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Optimize PrevEventIDs when getting thousands of backwards extremeties
#3308
+122
−6
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Codecov ReportAttention:
Additional details and impacted files@@ Coverage Diff @@
## main #3308 +/- ##
==========================================
- Coverage 65.50% 65.34% -0.16%
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Files 509 509
Lines 57493 57514 +21
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- Hits 37659 37585 -74
- Misses 15960 16030 +70
- Partials 3874 3899 +25
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kegsay
suggested changes
Jan 19, 2024
roomserver/api/perform.go
Outdated
| } | ||
| prevEventIDs = util.UniqueStrings(prevEventIDs) | ||
| // If we still have > 100 eventIDs, only return the first 100 | ||
| if len(prevEventIDs) > 100 { | ||
| return prevEventIDs[:100] |
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Again, arbitrary and needs justification. Also need to justify why we just spent all this time getting 1000 only to take 100 of them. At what point would a map[string]struct{} be better than this?
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Looks like map[string]struct{} has the best results - 1 more alloc compared to the "original" change and otherwise much better, see updated PR description.
…ckfill-prev-eventIDs
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Changes how many
PrevEventIDswe send to other servers when backfilling, capped to 100 events.Unsure about how representative this benchmark is..