Hi All, We may need to tune ThreadStackSize [1], before we run Java applications on K8s. Default Linux JVM thread stack size is 1MB [1].
[2] http://www.oracle.com/technetwork/articles/java/ vmoptions-jsp-140102.html On Sat, Oct 28, 2017 at 2:42 PM, Prasanna Dangalla <prasa...@wso2.com> wrote: > Hi, > > Added a documentation JIRA[1] to track this. > > [1] - https://wso2.org/jira/browse/DOCUMENTATION-6243 > > Thanks > > *Prasanna Dangalla* > Senior Software Engineer, WSO2, Inc.; http://wso2.com/ > lean.enterprise.middleware > > > *cell: +94 718 11 27 51* > *twitter: @prasa77* > > On Fri, Oct 20, 2017 at 5:26 PM, Pubudu Gunatilaka <pubu...@wso2.com> > wrote: > >> Hi, >> >> Yes, this is already there in the wso2server.sh. For Kubernetes and >> other container management systems, we need to set these values as limits >> to avoid getting issues in runtime. >> >> Thank you! >> >> On Fri, Oct 20, 2017 at 4:22 PM, Lakmal Warusawithana <lak...@wso2.com> >> wrote: >> >>> Yes, you are correct. It will use default value come in wso2server.sh. >>> >>> On Fri, Oct 20, 2017 at 4:10 PM, Lakmal Warusawithana <lak...@wso2.com> >>> wrote: >>> >>>> Hi Abimaran, >>>> >>>> But not in the default docker images. Yes in K8S artifacts we have set >>>> the Xmx value. But again we need to clearly document it like why to >>>> change? how to change? ..etc. >>>> >>>> On Fri, Oct 20, 2017 at 3:41 PM, Abimaran Kugathasan <abima...@wso2.com >>>> > wrote: >>>> >>>>> Hi Lakmal, >>>>> >>>>> All of the container related images will use the default startup >>>>> script shipped in the product to boot the image up, ex [1]. And, we >>>>> are setting -Xms256m -Xmx1024m for all the products. >>>>> >>>>> -XX:MaxHeapSize option is equivalent to -Xmx. [2] >>>>> >>>>> [1]: https://github.com/wso2/kubernetes-apim/blob/2.1.0-nfs/ >>>>> base/apim/init_carbon.sh >>>>> [2]: https://docs.oracle.com/javase/8/docs/technotes/tools/w >>>>> indows/java.html >>>>> >>>>> On Fri, Oct 20, 2017 at 2:21 PM, Lakmal Warusawithana <lak...@wso2.com >>>>> > wrote: >>>>> >>>>>> Hi All, >>>>>> >>>>>> If we do not set MaxHeapSize in JVM which runs inside docker it will >>>>>> set it as 1/4 of the physical memory. But issue is, inside the docker >>>>>> it will read as total physical memory of the HOST machine rather >>>>>> taking allocated memory to that docker container. So if we do not >>>>>> properly >>>>>> set MaxHeapSize it will cause to many issues. [1] >>>>>> >>>>>> As a quick action, shall we properly document this in our all docker >>>>>> repositories? Also it should go to doc site as well. >>>>>> >>>>>> Going forward we should allow users to pass this as env variable and >>>>>> set it up. >>>>>> >>>>>> [1] https://developers.redhat.com/blog/2017/03/14/java-inside-docker/ >>>>>> >>>>>> thanks >>>>>> >>>>>> -- >>>>>> Lakmal Warusawithana >>>>>> Senior Director - Cloud Architecture; WSO2 Inc. >>>>>> Mobile : +94714289692 <+94%2071%20428%209692> >>>>>> Blogs : https://medium.com/@lakwarus/ >>>>>> http://lakmalsview.blogspot.com/ >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Architecture mailing list >>>>>> Architecture@wso2.org >>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Thanks >>>>> Abimaran Kugathasan >>>>> Senior Software Engineer - API Technologies >>>>> >>>>> Email : abima...@wso2.com >>>>> Mobile : +94 773922820 <+94%2077%20392%202820> >>>>> >>>>> <http://stackoverflow.com/users/515034> >>>>> <http://lk.linkedin.com/in/abimaran> >>>>> <http://www.lkabimaran.blogspot.com/> <https://github.com/abimarank> >>>>> <https://twitter.com/abimaran> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Architecture mailing list >>>>> Architecture@wso2.org >>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>> >>>>> >>>> >>>> >>>> -- >>>> Lakmal Warusawithana >>>> Senior Director - Cloud Architecture; WSO2 Inc. >>>> Mobile : +94714289692 <+94%2071%20428%209692> >>>> Blogs : https://medium.com/@lakwarus/ >>>> http://lakmalsview.blogspot.com/ >>>> >>>> >>>> >>> >>> >>> -- >>> Lakmal Warusawithana >>> Senior Director - Cloud Architecture; WSO2 Inc. >>> Mobile : +94714289692 <+94%2071%20428%209692> >>> Blogs : https://medium.com/@lakwarus/ >>> http://lakmalsview.blogspot.com/ >>> >>> >>> >>> _______________________________________________ >>> Architecture mailing list >>> Architecture@wso2.org >>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>> >>> >> >> >> -- >> *Pubudu Gunatilaka* >> Committer and PMC Member - Apache Stratos >> Senior Software Engineer >> WSO2, Inc.: http://wso2.com >> mobile : +94774078049 <%2B94772207163> >> >> >> _______________________________________________ >> Architecture mailing list >> Architecture@wso2.org >> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >> >> > > _______________________________________________ > Architecture mailing list > Architecture@wso2.org > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- Deependra Ariyadewa WSO2, Inc. http://wso2.com/ http://wso2.org email d...@wso2.com; cell +94 71 403 5996 <071%20403%205996> ; Blog http://risenfall.wordpress.com/ PGP info: KeyID: 'DC627E6F' *WSO2 - Lean . Enterprise . Middleware*
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