Benchmarks for bb8-v0.7, qp-v0.1.3 and qp-v0.2.0 deadlock

[bikeshedder]

I just found this repository and was curious to use this data to see if there is any optimization potential in deadpool. When running the benchmarks myself I ran into an interesting problem. Some of the benchmarks simply deadlock:

bb8-v0.7

rust-pool-benchmark/bb8-v0.7 on  main [!?] via 🦀 v1.60.0 
❯ cargo bench
    Finished bench [optimized] target(s) in 0.02s
     Running unittests (target/release/deps/bench_main-4d2bfb7599dace8c)
bb8-v0.7 (pool=4, worker=4): 8.361µs (Q1=8.079µs, Q3=8.876µs)
thread 'tokio-runtime-worker' panicked at 'called `Result::unwrap()` on an `Err` value: TimedOut', benches/bench_main.rs:55:64
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: JoinError::Panic(Id(4914), ...)', benches/bench_main.rs:63:34
error: bench failed

qp-v0.1.3

rust-pool-benchmark/qp-v0.1.3 on  main [!?] via 🦀 v1.60.0 
❯ cargo bench
    Finished bench [optimized] target(s) in 0.01s
     Running unittests (target/release/deps/bench_main-7b3924d4f7fae3c8)
qp-v0.1.3 (pool=4, worker=4): 8.946µs (Q1=8.628µs, Q3=9.47µs)

No output from that point onward. Checking the process manager I can see 0 CPU load for that process and all threads sleeping. So I can only assume it has deadlocked.

qp-v0.2.0

rust-pool-benchmark/qp-v0.2.0 on  main [!?] via 🦀 v1.60.0 
❯ cargo bench
    Finished bench [optimized] target(s) in 0.28s
     Running unittests (target/release/deps/bench_main-73eaede4d127b79a)
qp-v0.2.0 (pool=4, worker=4): 8.808µs (Q1=8.515µs, Q3=9.38µs)
(5 minutes later... still nothing...)

No output from that point onward. Checking the process manager I can see 0 CPU load for that process and all threads sleeping. So I can only assume it has deadlocked.

My system details:

❯ cat /proc/cpuinfo |grep "model name"|head -n 1
model name	: Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz

❯ cat /proc/meminfo |grep MemTotal
MemTotal:       131839000 kB

❯ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 21.10
Release:	21.10
Codename:	impish