OpenJDK rebuilding on windows takes a long time (original) (raw)

Dmitry Samersoff dmitry.samersoff at oracle.com
Fri Feb 15 10:58:00 UTC 2013

Ioi,

Approx the same task on 8GB CoreI5 laptop (Gentoo Linux, XFS, SSD drive), takes about a minute:

real 1m14.854s user 1m43.881s sys 0m6.344s

So the problem may reside in IO speed of the virtual environment.

-Dmitry

On 2013-02-15 06:04, Ioi Lam wrote:

On 02/14/2013 02:24 AM, Alexander Scherbatiy wrote:

On 2/13/2013 8:45 PM, Kelly O'Hair wrote:

You are pointing at the fastdebug jdk as your boot jdk, why?

The official boot jdk for jdk8 is jdk7u7 we cannot guarantee anything else will work, although it should, when tracking down issues like this, you need to narrow down all the possible differences. I have no idea at this time what the 'sync state' is with the awt team forest. My recommendation would be to clone the official jdk8/jdk8 forest, which can be assumed to work since RE should have built it, or any integrator pushing changes into it should have built it. Create 2 forests of so you can do separate experiments on each. The question was about time rebuilding JDK after a small change. What time does it take to rebuild the official jdk8/jdk8 forest with default options after small change in the java file like javax.swing.JFrame ? FYI: I am running on Oracle Enterprise Linux 5.0 with official jdk1.7.009 as my boot jdk. It's a virtual host with Xeon E5-2690 (only 2 cores allocated) and 12 GB RAM. JDK sources is put on local disk. A one-liner change in URLClassLoader.java takes about 4 minutes. I didn't specify sjavac when running configure. ----- Build times ------- Start 2013-02-14 12:12:14 End 2013-02-14 12:16:13 00:00:00 corba 00:00:01 demos 00:00:12 hotspot 00:00:23 images 00:00:00 jaxp 00:00:00 jaxws 00:03:23 jdk 00:00:00 langtools 00:03:59 TOTAL ------------------------- Finished building Java(TM) for target 'images' Is there an option in the makefiles to compile ONLY the .java file that's changed (assuming I know the changes won't affect other classes)? - Ioi Is sjavac are enabled by default now in the official jdk8/jdk8? If no, what time does it take to rebuild the JDK with the --enable-sjavac option? Thanks, Alexandr. Then do the build from the root with a 7u7 jdk in your PATH (no need for the --with-boot-jdk option). Do a build without --enable-sjavac on one forest, then with it on the other. -kto On Feb 13, 2013, at 3:38 AM, Alexander Scherbatiy wrote:

On 2/11/2013 4:03 PM, Erik Joelsson wrote: The long term solution to this is sjavac. I do not know if it has made it into that forest yet. You can try by adding --enable-sjavac to configure and do a clean build. If the build works, you have it, and incremental builds will be much faster. I tried to use the --enable-sjavac option and JDK 7 and 8 as a boot JDK. --with-boot-jdk=/cygdrive/c/Sun/Tools/JDK/jdk7/7u14/b10/jdk1.7.014/fastdebug --with-target-bits=32 --enable-sjavac gives compilation error

--with-boot-jdk=/cygdrive/c/Sun/Tools/JDK/jdk8/b75/jdk1.8.0/fastdebug --with-target-bits=32 --enable-sjavac gives "OutOfMemoryError: Java heap space" error. The log files are attached. Thanks, Alexandr.

/Erik

On 2013-02-11 12:22, Alexander Scherbatiy wrote: On 2/8/2013 6:46 PM, Erik Joelsson wrote: Ccache is not supported on windows since it doesn't work with visual studio AFAIK.

What kind of change did you do? Was it in native code or java and in which repository? I use the http://hg.openjdk.java.net/jdk8/awt repository, edit java code and build the jdk. To reproduce the issue: - open the javax.swing.JFrame class and add a comment line: // a comment - build jdk ----- Build times ------- Start 2013-02-11 15:09:55 End 2013-02-11 15:17:08 00:00:03 corba 00:00:02 hotspot 00:00:01 jaxp 00:00:03 jaxws 00:06:54 jdk 00:00:02 langtools 00:07:13 TOTAL ------------------------- My environment: OS: Windows 7 Professional, x64 Processor - Intel Core i7 Memory - 8 GB The log file is attached. Thanks, Alexandr. /Erik

<jdk7log.txt><jkd8log.txt>

-- Dmitry Samersoff Oracle Java development team, Saint Petersburg, Russia

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