New Terminal Output:

root@8beb00c26e2f:/app# redis-server /app/redis.conf &
[1] 28672
root@8beb00c26e2f:/app# 28672:C 31 Dec 2025 05:43:29.434 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
28672:C 31 Dec 2025 05:43:29.434 * Redis version=8.0.2, bits=64, commit=00000000, modified=0, pid=28672, just started
28672:C 31 Dec 2025 05:43:29.434 * Configuration loaded
28672:M 31 Dec 2025 05:43:29.435 * monotonic clock: POSIX clock_gettime
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis Open Source
  .-`` .-```.  ```\/    _.,_ ''-._      8.0.2 (00000000/0) 64 bit
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 28672
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           https://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

28672:M 31 Dec 2025 05:43:29.438 * Server initialized
28672:M 31 Dec 2025 05:43:29.438 * Ready to accept connections tcp
sleep 1 && redis-cli ping
PONG
root@8beb00c26e2f:/app# /app/redis_io_bench.py --json - --threads 1 --seconds 4 --warmup 1 --mget 32 --value-bytes 512 > /tmp/bench_py38_serial.json
root@8beb00c26e2f:/app#
