SERVER-16176 Log slow checkpoints in WiredTiger

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
index 275687829b3..20c52321578 100644
--- a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
+++ b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
@@ -299,6 +299,8 @@ public:
                 break;
             }
 
+            const Date_t startTime = Date_t::now();
+
             const Timestamp stableTimestamp = _wiredTigerKVEngine->getStableTimestamp();
             const Timestamp initialDataTimestamp = _wiredTigerKVEngine->getInitialDataTimestamp();
 
@@ -361,6 +363,11 @@ public:
                             oplogNeededForRollback.getValue().asULL());
                     }
                 }
+
+                const auto secondsElapsed = durationCount<Seconds>(Date_t::now() - startTime);
+                if (secondsElapsed >= 30) {
+                    LOG(1) << "Checkpoint took " << secondsElapsed << " seconds to complete.";
+                }
             } catch (const WriteConflictException&) {
                 // Temporary: remove this after WT-3483
                 warning() << "Checkpoint encountered a write conflict exception.";