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cache DiskInfo at storage layer for performance (#10586)

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`mc admin info` on busy setups will not move HDD
heads unnecessarily for repeated calls, provides
a better responsiveness for the call overall.

Bonus change allow listTolerancePerSet be N-1
for good entries, to avoid skipping entries
for some reason one of the disk went offline.
This commit is contained in:
Harshavardhana
2020-09-29 09:54:41 -07:00
committed by GitHub
parent 66174692a2
commit 00eb6f6bc9
7 changed files with 78 additions and 38 deletions
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cmd/erasure-zones.go
+4 -4
View File
@@ -662,7 +662,7 @@ func (z *erasureZones) listObjectsNonSlash(ctx context.Context, bucket, prefix,
for _, zone := range z.zones {
zonesEntryChs = append(zonesEntryChs,
zone.startMergeWalksN(ctx, bucket, prefix, "", true, endWalkCh, zone.listTolerancePerSet, false))
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet-1)
}
var objInfos []ObjectInfo
@@ -784,7 +784,7 @@ func (z *erasureZones) listObjectsSplunk(ctx context.Context, bucket, prefix, ma
}
zonesEntryChs = append(zonesEntryChs, entryChs)
zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet-1)
}
entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, zonesListTolerancePerSet)
@@ -876,7 +876,7 @@ func (z *erasureZones) listObjects(ctx context.Context, bucket, prefix, marker,
}
zonesEntryChs = append(zonesEntryChs, entryChs)
zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet-1)
}
entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, zonesListTolerancePerSet)
@@ -1278,7 +1278,7 @@ func (z *erasureZones) listObjectVersions(ctx context.Context, bucket, prefix, m
}
zonesEntryChs = append(zonesEntryChs, entryChs)
zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet)
zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet-1)
}
entries := mergeZonesEntriesVersionsCh(zonesEntryChs, maxKeys, zonesListTolerancePerSet)