2022.2

Merge engine
Generally,launchingarelativelyhighnumberofMergeenginesresultsinbetterperformance,as
Mergeenginesareinvolvedinthecreationofoutputofallkinds(Print,EmailandWeb)andbecause
contentcreationisrelativelytime-consuming.
DataMapper engine
AddingDataMapperenginesmightbeusefulinthefollowingcircumstances:
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Whenlargedatamappingoperationshavetoberunsimultaneouslyformanyjobs.
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WhenfrequentlyusingPDForXMLbasedinput.ParticularlyinthecaseofXMLinputwithlarge
individualrecords.
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WhentheAll In OnepluginisusedofteninWorkflowconfigurationsandtherearemorethantwo
Mergeenginesrunning.
TheConnectMariaDBdatabaseneedsafaststoragesystem(SSDorotherfastdevices)tobeableto
keepupwithtwoormoreDataMapperengines.
Whenthedatabaseisinstalledonasystemwithaslowharddrive,addingaDataMapperenginemay
notincreasetheoverallperformance.
Weaver engine
AddingextraWeaver(Output)engine(s)mightbeusefulwhenlargePrintjobsaretoberunsim-
ultaneouslywithsmallerPrintjobs.
Memory per engine
Bydefault,eachengineissettouseuptoapredeterminedamountofRAM.Tomakeoptimumuseofa
machine'scapabilitiesitmightbeusefultoincreasetheamountofmemorythatthevariousenginescan
use.
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DataMapperenginesmayperformbetterwithgreatermemorywhenrunningjobscontainingalot
ofdata.
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Forcomplextemplateswithalotofpagesperdocument,thereisachancethatMergeengines
willrunbetterwithmorememory.
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ThemaximummemoryusageofaWeaverenginecanberelevantforjobswithheavygraphics;
orforjobsthatuseCut&Stackimpositioning;orforjobsusingparticularvariablesthatentail
pagebuffering(see"Contentvariables"onpage1333).
TheMaximum memory per enginesettingisfoundintheEnginespreferences.
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