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-rw-r--r--src/validation.cpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/validation.cpp b/src/validation.cpp
index 4ce0723b21..7f447d4fcc 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -3391,6 +3391,15 @@ void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight
int count=0;
if (nCurrentUsage + nBuffer >= nPruneTarget) {
+ // On a prune event, the chainstate DB is flushed.
+ // To avoid excessive prune events negating the benefit of high dbcache
+ // values, we should not prune too rapidly.
+ // So when pruning in IBD, increase the buffer a bit to avoid a re-prune too soon.
+ if (IsInitialBlockDownload()) {
+ // Since this is only relevant during IBD, we use a fixed 10%
+ nBuffer += nPruneTarget / 10;
+ }
+
for (int fileNumber = 0; fileNumber < nLastBlockFile; fileNumber++) {
nBytesToPrune = vinfoBlockFile[fileNumber].nSize + vinfoBlockFile[fileNumber].nUndoSize;