OpenSolaris

1. Community: OS/Net (ON)
   1. Blogs
   2. Development Process
   3. Developer's Reference
      1. Introduction
      2. Prerequisites
      3. The Source Tree, part 1
      4. The Source Tree, part 2
      5. Building OpenSolaris
      6. Installing and Testing OpenSolaris
      7. Integration Procedure
      8. Best Practices and Requirements
      9. Glossary
   4. Discussions
   5. Installation (from source) Quickstart
      1. Annotated nightly(1) Mail Example
   6. Currently Known Issues
   7. CRT
      1. Advocates & Sponsors
      2. Becoming a CRT Advocate
      3. Charter
      4. RTI nits to avoid
      5. Sponsor Tasks
      6. Becoming a Sponsor
   8. Schedule
   9. ONNV Flag Days, Heads Ups, and Project Integration History
      1. All
      2. Builds 91-95
      3. Builds 86-90
      4. Builds 81-85
      5. Builds 76-80
      6. Builds 71-75
      7. Builds 66-70
      8. Builds 61-65
      9. Builds 56-60
      10. Builds 51-55
      11. Builds 46-50
      12. Builds 41-45
      13. Builds 36-40
      14. Builds 31-35
      15. Builds 26-30
      16. Builds 21-25
   10. Leaders
   11. Observers
   12. Putback Logs
   13. Developing Solaris
       1. Quality Death Spiral
   14. wx
   15. findunref and unreferenced files
   16. Bourne/Korn Shell Coding Conventions

Heads up: build parallelism

Date: Wed, 27 Feb 2008 15:37:44 -0800
From: Alexander Kolbasov <akolb at eng dot sun dot com>
To: on-all at eng dot sun dot com, onnv-gate at onnv dot eng dot sun dot com
Subject: Heads up: build parallelism

Greetings gatelings,

The putback for 

6592974 Kernel can compile in parallel with libraries
6592975 Sparc platforms can be compiled in parallel
6592976 Intel platforms can be compiled in parallel
6592977 sun4u sub-platforms can be compiled in parallel
6621861 src/tools can be built in parallel
6591900 Various sun4u platforms try to install sys symlink in usr/share/src/uts in parallel

increases the parallelism of ON builds and improves build times, especially on
SPARC systems. For example, on T2000 machine with 8GB of memory the total build
time (DEBUG + non-DEBUG + lint) went down from 5 1/2 hours to 3 1/2 hours. On
8-socket dual-core UltraSPARC IV system the build time went down from 2 1/2
hours to 1 1/2 hours. On a beefy x86 build time went down by 10-15%. All the
build machines were otherwise idle. Your actual build improvement may vary
greatly based on your specific configuration and system load.

These changes may result in extra load on the build machines and more demand on
the swap space. You may need to adjust the parallelism specified in
~/.make.machines file if you run into problems.

Also, the local builds of subdirectories under usr/src/uts is no longer
supported. You need to at least run a make in usr/src/uts directory to guarantee
that all dependencies are taken care of.

With the above changes the GCC shadow compilation is having more impact on the
build time. If you need really fast turn-around time for the build you may
disable GCC shadow compilation by setting CW_NO_SHADOW in the environment file.
Please remember to do the full build with GCC shadow compilation as part of your
pre-integration testing.

Thanks,

- Sasha