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update mongostat from github.com/mongodb/mongo-tools 

closes #323
This commit is contained in:
JP 2015-10-26 17:46:40 -07:00 committed by Cameron Sparr
parent 028bae8f04
commit 7cc60dfb8f
1 changed files with 40 additions and 2 deletions
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42
plugins/mongodb/mongostat.go
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@ -208,10 +208,11 @@ type LockStats struct {
TimeLockedMicros ReadWriteLockTimes `bson:"timeLockedMicros"`
TimeAcquiringMicros ReadWriteLockTimes `bson:"timeAcquiringMicros"`
// AcquireCount is a new field of the lock stats only populated on 3.0 or newer.
// AcquireCount and AcquireWaitCount are new fields of the lock stats only populated on 3.0 or newer.
// Typed as a pointer so that if it is nil, mongostat can assume the field is not populated
// with real namespace data.
AcquireCount *ReadWriteLockTimes `bson:"acquireCount,omitempty"`
AcquireCount *ReadWriteLockTimes `bson:"acquireCount,omitempty"`
AcquireWaitCount *ReadWriteLockTimes `bson:"acquireWaitCount,omitempty"`
}
// ExtraInfo stores additional platform specific information.
@ -246,6 +247,8 @@ var StatHeaders = []StatHeader{
{"res", Always},
{"non-mapped", MMAPOnly | AllOnly},
{"faults", MMAPOnly},
{"lr|lw %", MMAPOnly | AllOnly},
{"lrt|lwt", MMAPOnly | AllOnly},
{" locked db", Locks},
{"qr|qw", Always},
{"ar|aw", Always},
@ -276,6 +279,13 @@ func percentageInt64(value, outOf int64) float64 {
return 100 * (float64(value) / float64(outOf))
}
func averageInt64(value, outOf int64) int64 {
if value == 0 || outOf == 0 {
return 0
}
return value / outOf
}
func (slice lockUsages) Len() int {
return len(slice)
}
@ -288,6 +298,14 @@ func (slice lockUsages) Swap(i, j int) {
slice[i], slice[j] = slice[j], slice[i]
}
// CollectionLockStatus stores a collection's lock statistics.
type CollectionLockStatus struct {
ReadAcquireWaitsPercentage float64
WriteAcquireWaitsPercentage float64
ReadAcquireTimeMicros int64
WriteAcquireTimeMicros int64
}
// LockStatus stores a database's lock statistics.
type LockStatus struct {
DBName string
@ -314,6 +332,9 @@ type StatLine struct {
// Opcounter fields
Insert, Query, Update, Delete, GetMore, Command int64
// Collection locks (3.0 mmap only)
CollectionLocks *CollectionLockStatus
// Cache utilization (wiredtiger only)
CacheDirtyPercent float64
CacheUsedPercent float64
@ -467,6 +488,23 @@ func NewStatLine(oldStat, newStat ServerStatus, key string, all bool, sampleSecs
// This appears to be a 3.0+ server so the data in these fields do *not* refer to
// actual namespaces and thus we can't compute lock %.
returnVal.HighestLocked = nil
// Check if it's a 3.0+ MMAP server so we can still compute collection locks
collectionCheck, hasCollection := oldStat.Locks["Collection"]
if hasCollection && collectionCheck.AcquireWaitCount != nil {
readWaitCountDiff := newStat.Locks["Collection"].AcquireWaitCount.Read - oldStat.Locks["Collection"].AcquireWaitCount.Read
readTotalCountDiff := newStat.Locks["Collection"].AcquireCount.Read - oldStat.Locks["Collection"].AcquireCount.Read
writeWaitCountDiff := newStat.Locks["Collection"].AcquireWaitCount.Write - oldStat.Locks["Collection"].AcquireWaitCount.Write
writeTotalCountDiff := newStat.Locks["Collection"].AcquireCount.Write - oldStat.Locks["Collection"].AcquireCount.Write
readAcquireTimeDiff := newStat.Locks["Collection"].TimeAcquiringMicros.Read - oldStat.Locks["Collection"].TimeAcquiringMicros.Read
writeAcquireTimeDiff := newStat.Locks["Collection"].TimeAcquiringMicros.Write - oldStat.Locks["Collection"].TimeAcquiringMicros.Write
returnVal.CollectionLocks = &CollectionLockStatus{
ReadAcquireWaitsPercentage: percentageInt64(readWaitCountDiff, readTotalCountDiff),
WriteAcquireWaitsPercentage: percentageInt64(writeWaitCountDiff, writeTotalCountDiff),
ReadAcquireTimeMicros: averageInt64(readAcquireTimeDiff, readWaitCountDiff),
WriteAcquireTimeMicros: averageInt64(writeAcquireTimeDiff, writeWaitCountDiff),
}
}
} else {
prevLocks := parseLocks(oldStat)
curLocks := parseLocks(newStat)