[tor-dev] Guardiness: Yet another external dirauth script

Damian Johnson atagar at torproject.org
Wed Sep 17 15:52:54 UTC 2014

> FWIW, turning off validation helps a bit but not too much.  For
> example, my laptop parsing 24 consensuses with validation takes 25
> seconds, and if we disable validation it takes 22 seconds.
> This means that to reach the rate of 120~ consensuses a second with
> parse_file(), we need to make it 100 times faster or so. This sounds
> much harder than 30% performance increase :/

Yup. I'm growingly kinda in agreement with your earlier sentiment that
your use case (bulk processing hundreds of consensuses per second) is
a bit specialized. I've occasionally thought that if I was to write
Stem's parsers again I'd make them lazy load attributes. That would
give you what you're after here.

But as they're written nowadays they're eager, and parsing all the
consensus attributes takes time. So assuming you don't care about
validation or having yet another thing to maintain a small shell
script might serve you just as well.

Cheers! -Damian

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