135 lines
3.4 KiB
Go
135 lines
3.4 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package memorylimiter
|
|
|
|
import (
|
|
"runtime"
|
|
"sync/atomic"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
"go.uber.org/zap"
|
|
|
|
"go.opentelemetry.io/collector/internal/memorylimiter/iruntime"
|
|
)
|
|
|
|
// TestMemoryPressureResponse manipulates results from querying memory and
|
|
// check expected side effects.
|
|
func TestMemoryPressureResponse(t *testing.T) {
|
|
var currentMemAlloc uint64
|
|
ml := &MemoryLimiter{
|
|
usageChecker: memUsageChecker{
|
|
memAllocLimit: 1024,
|
|
},
|
|
mustRefuse: &atomic.Bool{},
|
|
readMemStatsFn: func(ms *runtime.MemStats) {
|
|
ms.Alloc = currentMemAlloc
|
|
},
|
|
logger: zap.NewNop(),
|
|
}
|
|
|
|
// Below memAllocLimit.
|
|
currentMemAlloc = 800
|
|
ml.CheckMemLimits()
|
|
assert.False(t, ml.MustRefuse())
|
|
|
|
// Above memAllocLimit.
|
|
currentMemAlloc = 1800
|
|
ml.CheckMemLimits()
|
|
assert.True(t, ml.MustRefuse())
|
|
|
|
// Check spike limit
|
|
ml.usageChecker.memSpikeLimit = 512
|
|
|
|
// Below memSpikeLimit.
|
|
currentMemAlloc = 500
|
|
ml.CheckMemLimits()
|
|
assert.False(t, ml.MustRefuse())
|
|
|
|
// Above memSpikeLimit.
|
|
currentMemAlloc = 550
|
|
ml.CheckMemLimits()
|
|
assert.True(t, ml.MustRefuse())
|
|
}
|
|
|
|
func TestGetDecision(t *testing.T) {
|
|
t.Run("fixed_limit", func(t *testing.T) {
|
|
d, err := getMemUsageChecker(&Config{MemoryLimitMiB: 100, MemorySpikeLimitMiB: 20}, zap.NewNop())
|
|
require.NoError(t, err)
|
|
assert.Equal(t, &memUsageChecker{
|
|
memAllocLimit: 100 * mibBytes,
|
|
memSpikeLimit: 20 * mibBytes,
|
|
}, d)
|
|
})
|
|
|
|
t.Cleanup(func() {
|
|
GetMemoryFn = iruntime.TotalMemory
|
|
})
|
|
GetMemoryFn = func() (uint64, error) {
|
|
return 100 * mibBytes, nil
|
|
}
|
|
t.Run("percentage_limit", func(t *testing.T) {
|
|
d, err := getMemUsageChecker(&Config{MemoryLimitPercentage: 50, MemorySpikePercentage: 10}, zap.NewNop())
|
|
require.NoError(t, err)
|
|
assert.Equal(t, &memUsageChecker{
|
|
memAllocLimit: 50 * mibBytes,
|
|
memSpikeLimit: 10 * mibBytes,
|
|
}, d)
|
|
})
|
|
}
|
|
|
|
func TestRefuseDecision(t *testing.T) {
|
|
decision1000Limit30Spike30 := newPercentageMemUsageChecker(1000, 60, 30)
|
|
decision1000Limit60Spike50 := newPercentageMemUsageChecker(1000, 60, 50)
|
|
decision1000Limit40Spike20 := newPercentageMemUsageChecker(1000, 40, 20)
|
|
|
|
tests := []struct {
|
|
name string
|
|
usageChecker memUsageChecker
|
|
ms *runtime.MemStats
|
|
shouldRefuse bool
|
|
}{
|
|
{
|
|
name: "should refuse over limit",
|
|
usageChecker: *decision1000Limit30Spike30,
|
|
ms: &runtime.MemStats{Alloc: 600},
|
|
shouldRefuse: true,
|
|
},
|
|
{
|
|
name: "should not refuse",
|
|
usageChecker: *decision1000Limit30Spike30,
|
|
ms: &runtime.MemStats{Alloc: 100},
|
|
shouldRefuse: false,
|
|
},
|
|
{
|
|
name: "should not refuse spike, fixed usageChecker",
|
|
usageChecker: memUsageChecker{
|
|
memAllocLimit: 600,
|
|
memSpikeLimit: 500,
|
|
},
|
|
ms: &runtime.MemStats{Alloc: 300},
|
|
shouldRefuse: true,
|
|
},
|
|
{
|
|
name: "should refuse, spike, percentage usageChecker",
|
|
usageChecker: *decision1000Limit60Spike50,
|
|
ms: &runtime.MemStats{Alloc: 300},
|
|
shouldRefuse: true,
|
|
},
|
|
{
|
|
name: "should refuse, spike, percentage usageChecker",
|
|
usageChecker: *decision1000Limit40Spike20,
|
|
ms: &runtime.MemStats{Alloc: 250},
|
|
shouldRefuse: true,
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
shouldRefuse := test.usageChecker.aboveSoftLimit(test.ms)
|
|
assert.Equal(t, test.shouldRefuse, shouldRefuse)
|
|
})
|
|
}
|
|
}
|