Increase default dbcache to 100 MiB

Author: sipa

src/init.cpp

@@ -196,7 +196,7 @@ std::string HelpMessage(HelpMessageMode hmm)
     strUsage += "  -testnet               " + _("Use the test network") + "\n";
     strUsage += "  -pid=<file>            " + _("Specify pid file (default: bitcoind.pid)") + "\n";
     strUsage += "  -gen                   " + _("Generate coins (default: 0)") + "\n";
-    strUsage += "  -dbcache=<n>           " + _("Set database cache size in megabytes (default: 25)") + "\n";
+    strUsage += "  -dbcache=<n>           " + _("Set database cache size in megabytes (default: 100)") + "\n";
     strUsage += "  -timeout=<n>           " + _("Specify connection timeout in milliseconds (default: 5000)") + "\n";
     strUsage += "  -proxy=<ip:port>       " + _("Connect through SOCKS proxy") + "\n";
     strUsage += "  -socks=<n>             " + _("Select SOCKS version for -proxy (4 or 5, default: 5)") + "\n";
@@ -776,7 +776,7 @@ bool AppInit2(boost::thread_group& threadGroup)
     }
 
     // cache size calculations
-    size_t nTotalCache = GetArg("-dbcache", 25) << 20;
+    size_t nTotalCache = GetArg("-dbcache", 100) << 20;
     if (nTotalCache < (1 << 22))
         nTotalCache = (1 << 22); // total cache cannot be less than 4 MiB
     size_t nBlockTreeDBCache = nTotalCache / 8;

src/qt/optionsmodel.cpp

@@ -84,7 +84,7 @@ void OptionsModel::Init()
 #endif
 
     if (!settings.contains("nDatabaseCache"))
-        settings.setValue("nDatabaseCache", 25);
+        settings.setValue("nDatabaseCache", 100);
     if (!SoftSetArg("-dbcache", settings.value("nDatabaseCache").toString().toStdString()))
         strOverriddenByCommandLine += "-dbcache ";