From 7524bd5a7ce332a9c63587423c79d6988e4c2896 Mon Sep 17 00:00:00 2001 From: Allen Kerensky Date: Sat, 9 Feb 2013 15:06:42 -0600 Subject: Additional ThreadPool worker and IOCP thread startup logic Signed-off-by: BlueWall --- OpenSim/Region/Application/Application.cs | 45 ++++++++++++++++++++++++++----- 1 file changed, 39 insertions(+), 6 deletions(-) diff --git a/OpenSim/Region/Application/Application.cs b/OpenSim/Region/Application/Application.cs index 0f90d37..c3e7ec2 100644 --- a/OpenSim/Region/Application/Application.cs +++ b/OpenSim/Region/Application/Application.cs @@ -102,17 +102,50 @@ namespace OpenSim m_log.InfoFormat( "[OPENSIM MAIN]: Environment variable MONO_THREADS_PER_CPU is {0}", monoThreadsPerCpu ?? "unset"); - // Increase the number of IOCP threads available. Mono defaults to a tragically low number + // Verify the Threadpool allocates or uses enough worker and IO completion threads + // .NET 2.0 workerthreads default to 50 * numcores + // .NET 3.0 workerthreads defaults to 250 * numcores + // .NET 4.0 workerthreads are dynamic based on bitness and OS resources + // Max IO Completion threads are 1000 on all 3 CLRs. + int workerThreadsMin = 500; + int workerThreadsMax = 1000; // may need further adjustment to match other CLR + int iocpThreadsMin = 1000; + int iocpThreadsMax = 2000; // may need further adjustment to match other CLR int workerThreads, iocpThreads; System.Threading.ThreadPool.GetMaxThreads(out workerThreads, out iocpThreads); m_log.InfoFormat("[OPENSIM MAIN]: Runtime gave us {0} worker threads and {1} IOCP threads", workerThreads, iocpThreads); - if (workerThreads < 500 || iocpThreads < 1000) + if (workerThreads < workerThreadsMin) { - workerThreads = 500; - iocpThreads = 1000; - m_log.Info("[OPENSIM MAIN]: Bumping up to 500 worker threads and 1000 IOCP threads"); - System.Threading.ThreadPool.SetMaxThreads(workerThreads, iocpThreads); + workerThreads = workerThreadsMin; + m_log.InfoFormat("[OPENSIM MAIN]: Bumping up to worker threads to {0}",workerThreads); } + if (workerThreads > workerThreadsMax) + { + workerThreads = workerThreadsMax; + m_log.InfoFormat("[OPENSIM MAIN]: Limiting worker threads to {0}",workerThreads); + } + // Increase the number of IOCP threads available. + // Mono defaults to a tragically low number (24 on 6-core / 8GB Fedora 17) + if (iocpThreads < iocpThreadsMin) + { + iocpThreads = iocpThreadsMin; + m_log.InfoFormat("[OPENSIM MAIN]: Bumping up IO completion threads to {0}",iocpThreads); + } + // Make sure we don't overallocate IOCP threads and thrash system resources + if ( iocpThreads > iocpThreadsMax ) + { + iocpThreads = iocpThreadsMax; + m_log.InfoFormat("[OPENSIM MAIN]: Limiting IO completion threads to {0}",iocpThreads); + } + // set the resulting worker and IO completion thread counts back to ThreadPool + if ( System.Threading.ThreadPool.SetMaxThreads(workerThreads, iocpThreads) ) + { + m_log.InfoFormat("[OPENSIM MAIN]: Threadpool set to {0} worker threads and {1} IO completion threads", workerThreads, iocpThreads); + } + else + { + m_log.Info("[OPENSIM MAIN]: Threadpool reconfiguration failed, runtime defaults still in effect."); + } // Check if the system is compatible with OpenSimulator. // Ensures that the minimum system requirements are met -- cgit v1.1