mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-01 14:47:38 +00:00
7f4fb34182
It is better developing vmctl tool in VictoriaMetrics repository, so it could be released together with the rest of vmutils tools such as vmalert, vmagent, vmbackup, vmrestore and vmauth.
422 lines
15 KiB
Go
422 lines
15 KiB
Go
// Copyright 2019 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 procfs
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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"strconv"
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"strings"
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"github.com/prometheus/procfs/internal/util"
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)
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// Fscacheinfo represents fscache statistics.
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type Fscacheinfo struct {
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// Number of index cookies allocated
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IndexCookiesAllocated uint64
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// data storage cookies allocated
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DataStorageCookiesAllocated uint64
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// Number of special cookies allocated
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SpecialCookiesAllocated uint64
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// Number of objects allocated
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ObjectsAllocated uint64
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// Number of object allocation failures
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ObjectAllocationsFailure uint64
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// Number of objects that reached the available state
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ObjectsAvailable uint64
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// Number of objects that reached the dead state
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ObjectsDead uint64
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// Number of objects that didn't have a coherency check
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ObjectsWithoutCoherencyCheck uint64
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// Number of objects that passed a coherency check
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ObjectsWithCoherencyCheck uint64
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// Number of objects that needed a coherency data update
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ObjectsNeedCoherencyCheckUpdate uint64
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// Number of objects that were declared obsolete
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ObjectsDeclaredObsolete uint64
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// Number of pages marked as being cached
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PagesMarkedAsBeingCached uint64
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// Number of uncache page requests seen
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UncachePagesRequestSeen uint64
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// Number of acquire cookie requests seen
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AcquireCookiesRequestSeen uint64
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// Number of acq reqs given a NULL parent
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AcquireRequestsWithNullParent uint64
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// Number of acq reqs rejected due to no cache available
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AcquireRequestsRejectedNoCacheAvailable uint64
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// Number of acq reqs succeeded
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AcquireRequestsSucceeded uint64
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// Number of acq reqs rejected due to error
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AcquireRequestsRejectedDueToError uint64
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// Number of acq reqs failed on ENOMEM
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AcquireRequestsFailedDueToEnomem uint64
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// Number of lookup calls made on cache backends
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LookupsNumber uint64
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// Number of negative lookups made
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LookupsNegative uint64
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// Number of positive lookups made
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LookupsPositive uint64
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// Number of objects created by lookup
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ObjectsCreatedByLookup uint64
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// Number of lookups timed out and requeued
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LookupsTimedOutAndRequed uint64
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InvalidationsNumber uint64
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InvalidationsRunning uint64
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// Number of update cookie requests seen
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UpdateCookieRequestSeen uint64
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// Number of upd reqs given a NULL parent
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UpdateRequestsWithNullParent uint64
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// Number of upd reqs granted CPU time
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UpdateRequestsRunning uint64
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// Number of relinquish cookie requests seen
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RelinquishCookiesRequestSeen uint64
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// Number of rlq reqs given a NULL parent
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RelinquishCookiesWithNullParent uint64
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// Number of rlq reqs waited on completion of creation
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RelinquishRequestsWaitingCompleteCreation uint64
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// Relinqs rtr
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RelinquishRetries uint64
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// Number of attribute changed requests seen
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AttributeChangedRequestsSeen uint64
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// Number of attr changed requests queued
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AttributeChangedRequestsQueued uint64
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// Number of attr changed rejected -ENOBUFS
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AttributeChangedRejectDueToEnobufs uint64
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// Number of attr changed failed -ENOMEM
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AttributeChangedFailedDueToEnomem uint64
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// Number of attr changed ops given CPU time
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AttributeChangedOps uint64
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// Number of allocation requests seen
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AllocationRequestsSeen uint64
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// Number of successful alloc reqs
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AllocationOkRequests uint64
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// Number of alloc reqs that waited on lookup completion
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AllocationWaitingOnLookup uint64
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// Number of alloc reqs rejected -ENOBUFS
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AllocationsRejectedDueToEnobufs uint64
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// Number of alloc reqs aborted -ERESTARTSYS
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AllocationsAbortedDueToErestartsys uint64
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// Number of alloc reqs submitted
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AllocationOperationsSubmitted uint64
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// Number of alloc reqs waited for CPU time
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AllocationsWaitedForCPU uint64
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// Number of alloc reqs aborted due to object death
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AllocationsAbortedDueToObjectDeath uint64
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// Number of retrieval (read) requests seen
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RetrievalsReadRequests uint64
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// Number of successful retr reqs
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RetrievalsOk uint64
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// Number of retr reqs that waited on lookup completion
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RetrievalsWaitingLookupCompletion uint64
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// Number of retr reqs returned -ENODATA
