timing-sensitive.rst

Timing sensitive environments

Overview

Timing sensitive environments include e.g. games. In these environments long blocking times are problematic. Stop-and-go garbage collection is also a potential issue.

This document describes suggested feature options for reducing Duktape latency in timing sensitive environments.

The following genconfig option file template enables most timing sensitivity related options: config/examples/timing_sensitive.yaml.

Suggested feature options

• Use the default memory management settings (reference counting and mark-and-sweep) but enable DUK_OPT_NO_VOLUNTARY_GC to eliminate mark-and-sweep pauses. Use explicit GC calls (either duk_gc() from C or Duktape.gc() from Ecmascript) when possible to collect circular references.