canal启动错误:虚拟机内存不够There is insufficient memory for the Java Runtime Environment to continue.

错误如下：## There is insufficient memory for the Java Runtime Environment to continue.# Native memory allocation (mmap) failed to map 1073741824 bytes for committing reserved memory.# Possible reasons:#Th

遗忘的大城小事

1357人浏览 · 2020-05-16 17:14:14

遗忘的大城小事 · 2020-05-16 17:14:14 发布

错误如下：

#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 1073741824 bytes for committing reserved memory.
# Possible reasons:
#   The system is out of physical RAM or swap space
#   In 32 bit mode, the process size limit was hit
# Possible solutions:
#   Reduce memory load on the system
#   Increase physical memory or swap space
#   Check if swap backing store is full
#   Use 64 bit Java on a 64 bit OS
#   Decrease Java heap size (-Xmx/-Xms)
#   Decrease number of Java threads
#   Decrease Java thread stack sizes (-Xss)
#   Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
#  Out of Memory Error (os_linux.cpp:2640), pid=28190, tid=0x00007ff86f957700
#
# JRE version:  (8.0_181-b13) (build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.181-b13 mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#

解决办法：

修改startup.sh中的如下参数：
可以根据自己的机器适当调整 -Xms -Xmx -Xmn 参数

if [ -n "$str" ]; then
        JAVA_OPTS="-server -Xms256m -Xmx256m -Xmn256m -XX:SurvivorRatio=2 -XX:PermSize=96m -XX:MaxPermSize=256m -Xss256k -XX:-UseAdaptiveSizePolicy -XX:MaxTenuringThreshold=15 -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError"
else
        JAVA_OPTS="-server -Xms256m -Xmx256m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:MaxPermSize=128m "
fi