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RetrievalsReturnedEnodata uint64
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// Number of retr reqs rejected -ENOBUFS
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RetrievalsRejectedDueToEnobufs uint64
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// Number of retr reqs aborted -ERESTARTSYS
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RetrievalsAbortedDueToErestartsys uint64
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// Number of retr reqs failed -ENOMEM
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RetrievalsFailedDueToEnomem uint64
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// Number of retr reqs submitted
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RetrievalsRequests uint64
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// Number of retr reqs waited for CPU time
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RetrievalsWaitingCPU uint64
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// Number of retr reqs aborted due to object death
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RetrievalsAbortedDueToObjectDeath uint64
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// Number of storage (write) requests seen
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StoreWriteRequests uint64
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// Number of successful store reqs
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StoreSuccessfulRequests uint64
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// Number of store reqs on a page already pending storage
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StoreRequestsOnPendingStorage uint64
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// Number of store reqs rejected -ENOBUFS
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StoreRequestsRejectedDueToEnobufs uint64
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// Number of store reqs failed -ENOMEM
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StoreRequestsFailedDueToEnomem uint64
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// Number of store reqs submitted
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StoreRequestsSubmitted uint64
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// Number of store reqs granted CPU time
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StoreRequestsRunning uint64
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// Number of pages given store req processing time
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StorePagesWithRequestsProcessing uint64
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// Number of store reqs deleted from tracking tree
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StoreRequestsDeleted uint64
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// Number of store reqs over store limit
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StoreRequestsOverStoreLimit uint64
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// Number of release reqs against pages with no pending store
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ReleaseRequestsAgainstPagesWithNoPendingStorage uint64
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// Number of release reqs against pages stored by time lock granted
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ReleaseRequestsAgainstPagesStoredByTimeLockGranted uint64
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// Number of release reqs ignored due to in-progress store
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ReleaseRequestsIgnoredDueToInProgressStore uint64
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// Number of page stores cancelled due to release req
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PageStoresCancelledByReleaseRequests uint64
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VmscanWaiting uint64
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// Number of times async ops added to pending queues
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OpsPending uint64
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// Number of times async ops given CPU time
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OpsRunning uint64
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// Number of times async ops queued for processing
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OpsEnqueued uint64
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// Number of async ops cancelled
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OpsCancelled uint64
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// Number of async ops rejected due to object lookup/create failure
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OpsRejected uint64
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// Number of async ops initialised
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OpsInitialised uint64
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// Number of async ops queued for deferred release
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OpsDeferred uint64
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// Number of async ops released (should equal ini=N when idle)
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OpsReleased uint64
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// Number of deferred-release async ops garbage collected
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OpsGarbageCollected uint64
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// Number of in-progress alloc_object() cache ops
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CacheopAllocationsinProgress uint64
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// Number of in-progress lookup_object() cache ops
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CacheopLookupObjectInProgress uint64
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// Number of in-progress lookup_complete() cache ops
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CacheopLookupCompleteInPorgress uint64
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// Number of in-progress grab_object() cache ops
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CacheopGrabObjectInProgress uint64
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CacheopInvalidations uint64
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// Number of in-progress update_object() cache ops
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CacheopUpdateObjectInProgress uint64
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// Number of in-progress drop_object() cache ops
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CacheopDropObjectInProgress uint64
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// Number of in-progress put_object() cache ops
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CacheopPutObjectInProgress uint64
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// Number of in-progress attr_changed() cache ops
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CacheopAttributeChangeInProgress uint64
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// Number of in-progress sync_cache() cache ops
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CacheopSyncCacheInProgress uint64
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// Number of in-progress read_or_alloc_page() cache ops
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CacheopReadOrAllocPageInProgress uint64
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// Number of in-progress read_or_alloc_pages() cache ops
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CacheopReadOrAllocPagesInProgress uint64
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// Number of in-progress allocate_page() cache ops
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CacheopAllocatePageInProgress uint64
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// Number of in-progress allocate_pages() cache ops
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CacheopAllocatePagesInProgress uint64
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// Number of in-progress write_page() cache ops
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CacheopWritePagesInProgress uint64
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// Number of in-progress uncache_page() cache ops
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CacheopUncachePagesInProgress uint64
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// Number of in-progress dissociate_pages() cache ops
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CacheopDissociatePagesInProgress uint64
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// Number of object lookups/creations rejected due to lack of space
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CacheevLookupsAndCreationsRejectedLackSpace uint64
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// Number of stale objects deleted
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CacheevStaleObjectsDeleted uint64
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// Number of objects retired when relinquished
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CacheevRetiredWhenReliquished uint64
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// Number of objects culled
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CacheevObjectsCulled uint64
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}
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// Fscacheinfo returns information about current fscache statistics.
