# Module Spacetime.Snapshot

    module Snapshot: sig .. end

    val take : ?time:float -> Spacetime.Series.t -> unit

`take series` takes a snapshot of the profiling annotations on the values in the minor and major heaps, together with GC stats, and write the result to the `series` file. This function triggers a minor GC but does not allocate any memory itself. If the optional `time` is specified, it will be used instead of the result of `Sys.time` as the timestamp of the snapshot. Such `time`s should start from zero and be monotonically increasing. This parameter is intended to be used so that snapshots can be correlated against wall clock time (which is not supported in the standard library) rather than elapsed CPU time.