rocksdb

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Hui Xiao 50046869a4 Add rocksdb.file.read.db.open.micros (#11455 )

Summary:
**Context/Summary:**
`rocksdb.file.read.db.open.micros` is left out in https://github.com/facebook/rocksdb/pull/11288

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11455

Test Plan:
- db bench
Setup: `./db_bench -db=/dev/shm/testdb/ -statistics=true -benchmarks="fillseq" -key_size=32 -value_size=512 -num=5000 -write_buffer_size=655 -target_file_size_base=655 -disable_auto_compactions=false -compression_type=none -bloom_bits=3`
Run:
`./db_bench --bloom_bits=3 --use_existing_db=1 --seed=1682546046158958 --partition_index_and_filters=1 --statistics=1 -db=/dev/shm/testdb/  -benchmarks=readrandom  -key_size=3200 -value_size=512 -num=0 -write_buffer_size=6550000 -disable_auto_compactions=false -target_file_size_base=6550000 -compression_type=none -file_checksum=1 -cache_size=1`

```
rocksdb.sst.read.micros P50 : 3.979798 P95 : 9.738420 P99 : 19.566667 P100 : 39.000000 COUNT : 2360 SUM : 12148
rocksdb.file.read.flush.micros P50 : 0.000000 P95 : 0.000000 P99 : 0.000000 P100 : 0.000000 COUNT : 0 SUM : 0
rocksdb.file.read.compaction.micros P50 : 0.000000 P95 : 0.000000 P99 : 0.000000 P100 : 0.000000 COUNT : 0 SUM : 0
rocksdb.file.read.db.open.micros P50 : 3.979798 P95 : 9.738420 P99 : 19.566667 P100 : 39.000000 COUNT : 2360 SUM : 12148
```

Reviewed By: ajkr

Differential Revision: D45951934

Pulled By: hx235

fbshipit-source-id: 6c88639dc1b10d98ecccc963ce32a8800495f55b

2023-05-18 09:26:29 -07:00