Date: Mon, 04 Feb 2013 17:48:20 +0200 From: Achilleas Mantzios <achill@smadev.internal.net> To: freebsd-java@freebsd.org Subject: Re: Re: Re: Re: FreeBSD pl/java problem : backend hangs Message-ID: <3454957.mdnJNsQM6V@smadev.internal.net> In-Reply-To: <1794514.P32sUeWV4B@smadev.internal.net> References: <5933829.WYzpjKtO0p@smadev.internal.net> <2555655.RMjoVHmAxh@smadev.internal.net> <1794514.P32sUeWV4B@smadev.internal.net>
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It seems that it gets hung in JNI_CreateJavaVM.
I can write and run standalone JNI programs outside postgrsesql (even a=
s postgres user),
but when i try to run it from within postgres, then it gets hang.
Any ideas?
On =CE=94=CE=B5=CF=85 04 =CE=A6=CE=B5=CE=B2 2013 17:16:27 Achilleas Man=
tzios wrote:
> I am thinking of trying to address this problem twofold :
>=20
> 1) establish a connection with the pl/java people
> 2) trying to go back and forth from there and here to try to debug th=
e problem
>=20
> Lets wait for some recommendation/help from there, and then i'll get =
back
> to this list for more.
>=20
> On =CE=94=CE=B5=CF=85 04 =CE=A6=CE=B5=CE=B2 2013 16:09:56 Achilleas M=
antzios wrote:
> > Thanx Ronald,
> >=20
> > postgres@smadev:~> jstack 384
> > 384: Unable to open socket file: target process not responding or H=
otSpot VM not loaded
> > The -F option can be used when the target process is not responding=
> >=20
> > Also jstack -F fails as well
> > postgres@smadev:~> jstack -F 384
> > Attaching to process ID 384, please wait...
> > Exception in thread "main" java.lang.reflect.InvocationTargetExcept=
ion
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Meth=
od)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethod=
AccessorImpl.java:57)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Delegati=
ngMethodAccessorImpl.java:43)
> > at java.lang.reflect.Method.invoke(Method.java:616)
> > at sun.tools.jstack.JStack.runJStackTool(JStack.java:136)
> > at sun.tools.jstack.JStack.main(JStack.java:102)
> > Caused by: sun.jvm.hotspot.debugger.UnalignedAddressException: Tryi=
ng to read at address: 0x746f705c6c4f4867 with alignment: 4
> > at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$1.checkAli=
gnment(BsdDebuggerLocal.java:181)
> > at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.readCInteg=
er(BsdDebuggerLocal.java:478)
> > at sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(D=
ebuggerBase.java:454)
> > at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.readAddres=
s(BsdDebuggerLocal.java:423)
> > at sun.jvm.hotspot.debugger.bsd.BsdAddress.getAddressAt(Bsd=
Address.java:74)
> > at sun.jvm.hotspot.HotSpotTypeDataBase.readVMTypes(HotSpotT=
ypeDataBase.java:108)
> > at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDa=
taBase.java:85)
> > at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgen=
t.java:574)
> > at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.jav=
a:495)
> > at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent=
.java:333)
> > at sun.jvm.hotspot.tools.Tool.start(Tool.java:163)
> > at sun.jvm.hotspot.tools.JStack.main(JStack.java:86)
> >=20
> >=20
> > On =C3=8E=C2=94=C3=8E=C2=B5=C3=8F=C2=85 04 =C3=8E=C2=A6=C3=8E=C2=B5=
=C3=8E=C2=B2 2013 14:47:13 you wrote:
> > > I have no experience running java as a backend of pgsql.
> > > Can you run jstack on the backend?
> > >=20
> > > Ronald.
> > >=20
> > > On Mon, 04 Feb 2013 14:17:22 +0100, Achilleas Mantzios =20
> > > <achill@matrix.gatewaynet.com> wrote:
> > >=20
> > > > Hello community,
> > > >
> > > > I am running postgresql 9.2.2 with
> > > > openjdk version "1.6.0_32"
> > > > OpenJDK Runtime Environment (build 1.6.0_32-b25)
> > > > OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
> > > > On FreeBSD 8.3-RELEASE
> > > >
> > > > I am having trouble even running simple tests like :
> > > > CREATE FUNCTION getsysprop(VARCHAR)
> > > > RETURNS VARCHAR
> > > > AS 'java.lang.System.getProperty'
> > > > LANGUAGE java;
> > > >
> > > > SELECT getsysprop('user.home');
> > > >
> > > > When i do that, the session hangs, and have to kill -9 the back=
end.
