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-rw-r--r--src/libstore/local-store.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 340fb5306..9ea71170f 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -1069,7 +1069,7 @@ StorePath LocalStore::addToStoreFromDump(Source & source0, const string & name,
or the original source is empty */
while (dump.size() < settings.narBufferSize) {
auto oldSize = dump.size();
- constexpr size_t chunkSize = 1024;
+ constexpr size_t chunkSize = 65536;
auto want = std::min(chunkSize, settings.narBufferSize - oldSize);
dump.resize(oldSize + want);
auto got = 0;