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adjust the default number of worker threads created by the TaskGraph & Job systems

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Signed-off-by: rgba16f <82187279+rgba16f@users.noreply.github.com>
This commit is contained in:
rgba16f
2021-10-07 10:51:22 -05:00
parent 49dd0d6331
commit a2c16fa24f
2 changed files with 3 additions and 3 deletions
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Code/Framework/AzCore/AzCore/Jobs/JobManagerComponent.cpp
+1 -1
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@@ -20,7 +20,7 @@
#include <AzCore/Console/IConsole.h>
AZ_CVAR(float, cl_jobThreadsConcurrencyRatio, 0.5f, nullptr, AZ::ConsoleFunctorFlags::Null, "Legacy Job system multiplier on the number of hw threads the machine creates at initialization");
AZ_CVAR(float, cl_jobThreadsConcurrencyRatio, 0.6f, nullptr, AZ::ConsoleFunctorFlags::Null, "Legacy Job system multiplier on the number of hw threads the machine creates at initialization");
AZ_CVAR(uint32_t, cl_jobThreadsNumReserved, 2, nullptr, AZ::ConsoleFunctorFlags::Null, "Legacy Job system number of hardware threads that are reserved for O3DE system threads");
AZ_CVAR(uint32_t, cl_jobThreadsMinNumber, 2, nullptr, AZ::ConsoleFunctorFlags::Null, "Legacy Job system minimum number of worker threads to create after scaling the number of hw threads");
Code/Framework/AzCore/AzCore/Task/TaskGraphSystemComponent.cpp
+2 -2
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@@ -15,7 +15,7 @@
// Create a cvar as a central location for experimentation with switching from the Job system to TaskGraph system.
AZ_CVAR(bool, cl_activateTaskGraph, false, nullptr, AZ::ConsoleFunctorFlags::Null, "Flag clients of TaskGraph to switch between jobs/taskgraph (Note does not disable task graph system)");
AZ_CVAR(float, cl_taskGraphThreadsConcurrencyRatio, 0.75f, nullptr, AZ::ConsoleFunctorFlags::Null, "TaskGraph calculate the number of worker threads to spawn by scaling the number of hw threads, value is clamped between 0.0f and 1.0f");
AZ_CVAR(float, cl_taskGraphThreadsConcurrencyRatio, 1.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "TaskGraph calculate the number of worker threads to spawn by scaling the number of hw threads, value is clamped between 0.0f and 1.0f");
AZ_CVAR(uint32_t, cl_taskGraphThreadsNumReserved, 2, nullptr, AZ::ConsoleFunctorFlags::Null, "TaskGraph number of hardware threads that are reserved for O3DE system threads");
AZ_CVAR(uint32_t, cl_taskGraphThreadsMinNumber, 2, nullptr, AZ::ConsoleFunctorFlags::Null, "TaskGraph minimum number of worker threads to create after scaling the number of hw threads");
@@ -33,7 +33,7 @@ namespace AZ
// min = cl_taskGraphThreadsMinNumber,
// max = number of hardware threads - cl_taskGraphThreadsNumReserved
uint32_t scaledHardwareThreads = AZ::GetMax<uint32_t>( cl_taskGraphThreadsMinNumber, static_cast<uint32_t>(AZStd::floor( 0.5f + AZ::GetClamp<float>(cl_taskGraphThreadsConcurrencyRatio, 0.0f, 1.0f) * static_cast<float>(AZStd::thread::hardware_concurrency() - cl_taskGraphThreadsNumReserved))));
m_taskExecutor = aznew TaskExecutor(scaledHardwareThreads);
m_taskExecutor = aznew TaskExecutor(scaledHardwareThreads);
TaskExecutor::SetInstance(m_taskExecutor);
Interface<TaskGraphActiveInterface>::Register(this);
}