Parsing time stamps faster with SIMD instructions
Neatly omits the massively expensive calendar conversion step for turning the timestamp into a useful format for fast arithmetic. Parsing integers from strings is not why parsing timestamps is slow, any more than counting the length of strings is why XML parsing might be slow.<p>For time-sequential data, one easy speedup hack is caching the UNIX epoch for the current day start and adding the HH:MM:SS manually. No measurements to offer, but would suggest approaches like this would cleanly beat simdification of a trivial part of a complex task