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// See https://www.kernel.org/doc/Documentation/filesystems/caching/fscache.txt
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func (fs FS) Fscacheinfo() (Fscacheinfo, error) {
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b, err := util.ReadFileNoStat(fs.proc.Path("fs/fscache/stats"))
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if err != nil {
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return Fscacheinfo{}, err
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}
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m, err := parseFscacheinfo(bytes.NewReader(b))
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if err != nil {
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return Fscacheinfo{}, fmt.Errorf("failed to parse Fscacheinfo: %v", err)
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}
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return *m, nil
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}
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func setFSCacheFields(fields []string, setFields ...*uint64) error {
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var err error
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if len(fields) < len(setFields) {
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return fmt.Errorf("Insufficient number of fields, expected %v, got %v", len(setFields), len(fields))
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}
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for i := range setFields {
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*setFields[i], err = strconv.ParseUint(strings.Split(fields[i], "=")[1], 0, 64)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func parseFscacheinfo(r io.Reader) (*Fscacheinfo, error) {
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var m Fscacheinfo
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s := bufio.NewScanner(r)
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for s.Scan() {
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fields := strings.Fields(s.Text())
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if len(fields) < 2 {
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return nil, fmt.Errorf("malformed Fscacheinfo line: %q", s.Text())
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}
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switch fields[0] {
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case "Cookies:":
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err := setFSCacheFields(fields[1:], &m.IndexCookiesAllocated, &m.DataStorageCookiesAllocated,
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&m.SpecialCookiesAllocated)
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if err != nil {
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return &m, err
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}
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case "Objects:":
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err := setFSCacheFields(fields[1:], &m.ObjectsAllocated, &m.ObjectAllocationsFailure,
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&m.ObjectsAvailable, &m.ObjectsDead)
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if err != nil {
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return &m, err
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}
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case "ChkAux":
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err := setFSCacheFields(fields[2:], &m.ObjectsWithoutCoherencyCheck, &m.ObjectsWithCoherencyCheck,
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&m.ObjectsNeedCoherencyCheckUpdate, &m.ObjectsDeclaredObsolete)
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if err != nil {
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return &m, err
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}
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case "Pages":
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err := setFSCacheFields(fields[2:], &m.PagesMarkedAsBeingCached, &m.UncachePagesRequestSeen)
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if err != nil {
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return &m, err
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}
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case "Acquire:":
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err := setFSCacheFields(fields[1:], &m.AcquireCookiesRequestSeen, &m.AcquireRequestsWithNullParent,
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&m.AcquireRequestsRejectedNoCacheAvailable, &m.AcquireRequestsSucceeded, &m.AcquireRequestsRejectedDueToError,
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&m.AcquireRequestsFailedDueToEnomem)
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if err != nil {
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return &m, err
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}
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case "Lookups:":
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err := setFSCacheFields(fields[1:], &m.LookupsNumber, &m.LookupsNegative, &m.LookupsPositive,
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&m.ObjectsCreatedByLookup, &m.LookupsTimedOutAndRequed)
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if err != nil {
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return &m, err
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}
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case "Invals":
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err := setFSCacheFields(fields[2:], &m.InvalidationsNumber, &m.InvalidationsRunning)
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if err != nil {
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return &m, err
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}
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case "Updates:":
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err := setFSCacheFields(fields[1:], &m.UpdateCookieRequestSeen, &m.UpdateRequestsWithNullParent,
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&m.UpdateRequestsRunning)
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if err != nil {
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return &m, err
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}
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case "Relinqs:":
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err := setFSCacheFields(fields[1:], &m.RelinquishCookiesRequestSeen, &m.RelinquishCookiesWithNullParent,
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&m.RelinquishRequestsWaitingCompleteCreation, &m.RelinquishRetries)
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if err != nil {
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return &m, err
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}
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case "AttrChg:":
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err := setFSCacheFields(fields[1:], &m.AttributeChangedRequestsSeen, &m.AttributeChangedRequestsQueued,
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&m.AttributeChangedRejectDueToEnobufs, &m.AttributeChangedFailedDueToEnomem, &m.AttributeChangedOps)
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if err != nil {
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return &m, err
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}
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case "Allocs":
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if strings.Split(fields[2], "=")[0] == "n" {
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err := setFSCacheFields(fields[2:], &m.AllocationRequestsSeen, &m.AllocationOkRequests,
