<div dir="ltr">thanks for the help.<br>I tried both suggestions, but unfortunately it didn't change anything.<br>
<br>I now use a benchmark that builds a typical setup and then checks performance of calculations in steady state:<br>Ipy 1.1.1: total time: 80 sec. single "compute actions": 0.23 sec<br>Ipy 2.0b5: total time: 200 sec. single "compute actions": 1.2 sec<br>
<br>I believe the changes didn't help because most of the code is python, so the main is just the "tip of the iceberg". The main file is 64 lines and the code it launches is about 15K lines. IIUC what Dino said, the changes you proposed only affect how the 64 lines are run. The rest are compiled when they are imported (directly or indirectly by the main module) and run in their own scopes.<br>
<br>the good and bad news is that for steady state the degradation is 600%.
The good part is that maybe it's this bad because I'm using one or two
flows which have a very specific and silly problem (like the **kw which
you fixed already).<br>
I will try to focus the problem better once I've gotten over Rosh Hashana dinner :-)<br><br>btw, the only way I found to get the default scope was through CompiledCode.DefaultScope. Expected it to be accessible directly from the engine. Is there are reason it's not? (or have I just missed it)<br>
<br>thanks<br>Ronnie<br><br><div class="gmail_quote">On Mon, Sep 29, 2008 at 2:55 AM, Dino Viehland <span dir="ltr"><<a href="mailto:dinov@microsoft.com">dinov@microsoft.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">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().</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
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<p><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;">
<a href="mailto:users-bounces@lists.ironpython.com" target="_blank">users-bounces@lists.ironpython.com</a> [mailto:<a href="mailto:users-bounces@lists.ironpython.com" target="_blank">users-bounces@lists.ironpython.com</a>] <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</span></p>
</div>
</div><div><div></div><div class="Wj3C7c">
<p> </p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">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:</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">source.Compile().Execute(mainScope);</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">Not sure if that's the case anymore, but it's worth a try.</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">~js</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
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<p><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;">
<a href="mailto:users-bounces@lists.ironpython.com" target="_blank">users-bounces@lists.ironpython.com</a> [mailto:<a href="mailto:users-bounces@lists.ironpython.com" target="_blank">users-bounces@lists.ironpython.com</a>] <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</span></p>
</div>
</div>
<p> </p>
<div>
<p style="margin-bottom: 12pt;">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);</p>
</div>
</div>
</div></div></div>
</div>
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