yamcsadmin rocksdb¶

Synopsis¶

Description¶

Provides low-level RocksDB data operations.

Commands¶

compact [--dbDir DIR] [--sizeMB SIZE]

Compact RocksDB database

bench [--dbDir DIR] [--baseTime TIME] [--count COUNT] [--duration HOURS]

Benchmark RocksDB storage engine.

A rocksbench archive instance will be created in the directory indicated by --dbDir.

The benchmark consists of a table load and a few selects. The table is loaded with telemetry packets received at frequencies of [10/sec, 1/sec, 1/10sec, 1/60sec and 1/hour]. The table will be identical to the tm table and will contain a histogram on pname (= packet name). It is possible to specify how many partitions (i.e. how many different pnames) to be loaded for each frequency and the time duration of the data.

Options¶

--dbDir <DIR>¶

Database directory.

--sizeMB <SIZE>¶

This option is only valid for the compact command.

Target size of each SST file in MB (default is 256 MB).

--baseTime <TIME>¶

This option is only valid for the bench command.

Start inserting data with this time. Default: 2017-01-01T00:00:00

--count <COUNT>¶

This option is only valid for the bench command.

The partition counts for the 5 frequencies: [10/sec, 1/sec, 1/10sec, 1/60sec and 1/hour]. It has to be specified as a string (use quotes).

--duration <HOURS>¶

This option is only valid for the bench command.

The duration in hours of the simulated data. Default: 24