I ran this through jprofiler and found some blockage.
Here's a short list:
During Startup the following show up:
ScriptRuntime.initStandardObjects( Context, ScriptablObject, boolean )
NativeGlobal.init(Context, Scriptable, boolean)
NativeArray.<init>(long)
NativeDate.<init>() -- in TimeZone.getDefault() actually.
NativeIterator.init(ScriptableObject, boolean)
ContextFactory.isDom3Present() -- Kit.classOrNull(String) --
j.lang.forName(String)
ContextFactory.getE4xImplementationFactory()
Then during execution of the loops:
Context.compileImpl(Scritpable,Reader,String,String,int,Object,boolean,E
valuator,ErrorReporter)
CompilerEnvirons.<init>()
Parser.parse(String,String,int)
TokenStream.<init>(Parser,Reader,String,int)
Parser.createDecompiler(CompilerEnvirons)
Parser.parse()
Codegen.transform(ScriptOrFnNode)
NodeTransformer.transformCompilationUnit(ScriptOrFnNode);
Codegen.compileToClassFile(CompilerEnvirons,String,ScriptOrFnNode,String
,boolean)
Codegen.generateCode(String) ==
ClassFileWriter.<init>(String,String,String)
ConstantPool.<init>(ClassFileWriter)
There are many others. One notable is:
DefiningClassLoader.loadClass(String,boolean) --
j.lang.ClassLoader.loadClass(String) which is, I think, when rhino loads
the compiled class for execution.
I changed the example by naming the scripts uniquely per thread by
changing one line of code:
Script script = cx.compileString("new Date()",
Thread.currentThread().getName(),0,null);
Visual inspection of the blocking shows this is better behaved. Perhaps
Rhino should do something smarter when the script name is null?
I am confused by the contention during startup. I would not have
expected there to be so much contention, I suspect its all in
sealObject.
Kevin
-----Original Message-----
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
lla.org] On Behalf Of [EMAIL PROTECTED]
Sent: Thursday, June 19, 2008 3:54 AM
To: [email protected]
Subject: Re: Mozilla rhino performance issues under multithreads
environment
I took a thread dump. But, unlucky, I cannot see any "wait at ..monitor"
message.
There should have something blocked threads running!!!
Anybody could help me?
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