Metrics RT count optimization

[mytang0]

What is the purpose of the change

Optimize the logic of addRT and collectRT:

1. Improve computing performance

old

    private final ConcurrentMap<M, AtomicLong>      lastRT = new ConcurrentHashMap<>();
    private final ConcurrentMap<M, LongAccumulator> minRT  = new ConcurrentHashMap<>();
    private final ConcurrentMap<M, AtomicLong>      totalRT = new ConcurrentHashMap<>();
    private final ConcurrentMap<M, AtomicLong>      rtCount = new ConcurrentHashMap<>();

new

    // lastRT, totalRT, rtCount, avgRT share a container, can utilize the system cache line
    private final ConcurrentMap<M, AtomicLongArray> RTArray = new ConcurrentHashMap<>();

2. Optimize the interface design of MetricsCountSampler

Brief changelog

Verifying this change

Checklist

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[mytang0]

Please take a look @songxiaosheng

[songxiaosheng]

Please take a look @songxiaosheng

ok please wait

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
3 Code Smells

96.0% Coverage
0.0% Duplication

[AlbumenJ]

LGTM