paul-rouse/mysql-simple

`parseTime` is 20x slower than an attoparsec parser

parsonsmatt opened this issue · 2 comments

parsonsmatt commented

cf byteverse/chronos#18 (comment)

Currently mysql-simple uses parseTime to parse the time. Using a custom attoparsec parser would make things faster and more memory efficient.

paul-rouse commented

Chronos is interesting! Do you think the overall gain would be significant, in the context of the whole processing of a result?

parsonsmatt commented

That's the important question :) I'll have to write a benchmark for it! Someone on FPChat mentioned that parsing UTCTime out of a database query was taking 20% of the runtime of his app, which got me on this chase.

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