wsd: report PSS of kit processes

Each Kit process now reports its own PSS,
which is much more accurate as they share
a significant ratio of their pages with
one another.

Admin tracks the PSS values of the Kits
and reports to the console.

Change-Id: Ifa66d17749c224f0dc211db80c44f7c913f2d6c4
Reviewed-on: https://gerrit.libreoffice.org/33864
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
Tested-by: Ashod Nakashian <ashnakash@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/wsd/AdminModel.hpp b/wsd/AdminModel.hpp
index 1251470c94..0e46ca568b 100644
--- a/wsd/AdminModel.hpp
+++ b/wsd/AdminModel.hpp
@@ -49,6 +49,7 @@ public:
         : _docKey(docKey),
           _pid(pid),
           _filename(filename),
+          _memoryPss(0),
           _start(std::time(nullptr)),
           _lastActivity(_start)
     {
@@ -73,6 +74,8 @@ public:
     const std::map<std::string, View>& getViews() const { return _views; }
 
     void updateLastActivityTime() { _lastActivity = std::time(nullptr); }
+    void updateMemoryPss(int pss) { _memoryPss = pss; }
+    int getMemoryPss() const { return _memoryPss; }
 
 private:
     const std::string _docKey;
@@ -83,6 +86,8 @@ private:
     unsigned _activeViews = 0;
     /// Hosted filename
     std::string _filename;
+    /// The PSS of the document's Kit process.
+    int _memoryPss;
 
     std::time_t _start;
     std::time_t _lastActivity;
@@ -173,6 +178,7 @@ public:
     void removeDocument(const std::string& docKey);
 
     void updateLastActivityTime(const std::string& docKey);
+    void updateMemoryPss(const std::string& docKey, int pss);
 
 private:
     std::string getMemStats();
@@ -187,6 +193,7 @@ private:
     std::map<int, Subscriber> _subscribers;
     std::map<std::string, Document> _documents;
 
+    /// The last N total memory PSS.
     std::list<unsigned> _memStats;
     unsigned _memStatsSize = 100;