3ba15c1ddb
/prod/buddyinfo returns data on the free blocks fragments available for use from the kernel. This data is useful when diagnosing possible memory fragmentation. More info can be found in: * https://lwn.net/Articles/7868/ * https://andorian.blogspot.com/2014/03/making-sense-of-procbuddyinfo.html
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
// Copyright 2015 The Prometheus Authors
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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 collector
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import (
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"os"
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"testing"
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)
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func TestBuddyInfo(t *testing.T) {
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file, err := os.Open("fixtures/proc/buddyinfo")
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if err != nil {
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t.Fatal(err)
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}
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defer file.Close()
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buddyInfo, err := parseBuddyInfo(file)
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if err != nil {
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t.Fatal(err)
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}
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if want, got := 4381.0, buddyInfo["0"]["Normal"][0]; want != got {
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t.Errorf("want Node 0, Zone Normal %f, got %f", want, got)
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}
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if want, got := 572.0, buddyInfo["0"]["DMA32"][1]; want != got {
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t.Errorf("want Node 0, Zone DMA32 %f, got %f", want, got)
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}
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}
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