我正在使用 Ubuntu 10.04.4，当我使用此命令启动 openNMS 时：
service opennms start:
我可以看到很多这样的过程：
ps -ef | grep opennms
oot 13699 1 14 11:58 pts/1 00:00:42 /usr/lib/jvm/java-6-sun/bin/java -Djava.endorsed.dirs=/usr/share/opennms/lib/endorsed -Dopennms.home=/usr/share/opennms -Dcom.sun.management.jmxremote.port=18980 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Xmx1024m -XX:+HeapDumpOnOutOfMemoryError -XX:MaxPermSize=128m -jar /usr/share/opennms/lib/opennms_bootstrap.jar start
postgres 13829 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53749) idle
postgres 13830 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53750) idle
postgres 13831 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53751) idle
postgres 13834 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53752) idle
postgres 13835 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53753) idle
postgres 13838 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53754) idle
postgres 13839 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53755) idle
postgres 13841 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53756) idle
postgres 13843 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53757) idle
postgres 13845 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53758) idle
postgres 13847 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53759) idle
postgres 13849 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53760) idle
postgres 13852 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53761) idle
postgres 13854 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53762) idle
postgres 13856 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53763) idle
postgres 13858 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53764) idle
postgres 13860 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53765) idle
postgres 13862 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53766) idle
postgres 13863 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53767) idle
postgres 13865 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53768) idle
postgres 13867 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53769) idle
postgres 13869 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53770) idle
postgres 13872 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53771) idle
postgres 13874 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53772) idle
postgres 13875 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53773) idle
postgres 13878 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53774) idle
postgres 13880 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53775) idle
postgres 13881 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53776) idle
postgres 13884 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53777) idle
postgres 13886 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53778) idle
postgres 13887 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53779) idle
postgres 13890 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53780) idle
postgres 13892 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53781) idle
postgres 13894 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53782) idle
postgres 13896 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53783) idle
postgres 13898 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53784) idle
postgres 13900 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53785) idle
postgres 13901 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53786) idle
postgres 13904 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53787) idle
postgres 13906 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53788) idle
postgres 13908 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53789) idle
postgres 13910 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53790) idle
postgres 13913 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53791) idle
postgres 13914 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53792) idle
postgres 13916 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53793) idle
postgres 13917 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53794) idle
postgres 13919 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53795) idle
postgres 13922 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53796) idle
postgres 13923 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53797) idle
postgres 13925 9217 0 11:58 ? 00:00:00 postgres: opennms opennms 127.0.0.1(53798) idle
我想知道为什么我有很多进程，它们是无害的吗？我该如何避免这种情况？
答案1
这在您的上一个问题. 既然你知道，你为什么会认为这是一个问题OpenNMS 依赖于 PostgreSQL？
答案2
您看到的是postgres进程，而不是opennms进程。您可以根据需要调整 Postgres 设置（以减少进程数），但也有大量共享内存，这使得内存使用量看起来比实际高得多。因此，除非您遇到性能下降或其他问题，否则我认为这不是问题。