[Vm-dev] Reed Solomon plugins & performance slow down

[Robert Withers]

Hey all'y'all,

I got the plugins working correctly. Published to Cryptography. The plugins are attached. Unfortunately profiling indicates a slow down. The leaves did change from GaloisField methods to GaloisFieldPoly methods. I will work on pluginizing the GFPoly methods, such as #evaluateAt: & #multiplyByMonomialDegree:coefficient:...

Here are the results without plugins (135 seconds):

> WITHOUT PLUGINS
>
> - 132032 tallies, 135390 msec.
>
> **Tree**
> --------------------------------
> Process: (40) 57626: nil
> --------------------------------
>
> **Leaves**
> 16.9% {22843ms} RSFECGenericGF>>exp:
> 9.2% {12450ms} RSFECGenericGF>>maskValue:
> 8.6% {11659ms} RSFECGenericGF>>addOrSubtract:by:
> 7.2% {9806ms} RSFECGenericGF>>log:
> 6.6% {8958ms} RSFECGenericGF>>normalizeIndex:
> 4.9% {6578ms} RSFECGenericGF>>multiply:by:
> 2.3% {3130ms} RSErasureGalois>>maskValue:
> 2.3% {3118ms} RSFECGenericGFPoly>>evaluateAt:
> 1.6% {2175ms} RSErasureGalois>>normalizeIndex:
> 1.3% {1718ms} RSFECGenericGFPoly>>addOrSubtractPoly:
> 1.3% {1702ms} RSFECGenericGFPoly>>multiplyByMonomialDegree:coefficient:
> 1.2% {1606ms} RSErasureGalois>>log:
> 1.1% {1516ms} RSErasureGalois>>galoisMultiply:by:

And here are the results with plugins (152 seconds):

> WITH PLUGINS
>
> - 149040 tallies, 152531 msec.
>
> **Tree**
> --------------------------------
> Process: (40) 89223: nil
> --------------------------------
>
> **Leaves**
> 27.9% {42565ms} RSFECGenericGFWithPlugin>>addOrSubtract:by:
> 17.3% {26440ms} RSFECGenericGFPoly>>evaluateAt:
> 8.5% {12926ms} RSFECGenericGFWithPlugin>>maskValue:
> 7.3% {11062ms} RSFECGenericGFPoly>>multiplyByMonomialDegree:coefficient:
> 6.5% {9854ms} RSFECGenericGFPoly>>addOrSubtractPoly:
> 5.6% {8598ms} RSFECGenericGFWithPlugin>>multiply:by:
> 2.6% {4032ms} RSErasureGaloisWithPlugin>>galoisMultiply:by:
> 2.4% {3601ms} RSErasureGaloisWithPlugin>>addOrSubtract:by:
> 2.1% {3137ms} RSErasureGaloisWithPlugin>>maskValue:
> 1.6% {2436ms} RSFECGenericGFPoly>>multiplyPoly:

--
---
Kindly,
Robert
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