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The follow ingsitu ations are exam p les of accep table channel connections:• Configu rations or architectu res w here term inals or term inal controllers are norm ally and rou tinely connectedto an I/ O channel of a p rocessor.• Where the p rocessor(s) in the SUT is/ are connected to the local com m u nications netw ork via a front -endp rocessor, w hich is channel connected . The front-end processor is p riced as p art of the SUT.6.5.2D river/SUT Communications Interface6.5.2.1The com m u nications interface betw een the Driver System (s) and the SUT m u st be the m echan ism byw hich the system w ou ld be connected w ith the term inal (see Clau se 2.1.8) in the p rop osed configu ration.6.6Further Requirements on the SUT and D river System6.6.1Restrictions on D river SystemCop ies of any p art of the tested d atabase or file system or its d ata stru ctu res, ind ices, etc.
m ay not be p resent on theDriver System d u ring the test.Comment: Synchronization betw een RTE and SUT is d isallow ed .TPC Benchm ark™C - Stand ard Sp ecification, Revision 5.11 - Page 81 of 1306.6.2Individual Contexts for Emulated TerminalsThe SUT m u st contain context for each term inal em u lated , and m u st m aintain that context for the d u ration of thattest. That context m u st be id entical to the one w hich w ou ld su p p ort a real term inal. A term inal w hich send s atransaction cannot send another u ntil the com p letion of that transaction, w ith the excep tion of the d eferred execu tionof the Delivery transaction .Comment: The context referred to in this clau se sh ou ld consist of inform ation su ch as term inal id entification,netw ork id entification, and other inform ation necessary for a real term inal to be know n to (i.e., configu red on) theSUT.
The intention is to allow p seu d o-conversational transactions. The intent of this clau se is sim p ly to p revent a testsp onsor from m u ltip lexing m essages from a very large nu m ber of em u lated term inals into a few inp u t lines andclaim ing or im p lying that the tested system su p p orts that nu m ber of u sers regard less of w hether the system actu allysu p p orts that nu m ber of real term inals.
It is allow ab le for a term inal to lose its connection to the SUT d u ring theMeasu rem ent Interval as long as its context is not lost and it is reconnected w ithin 90 second s u sing the sam econtext. The loss and re-entry of a u ser m u st be logged and the total nu m ber repo rted .6.6.3D river System D oing More Than RTE FunctionIn the event that a Driver System m u st be u sed to em u late ad d itional fu nctionality other than that d escribed inClau se 6.4, then this m u st be ju stified as follow s:6.6.3.1It m u st be d em onstrated that the architectu re of the p rop osed solu tion m akes it u neconom ical top erform the benchm ark w ithou t p erform ing the w ork in qu estion on the d river (e.g., in a "client/ server" d atabaseim p lem entation, w here the client softw are w ou ld ru n on a large nu m ber of w orkstations).6.6.3.2Ru le 6.6.1 m u st not be violated .6.6.3.3It m u st be d em onstrated that execu tables p laced on the Driver System are fu nctionally equ ivalent tothose on the p rop osed (target) system .6.6.3.4It m u st be d em onstrated that p erform ance resu lts are not enhanced by p erform ing the w ork inqu estion on the Driver System .
The intent is that a test shou ld be ru n to d em onstrate that the fu nctionality,p erform ance, and connectivity of the em u lated solu tion is the sam e as that for the p riced system . These test d atam u st be inclu d ed in the Fu ll Disclosu re Rep ort.For exam p le, if the Driver System em u lates the fu nction of a term inal concentrator, there m u st be test d ata tod em onstrate that a real concentrator configu red w ith the claim ed nu m ber of attached d evices w ou ld d eliver thesam e (or better) resp onse tim e as is m easu red w ith the Driver System . The t erm inal concentrator m u st be con figu redas it w ou ld be in the p riced system and load ed to the m axim u m nu m ber of lines u sed in the p riced configu ration.The d em onstration test m u st be ru n as p art of the SUT configu ration that is ru nning a fu ll load on a p rop erly scaledd atabase. The follow ing d iagram illu strates the configu ration of a p ossible d em onstration test:TPC Benchm ark™C - Stand ard Sp ecification, Revision 5.11 - Page 82 of 130Side-ASide-BRTERTETerminalConcentratorSUTIn the above exam p le, the d ifference in the m easu red resp onse tim e betw een Sid e -A and Sid e-B shou ld be less thanor equ al to any ad ju stm ents to the resp onse tim e rep orted in the Full Disclosu re Rep ort .If the resp onse tim e d elay generated from a d em onstration test is to be u sed in m u ltip le benchm ark tests, th ed em onstration m u st be p erform ed on a SUT generating the highest tp m C rate on the term inal concentrator.6.6.3.5Ind ivid u al contexts m u st continu e to be m aintained from the RTE throu gh to the SUT.6.6.3.6A com p lete fu nctional d iagram of both the benchm ark configu ration and the configu ration of thep rop osed (target) system m u st be d isclosed .
