You can never get 0 cores. There will be at least 1.

1 files changed, 1 insertions, 1 deletions

diff --git a/searchcore/src/vespa/searchcore/proton/server/proton.cpp b/searchcore/src/vespa/searchcore/proton/server/proton.cpp
index 1aa4fc29a21..57f36d10745 100644
--- a/searchcore/src/vespa/searchcore/proton/server/proton.cpp
+++ b/searchcore/src/vespa/searchcore/proton/server/proton.cpp
@@ -434,7 +434,7 @@ Proton::~Proton()
     if (_fs4Server) {
         _fs4Server->shutDown();
     }
-    size_t numCores = std::max(1u, _protonConfigurer.getActiveConfigSnapshot()->getBootstrapConfig()->getHwInfo().cpu().cores());
+    size_t numCores = _protonConfigurer.getActiveConfigSnapshot()->getBootstrapConfig()->getHwInfo().cpu().cores();
     vespalib::ThreadStackExecutor closePool(std::min(_documentDBMap.size(), numCores), 0x20000);
     closeDocumentDBs(closePool);
     _documentDBMap.clear();