There is insufficient memory for the Java Runtime Environment to continue.

 

Problem

環境：Linux VM_43_129_centos 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Architecture:          x86_64
CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 1 Core(s) per socket: 2 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 63 Model name: Intel(R) Xeon(R) CPU E5-26xx v3 Stepping: 2 CPU MHz: 2294.686 BogoMIPS: 4589.37 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 4096K NUMA node0 CPU(s): 0,1

• Tomcat 啟動報日志：

There is insufficient memory for the Java Runtime Environment to continue.

 

 

內存不夠用了！。？，可是，那可是31個G呀~

• free -h 查看內存使用情況：

 

可用內存僅剩305M

分析是tomcat項目啟動太多

• ps -ef |grep tomcat 查看Tomcat相關進程：

 

可以看到，Tomcat仍有多個進程在運行。

Solution

手動kill對應的pid，再次 free -h 查看內存使用情況：

 

可用內存瞬間恢復，嘗試啟動Tomcat，成功~