prometheus/cadvisor
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This commit is contained in:
Nan Deng 2014-06-19 14:48:21 -07:00
parent e9111b5527
commit a0071a7f7d
1 changed files with 10 additions and 0 deletions
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10
storage/memory/memory.go
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@ -95,6 +95,16 @@ func (self *containerStorage) RecentStats(numStats int) ([]*info.ContainerStats,
if self.recentStats.Len() < numStats || numStats < 0 {
numStats = self.recentStats.Len()
}
// Stats in the recentStats list are stored in reverse chronological
// order, i.e. most recent stats is in the front.
// numStats will always <= recentStats.Len() so that there will be
// always at least numStats available stats to retrieve. We traverse
// the recentStats list from its head and fill the ret slice in
// reverse order so that the returned slice will be in chronological
// order. The order of the returned slice is not specified by the
// StorageDriver interface, so it is not necessary for other storage
// drivers to return the slice in the same order.
ret := make([]*info.ContainerStats, numStats)
e := self.recentStats.Front()
for i := numStats - 1; i >= 0; i-- {