Module Index.Stats

type t = {
mutable bytes_read : int;
mutable nb_reads : int;
mutable bytes_written : int;
mutable nb_writes : int;
mutable nb_merge : int;
mutable nb_replace : int;
mutable replace_times : float list;
}

The type for stats for an index I.

  • bytes_read is the number of bytes read from disk;
  • nb_reads is the number of reads from disk;
  • bytes_written is the number of bytes written to disk;
  • nb_writes is the number of writes to disk;
  • nb_merge is the number of times a merge occurred;
  • nb_replace is the number of calls to I.replace;
  • replace_times lists how much time replace operations took. Each element is an average of n consecutive replaces, where n is the sampling_interval specified when calling end_replace.
val reset_stats : unit -> unit
val get : unit -> t
val add_read : int -> unit
val add_write : int -> unit
val incr_nb_merge : unit -> unit
val incr_nb_replace : unit -> unit
val start_replace : unit -> unit
val end_replace : sampling_interval:int -> unit