node-opcua / node-opcua / 37692626027

91%

Build Type

push

github

Committed by erossignon

Commit Message

perf(variant): an EncodedVariant is made without its constructor

new EncodedVariant(bytes) defined four accessors on each instance, which
cost about 2 us per value: a front reading strings in place answered 20%
fewer Reads than when it decoded and encoded them again (mini PC, one and
two fronts). encodedVariant(bytes) now makes it as encodedDataValue()
does: Object.create of the prototype, which holds the accessors once.
Laptop, per value read in place then encoded: 63 ns for the island
against 390 ns (24-char string) to 4.3 us (1000 doubles) to decode and
encode it.

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