Mostly for performances reasons.
First one to implement threading later.
Second one to speed up the dichotomy,
but it doesn't seem that much better so far.
Rules can now come in 3 different formats:
- AdBlock rules
- Host lists
- Domains lists
All will be converted into domain lists and aggregated
(only AdBlock rules matching a whole domain will be kept).
Subdomains will now be matched if it is a subdomain of any domain of the
rule.
It is way faster (seconds rather than hours!) but less flexible
(although it shouldn't be a problem).
This effectively removes the parallelism of filtering,
which doubles the processing time (5->8 hours),
but this allows me to toy around with the performances of this step,
which I aim to improve drastically.
It's not very performant by itself, especially since pyre2 isn't
maintained nor really compilableinstallable anymore.
The performance seems to have decreased from 200 req/s to 0.2 req/s when
using 512 threads, and to 80 req/s using 64 req/s.
This might or might not be related,as the CPU doesn't seem to be the
bottleneck.
I will probably add support for host-based rules, matching the
subdomains of such hosts (as for now there doesn't seem to be any other
pattern for first-party trackers than subdomains, and this would be a
very broad performace / compatibility with existing lists improvement),
and convert the AdBlock lists to this format, only keeping domains-only
rules.
