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main: Increase runtime GC memlimit params. #3485

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Merged
merged 1 commit into from
Mar 21, 2025
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main: Increase runtime GC memlimit params. #3485

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16 changes: 7 additions & 9 deletions dcrd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -75,16 +75,14 @@ func dcrdMain() error {
// limits the garbage collector from excessively overallocating during
// bursts. It does this by tweaking the soft memory limit.
//
// A soft upper memory limit is imposed that leaves plenty of headroom
// for the minimum recommended value and the target GC percentage is
// left at the default value to significantly reduce the number of GC
// cycles thereby reducing the amount of CPU time spent doing garbage
// collection.
// A soft upper memory limit is imposed that leaves plenty of headroom for
// the minimum recommended value and the target GC percentage is left at the
// default value to significantly reduce the number of GC cycles thereby
// reducing the amount of CPU time spent doing garbage collection.
//
// A limit of 1.5 GiB is used as a baseline, with an increase to the
// limit when the UTXO cache max size has been increased over the
// default.
const memLimitBase = (15 * (1 << 30)) / 10 // 1.5 GiB
// A limit of 1.8 GiB is used as a baseline, with an increase to the limit
// when the UTXO cache max size has been increased over the default.
const memLimitBase = (18 * (1 << 30)) / 10 // 1.8 GiB
softMemLimit := int64(memLimitBase)
if cfg.UtxoCacheMaxSize > defaultUtxoCacheMaxSize {
extra := int64(cfg.UtxoCacheMaxSize) - defaultUtxoCacheMaxSize
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