Add some debug logging.

3 files changed, 15 insertions, 2 deletions

diff --git a/searchcore/src/vespa/searchcore/proton/server/memory_flush_config_updater.cpp b/searchcore/src/vespa/searchcore/proton/server/memory_flush_config_updater.cpp
index b842820bfe1..8f9bc4b4aeb 100644
--- a/searchcore/src/vespa/searchcore/proton/server/memory_flush_config_updater.cpp
+++ b/searchcore/src/vespa/searchcore/proton/server/memory_flush_config_updater.cpp
@@ -78,11 +78,11 @@ MemoryFlushConfigUpdater::updateFlushStrategy(const LockGuard &guard, const char
     if ( currentConfig != newConfig ) {
         _flushStrategy->setConfig(newConfig);
         LOG(info, "Due to %s (conservative-disk=%d, conservative-memory=%d, retired=%d) flush config updated to "
-                  "global-disk-bloat(%1.2f), max-tls-size(%" PRIu64 "),"
-                                                                    "max-global-memory(%" PRIu64 "), max-memory-gain(%" PRIu64 ")",
+                  "global-disk-bloat(%1.2f), max-tls-size(%" PRIu64 "),max-global-memory(%" PRIu64 "), max-memory-gain(%" PRIu64 ")",
             why, _useConservativeDiskMode, _useConservativeMemoryMode, _nodeRetired,
             newConfig.globalDiskBloatFactor, newConfig.maxGlobalTlsSize,
             newConfig.maxGlobalMemory, newConfig.maxMemoryGain);
+        LOG(debug, "Old config = %s\nNew config = %s", currentConfig.toString().c_str(), newConfig.toString().c_str());
     }
 }
 
diff --git a/searchcore/src/vespa/searchcore/proton/server/memoryflush.cpp b/searchcore/src/vespa/searchcore/proton/server/memoryflush.cpp
index a3f27aa7a92..8baa06e2bb6 100644
--- a/searchcore/src/vespa/searchcore/proton/server/memoryflush.cpp
+++ b/searchcore/src/vespa/searchcore/proton/server/memoryflush.cpp
@@ -74,6 +74,18 @@ MemoryFlush::Config::Config(uint64_t maxGlobalMemory_in,
       maxTimeGain(maxTimeGain_in)
 { }
 
+vespalib::string
+MemoryFlush::Config::toString() const {
+    vespalib::asciistream os;
+    os << "maxGlobalMemory=" << maxGlobalMemory << " ";
+    os << "maxGlobalTlsSize=" << maxGlobalTlsSize << " ";
+    os << "globalDiskBloatFactor=" << globalDiskBloatFactor << " ";
+    os << "maxMemoryGain=" << maxMemoryGain << " ";
+    os << "diskBloatFactor=" << diskBloatFactor << " ";
+    os << "maxTimeGain(ns)=" << maxTimeGain.count();
+    return os.str();
+}
+
 MemoryFlush::MemoryFlush(const Config &config, vespalib::system_time startTime)
     : _lock(),
       _config(config),
diff --git a/searchcore/src/vespa/searchcore/proton/server/memoryflush.h b/searchcore/src/vespa/searchcore/proton/server/memoryflush.h
index 1e8d1b1f08c..3ea34c10e52 100644
--- a/searchcore/src/vespa/searchcore/proton/server/memoryflush.h
+++ b/searchcore/src/vespa/searchcore/proton/server/memoryflush.h
@@ -44,6 +44,7 @@ public:
                    (maxTimeGain == rhs.maxTimeGain) &&
                    (diskBloatFactor == rhs. diskBloatFactor);
         }
+        vespalib::string toString() const;
     };
 
     enum OrderType { DEFAULT, MAXAGE, DISKBLOAT, TLSSIZE, MEMORY };