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<span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">Hi all,</span></div>
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<span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"><br>
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<span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">We hit crashes pretty constantly when the GC is high when using CMS GC. We switched to G1GC but it still crashes at the same places. It also crashes with the newest
version of JDK. Anybody has a clue how to investigate why? </span><br>
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The call stack for G1GC is:</div>
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<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#0<span>
</span>0x00007fcb7d665067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#1<span>
</span>0x00007fcb7d666448 in __GI_abort () at abort.c:89</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#2<span>
</span>0x00007fcb7cf78ba9 in os::abort(bool) (dump_core=<optimized out>) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os/linux/vm/os_linux.cpp:1509</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#3<span>
</span>0x00007fcb7d12fff4 in VMError::report_and_die() (this=this@entry=0x7fcb5f8cc660) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/utilities/vmError.cpp:1060</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#4<span>
</span>0x00007fcb7d1307c7 in crash_handler(int, siginfo_t*, void*) (sig=11, info=0x7fcb5f8cc8b0, ucVoid=0x7fcb5f8cc780) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os/linux/vm/vmError_linux.cpp:106</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#5<span>
</span>0x00007fcb7e018890 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#6<span>
</span>0x00007fcb7cf690c3 in oopDesc::print_on(outputStream*) const (this=0x7fb629d4b7a8, st=0x7fcb5f8cd410) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/oop.cpp:43</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#7<span>
</span>0x00007fcb7cf8342b in os::print_register_info(outputStream*, void*) (st=0x7fcb5f8cd410, context=0x7fcb5f8cd680) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp:847</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#8<span>
</span>0x00007fcb7d12ee98 in VMError::report(outputStream*) (this=0x7fcb5f8cd510, st=st@entry=0x7fcb5f8cd410) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/utilities/vmError.cpp:542</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#9<span>
</span>0x00007fcb7d12fc6d in VMError::report_and_die() (this=this@entry=0x7fcb5f8cd510) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/utilities/vmError.cpp:971</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#10 0x00007fcb7cf827f7 in JVM_handle_linux_signal(int, siginfo_t*, void*, int) (sig=11, info=0x7fcb5f8cd7b0, ucVoid=0x7fcb5f8cd680, abort_if_unrecognized=<optimized
out>)</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures"><span>
</span>at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp:541</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#11 0x00007fcb7cf75f58 in signalHandler(int, siginfo_t*, void*) (sig=11, info=0x7fcb5f8cd7b0, uc=0x7fcb5f8cd680) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os/linux/vm/os_linux.cpp:4432</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#12 0x00007fcb7e018890 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#13 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (this=0x7fb629d4b968) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/oop.inline.hpp:76</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#14 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (this=0x7fb629d4b968) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/oop.inline.hpp:492</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#15 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (task_card_bm=0x7fcb740d6bb0, marked_bytes_array=0x7fcb740e5860, hr=0x7fcb7763e500, obj=0x7fb629d4b968,
this=0x7fcb740cb730)</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures"><span>
</span>at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:133</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#16 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (task_card_bm=0x7fcb740d6bb0, marked_bytes_array=0x7fcb740e5860, hr=0x7fcb7763e500, obj=0x7fb629d4b968,
this=0x7fcb740cb730)</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures"><span>
</span>at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:146</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#17 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (hr=0x7fcb7763e500, obj=0x7fb629d4b968, this=0x7fcb740f3e70) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:293</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#18 0x00007fcb7cb4bea8 in CMTask::deal_with_reference(oopDesc*) (this=0x7fcb740f3e70, obj=0x7fb629d4b968) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:362</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#19 0x00007fcb7cf5c761 in ObjArrayKlass::oop_oop_iterate_nv(oopDesc*, G1CMOopClosure*) (this=0x7fcb5f8cddc0, p=0x7f9356a5b588) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp:124</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#20 0x00007fcb7cf5c761 in ObjArrayKlass::oop_oop_iterate_nv(oopDesc*, G1CMOopClosure*) (this=<optimized out>, obj=<optimized out>, closure=0x7fcb5f8cddc0)</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures"><span>
</span>at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/objArrayKlass.cpp:556</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#21 0x00007fcb7cb44400 in CMTask::drain_local_queue(bool) (blk=<optimized out>, this=0x7f92da000000) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/oop.inline.hpp:735</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#22 0x00007fcb7cb44400 in CMTask::drain_local_queue(bool) (obj=0x7f92da000000, this=0x7fcb740f3e70) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp:3520</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#23 0x00007fcb7cb44400 in CMTask::drain_local_queue(bool) (obj=0x7f92da000000, this=0x7fcb740f3e70) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.hpp:1174</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#24 0x00007fcb7cb44400 in CMTask::drain_local_queue(bool) (this=0x7fcb740f3e70, partially=partially@entry=true) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp:3930</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#25 0x00007fcb7cb4b32a in CMBitMapClosure::do_bit(unsigned long) (partially=true, this=<optimized out>) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/oops/klass.inline.hpp:65</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#26 0x00007fcb7cb4b32a in CMBitMapClosure::do_bit(unsigned long) (this=this@entry=0x7fcb5f8cdda0, offset=offset@entry=910241497) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp:3554</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#27 0x00007fcb7cb46cc9 in CMTask::do_marking_step(double, bool, bool) (mr=..., cl=0x7fcb5f8cdda0, this=0x7fcb740cb7b8) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:179</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#28 0x00007fcb7cb46cc9 in CMTask::do_marking_step(double, bool, bool) (this=this@entry=0x7fcb740f3e70, time_target_ms=10, do_termination=do_termination@entry=true,
is_serial=is_serial@entry=false)</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures"><span>
</span>at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp:4305</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#29 0x00007fcb7cb4caa3 in CMConcurrentMarkingTask::work(unsigned int) (this=0x7fcb642f1d60, worker_id=1) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp:1131</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#30 0x00007fcb7d14c39a in GangWorker::loop() (this=0x7fcb740d0000) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/share/vm/utilities/workgroup.cpp:329</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#31 0x00007fcb7cf77b62 in java_start(Thread*) (thread=0x7fcb740d0000) at /srv/jdk/openjdk-8-8u171-b11/src/hotspot/src/os/linux/vm/os_linux.cpp:790</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#32 0x00007fcb7e011064 in start_thread (arg=0x7fcb5f8ce700) at pthread_create.c:309</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin:0px; font:12px "Andale Mono"; color:rgb(23,131,5); background-color:rgb(26,26,26); margin:0px; background-color:rgb(26,26,26)">
<span style="font-variant-ligatures:no-common-ligatures; font-variant-ligatures:no-common-ligatures">#33 0x00007fcb7d71862d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111</span></p>
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