$ ab -n 10 -c 2 -t 1 -v 2 http://193.108.113.188/
...
Finished 145 requests
Server Software: nginx/1.21.3
Server Hostname: 193.108.113.188
Server Port: 80
Document Path: /cat
Document Length: 0 bytes
Concurrency Level: 2
Time taken for tests: 1.001 seconds
Complete requests: 145
Failed requests: 0
Non-2xx responses: 145
Total transferred: 36395 bytes
HTML transferred: 0 bytes
Requests per second: 144.85 [#/sec] (mean)
Time per request: 13.807 [ms] (mean)
Time per request: 6.904 [ms] (mean, across all concurrent requests)
Transfer rate: 35.51 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 4 5 1.5 5 16
Processing: 5 8 5.3 7 54
Waiting: 5 8 5.3 7 53
Total: 9 13 5.8 12 62
Percentage of the requests served within a certain time (ms)
50% 12
66% 13
75% 14
80% 14
90% 17
95% 19
98% 25
99% 54
100% 62 (longest request)
Вывод по тестированию - по какой-то причине ab не поддерживает auto redirects.