Hi Tim, On 19/09/2017 6:50 PM, Yu, Tim (NSB - CN/Chengdu) wrote:
Hi OpenJDK dev group
This is better discussed on hotspot-dev, so redirecting there.
We meet one issue that the VM failed to initialize. The error log is as below. We checked both memory usage and thread number. They do not hit the limit. So could you please help to confirm why "java.lang.OutOfMemoryError: unable to create new native thread" error occurs? Many thanks.
Unfortunately there is no way to tell. As you indicate there appears to be enough memory, and there appear to be enough threads/processes available for creation.
Does this happen regularly or was this a one-of failure? You really need to see the exact state of the machine at the time this happened.
David
" on Sep 18 11:05:04 EEST 2017 2 or first INFO log missing: Error occurred during initialization of VM java.lang.OutOfMemoryError: unable to create new native thread Error occurred during initialization of VM java.lang.OutOfMemoryError: unable to create new native thread 1. Memory Usage MemFree: 898332 kB From below core file generated during OMM, it can be seen about 900M physical memory available during that time. 2 Thread number sh-4.1$ ps -eLf|wc -l 5326 sh-4.1$ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 43497 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 43497 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Br, Tim
