FreeBSD The Power to Serve

FreeBSD 5.1 Release Process


This is a specific schedule for the release of FreeBSD 5.1. For more general information about the release engineering process, please see the Release Engineering section of the web site.

General discussions about the release engineering process or quality assurance issues should be sent to the public FreeBSD-qa mailing list. MFC requests should be sent to

One of the major features of FreeBSD 5.1 will be further refinement of the re-worked SMP support introduced in FreeBSD 5.0.

FreeBSD 5.1 will continue to be released from the 5-CURRENT development stream. For more details about the milestones for reaching 5-STABLE, see the 5-STABLE Roadmap page.

The current release engineering TODO list is also available. This list is updated periodically through the release cycle.


Action Expected Actual Description
-CURRENT code freeze 5 May 2003 5 May 2003 The src/ code freeze for 5.1. Commits to HEAD require approval.
5.1-BETA 5 May 2003 15 May 2003 5.1-BETA release of x86, alpha, sparc64, and ia64.
5.1-BETA2 19 May 2003 22 May 2003 Second 5.1-BETA release of x86, alpha, sparc64, and ia64.
RELENG_5_1 branched 30 May 2003 31 May 2003 Branch of src/ from HEAD for the release. Note: no branch for RELENG_5 will happen at this time.
Turn off debugging for RELENG_5_1 30 May 2003 31 May 2003 Turn off WITNESS, INVARIANTS, and malloc debugging options similar to what was done for 5.0.
First release candidate 30 May 2003 1 June 2003 x86, alpha, sparc64, and ia64 images released and uploaded to
src/ unfrozen 30 May 2003 31 May 2003 Unfreeze HEAD src. Continue to coordinate significant check-ins with in order to work towards 5-STABLE.
Ports tree tagged 30 May 2003 27 May 2003 Tentative date of RELEASE_5_1_0 tag for ports.
Version numbers bumped 2 June 2003 3 June 2003 The files listed here are updated to reflect FreeBSD 5.1.
src/ tree tagged 2 June 2003 4 June 2003 Tag the RELENG_5_1 branch with RELENG_5_1_0_RELEASE.
doc/ tree tagged 2 June 2003 30 May 2003 Tag the doc/ tree with RELEASE_5_1_0.
Final builds 2 June 2003 4 June 2003 Start x86, alpha, sparc64, ia64, and pc98 builds.
Warn 5 June 2003 5 June 2003 Heads up email to to give admins time to prepare for the load spike to come. The site administrators have frequently requested advance notice for new ISOs.
Upload to ftp-master 5 June 2003 8 June 2003 Release and packages uploaded to
FreeBSD 5.1 Released 9 June 2003 9 June 2003 FreeBSD 5.1 is announced to the mailing lists.
FreeBSD 5.1 Press Release 9 June 2003 9 June 2003 A formal press release statement is in the works and should be released at this time to the website and various tech publications.

Last modified on: May 15, 2021 by Allan Jude