Tuning parameters change history
| Parameter | 3.5 | 4.1 | 4.1.0.4 | 4.1.1 | 4.2 | 4.2.1 | 4.2.2 |
|---|---|---|---|---|---|---|---|
| adminMode | |||||||
| afmAsyncDelay | Updated | Updated | |||||
| afmDirLookupRefreshInterval | |||||||
| afmDirOpenRefreshInterval | |||||||
| afmDisconnectTimeout | |||||||
| afmExpirationTimeout | |||||||
| afmFileLookupRefreshInterval | |||||||
| afmFileOpenRefreshInterval | |||||||
| afmHardMemThreshold | Not applicable | Not applicable | Not applicable | Not applicable | Added | ||
| afmHashVersion | Not applicable | Added | |||||
| afmNumReadThreads | Not applicable | Added | Updated | ||||
| afmNumWriteThreads | Not applicable | Not applicable | Added | ||||
| afmParallelReadChunkSize | Not applicable | Added | |||||
| afmParallelReadThreshold | Not applicable | Added | |||||
| afmParallelWriteChunkSize | Not applicable | Added | |||||
| afmParallelWriteThreshold | Not applicable | Added | |||||
| afmReadSparseThreshold | Updated | ||||||
| afmSecondaryRW | Not applicable | Not applicable | Not applicable | Not applicable | Added | ||
| afmShowHomeSnapshot | |||||||
| atimeDeferredSeconds | |||||||
| autoload | Updated | ||||||
| automountDir | Updated | ||||||
| cesSharedRoot | Not applicable | Not applicable | Not applicable | Added | Updated | ||
| cifsBypassTraversalChecking | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| cipherList | Updated | ||||||
| cnfsGrace | Not applicable | Added | |||||
| cnfsMountdPort | |||||||
| cnfsNFSDprocs | |||||||
| cnfsReboot | Not applicable | Added | |||||
| cnfsSharedRoot | Updated | ||||||
| cnfsVersions | Not applicable | Added | |||||
| cnfsVIP | Obsoleted | ||||||
| commandAudit | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| dataDiskCacheProtectionMethod | Added | Updated | |||||
| dataDiskWaitTimeForRecovery | |||||||
| dataStructureDump | Updated | ||||||
| deadlockBreakupDelay | Not applicable | Added | |||||
| deadlockDataCollectionDailyLimit | Not applicable | Added | Updated | Updated | |||
| deadlockDataCollectionMinInterval | Not applicable | Not applicable | Not applicable | Added | Updated | Updated | |
| deadlockDetectionThreshold | Not applicable | Added | Updated | Updated | |||
| deadlockDetectionThresholdForShortWaiters | Not applicable | Not applicable | Not applicable | Added | |||
| deadlockDetectionThresholdIfOverloaded | Not applicable | Not applicable | Not applicable | Added | Updated | Obso-leted | |
| deadlockOverloadThreshold | Not applicable | Not applicable | Not applicable | Added | Updated | Updated | |
| debugDataControl | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| defaultHelperNodes | Updated | ||||||
| defaultMountDir | |||||||
| disableInodeUpdateOnFdatasync | Added | ||||||
| dmapiDataEventRetry | |||||||
| dmapiEventTimeout | |||||||
| dmapiMountEvent | |||||||
| dmapiMountTimeout | |||||||
| dmapiSessionFailureTimeout | |||||||
| enbleIPv6 | |||||||
| enforceFilesetQuotaOnRoot | |||||||
| expelDataCollectionDailyLimit | Not applicable | Not applicable | Not applicable | Added | |||
| expelDataCollectionMinInterval | Not applicable | Not applicable | Not applicable | Added | |||
| failureDetectionTime | |||||||
| fastestPolicyCmpThreshold | Not applicable | Not applicable | Not applicable | Added | Updated | ||
| fastestPolicyMaxValidPeriod | Not applicable | Not applicable | Not applicable | Added | |||
| fastestPolicyMinDiffPercent | Not applicable | Not applicable | Not applicable | Added | |||
| fastestPolicyNumReadSamples | Not applicable | Not applicable | Not applicable | Added | |||
| fileHeatLossPercent | |||||||
| fileHeatPeriodMinutes | |||||||
| FIPS1402mode | Not applicable | Added | Updated | ||||
| forceLogWriteOnFdatasync | Added | ||||||
