performance: improve pool handling

Signed-off-by: Mrozek, Michal <michal.mrozek@intel.com>
Resolves: NEO-11731

shared/source/dll/options_dll.cpp

@@ -1,11 +1,12 @@
 /*
- * Copyright (C) 2019-2021 Intel Corporation
+ * Copyright (C) 2019-2024 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
  */
 
 #include <cstdint>
+#include <stddef.h>
 
 namespace NEO {
 // AUB file folder location
@@ -13,4 +14,7 @@ const char *folderAUB = ".";
 
 // Initial value for HW tag
 uint32_t initialHardwareTag = 0;
+
+size_t defaultPoolSize = 16777216u;
+
 } // namespace NEO

shared/source/helpers/options.h

@@ -7,6 +7,7 @@
 
 #pragma once
 #include <cstdint>
+#include <stddef.h>
 
 namespace NEO {
 enum class CommandStreamReceiverType {
@@ -38,4 +39,7 @@ extern const char *folderAUB;
 // Initial value for HW tag
 // Set to 0 if using HW or simulator, otherwise 0xFFFFFF00, needs to be lower then CompletionStamp::notReady.
 extern uint32_t initialHardwareTag;
+
+// default size of memory pools
+extern size_t defaultPoolSize;
 } // namespace NEO

shared/source/memory_manager/unified_memory_pooling.cpp

@@ -24,7 +24,7 @@ bool UsmMemAllocPool::initialize(SVMAllocsManager *svmMemoryManager, const Unifi
     this->chunkAllocator.reset(new HeapAllocator(castToUint64(this->pool),
                                                  poolSize,
                                                  chunkAlignment,
-                                                 allocationThreshold / 2));
+                                                 2 * MemoryConstants::megaByte));
     this->poolSize = poolSize;
     this->poolMemoryType = memoryProperties.memoryType;
     return true;

shared/source/memory_manager/unified_memory_pooling.h

@@ -35,9 +35,9 @@ class UsmMemAllocPool {
     void *getPooledAllocationBasePtr(const void *ptr);
     size_t getOffsetInPool(const void *ptr);
 
-    static constexpr auto allocationThreshold = 1 * MemoryConstants::megaByte;
+    static constexpr auto allocationThreshold = 2 * MemoryConstants::megaByte;
     static constexpr auto chunkAlignment = 512u;
-    static constexpr auto startingOffset = 2 * allocationThreshold;
+    static constexpr auto startingOffset = chunkAlignment;
 
   protected:
     size_t poolSize{};