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pool.go
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pool.go
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// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package segments
import (
"math"
"runtime"
"sync"
"go.uber.org/atomic"
"github.com/milvus-io/milvus/pkg/util/conc"
"github.com/milvus-io/milvus/pkg/util/hardware"
"github.com/milvus-io/milvus/pkg/util/paramtable"
)
var (
// Use separate pool for search/query
// and other operations (insert/delete/statistics/etc.)
// since in concurrent situation, there operation may block each other in high payload
sqp atomic.Pointer[conc.Pool[any]]
sqOnce sync.Once
dp atomic.Pointer[conc.Pool[any]]
dynOnce sync.Once
loadPool atomic.Pointer[conc.Pool[any]]
loadOnce sync.Once
)
// initSQPool initialize
func initSQPool() {
sqOnce.Do(func() {
pt := paramtable.Get()
pool := conc.NewPool[any](
int(math.Ceil(pt.QueryNodeCfg.MaxReadConcurrency.GetAsFloat()*pt.QueryNodeCfg.CGOPoolSizeRatio.GetAsFloat())),
conc.WithPreAlloc(true),
conc.WithDisablePurge(true),
)
conc.WarmupPool(pool, runtime.LockOSThread)
sqp.Store(pool)
})
}
func initDynamicPool() {
dynOnce.Do(func() {
pool := conc.NewPool[any](
hardware.GetCPUNum(),
conc.WithPreAlloc(false),
conc.WithDisablePurge(false),
conc.WithPreHandler(runtime.LockOSThread), // lock os thread for cgo thread disposal
)
dp.Store(pool)
})
}
func initLoadPool() {
loadOnce.Do(func() {
pool := conc.NewPool[any](
hardware.GetCPUNum()*paramtable.Get().CommonCfg.MiddlePriorityThreadCoreCoefficient.GetAsInt(),
conc.WithPreAlloc(false),
conc.WithDisablePurge(false),
conc.WithPreHandler(runtime.LockOSThread), // lock os thread for cgo thread disposal
)
loadPool.Store(pool)
})
}
// GetSQPool returns the singleton pool instance for search/query operations.
func GetSQPool() *conc.Pool[any] {
initSQPool()
return sqp.Load()
}
// GetDynamicPool returns the singleton pool for dynamic cgo operations.
func GetDynamicPool() *conc.Pool[any] {
initDynamicPool()
return dp.Load()
}
func GetLoadPool() *conc.Pool[any] {
initLoadPool()
return loadPool.Load()
}