Well, well, well. Installing -debuginfo resulted in a successful run with and without using GDB. I uninstalled -debuginfo and the exception came back.
[root@ip-172-30-0-41 jvm]# gdb --args jmap -heap `pgrep java` GNU gdb (GDB) Amazon Linux (7.6.1-64.33.amzn1) Reading symbols from /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/bin/jmap...Reading symbols from /usr/lib/debug/usr/lib/jvm/java-1 .7.0-openjdk-1.7.0.131.x86_64/bin/jmap.debug...done. done. (gdb) run Starting program: /usr/bin/jmap -heap 4745 [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Missing separate debuginfo for /usr/lib64/libstdc++.so.6 Try: yum --enablerepo='*debug*' install /usr/lib/debug/.build-id/43/4c339faa62ca4e59eb71572a60967fe54a69ad.debug Missing separate debuginfo for /lib64/libgcc_s.so.1 Try: yum --enablerepo='*debug*' install /usr/lib/debug/.build-id/3f/d5f89de59e124ab1419a0bd16775b4096e84fd.debug [New Thread 0x7ffff7fea700 (LWP 3972)] [New Thread 0x7ffff4d67700 (LWP 3973)] [New Thread 0x7ffff4c66700 (LWP 3974)] [New Thread 0x7fffea7db700 (LWP 3975)] [New Thread 0x7fffea6da700 (LWP 3976)] [New Thread 0x7fffea5d9700 (LWP 3977)] [New Thread 0x7fffea4d8700 (LWP 3978)] [New Thread 0x7fffea3d7700 (LWP 3979)] [New Thread 0x7fffea2d6700 (LWP 3980)] [New Thread 0x7fffea1d5700 (LWP 3981)] [New Thread 0x7fffea0d4700 (LWP 3982)] Attaching to process ID 4745, please wait... [New Thread 0x7fffe9bc0700 (LWP 3983)] Debugger attached successfully. Server compiler detected. JVM version is 24.131-b00 using thread-local object allocation. Garbage-First (G1) GC with 2 thread(s) Heap Configuration: MinHeapFreeRatio = 25 MaxHeapFreeRatio = 70 MaxHeapSize = 2684354560 (2560.0MB) NewSize = 1363144 (1.2999954223632812MB) MaxNewSize = 17592186044415 MB OldSize = 5452592 (5.1999969482421875MB) NewRatio = 2 SurvivorRatio = 5 PermSize = 402653184 (384.0MB) MaxPermSize = 536870912 (512.0MB) G1HeapRegionSize = 1048576 (1.0MB) Heap Usage: G1 Heap: regions = 2112 capacity = 2214592512 (2112.0MB) used = 764957720 (729.5205307006836MB) free = 1449634792 (1382.4794692993164MB) 34.54169179453994% used G1 Young Generation: Eden Space: regions = 110 capacity = 1335885824 (1274.0MB) used = 115343360 (110.0MB) free = 1220542464 (1164.0MB) 8.634222919937205% used Survivor Space: regions = 37 capacity = 38797312 (37.0MB) used = 38797312 (37.0MB) free = 0 (0.0MB) 100.0% used G1 Old Generation: regions = 598 capacity = 839909376 (801.0MB) used = 610817048 (582.5205307006836MB) free = 229092328 (218.4794692993164MB) 72.72416113616524% used Perm Generation: capacity = 402653184 (384.0MB) used = 214903848 (204.94828033447266MB) free = 187749336 (179.05171966552734MB) 53.37194800376892% used 94969 interned Strings occupying 9731712 bytes. [New Thread 0x7fffe9abf700 (LWP 3984)] [Thread 0x7fffea0d4700 (LWP 3982) exited] [Thread 0x7fffe9abf700 (LWP 3984) exited] [Thread 0x7fffea3d7700 (LWP 3979) exited] [Thread 0x7fffea7db700 (LWP 3975) exited] [Thread 0x7ffff4c66700 (LWP 3974) exited] [Thread 0x7ffff4d67700 (LWP 3973) exited] [Thread 0x7ffff7fea700 (LWP 3972) exited] [Thread 0x7fffe9bc0700 (LWP 3983) exited] [Thread 0x7fffea1d5700 (LWP 3981) exited] [Thread 0x7fffea2d6700 (LWP 3980) exited] [Thread 0x7fffea4d8700 (LWP 3978) exited] [Thread 0x7fffea5d9700 (LWP 3977) exited] [Thread 0x7fffea6da700 (LWP 3976) exited] [Inferior 1 (process 3968) exited normally] Missing separate debuginfos, use: debuginfo-install glibc-2.17-157.169.amzn1.x86_64 zlib-1.2.8-7.18.amzn1.x86_64 ________________________________ If you wish to view the CPA Global group email disclaimer, please click here<https://www.cpaglobal.com/Privacy/CPAGlobalEmailDisclaimer/> ________________________________
