From d6386546b38cec9ca83f8d85c90f71e84165028d Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sun, 26 Apr 2020 11:29:05 +0200
Subject: [PATCH] Only prune old messages every 500 syncs

---
 src/ChatPage.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/ChatPage.cpp b/src/ChatPage.cpp
index 61050c35..37d1354b 100644
--- a/src/ChatPage.cpp
+++ b/src/ChatPage.cpp
@@ -1000,7 +1000,13 @@ ChatPage::trySync()
 
                           emit syncTags(cache::roomTagUpdates(res));
 
-                          cache::deleteOldData();
+                          // if we process a lot of syncs (1 every 200ms), this means we clean the
+                          // db every 100s
+                          static int syncCounter = 0;
+                          if (syncCounter++ >= 500) {
+                                  cache::deleteOldData();
+                                  syncCounter = 0;
+                          }
                   } catch (const lmdb::map_full_error &e) {
                           nhlog::db()->error("lmdb is full: {}", e.what());
                           cache::deleteOldData();