| Commit message (Collapse) | Author | Age | Files | Lines |
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based clients can use UDP server that is inherited from LLUDPServer.
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always leave a worker thread available for other tasks
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to use a non-blocking parallel method when operating in async mode
* Minor code readability cleanup
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in faster than the surrounding scene
* Adds duplicate tracking for SceneObjectParts and ScenePresences to avoid sending out duplicate ImprovedTerseObjectUpdate packets
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inside Scene as an implementation detail. This will reduce programming error and make it easier to refactor the avatar vs client vs presence mess later on
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or async to use Scene.ForEachClient() instead of referencing ClientManager directly
* Added a new [Startup] config option called use_async_when_possible to signal how to run operations that could be either sync or async
* Changed Scene.ForEachClient to respect use_async_when_possible
* Fixing a potential deadlock in Parallel.ForEach by locking on a temporary object instead of the enumerator (which may be shared across multiple invocations on ForEach). Thank you diva
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list of their prims in the region and none exist. Instead of leaving pack.Data null, this patch sets a new DataBlock[0];
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on the async_packet_handling config option, and added a debug log message when a UseCircuitCode packet is handled
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LLUDPClient.BackoffRTO()
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Parallel. This is quite possibly the source of some deadlocking, and at the very least the synchronous version gives better stack traces
* Lock the LLUDPClient RTO math * Add a helper function for backing off the RTO, and follow the optional advice in RFC 2988 to clear existing SRTT and RTTVAR values during a backoff
* Removing the unused PrimitiveBaseShape.SculptImage parameter * Improved performance of SceneObjectPart instantiation * ZeroMesher now drops SculptData bytes like Meshmerizer, to allow the texture data to be GCed * Improved typecasting speed in MySQLLegacyRegionData.BuildShape()
* Improved the instantiation of PrimitiveBaseShape
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handle PluginLoader with the using pattern. This freed up 121,634,796 bytes on my system
* Avoid allocating an Action<IClientAPI> object every round of the OutgoingPacketHandler
* Removed unnecessary semi-colon endings from OpenSim.ini.example [InterestManagement] section
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removed and several new parameters have been added to [ClientStack.LindenUDP]
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* Implemented section 5.5, exponential backoff of the RTO after a resend
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setting throttles (normal)
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avoiding locking and copying the list each time it is accessed
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use Watchdog.StartThread(). While your thread is running call Watchdog.UpdateThread(). When it is shutting down call Watchdog.RemoveThread(). Most of the threads in OpenSim have been updated
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Util.FireAndForget()
* Changed Util.FireAndForget() to use any of five different methods set with async_call_method in the [Startup] section of OpenSim.ini. Look at the example config for possible values
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empty instead of firing once per empty queue
* Change the OnQueueEmpty firing to use a minimum time until next fire instead of a sleep
* Set OutgoingPacket.TickCount = 0 earlier to avoid extra resends when things are running slowly (inside a profiler, for example)
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upped it to 30ms
* Removed the unused PacketSent() function
* Switched UnackedPacketCollection from a SortedDictionary to a Dictionary now that the sorting is no longer needed. Big performance improvement for ResendUnacked()
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if not it sleeps for a small amount of time. This throttles OnQueueEmpty calls where there is no callback or the callback is doing very little work
* Changed HandleQueueEmpty()'s Monitor.TryEnter() calls to locks. We want to take our time in this function and do all the work necessary, since returning too fast will induce a sleep anyways
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per-client back to per-scene
* Testing a fix from Jim to make the cpu usage fix cleaner
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can take several seconds, and was blocking up packet handling in the meantime
* Clamp retransmission timeout values between three and 10 seconds
* Log outgoing time for a packet right after it is sent instead of well before
* Loop through the entire UnackedPacketCollection when looking for expired packets
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tiny amount of time spent in the locks turned into a lot of time when the rest of the LLUDP implementation went lockless
* Changed the timer tracking numbers for each client to not have "memory". It will no longer queue up calls to functions like ResendUnacked
* Reverted Jim's WaitHandle code. Although it was technically more correct, it exhibited the exact same behavior as the old code but spent more cycles. The 20ms has been replaced with the minimum amount of time before a token bucket could receive a drip, and an else { sleep(0); } was added to make sure the outgoing packet handler always yields at least a minimum amount
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same category
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handling with an interruptible wait handle
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the case where no scripting engine is enabled
* Added TokenBucket.cs to OpenSim, with some fixes for setting a more accurate MaxBurst value and getting a more accurate Content value (by Drip()ing each get)
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being done for AgentUpdate packets
* Start LLUDPClients unpaused (this variable is not being used yet)
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* Changed the outgoing packet handler to use a real function instead of a closure and to track time on a per-client basis instead of a global basis
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incoming packet handler
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out exactly what is and isn't needed
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and UDP code
* Changing the cache modules to only initialize the caches if they are actually enabled. Should save a bit of resources from unused cache systems
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* Send terrain data in a spiral pattern instead of a typewriter pattern (placeholder until terrain data becomes part of the interest list management)
* Added a debug line when resent packets are being sent
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* Replaced calls to ThreadPool.QueueUserWorkItem() with ThreadPool.UnsafeQueueUserWorkItem() since OpenSim does not use Code Access Security sandboxing
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This avoids .NET remoting and a managed->unmanaged->managed jump. Overall, a night and day performance difference
* Initialize the LLClientView prim full update queue to the number of prims in the scene for a big performance boost
* Reordered some comparisons on hot code paths for a minor speed boost
* Removed an unnecessary call to the expensive DateTime.Now function (if you *have* to get the current time as opposed to Environment.TickCount, always use DateTime.UtcNow)
* Don't fire the queue empty callback for the Resend category
* Run the outgoing packet handler thread loop for each client synchronously. It seems like more time was being spent doing the execution asynchronously, and it made deadlocks very difficult to track down
* Rewrote some expensive math in LandObject.cs
* Optimized EntityManager to only lock on operations that need locking, and use TryGetValue() where possible
* Only update the attachment database when an object is attached or detached
* Other small misc. performance improvements
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packets to fill in the data more accurately and avoid allocating memory that is immediately thrown away
* Changed the Send*Data structs in IClientAPI to use public readonly members instead of private members and getters
* Made Parallel.ProcessorCount public
* Started switching over packet building methods in LLClientView to use Util.StringToBytes[256/1024]() instead of Utils.StringToBytes()
* More cleanup of the ScenePresences vs. ClientManager nightmare
* ScenePresence.HandleAgentUpdate() will now time out and drop incoming AgentUpdate packets after three seconds. This fixes a deadlock on m_AgentUpdates that was blocking up the LLUDP server
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our own avatar is ready to send
* Reduce the scope of the locks when processing the update queues
* Reuse the ImprovedTerseObjectUpdate.RegionData block
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* Handle the AgentFOV packet
* Bypass queuing and throttles for ping checks to make ping times more closely match network latency
* Only track reliable bytes in LLUDPCLient.BytesSinceLastACK
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* Fixing a log message typo
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re-prioritizing updates
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finer grained prioritization of avatars vs. prims
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a friendly error message and drop the packet
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increase throughput. Apologies to Jim for hacking on your code while it's only halfway done, I'll take responsibility for the manual merge
* Changed LLUDP to use its own MTU value of 1400 instead of the 1200 value pulled from the currently shipped libomv
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