e285d8bbf4
In `async` functions, a closure environment is created for variables that cross an await boundary - this closure environment is kept in memory for the lifetime of the associated future - this means that although _some_ variables are no longer used, they still take up memory for a long time. In Nimbus, message validation is processed in batches meaning the future of an incoming gossip message stays around for quite a while - this leads to memory consumption peaks of 100-200 mb when there are many attestations in the pipeline. To avoid excessive memory usage, it's generally better to move non-async code into proc's such that the variables therein can be released earlier - this includes the many hidden variables introduced by macro and template expansion (ie chronicles that does expensive exception handling) * move seen table salt to floodsub, use there as well * shorten seen table salt to size of hash * avoid unnecessary memory allocations and copies in a few places * factor out message scoring * avoid reencoding outgoing message for every peer * keep checking validators until reject (in case there's both reject and ignore) * `readOnce` avoids `readExactly` overhead for single-byte read * genericAssign -> assign2 |
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| behavior.nim | ||
| scoring.nim | ||
| types.nim | ||