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Assume all swap memory is free on values overflow #9383

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merged 4 commits into from
Dec 6, 2018
Merged

Assume all swap memory is free on values overflow #9383

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62e2033
Assume all swap memory is free on values overflow
jsoriano Dec 4, 2018
1390ac7
Fix changelog
jsoriano Dec 6, 2018
59beb65
Add debug for odd swap values
jsoriano Dec 6, 2018
c13c44c
Rephrase debug message
ruflin Dec 6, 2018
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1 change: 1 addition & 0 deletions CHANGELOG.asciidoc
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Expand Up @@ -38,6 +38,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha1...master[Check the HEAD d
- Fix autodiscover configurations stopping when metadata is missing. {pull}8851[8851]
- Log events at the debug level when dropped by encoding problems. {pull}9251[9251]
- Refresh host metadata in add_host_metadata. {pull}9359[9359]
- Handle cases of free swap being bigger than total swap by assuming no swap is being used. {issue}6271[6271] {pull}[]
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You haven't written the pull number. Maybe I'd add the module involved too


*Auditbeat*

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8 changes: 8 additions & 0 deletions libbeat/metric/system/memory/memory.go
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Expand Up @@ -69,6 +69,14 @@ func GetSwap() (*SwapStat, error) {
return nil, err
}

// This shouldn't happen, but it has been reported to happen and
// this can provoke too big values for used swap.
// Workaround this by assuming that all swap is free in that case.
if swap.Free > swap.Total || swap.Used > swap.Total {
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swap.Free = swap.Total
swap.Used = 0
}

return &SwapStat{Swap: swap}, nil
}

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