??????????????
???????????? ???????[ 2014/7/24 14:57:32 ] ????????
????RT<130ms?? TPS>35.
????JVM old ?????????й?????????????GC?????>30min???????????<150ms.
????CPU<70%?? load < core*1.5??
????2. ???????????
????????????????
?????????????????????1min?????3s?? ???????????
???????????????????????????
??????????shell ??????????????????????
???????nmon??????????????????
???????jconsole???JVM?????
????????????
????JVM Perm ?????????й?????????????GC?????>10min???????????<200ms.
???????????<30S
????CPU<70%?? load < core*1.5??
????3.???????з??????????
????????????????
???????jmeter??????з????????????????????з?????
??????????????????????????????????????????
????????????
????RT < ?????????????RT * 110%.
????TPS > ?????????????TPS * 90%.
??????????? < 40s??
????d. ?????????
????1. ??????????
????AVG RT = 473ms?? CMS GC = 90ms?? ????????? = 1s?? ??????δ?????
????????λ??
????dump??棬???ibm memory analyzer ??????
???????cms gc??????drools?????finalize??????Finzlize???????????????????????ù???????????ù????????????????
?????????????
????????drools???????????????drools?????????????
????2. ???????????
????CMS GC ???????????????????????崻???
????????λ??
????GC????????????68%??OLD?????1024M???????????????1024*0.68=696.32M??????JVM???????500M????????????????120M?????л???????У??????????120M???????????????????740M??????????????
?????????????
????????JVM??????????GC?????????
????????????????????????????????????????
????3. ???????з??????????
????????λ??
?????????????????????????????????н????????????????????????????н????????????????????????У?????????????????hand????????????
?????????????
??????????????????????????????y???????????????????л???????棬????????????????????????
??????????????????к??????
????3.1???????????
????????????????????????????????????????????????????????????????????
????3.1.1 ??????
????????????????????????????????????????????????Apache JMeter????????????????????
????Web - HTTP?? HTTPS
????SOAP
????Database via JDBC
????LDAP
????JMS
?????κ???java?????д???????????ο????????á?
?????????????????webservice????????soapЭ?飬?????java?????????????jmeter??????????jemter?????????????????Э?飬???????????????????????
????3.1.2???????
?????????????????????????????????????????????ú?????汾???????????????????????????????????????С???1С?????????????????????
????????????????????????п????????????????????????????????????????????????????????1?????????????????????????????漲λ??????????2?????????????′???????????????????????????????????????????????????????????Χ?????????е???????????鷳????????????????????л???mock???????Mock??????????????????????£??????????????????????????????н??????????????е???????????? 100ms?????????????????????????????mock???е????????????100ms??????????????????????????
??????????????????????????????????????????????????????????????????????????????????????db????????????????????????????;????db????????????????????????????????????????????????????????????????????????????????????????
??????
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