[Mono-dev] DateTime.Now performance improvement.
Miguel de Icaza
miguel at ximian.com
Tue Nov 21 18:08:19 EST 2006
I forgot to mention, with this change, a tight loop calling
DateTime.Now will go from 19.96 seconds to do one million calls into
14.21, so 5.75 seconds less.
Am doing a larger change that will improve Now performance more.
> The following patch helps in improving the performance of
> DateTime.Now does a lot of work currently as it needs to convert a
> system time into the local time zone. This patch caches a common value:
> the current year at the time of initialization, and uses that fast code
> path instead of the slower one most of the time.
> People running software that crosses the year boundary will still
> get the slower version, I could fix that if we think its important.
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