Erlang/OTP 18.3 has been released

March 16, 2016 · by Henrik Nord

Some highlights of the release are:

  • New statistics info about runnable and active processes & ports.  Call erlang:statistics with total_run_queue_lengths | run_queue_lengths | total_active_tasks | active_tasks.
  • Time warp improvements: dbg:p/2 and erlang:trace/3 with monotonic_timestamp strict_monotonic_timestamp.
  • Introduced a validation callback for heart.
  • The module overload in sasl has been deprecated.
  • ~90 contributions since 18.2

You can find the Release Notes with more detailed info at

You can download the full source distribution from

Note: To unpack the TAR archive you need a GNU TAR compatible program. For installation instructions please read the README that is part of the distribution.

You can also find the source code at in the official Erlang repository. Git tag OTP-18.3

The Windows binary distributions can be downloaded from

You can also download the complete HTML documentation or the Unix manual files

You can also read the documentation on-line here:  (see the Release Notes mentioned above for release notes which  are not updated in the doc, but the new functionality is)

We also want to thank those that sent us patches, suggestions and bug reports.

The Erlang/OTP Team at Ericsson