larger intervals show marked decrease in speed of output

[jayjanssen]

No description provided.

[jayjanssen]

Concept:

modify parser to gather raw samples in their entirety and check the uptime value against the desired interval. Only parse the raw samples if we know we care about the interval, just toss it otherwise.

[jayjanssen]

Also 2898525

[jayjanssen]

Before this fix:

BenchmarkParseStatus        2000       1088392 ns/op
BenchmarkParseVariables     2000        642497 ns/op
BenchmarkParseManySamples          5     234505434 ns/op
BenchmarkParseManySamplesLongInterval          5     233892328 ns/op
BenchmarkVariableExpand     2000        618501 ns/op

After

BenchmarkParseStatus        1000       1303638 ns/op
BenchmarkParseVariables     2000        611017 ns/op
BenchmarkParseManySamples          5     227013783 ns/op
BenchmarkParseManySamplesLongInterval         10     169662651 ns/op
BenchmarkVariableExpand     2000        617166 ns/op

I expect the improvement in BenchmarkParseManySamplesLongInterval should increase with the size of the interval. The new structure is somewhat more expensive to parse a single sample