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&m.AllocationWaitingOnLookup, &m.AllocationsRejectedDueToEnobufs, &m.AllocationsAbortedDueToErestartsys)
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if err != nil {
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return &m, err
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}
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} else {
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err := setFSCacheFields(fields[2:], &m.AllocationOperationsSubmitted, &m.AllocationsWaitedForCPU,
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&m.AllocationsAbortedDueToObjectDeath)
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if err != nil {
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return &m, err
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}
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}
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case "Retrvls:":
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if strings.Split(fields[1], "=")[0] == "n" {
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err := setFSCacheFields(fields[1:], &m.RetrievalsReadRequests, &m.RetrievalsOk, &m.RetrievalsWaitingLookupCompletion,
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&m.RetrievalsReturnedEnodata, &m.RetrievalsRejectedDueToEnobufs, &m.RetrievalsAbortedDueToErestartsys,
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&m.RetrievalsFailedDueToEnomem)
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if err != nil {
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return &m, err
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}
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} else {
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err := setFSCacheFields(fields[1:], &m.RetrievalsRequests, &m.RetrievalsWaitingCPU, &m.RetrievalsAbortedDueToObjectDeath)
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if err != nil {
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return &m, err
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}
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}
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case "Stores":
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if strings.Split(fields[2], "=")[0] == "n" {
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err := setFSCacheFields(fields[2:], &m.StoreWriteRequests, &m.StoreSuccessfulRequests,
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&m.StoreRequestsOnPendingStorage, &m.StoreRequestsRejectedDueToEnobufs, &m.StoreRequestsFailedDueToEnomem)
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if err != nil {
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return &m, err
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}
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} else {
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err := setFSCacheFields(fields[2:], &m.StoreRequestsSubmitted, &m.StoreRequestsRunning,
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&m.StorePagesWithRequestsProcessing, &m.StoreRequestsDeleted, &m.StoreRequestsOverStoreLimit)
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if err != nil {
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return &m, err
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}
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}
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case "VmScan":
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err := setFSCacheFields(fields[2:], &m.ReleaseRequestsAgainstPagesWithNoPendingStorage,
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&m.ReleaseRequestsAgainstPagesStoredByTimeLockGranted, &m.ReleaseRequestsIgnoredDueToInProgressStore,
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&m.PageStoresCancelledByReleaseRequests, &m.VmscanWaiting)
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if err != nil {
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return &m, err
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}
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case "Ops":
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if strings.Split(fields[2], "=")[0] == "pend" {
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err := setFSCacheFields(fields[2:], &m.OpsPending, &m.OpsRunning, &m.OpsEnqueued, &m.OpsCancelled, &m.OpsRejected)
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if err != nil {
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return &m, err
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}
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} else {
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err := setFSCacheFields(fields[2:], &m.OpsInitialised, &m.OpsDeferred, &m.OpsReleased, &m.OpsGarbageCollected)
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if err != nil {
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return &m, err
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}
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}
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case "CacheOp:":
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if strings.Split(fields[1], "=")[0] == "alo" {
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err := setFSCacheFields(fields[1:], &m.CacheopAllocationsinProgress, &m.CacheopLookupObjectInProgress,
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&m.CacheopLookupCompleteInPorgress, &m.CacheopGrabObjectInProgress)
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if err != nil {
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return &m, err
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}
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} else if strings.Split(fields[1], "=")[0] == "inv" {
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err := setFSCacheFields(fields[1:], &m.CacheopInvalidations, &m.CacheopUpdateObjectInProgress,
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&m.CacheopDropObjectInProgress, &m.CacheopPutObjectInProgress, &m.CacheopAttributeChangeInProgress,
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&m.CacheopSyncCacheInProgress)
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if err != nil {
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return &m, err
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}
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} else {
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err := setFSCacheFields(fields[1:], &m.CacheopReadOrAllocPageInProgress, &m.CacheopReadOrAllocPagesInProgress,
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&m.CacheopAllocatePageInProgress, &m.CacheopAllocatePagesInProgress, &m.CacheopWritePagesInProgress,
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&m.CacheopUncachePagesInProgress, &m.CacheopDissociatePagesInProgress)
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if err != nil {
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return &m, err
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}
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}
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case "CacheEv:":
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err := setFSCacheFields(fields[1:], &m.CacheevLookupsAndCreationsRejectedLackSpace, &m.CacheevStaleObjectsDeleted,
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&m.CacheevRetiredWhenReliquished, &m.CacheevObjectsCulled)
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if err != nil {
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return &m, err
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}
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}
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}
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return &m, nil
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}
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