feat: merge concurrent physical read

[MrCroxx]

What's changed and what's your intention?

Please explain IN DETAIL what the changes are in this PR and why they are needed. :D

Add wait map to merge concurrent physical reads.

Benchmark:

commands:

rm -rf /p44pro/foyer && cargo build --release && RUST_BACKTRACE=1 RUST_LOG=warn ./target/release/foyer-storage-bench --dir /p44pro/foyer --capacity 204800 --region-size 64 --lookup-range 100000 --flushers 8 --reclaimers 8 --buffer-pool-size 1024 --time 60 --writers 1024 --w-rate 1 --allocator-bits 2 --ticket-insert-rate-limit 1024 --readers 1024 --r-rate 1 --runtime 2>&1 | tee -i ./target/bench.log

main:

Total:
disk total iops: 172739.5
disk total throughput: 2.0 GiB/s
disk read iops: 103624.9
disk read throughput: 0.9 GiB/s
disk write iops: 69114.5
disk write throughput: 1.1 GiB/s
insert iops: 16331.0/s
insert throughput: 1.0 GiB/s
insert lat p50: 235us
insert lat p90: 523us
insert lat p99: 18943us
insert lat pmax: 249855us
get iops: 17528.7/s
get miss: 6.83%
get throughput: 1.0 GiB/s
get hit lat p50: 17023us
get hit lat p90: 31487us
get hit lat p99: 46591us
get hit lat pmax: 84479us
get miss lat p50: 767us
get miss lat p90: 1319us
get miss lat p99: 5791us
get miss lat pmax: 20735us

branch:

Total:
disk total iops: 75726.3
disk total throughput: 1.1 GiB/s
disk read iops: 6533.4
disk read throughput: 86.7 MiB/s
disk write iops: 69193.0
disk write throughput: 1.1 GiB/s
insert iops: 16331.8/s
insert throughput: 1.0 GiB/s
insert lat p50: 220us
insert lat p90: 433us
insert lat p99: 767us
insert lat pmax: 32639us
get iops: 17497.2/s
get miss: 6.66%
get throughput: 1.0 GiB/s
get hit lat p50: 791us
get hit lat p90: 1503us
get hit lat p99: 2127us
get hit lat pmax: 26367us
get miss lat p50: 727us
get miss lat p90: 1231us
get miss lat p99: 6079us
get miss lat pmax: 25599us

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have passed make check and make test or make all in my local envirorment.

Related issues or PRs (optional)

[MrCroxx]

On c6id.2xlarge NVMe:

4k readers + 4k writers + 200MB ticket insert rate limit

rm -rf /data/foyer && cargo build --release && RUST_BACKTRACE=1 RUST_LOG=warn ./target/release/foyer-storage-bench --dir /data/foyer --capacity 204800 --region-size 64 --lookup-range 100000 --flushers 8 --reclaimers 8 --buffer-pool-size 1024 --time 60 --writers 4096 --w-rate 1 --allocator-bits 2 --ticket-insert-rate-limit 200 --readers 4096 --r-rate 1 --runtime 2>&1 | tee -i ./target/bench.log

Total:
disk total iops: 28934.2
disk total throughput: 415.7 MiB/s
disk read iops: 15550.2
disk read throughput: 206.5 MiB/s
disk write iops: 13384.0
disk write throughput: 209.2 MiB/s
insert iops: 3194.1/s
insert throughput: 199.6 MiB/s
insert lat p50: 6847us
insert lat p90: 8127us
insert lat p99: 9471us
insert lat pmax: 24447us
get iops: 602552.4/s
get miss: 95.21%
get throughput: 1.8 GiB/s
get hit lat p50: 6815us
get hit lat p90: 8511us
get hit lat p99: 11263us
get hit lat pmax: 26879us
get miss lat p50: 6687us
get miss lat p90: 7903us
get miss lat p99: 9215us
get miss lat pmax: 27135us