系统优化工作手册

1、. 系统优化1 系统调优1.1 os调优注意：调优后重启操作系统。灰色部分为未调整项参数缺省值调优值调优方法open files（单进程可打开最大文件数目）102410240ulimit n 10240ulimit a （可以列出所有受限参数）1.2 portal调优参数缺省值调优值调优方法(控制台)initial heap size-512serverapplication servers websphere_portal server infrastructure: java and process management process definition java virtual ma

2、chinemaximum heap size7681024同上thread pool minimum size10100servers application servers websphere portaladditional properties: thread pools web container thread poolthread pool maximum size50200同上session timeout30120serverapplication servers websphere_portal container settings: web container setting

3、s session management session timeoutltpa timeout1201200security-authentication mechanisms-ltpalog file rotation max file size110application servers websphere_portal logging and tracing jvm logssystemout.log maximum number of historical log files120同上systemerr.loglog max size110同上systemerr.logmaximum

4、 number of historical log files110同上1.3 其他调优1.3.1 db2对于portal6，数据库连接池（7个库）：connecttimeout：600 bufferpool：2500 参数缺省值调优值buffpage2500dbheap4000sortheap2564000maxlocks1040num_iocleaners111num_ioservers311方法db2 get db config for wpsdbn | grep -i maxapplsdb2 update db config for wpsdbn using maxappls 751.

5、3.2 idsldap实例名下的sizelimit：5000-20000实例参数（在实例配置文件中）参数名缺省值调优值ibm-slapdaclcachesize25000250000ibm-slapdentrycachesize25000250000ibm-slapdfiltercachesize25000250000ibm-slapdsizelimit5005000ibm-slapdfiltercachebypasslimit1007500数据库参数参数名缺省值调优值ldapdb2库的buff pool2500ldap数据初始化，或者有重大变更后，通过xldapcfg图形界面优化数据库，对性能有一些提高，可以多执行几次。1.3.3 ihs（本项目不存在，略）参考调优项： 参数名缺省值调优值maxclients150800 1.3.4 wasdata source namemax connectionsmin connections缺省值调优值缺省值调优值wpsdbds