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fix(inflight): reduce shrinking limit #306

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May 10, 2023
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fix(inflight): reduce shrinking limit #306

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2 changes: 1 addition & 1 deletion inflight/inflight.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ import (
// We track inflights in the map, maps in golang are not shrinking
// Therefore we track how many inflights were deleted and when it reaches the limit
// we forcefully recreate the map to shrink it
const shrinkInflightsLimit = 1000000
const shrinkInflightsLimit = 1000
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Why 1000?
Do we know the cost of map recreation?

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@dkropachev dkropachev May 10, 2023 •
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Just guesstimate.

This is limit of deletions to trigger recreation, recreation it self depends on the number of items in the map, which is limited only by number partition size, which is Uint64.Max/partitionCount usually it is 18446744073709551615/10000 = 1844674407370955.
With current implementation this limit is pretty much reachable, which is source of memory consumption.
But after #309 and #307 are fixed we should not see more than pkBufferReuseSize + concurrency, which is usually 100+10 infligths per partition.


type InFlight interface {
AddIfNotPresent(uint64) bool
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