[Users] CST stage has become slower

[Roland Haas]

Hello all,

> Do we expect Piraha to be faster than the old method?
I would expect it to be slower. The old method was just applying a
couple of regular expressions to each input line with any data
structures or other code involved. Piraha first parses using regular
expressions for each part then builds a syntax tree and works its way
through that tree. So more work I think. However I do not know if it
does enough work to make it measurably slower (rather than say 1 ms
slower out of 20 s due to being limited by IO latency anyway).

Yours,
Roland

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