mirror of https://github.com/milvus-io/milvus.git
99 lines
3.1 KiB
Go
99 lines
3.1 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package importv2
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import (
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"sync"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/pkg/v2/log"
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"github.com/milvus-io/milvus/pkg/v2/util/paramtable"
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)
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// MemoryAllocator handles memory allocation and deallocation for import tasks
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type MemoryAllocator interface {
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// TryAllocate attempts to allocate memory of the specified size
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// Returns true if allocation is successful, false if insufficient memory
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TryAllocate(taskID int64, size int64) bool
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// Release releases memory of the specified size
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Release(taskID int64, size int64)
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}
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type memoryAllocator struct {
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systemTotalMemory int64
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usedMemory int64
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mutex sync.RWMutex
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}
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// NewMemoryAllocator creates a new MemoryAllocator instance
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func NewMemoryAllocator(systemTotalMemory int64) MemoryAllocator {
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log.Info("new import memory allocator", zap.Int64("systemTotalMemory", systemTotalMemory))
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ma := &memoryAllocator{
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systemTotalMemory: int64(systemTotalMemory),
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usedMemory: 0,
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}
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return ma
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}
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// TryAllocate attempts to allocate memory of the specified size
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func (ma *memoryAllocator) TryAllocate(taskID int64, size int64) bool {
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ma.mutex.Lock()
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defer ma.mutex.Unlock()
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percentage := paramtable.Get().DataNodeCfg.ImportMemoryLimitPercentage.GetAsFloat()
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memoryLimit := int64(float64(ma.systemTotalMemory) * percentage / 100.0)
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if ma.usedMemory+size > memoryLimit {
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log.Info("memory allocation failed, insufficient memory",
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zap.Int64("taskID", taskID),
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zap.Int64("requestedSize", size),
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zap.Int64("usedMemory", ma.usedMemory),
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zap.Int64("availableMemory", memoryLimit-ma.usedMemory))
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return false
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}
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ma.usedMemory += size
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log.Info("memory allocated successfully",
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zap.Int64("taskID", taskID),
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zap.Int64("allocatedSize", size),
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zap.Int64("usedMemory", ma.usedMemory),
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zap.Int64("availableMemory", memoryLimit-ma.usedMemory))
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return true
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}
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// Release releases memory of the specified size
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func (ma *memoryAllocator) Release(taskID int64, size int64) {
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ma.mutex.Lock()
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defer ma.mutex.Unlock()
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ma.usedMemory -= size
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if ma.usedMemory < 0 {
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ma.usedMemory = 0 // Prevent negative memory usage
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log.Warn("memory release resulted in negative usage, reset to 0",
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zap.Int64("taskID", taskID),
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zap.Int64("releaseSize", size))
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}
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log.Info("memory released successfully",
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zap.Int64("taskID", taskID),
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zap.Int64("releasedSize", size),
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zap.Int64("usedMemory", ma.usedMemory))
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}
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