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Add experimental OutgoingQueueRefillEngine to handle queue refill processing on a controlled number of threads rather than the threadpool.

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Disabled by default.  Currently can only be enabled with console "debug lludp oqre start" command, though this can be started and stopped whilst simulator is running.
When a connection requires packet queue refill processing (used to populate queues with entity updates, entity prop updates and image queue updates), this is done via Threadpool requests.
However, with a very high number of connections (e.g. 100 root + 300 child) a very large number of simultaneous requests may be causing performance issues.
This commit adds an experimental engine for processing these requests from a queue with a persistent thread instead.
Unlike inbound processing, there are no network requests in this processing that might hold the thread up for a long time.
Early implementation - currently only one thread which may (or may not) get overloaded with requests.  Added for testing purposes.
This commit is contained in:
Justin Clark-Casey (justincc)
2014-08-19 00:11:04 +01:00
parent b375f86f11
commit 84cea46c10
3 changed files with 288 additions and 5 deletions
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13
OpenSim/Region/ClientStack/Linden/UDP/LLUDPClient.cs
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@@ -650,8 +650,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (HasUpdates(m_categories))
{
// Asynchronously run the callback
Util.FireAndForget(FireQueueEmpty, categories);
if (!m_udpServer.OqrEngine.IsRunning)
{
// Asynchronously run the callback
Util.FireAndForget(FireQueueEmpty, categories);
}
else
{
m_udpServer.OqrEngine.QueueRequest(this, categories);
}
}
else
{
@@ -670,7 +677,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
/// <param name="o">Throttle categories to fire the callback for,
/// stored as an object to match the WaitCallback delegate
/// signature</param>
private void FireQueueEmpty(object o)
public void FireQueueEmpty(object o)
{
// m_log.DebugFormat("[LLUDPCLIENT]: FireQueueEmpty for {0} in {1}", AgentID, m_udpServer.Scene.Name);