> > > >
> > > > Searching with truss got :
> > > >
> > > > gettimeofday({1359983241.596250 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596275 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596300 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596327 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596352 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596378 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596403 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596431 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596458 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596482 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596507 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596532 },0x0) =3D 0 (0x0)
> > > > gettimeofday({1359983241.596556 },0x0) =3D 0 (0x0)
> > > > _umtx_op(0x7fffffffc7e8,0x3,0x1,0x0,0x0,0x1) =3D 0 (0x0)
> > > > sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGABRT|SIGEMT|SIGK=
ILL|SIGSYS|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCH=
LD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIG=
INFO|SIGUSR1|SIGUSR2,0x0) =20
> > > > =3D 0 (0x0)
> > > > sigprocmask(SIG_SETMASK,0x0,0x0) =3D 0 (0x0)
> > > > sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGABRT|SIGEMT|SIGK=
ILL|SIGSYS|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCH=
LD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIG=
INFO|SIGUSR1|SIGUSR2,0x0) =20
> > > > =3D 0 (0x0)
> > > > sigprocmask(SIG_SETMASK,0x0,0x0) =3D 0 (0x0)
> > > >
> > > > while ktrace gave :
> > > >
> > > > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0)
> > > > 98910 initial thread RET gettimeofday 0
> > > > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0)
> > > > 98910 initial thread RET gettimeofday 0
> > > > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0)
> > > > 98910 initial thread RET gettimeofday 0
> > > > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0)
> > > > 98910 initial thread RET gettimeofday 0
> > > > 98910 initial thread CALL gettimeofday(0x7fffffffc940,0)
> > > > 98910 initial thread RET gettimeofday 0
> > > > 98910 initial thread CALL _umtx_op(0x7fffffffc7e8,0x3,0x1,0,0=
)
> > > > 98910 initial thread RET _umtx_op 0
> > > > 98910 initial thread CALL =20
> > > > sigprocmask(SIG_BLOCK,0x7fffffffc780,0x8016167d8)
> > > > 98910 initial thread RET sigprocmask 0
> > > > 98910 initial thread CALL sigprocmask(SIG_SETMASK,0x8016167d8=
,0)
> > > > 98910 initial thread RET sigprocmask 0
> > > > 98910 initial thread CALL =20
> > > > sigprocmask(SIG_BLOCK,0x7fffffffc6e0,0x8016167d8)
> > > > 98910 initial thread RET sigprocmask 0
> > > > 98910 initial thread CALL sigprocmask(SIG_SETMASK,0x8016167d8=
,0)
> > > > 98910 initial thread RET sigprocmask 0
> > > > 98910 initial thread CALL _umtx_op(0x8f8dc4280,0x11,0,0,0)
> > > >
> > > > I found some relevant problems with FreeBSD systems hanging aft=
er an =20
> > > > _umtx_op but all those point
> > > > to threading problems that now are solved. I found nothing mode=
rn about =20
> > > > _umtx_op.
> > > >
> > > > I know FreeBSD is not a "Tier-1" platform for postgresql (nor j=
ava), but =20
> > > > this is my main platform and i'd like
> > > > to stick with this.
> > > >
> > > > Is there anything i could do to get closer to make pl/java work=
with =20
> > > > FreeBSD?
> > > >
> > > > Also read this =20
> > > > http://postgresql.1045698.n5.nabble.com/Java-VM-stalls-during-q=
uot-install-jar-quot-td3290754.html =20
> > > > thread.
> > > > Very close to my situation. JNI standalone also worked for me.
> > > >
> > > > Any hints/pointers ?
> > > >
> > > > -
> > > > Achilleas Mantzios
> > > > IT DEV
> > > > IT DEPT
> > > > Dynacom Tankers Mgmt
> > > > _______________________________________________
> > > > freebsd-java@freebsd.org mailing list
> > > > http://lists.freebsd.org/mailman/listinfo/freebsd-java
> > > > To unsubscribe, send any mail to "freebsd-java-unsubscribe@free=
bsd.org"
> > -
> > Achilleas Mantzios
> > IT DEV
> > IT DEPT
> > Dynacom Tankers Mgmt
> > _______________________________________________
> > freebsd-java@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-java
> > To unsubscribe, send any mail to "freebsd-java-unsubscribe@freebsd.=
org"
> -
> Achilleas Mantzios
> IT DEV
> IT DEPT
> Dynacom Tankers Mgmt
-
Achilleas Mantzios
IT DEV
IT DEPT
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