Print free page info in benchmark.

LMDB seems to amass quite some free pages that are not reused,
resulting in a rather poor usage of the space available.
I haven't figured out why that is so far (it doesn't seem
to be due to open transactions).

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/dummyresourcewritebenchmark.cpp b/tests/dummyresourcewritebenchmark.cpp
index 3e8f4c5..1e7f1ef 100644
--- a/tests/dummyresourcewritebenchmark.cpp
+++ b/tests/dummyresourcewritebenchmark.cpp
@@ -213,6 +213,11 @@ private Q_SLOTS:
         QVERIFY(timeStandardDeviation < 1);
     }
 
+    void getFreePages()
+    {
+        std::system(QString("mdb_stat %1/%2 -ff").arg(Akonadi2::storageLocation()).arg("org.kde.dummy.instance1").toLatin1().constData());
+    }
+
     //This allows to run individual parts without doing a cleanup, but still cleaning up normally
     void testCleanupForCompleteTest()
     {