Jacek Sieka 3cb31e66b4
set upper bound on EpochRef cache (#2403)
* set upper bound on EpochRef cache

* max 32 EpochRef instances
* less memory waste in BlockRef by removing EpochRef seq that is mostly
unused (~20mb)
* less memory waste in dag block lookup by not keeping an extra copy of
digest (~70mb)
* fix `==` and `$` for Eth2Digest
* remove `ChainDAG.tmpState` (~50mb?)

all in all, this branch cuts mainnet memory usage by ~160-180mb and puts
limits on EpochRef cache usage - where normally it hovered around 950mb
before, it's now sitting at 600-700mb on my machine.

* docs
2021-03-17 11:17:15 +01:00
..
2020-11-20 11:00:22 +01:00
2020-06-03 15:52:02 +02:00
2021-03-05 14:12:00 +01:00