000, slept 116: awoke
thread 13 sleep 10000, slept 129: awoke
thread 16 sleep 10000, slept 128: awoke
thread 5 sleep 10000, slept 130: awoke
thread 3 sleep 10000, slept 21: awoke
thread 28 sleep 10000, slept 63: awoke
thread 10 sleep 10000, slept 57: awoke
thread 24 sleep 10000, slept 70: awoke
thread 26 sleep 10000, slept 74: awoke
thread 1 sleep 10000, slept 69: awoke
thread 23 sleep 10000, slept 87: awoke
thread 4 sleep 10000, slept 112: awoke
thread 3 sleep 10000, slept 2887: awoke
thread 2 sleep 10000, slept 2904: awoke
thread 5 sleep 10000, slept 2948: awoke
thread 28 sleep 10000, slept 2978: awoke
thread 10 sleep 10000, slept 3047: awoke
thread 24 sleep 10000, slept 3060: awoke
thread 26 sleep 10000, slept 3087: awoke
thread 23 sleep 10000, slept 3099: awoke
thread 16 sleep 10000, slept 3106: awoke
thread 24 sleep 10000, slept 96: awoke
thread 17 sleep 10000, slept 504: awoke
thread 25 sleep 10000, slept 490: awoke
thread 14 sleep 10000, slept 375: awoke
thread 1 sleep 10000, slept 3225: awoke
thread 27 sleep 10000, slept 380: awoke
thread 15 sleep 10000, slept 546: awoke
thread 2 sleep 10000, slept 345: awoke
thread 19 sleep 10000, slept 328: awoke
thread 4 sleep 10000, slept 478: awoke
thread 13 sleep 10000, slept 3283: awoke
thread 28 sleep 10000, slept 287: awoke
thread 10 sleep 10000, slept 237: awoke
thread 8 sleep 10000, slept 258: awoke
thread 26 sleep 10000, slept 226: awoke
thread 30 sleep 10000, slept 570: awoke
thread 12 sleep 10000, slept 504: awoke
thread 5 sleep 10000, slept 414: awoke
thread 3 sleep 10000, slept 706: awoke