GCJ as Java SDK, dead, long live IcedTea!

davidgurvich · Veteran Joined: 23 Apr 2004 Posts: 1063

New addition to common problems fixed the issue

geki · Posted: Wed Aug 30, 2006 11:16 pm Post subject:

I hit an annoying bug in gcj-4.2:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28096

edit
another nasty workaround. you are a lucky one if your cpu got sse2 (for double precision instructions).
sse will not suffice I guess. the double precision instructions are missing there.
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geki · Posted: Thu Aug 31, 2006 12:05 pm Post subject:

I arrived at my last package to test with gcj-4.2 before keywording. :twisted:

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Child_of_Sun_24 · l33t Joined: 28 Jul 2004 Posts: 601

Hi @all

I had got an interesting Problem with gcj-jdk-4.1:

I have Compiled all the stuff for Azureus 2.5.0.0 with the jdk, and it runs very well (A big thank you to all that developed it) but everytime i started Azureus the Process gij (Which is from the jdk package) steals about 65% of my cpu (I have seen this with top) But not only when Azureus starts, it uses it during azureus runs.

My System seems to work normal, so i haven't seen it for a while, but then i tried to start watching a movie on my pc, and then it was terrible, mplayer said that my System is to slow and lags, xine lags, and so on.

Now i tried the actual gcj-4.2.0_alpha20060826 snapshot and it works great, gij only uses 65% during Azureus startup and the it goes down to 3.5%, and i can watch movies normally.

Only wanted to say it, because i think it's a bug in 4.1.1, when you need some additional infos then tell me what you need and i will tell it.

CoS24

geki · Posted: Thu Aug 31, 2006 2:58 pm Post subject:

That is known. gij-4.1.1 increased to 100% after half a day / day.
Though, mplayer still worked fine here.

gcj-4.2 has many improvements. though, two very annoying bugs.
I hope when some distros move to gcj-4.2 they will be fixed.
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Child_of_Sun_24 · l33t Joined: 28 Jul 2004 Posts: 601

Ok, that's good, will it be fixed ?

And another Question, which bugs does 4.2.0 have ?

Thanks,

CoS24

geki · Posted: Thu Aug 31, 2006 5:47 pm Post subject:

I did not run azureus long enough.
for these two gcj-4.2 bugs see first post.
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Child_of_Sun_24 · l33t Joined: 28 Jul 2004 Posts: 601

Ok, have seen it, but i don't understand it, but i hope it won't disturb me with azureus, until now it runs really great. :-)

CoS24

LinuxMan · Posted: Fri Sep 01, 2006 7:18 pm Post subject:

Hello. I use gcj-4.1.1 from overlay. My system is AMD64 3000+, 1024MB RAM and 1024MB SWAP. When i try to compile azureus-2.5.0.0 it fine compile Azureus2.jar but when they build native library compiler eats all my ram and swap and after 3 hours give me a hard lock

. All others java programs compile fine and fast. Here is my log:

geki · Posted: Fri Sep 01, 2006 7:49 pm Post subject:

I built 2.4.0.2 on my laptop, p4m/1.6GHz 512MB ram/swap in 90mins.

though, not in X. still, you guys manage it to fail with double sized ram/swap.
I am impressed.

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geki · Posted: Fri Sep 01, 2006 8:03 pm Post subject:

well, what I mean is:
- you could try w/o X running
- otherwise edit the ebuild, drop the '900' from skip-cachejar check, redigest

what else i am wondering about

LinuxMan · Posted: Fri Sep 01, 2006 8:05 pm Post subject:

So i posted there becouse i think that something broken
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LinuxMan · Posted: Fri Sep 01, 2006 8:13 pm Post subject:

1) Reinstall ant-core
2) Change ebuild and redigest
3) Got Total time: 1 minute 11 seconds
4) Ctrl+C
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LinuxMan · Posted: Sat Sep 02, 2006 1:20 pm Post subject:

Ok. Today i try an experiment. Run system without any daemons and run emerge in 12:56(GMT +2). Emerge ended in 16:06(also GMT +2). Here is log:

geki · Posted: Sat Sep 02, 2006 1:24 pm Post subject:

What are your cflags?
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LinuxMan · Posted: Sat Sep 02, 2006 1:27 pm Post subject:

CFLAGS="-O2 -march=k8 -fomit-frame-pointer -pipe -fno-ident -frename-registers -msse3"
CXXFLAGS="${CFLAGS} -fvisibility-inlines-hidden"
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=both"
I think these not very aggressive

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geki · Posted: Sat Sep 02, 2006 1:33 pm Post subject:

nothing that blows up code.
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LinuxMan · Posted: Sat Sep 02, 2006 1:43 pm Post subject:

So what i need to do? Maybe azureus-2.5 broken? Or i need update gcj to 4.2.0alpha?
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geki · Posted: Sat Sep 02, 2006 1:48 pm Post subject:

nothing is broken. may be oc or bad ram?!

what you see is when you do not have enough ram.

I wonder what -fno-ident is useful for...
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LinuxMan · Posted: Sat Sep 02, 2006 1:54 pm Post subject:

LinuxMan · Posted: Sat Sep 02, 2006 6:34 pm Post subject:

Ok. I try updaye gcj to 4.2.0, but ebuild of both gcj and gcj-jdk depend on fastjar package, but i can't find they not in portage, not in overlays. Where is this ebuild? If build gcj without fastjar, gcj don't work normal
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Uzytkownik · Guru Joined: 31 Oct 2004 Posts: 399 Location: Bay Area, US

Child_of_Sun_24 · l33t Joined: 28 Jul 2004 Posts: 601

@LinuxMan

I have had this Problem with gcc-4.2.0, i don't know how i have solved it, but i had to switch often with java-config-1, java-config-2 and gcj-config, during the different configs, i have rebooted my System twice.

At the end the Problem was solved.

And fastjar, is in the java-experimental-overlay:

svn co http://overlays.gentoo.org/svn/proj/java/java-experimental-overlay/

Think you must set it in front of migrated-java-experimental-overlay in the make.conf.

CoS24

LinuxMan · Posted: Sun Sep 03, 2006 9:54 am Post subject:

Thank you, Child_of_Sun_24 and Uzytkownik. Btw, in fastjar keyword is ~x86. I think that need add ~amd64
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LinuxMan · Posted: Sun Sep 03, 2006 10:33 am Post subject:

Ok. I update gcj to 4.2.0. Now any program compiled with these gcj don't. They say:
/lib/libgcc_s.so.1: version `GCC_4.2.0' not found (required by /opt/gcj-4.2.0_alpha20060826/lib/libgcj.so.

My GCC is 4.1.1 and i don't wan't to update to unstable version
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