| ignorePrefetchLUNCount | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| lrocData | Not applicable | Added | |||||
| lrocDataMaxFileSize | Not applicable | Added | |||||
| lrocDataStubFileSize | Not applicable | Added | |||||
| lrocDirectories | Not applicable | Added | |||||
| lrocInodes | Not applicable | Added | |||||
| maxblocksize | Updated | Updated | |||||
| maxBufferDescs | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| maxDownDisksForRecovery | Not applicable | Not applicable | Not applicable | Added | |||
| maxFailedNodesForRecovery | Not applicable | Not applicable | Not applicable | Added | |||
| maxFcntlRangesPerFile | |||||||
| maxFilesToCache | |||||||
| maxMBpS | |||||||
| maxMissedPingTimeout | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| maxStatCache | Updated | ||||||
| metadataDiskWaitTimeForRecovery | Updated | ||||||
| minDiskWaitTimeForRecovery | Not applicable | Not applicable | Not applicable | Added | |||
| minMissedPingTimeout | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| mmapRangeLock | |||||||
| mmfsLogTimeStampISO8601 | Added | ||||||
| nfsPrefetchStrategy | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| nistCompliance | Not applicable | Added | |||||
| noSpaceEventInterval | |||||||
| nsdBufSpace | |||||||
| nsdInlineWriteMax | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| nsdMaxWorkerThreads | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| nsdMinWorkerThreads | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| nsdMultiQueue | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| nsdRAIDTracks | |||||||
| nsdRAIDBufferPoolSizePct | |||||||
| nsdServerWaitTimeForMount | |||||||
| nsdServerWaitTimeWindowOnMount | |||||||
| numaMemoryInterleave | Not applicable | Not applicable | Added | ||||
| pagepool | Updated | ||||||
| pagepoolMaxPhysMemPct | |||||||
| pitWorkerThreadsPerNode | Not applicable | Not applicable | Not applicable | Added | |||
| prefetchPct | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| prefetchThreads | Updated | ||||||
| profile | Not applicable | Not applicable | Not applicable | Added | |||
| readReplicaPolicy | Not applicable | Not applicable | Not applicable | Added | Updated | ||
| release=LATEST | Updated | ||||||
| restripeOnDiskFailure | Updated | ||||||
| rpcPerfNumberDayIntervals | Not applicable | Added | |||||
| rpcPerfNumberHourIntervals | Not applicable | Added | |||||
| rpcPerfNumberMinuteIntervals | Not applicable | Added | |||||
| rpcPerfNumberSecondIntervals | Not applicable | Added | |||||
| rpcPerfRawExecBufferSize | Not applicable | Added | |||||
| rpcPerfRawStatBufferSize | Not applicable | Added | |||||
| seqDiscardThreshold | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| sidAutoMapRangeLength | |||||||
| sidAutoMapRange | |||||||
| subnets | |||||||
| syncBuffsPerIteration | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| syncSambaMetadataOps | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added | |
| systemLogLevel | Not applicable | Added | |||||
| tiebreakerDisks | Updated | ||||||
| uidDomain | |||||||
| unmountOnDiskFail | Updated | ||||||
| usePersistentReserve | |||||||
| verbsPorts | Updated | Updated | |||||
| verbsRdma | |||||||
| verbsRdmaCm | Added | ||||||
| verbsRdmaRoCEToS | Not applicable | Not applicable | Added | ||||
| verbsRdmaSend | |||||||
| verbsRdmasPerConnection | Updated | Updated | |||||
| verbsRdmasPerNode | Updated | ||||||
| verbsSendBufferMemoryMB | |||||||
| workerThreads | Not applicable | Not applicable | Not applicable | Not applicable | Added | Updated | |
| worker1Threads | Updated | ||||||
| writebehindThreshold | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Added |
For more information on the configuration attributes, see Changing the GPFS cluster configuration data.