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This is an automated cherry-pick of #8589
Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed 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, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package util | ||
|
|
||
| import ( | ||
| "math" | ||
| "time" | ||
|
|
||
| "github.com/KimMachineGun/automemlimit/memlimit" | ||
| "github.com/pingcap/log" | ||
| "github.com/pingcap/tidb/util/memory" | ||
| "github.com/pingcap/tiflow/pkg/errors" | ||
| "github.com/shirou/gopsutil/v3/mem" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| const memoryMax uint64 = math.MaxUint64 | ||
|
|
||
| // GetMemoryLimit gets the memory limit of current process based on cgroup. | ||
| // If the cgourp is not set or memory.max is set to max, returns the available | ||
| // memory of host. | ||
| func GetMemoryLimit() (uint64, error) { | ||
| totalMemory, err := memlimit.FromCgroup() | ||
| if err != nil || totalMemory == memoryMax { | ||
| log.Info("no cgroup memory limit", zap.Error(err)) | ||
| totalMemory, err = memory.MemTotal() | ||
| if err != nil { | ||
| return 0, errors.Trace(err) | ||
| } | ||
| } | ||
| return totalMemory, nil | ||
| } | ||
|
|
||
| // CheckMemoryUsage checks if the memory usage is less than the limit. | ||
| func CheckMemoryUsage(limit float64) (bool, error) { | ||
| stat, err := mem.VirtualMemory() | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
| return stat.UsedPercent < limit, nil | ||
| } | ||
|
|
||
| // WaitMemoryAvailable waits until the memory usage is less than the limit. | ||
| func WaitMemoryAvailable(limit float64, timeout time.Duration) error { | ||
| start := time.Now() | ||
| for { | ||
| hasFreeMemory, err := CheckMemoryUsage(limit) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if hasFreeMemory { | ||
| return nil | ||
| } | ||
| if time.Since(start) > timeout { | ||
| return errors.ErrWaitFreeMemoryTimeout.GenWithStackByArgs() | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed 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, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package util | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestGetMemoryLimit(t *testing.T) { | ||
| t.Parallel() | ||
| limit, err := GetMemoryLimit() | ||
| require.NoError(t, err) | ||
| require.Less(t, limit, memoryMax) | ||
| } |