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 jdk1.7.0_09 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/jdk1.7.0_14/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 >>>>>>> >>>> >>>> <jdk7_log.txt><jkd8_log.txt> >> > -- Dmitry Samersoff Oracle Java development team, Saint Petersburg, Russia * Give Rabbit time, and he'll always get the answer
