Java 8 metaspace garbage collection -

-

a java process i'm running performs consistently in first hour or runs. however, performance rapidly degrades. when profiling found metaspace garbage collection happened until hour mark , got out of control:

enter image description here

i'm sure i'll able fix using -xx:maxmetaspacesize option. however, i'd know more why behaviour might occurring. can't imagine why garbage collection algorithm behave this. have explanation or advice better fix? thanks

you can try setting -xx:maxmetaspaceexpansion=0. should force full gc - releasing dynamically created methods/class data - before attempting grow metaspace. additionally can try setting maxmetaspacefreeratio lower value default shrink metaspace more after gc.

see this answer other metaspace related options.

metaspace collection relies on classes being unloaded garbage collector. depending on gc you're using tweaking reclaim garbage sooner might help.


Comments

Post a Comment

Popular posts from this blog

javascript - Karma not able to start PhantomJS on Windows - Error: spawn UNKNOWN -

-
i lost "unknown" error: karma.conf.js: frameworks: ['mocha', 'should'], plugins: ['karma-mocha', 'karma-should', 'karma-phantomjs-launcher'], ... browsers: ['phantomjs'], error: 23 07 2015 14:35:37.691:warn [karma]: no captured browser, open http://localhost:9876/ 23 07 2015 14:35:37.701:info [karma]: karma v0.13.3 server started @ http://localhost:9876/ 23 07 2015 14:35:37.707:info [launcher]: starting browser phantomjs 23 07 2015 14:35:37.738:error [karma]: { [error: spawn unknown] code: 'unknown', errno: 'unknown', syscall: 'spawn' } error: spawn unknown @ exports._errnoexception (util.js:749:11) @ childprocess.spawn (child_process.js:1093:11) @ exports.spawn (child_process.js:933:9) @ object._execcommand (c:\users\jinga4x\git\mdl-sample-project\node_modules\karma\lib\launchers\process.js:63:21) @ object._start (c:\users\jinga4x\git\md...
Read more

Nuget pack csproj using nuspec -

-
i want create nuget package contains specified in nuspec file, still version csproj. in order use token have pack like: nuget pack myproj.csproj but when adds dependencies , creates unwanted folder in nuget package. nuspec file is: <?xml version="1.0" encoding="utf-8"?> <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd"> <metadata> <id>test</id> <version>$version$</version> <title>test</title> <authors>test</authors> <owners>test</owners> <requirelicenseacceptance>false</requirelicenseacceptance> <description>test</description> <summary>test</summary> <releasenotes>test</releasenotes> <copyright>test</copyright> </metadata> <files> <file src="bin\debug\*.dll" target="lib\net45" /> <file s...
Read more

c# - Display ASPX Popup control in RowDeleteing Event (ASPX Gridview) -

-
i have aspxgridview includes new , delete button. delete button includs gv_rowdeleting event. want show aspxpopupcontrol (id="pupconfirm"). want user have confirm password delete item. tried: protected void gv_rowdeleting(object sender, devexpress.web.data.aspxdatadeletingeventargs e) { pupconfirm.showonpageload = true; } but nothing happened. please me. !!! you can create template column javascript prompt confirmation. <itemtemplate> <asp:linkbutton id="btndelete" runat="server" text="delete" commandname="delete" onclientclick="javascript:if(!confirm('are sure want delete record?')){return false;}"> </asp:linkbutton> </itemtemplate>
Read more