siying

========= With Change =========
fillrandom   :      11.612 micros/op 86121 ops/sec;    9.5 MB/s


** Compaction Stats [default] **
Level    Files   Size     Score Read(GB)  Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) CompMergeCPU(sec) Comp(cnt) Avg(sec) KeyIn KeyDrop Rblob(GB) Wblob(GB)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  L0      3/0   89.64 MB   0.8      0.0     0.0      0.0       1.3      1.3       0.0   1.0      0.0     80.0     16.05             16.04        43    0.373       0      0       0.0       0.0
  L1      4/0   183.44 MB   0.7      3.1     1.2      1.9       2.9      0.9       0.0   2.5     75.2     69.9     42.03             42.02        10    4.203     48M  3314K       0.0       0.0

siying

[ec2-user@ip-172-31-25-140 rocksdb]$  TEST_TMPDIR=/data/ ./db_bench --benchmarks=fillrandom --num=50000000 -use_direct_io_for_flush_and_compaction -use_direct_reads
Initializing RocksDB Options from the specified file
Initializing RocksDB Options from command-line flags
RocksDB:    version 6.10
Date:       Thu May 28 22:01:48 2020
CPU:        8 * AMD EPYC 7571
CPUCache:   512 KB
Keys:       16 bytes each
Values:     100 bytes each (50 bytes after compression)
Entries:    50000000