[IronPython] ScriptScope.SetVariable() performance
Cory Brostowicz
cory.brostowicz at gmail.com
Thu Aug 12 21:38:45 CEST 2010
FYI - This method worked a ton faster than my original design, however
casting the dynamic variable to an object is almost twice as fast as this
approach.
Thanks again for the help, that helped a ton!
-Cory
On Thu, Aug 12, 2010 at 12:24 PM, Dino Viehland <dinov at microsoft.com> wrote:
> Oh, yeah, objects aren’t dynamic unless they’re typed to dynamic J I
> guess it needs to be:
>
> ((dynamic)mScope).PH = editScope;
>
>
>
>
>
> *From:* users-bounces at lists.ironpython.com [mailto:
> users-bounces at lists.ironpython.com] *On Behalf Of *Cory Brostowicz
> *Sent:* Thursday, August 12, 2010 10:11 AM
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] ScriptScope.SetVariable() performance
>
>
>
> I'm not sure what you mean by "mScope.PH = editScope". mScope =
> ScriptScope and doesn't allow dynamic properties.
>
>
>
> On the other hand, thanks for the suggestion with the object cast. That
> gave brought my setup performance up to par with the native C# edits!
>
>
>
> Edit: SetProviderType Count: 70291 Min: 9.866000E-001 Max:
> 5.393440E+001 Total: 6.684688E+004 Setup: 1.904770E+002
>
> Edit: SetFeeSchedule Count: 70291 Min: 1.229300E+000 Max:
> 6.506160E+001 Total: 9.587090E+004 Setup: 1.747695E+002
>
> Edit: phDefaultNetworkCode Count: 70291 Min: 9.700000E-003 Max:
> 2.347088E+002 Total: 1.154772E+003 Setup: 1.156382E+002
>
> Edit: phCloneFieldList Count: 70291 Min: 3.200000E-003 Max:
> 4.007700E+000 Total: 2.727729E+002 Setup: 1.137180E+002
>
> Edit: phAssignValueToField Count: 70291 Min: 4.400000E-003 Max:
> 1.205800E+000 Total: 4.475063E+002 Setup: 1.152221E+002
>
>
>
> On Thu, Aug 12, 2010 at 11:42 AM, Dino Viehland <dinov at microsoft.com>
> wrote:
>
> I’d suggest doing mScope.PH = editScope. That will create a rule which
> will get cached and will generally run faster than passing the string
> directly.
>
>
>
> The only other thing I can think of is maybe there’s something odd w/ rule
> being produced because “editScope” is a dynamic object in SetupEdit so “mScope.SetVariable("PH",
> editScope);” ends up dispatching dynamically. If you did “mScope.SetVariable("PH",
> (object)editScope);” it would dispatch statically.
>
>
>
> If neither of those solutions helps I can see if I can look deeper and see
> if I can repro it. There were some issues w/ IronPython 2.6 where this was
> really slow but they should have been fixed w/ 2.6.1.
>
>
>
>
>
> *From:* users-bounces at lists.ironpython.com [mailto:
> users-bounces at lists.ironpython.com] *On Behalf Of *Cory Brostowicz
> *Sent:* Thursday, August 12, 2010 7:34 AM
> *To:* users at lists.ironpython.com
> *Subject:* [IronPython] ScriptScope.SetVariable() performance
>
>
>
> Hello,
>
>
>
> I'm trying to get more performance out of my IronPython scripts inside one
> of my applications, and noticed I'm spending the bulk of my time setting up
> the ScriptScope prior to execution. My applications translates information
> coming from a flat file, and I use IronPython to enforce business rules on
> various records that I pull from my input file. The object that I'm passing
> to the scope is custom implementation of the ExpandoObject.
>
>
>
> Am I doing anything out of the ordinary here, or is there a better way to
> get the performance I'm after? It doesn't seem like setting up the script
> should performance significantly slower than executing the script itself.
>
>
> Here is an example of the performance results I'm getting. I'm keeping
> track of various timings for execution time, but the script setup timer is
> really just stopping and starting a stopwatch before and after each call to
> ScriptScope.SetVariable()...
>
>
>
>
>
> DUMPING EDIT STATS
>
> ------------------
>
>
>
> Edit: SetProviderType Count: 70291 Min: 9.927000E-001 Max:
> 4.922160E+001 Total: 7.656987E+004 Setup: 4.667084E+005
>
> Edit: SetFeeSchedule Count: 70291 Min: 1.572500E+000 Max:
> 6.547200E+001 Total: 1.067754E+005 Setup: 4.639014E+005
>
> Edit: phDefaultNetworkCode Count: 70291 Min: 1.900000E-002 Max:
> 2.413129E+002 Total: 1.618541E+003 Setup: 1.161743E+002
>
> Edit: phCloneFieldList Count: 70291 Min: 4.400000E-003 Max:
> 4.083400E+000 Total: 3.565259E+002 Setup: 1.113712E+002
>
> Edit: phAssignValueToField Count: 70291 Min: 9.700000E-003 Max:
> 1.777100E+000 Total: 5.765196E+002 Setup: 1.108866E+002
>
>
>
>
>
> SetProviderType and SetFeeSchedule are both IronPython scripts, the other
> three are C# edits that I'm passing my ExpandoObject directly to.
>
>
>
> 4.667 E+005 = almost 8 minutes...
>
> 1.108 E+002 = .1 seconds
>
>
>
>
>
> Thanks in advance for any advice you can help me with.
>
>
>
> -Cory
>
>
>
> class IronPythonScriptHost : PrimeEditBase {
>
> ScriptSource mScriptSource;
>
> ScriptEngine mEngine;
>
> ScriptScope mScope;
>
>
>
> public IronPythonScriptHost(string scriptText, string
> ScriptName, CommandLine mCommandLine, string[] mEditParms, ScriptEngine
> engine)
>
> : base(mCommandLine, mEditParms) {
>
> mEditName = ScriptName;
>
> mIsScript = true;
>
> mEngine = engine;
>
> mScriptSource =
> mEngine.CreateScriptSourceFromString(scriptText,
> Microsoft.Scripting.SourceCodeKind.File);
>
> mScriptSource.Compile();
>
> mScope = mEngine.CreateScope();
>
> }
>
> public override void SetupEdit(dynamic editScope) {
>
>
>
> StartSetupTimer();
>
> mScope.SetVariable("PH", editScope);
>
> StopSetupTimer();
>
> }
>
>
>
> public override void performEdit() {
>
> StartExecutionTimer();
>
> try {
>
>
> mScriptSource.Execute(mScope);
>
> CleanupEdit();
>
> } catch (Exception ex) {
>
> ExceptionOperations ExcOps =
> mEngine.GetService<ExceptionOperations>();
>
> throw new
> Exception("Exception during execution of " + base.EditName + ". " +
> ex.Message + "\r\n" + ExcOps.FormatException(ex));
>
> }
>
> StopAndRecordExecutionTimer();
>
> }
>
> }
>
>
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