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Tomcat优化-压力测试四
调整后的方案:
操作系统Windows2003server版本
JDK1.4
Tomcat5.0.30
数据库连接池C3P0
仅采用负载平衡,不采用集群。
软件的配置:
Apache配置:主要配置httpd.conf和新增加的文件workers.properties
Httpd.conf:
#一个连接的最大请求数量
MaxKeepAliveRequests10000
#NT环境,只能配置这个参数来提供性能
#每个进程的线程数,最大1920。NT只启动父子两个进程,不能设置启动多个进程
ThreadsPerChild1900
每个子进程能够处理的最大请求数
MaxRequestsPerChild10000
#加载mod_jk
#
LoadModulejk_modulemodules/mod_jk.so
#
#配置mod_jk
#
JkWorkersFileconf/workers.properties
JkLogFilelogs/mod_jk.log
JkLogLevelinfo
#请求分发,对jsp文件,.do等动态请求交由tomcat处理
DocumentRoot"C:/Apache/htdocs"
JkMount/*.jsploadbalancer
JkMount/*.doloadbalancer
JkMount/servlet/*loadbalancer
#关掉主机Lookup,如果为on,很影响性能,可以有10多秒钟的延迟。
HostnameLookupsOff
#缓存配置
LoadModulecache_modulemodules/mod_cache.so
LoadModuledisk_cache_modulemodules/mod_disk_cache.so
LoadModulemem_cache_modulemodules/mod_mem_cache.so
CacheForceCompletion100
CacheDefaultExpire3600
CacheMaxExpire86400
CacheLastModifiedFactor0.1
CacheEnabledisk/
CacheRootc:/cacheroot
CacheSize327680
CacheDirLength4
CacheDirLevels5
CacheGcInterval4
CacheEnablemem/
MCacheSize8192
MCacheMaxObjectCount10000
MCacheMinObjectSize1
MCacheMaxObjectSize51200
worker.Properties文件
#
#workers.properties,可以参考
::URL::http://jakarta.apache.org/tomcat/connectors-doc/config/workers.html
#InUnix,weuseforwardslashes:
ps="
#listtheworkersbyname
worker.list=tomcat1,tomcat2,loadbalancer
#------------------------
#Firsttomcatserver
#------------------------
worker.tomcat1.port=8009
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13
#Specifythesizeoftheopenconnectioncache.
#worker.tomcat1.cachesize
#
#Specifiestheloadbalancefactorwhenusedwith
#aloadbalancingworker.
#Note:
#---->lbfactormustbe>0
#---->Lowlbfactormeanslessworkdonebytheworker.
worker.tomcat1.lbfactor=900
#------------------------
#Secondtomcatserver
#------------------------
worker.tomcat1.port=8009
worker.tomcat1.host=202.88.8.101
worker.tomcat1.type=ajp13
#Specifythesizeoftheopenconnectioncache.
#worker.tomcat1.cachesize
#
#Specifiestheloadbalancefactorwhenusedwith
#aloadbalancingworker.
#Note:
#---->lbfactormustbe>0
#---->Lowlbfactormeanslessworkdonebytheworker.
worker.tomcat1.lbfactor=2000
#------------------------
#LoadBalancerworker
#------------------------
#
#Theloadbalancer(typelb)workerperformsweightedround-robin
#loadbalancingwithstickysessions.
#Note:
#---->Ifaworkerdies,theloadbalancerwillcheckitsstate
#onceinawhile.Untilthenallworkisredirectedtopeer
#worker.
worker.loadbalancer.type=lb
worker.loadbalancer.balanced_workers=tomcat1,tomcat2
#
#ENDworkers.properties
#