CpuUsages returns cpu usages.

DescribeReplica returns a string representation of a replica ID used in logging.

DiskStats returns the disk usage stats.

FirstError returns the first error.

GetTestDir returns the data directory to use in tests.

GZIP compress a path to a gzip file.

IORates io rates.

IsDarwin returns whether running on Darwin.

MemStats returns the mem usage stats.

NewKVTree return a kv btree.

NewShardTree returns a default Shard btree.

RAMDiskDirExist returns whether the specified directory is a mounted RAM disk,.

UnGZIP ungip file.

KVTree kv btree.

ShardItem is the Shard btree item.

ShardTree is the btree for Shard.

WriteBatch write batch.