Limit maximum lossless refresh CPU usage
If we have plenty of bandwidth then CPU might be the limiting resource.
Unfortunately we don't have a good number for that limit, so add a
conservative hard coded value.
diff --git a/common/rfb/VNCSConnectionST.cxx b/common/rfb/VNCSConnectionST.cxx
index 01e86c1..f1591f4 100644
--- a/common/rfb/VNCSConnectionST.cxx
+++ b/common/rfb/VNCSConnectionST.cxx
@@ -1094,11 +1094,16 @@
// afford a larger update size
nextUpdate = server->msToNextUpdate();
if (nextUpdate > 0) {
- size_t maxUpdateSize;
+ size_t bandwidth, maxUpdateSize;
// FIXME: Bandwidth estimation without congestion control
- maxUpdateSize = congestion.getBandwidth() * nextUpdate / 1000;
+ bandwidth = congestion.getBandwidth();
+ // FIXME: Hard coded value for maximum CPU throughput
+ if (bandwidth > 5000000)
+ bandwidth = 5000000;
+
+ maxUpdateSize = bandwidth * nextUpdate / 1000;
encodeManager.writeLosslessRefresh(req, server->getPixelBuffer(),
cursor, maxUpdateSize);
}