57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
// Copyright 2021 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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 server_test
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import (
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"runtime"
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"testing"
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"github.com/docker/go-units"
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"github.com/pingcap/tidb/pkg/session"
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"github.com/pingcap/tidb/pkg/store/mockstore"
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"github.com/pingcap/tidb/pkg/util/syncutil"
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"github.com/stretchr/testify/require"
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)
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func TestMemoryLeak(t *testing.T) {
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initAndCloseTiDB := func() {
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store, err := mockstore.NewMockStore(mockstore.WithStoreType(mockstore.EmbedUnistore))
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require.NoError(t, err)
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defer func() { require.NoError(t, store.Close()) }()
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dom, err := session.BootstrapSession(store)
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require.NoError(t, err)
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dom.Close()
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}
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runtime.GC()
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memStat := runtime.MemStats{}
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runtime.ReadMemStats(&memStat)
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oldHeapInUse := memStat.HeapInuse
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for range 20 {
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initAndCloseTiDB()
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}
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runtime.GC()
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runtime.ReadMemStats(&memStat)
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// before the fix, initAndCloseTiDB for 20 times will cost 900 MB memory, so we test for a quite loose upper bound.
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if syncutil.EnableDeadlock {
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require.Less(t, memStat.HeapInuse-oldHeapInUse, uint64(5400*units.MiB))
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} else {
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require.Less(t, memStat.HeapInuse-oldHeapInUse, uint64(900*units.MiB))
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}
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}
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