Andrew Kryczka 2225f063d4 Remove incremental ID from background thread pool names (#9165)
Summary:
`pthread_setname_np()` fails on attempts to assign oversized names like
"rocksdb:bottom10", which resulted in some thread name updates being
lost. We do not need the ID suffix so I removed it.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9165

Test Plan:
```
$ TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=fillrandom -max_background_flushes=123 -max_background_compactions=456 -num_bottom_pri_threads=789 -duration=60
```

While above is running:
```
$ ps -o 'comm' -Lp `pidof db_bench` | grep '^rocksdb:' | sort | uniq -c
    789 rocksdb:bottom
    123 rocksdb:high
    456 rocksdb:low
```

Reviewed By: pdillinger

Differential Revision: D32415077

Pulled By: ajkr

fbshipit-source-id: a0e013101e26a78bc5eca73509293ef4bf22254f
2021-11-16 18:26:12 -08:00
..
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