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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Also not passing a scope is probably bound to help – especially if
the perf critical code is in this file and accesses lots of globals. Do
.Compile, get the DefaultScope, update that w/ the vars you want set, and then
just do .Execute().<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>Jimmy Schementi<br>
<b>Sent:</b> Sunday, September 28, 2008 1:32 PM<br>
<b>To:</b> Discussion of IronPython<br>
<b>Subject:</b> Re: [IronPython] IPyb5 performance<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Make that last line call compile and see if it helps. When the
Silverlight integration was written that gave a 4x speedup when using top-level
functions/variables:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>source.Compile().Execute(mainScope);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Not sure if that’s the case anymore, but it’s worth a try.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>~js<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>Ronnie Maor<br>
<b>Sent:</b> Saturday, September 27, 2008 11:22 PM<br>
<b>To:</b> Discussion of IronPython<br>
<b>Subject:</b> [IronPython] IPyb5 performance<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Hi all,<br>
<br>
I've finally managed to get my code running correctly under IPy2b5 - thanks
everyone who helped!<br>
<br>
I'm now left with a performance problem. My code seems to run roughly 2 times
slower:<br>
* infra tests regressed from 19 seconds in IPy 1.1.1 to 33 seconds in IPy2b5<br>
* application level tests regressed from 375 seconds in 1.1.1 to 705 seconds in
IPy2b5<br>
(these are single measurements, but variance is not too big - about 5%)<br>
startup time is also much longer, but I can live with that.<br>
<br>
before trying to pinpoint the bottlenecks, I wanted to check I'm not missing
something stupid, like turning on optimizations in the DLR...<br>
below is the hosting code I'm using to run the tests. I tried with and without
"Debug" flag, and it doesn't seem to change anything (except debug allows
me to understand the stack traces). I can also run the infra tests with ipy
directly, which showed that -O and -OO don't help either.<br>
<br>
Is there something else I should be doing? any tips?<br>
thanks!<br>
<br>
// set up runtime and engine<br>
Dictionary<string, object> runtimeOptions = new Dictionary<string,
object>();<br>
runtimeOptions["Debug"] = true;<br>
ScriptRuntime runtime =
IronPython.Hosting.Python.CreateRuntime(runtimeOptions);<br>
runtime.LoadAssembly(typeof(String).Assembly); // Add reference to System<br>
runtime.LoadAssembly(typeof(Uri).Assembly); // Add reference to mscorlib<br>
engine =
runtime.GetEngine("Python");<br>
....<br>
<br>
// run file as __main__<br>
engine.SetSearchPaths(new string[] {".", progdir, backend_dir,
stdlib_dir});<br>
<br>
List argv =
new List();<br>
argv.append(filename);<br>
for (int i =
2; i < args.Length; ++i)<br>
argv.append(args[i]);<br>
engine.GetSysModule().SetVariable("argv", argv);<br>
<br>
mainScope =
engine.CreateScope();<br>
mainScope.SetVariable("__name__", "__main__");<br>
var
main_module =
Microsoft.Scripting.Hosting.Providers.HostingHelpers.GetScope(mainScope);<br>
runtime.Globals.SetVariable("__main__", main_module);<br>
mainScope.SetVariable("__file__",filename);<br>
<br>
ScriptSource
source = engine.CreateScriptSourceFromFile(filename, Encoding.Default,
SourceCodeKind.Statements);<br>
source.Execute(mainScope);<o:p></o:p></p>
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