A d etailed list of all softw are and hard w are fu nctionality beingp erform ed on the Driver System , and its interface to the SUT, m u st be d isclosed .6.6.3.7When em u lating end -u ser d evices u tilizing a w eb brow ser, the im p lem ent or shall inclu d e a 0.1 secondresp onse tim e d elay in the em u lation to com p ensate for the d elay encou ntered in the p rop o sed end -to-endconfigu ration for the brow ser d elay.Comment:6.6.4The u se of a m easu red d elay is not allow ed on this non -p riced com p onent.D isclosure of N etw ork Configuration and Emulated PortionsThe test sp onsor shall d escribe com p letely the netw ork configu rations of both the tested services and the prop osedreal (target) services w hich are being rep resented .
A thorou gh exp lanation of exactly w hich p arts of the p rop osedconfigu ration are being rep laced by the Driver System m u st be given.6.6.5Limits on ConcentrationThe level of concentration of m essages betw een the Driver System (s) and the SUT in the benchm ark configu rationm u st not exceed that w hich w ou ld occu r in the p rop osed (target) configu ration. In p articu lar, the num ber ofcom m u nications p ackets w hich can be concentrated m u st not exceed the num ber of term inal s w hich w ou ld bed irectly connected to that concentrator in the p rop osed configu ration.Comment: The intent is to allow only first level concentration on the RTE, bu t d oes not p reclu d e ad d itional levels ofconcentration on the SUT.TPC Benchm ark™C - Stand ard Sp ecification, Revision 5.11 - Page 83 of 1306.6.6Limits on Operator InterventionSystem s m u st be able to ru n for at least 8 hou rs w ithou t op erator intervention.6.6.7Limits on Profile-D irected Softw are OptimizationsSp ecial ru les ap p ly to the u se of so-called p rofile-d irected op tim ization (PDO), in w hich binary execu tables arereord ered or otherw ise op tim ized to best su it the need s of a p articu lar w orkload .
These ru les d o not ap p ly to therou tine u se of PDO by a d atabase vend or in the cou rse of bu ild ing com m ercially available and su p p orted d atabasep rod u cts; su ch u se is not restricted . Rather, the ru les ap p ly to the u se of PDO by a test sp onsor to op tim izeexecu tables of a d atabase prod u ct for a p articu lar w orkload . Su ch op tim ization is p erm issible if all of the follow ingcond itions are satisfied :1. The u se of PDO or sim ilar p roced u res by the test sp onsor m u st be d isclosed .2.
The p roced u re and any scrip ts u sed to p erform the op tim ization m u st be d isclosed .3. The p roced u re u sed by the test sp onsor cou ld reasonably be u sed by a cu stom er on a ship p ed d atabaseexecu table.4. The op tim ized d atabase execu tables resu lting form the ap p lication of the p roced u re m u st be su p p orted bythe d atabase softw are vend or.5. The sam e set of DBMS execu tables m u st be u sed for all au d ited p hases of the benchm ark.TPC Benchm ark™C - Stand ard Sp ecification, Revision 5.11 - Page 84 of 130Clause 7: PRICIN GRu les for p ricing the Priced Configuration and associated softw are and m aintenance are inclu d ed in the cu rrentrevision of the TPC Pricing Sp ecification, located at w w w .tp c.org.7.1Pricing Methodology7.1.1The intent of this section is to d efine the m ethod ology to be u sed in calcu lating the 3 -year p ricing and thep rice/ p erform ance (p rice/ tp m C).
The fu nd am ental p rem ise is that w hat is tested and / or em u lated is p riced andw hat is p riced is tested and / or em u lated . Excep tions to this p rem ise are noted below .7.1.2The p rop osed system to be p riced is the aggregation of the SUT and netw ork com p onents that w ou ld beoffered to achieve the rep orted p erform ance level. Calcu lation of the p riced system consists of:• Price of the SUT as tested and d efined in Clau se 6.
This exclu d es term inals and the term inal netw ork (seeClau se 6.1).• Price of all em u lated com p onents exclu d ing term inals and the term inal netw ork (see Clau se 6.1).• Price of on-line storage for the d atabase p op u lation, 8 hou rs of p rocessing at the rep orted tp m C , d atagenerated by 60 8-hou r d ays of p rocessing at the rep orted tp m C, and the system softw are necessary to create,op erate, ad m inister, and m aintain the ap p lication .• Price of ad d itional p rod u cts that are requ ired for the op eration, ad m inistration or m aintenance of the p ricedsystem .• Price of ad d itional p rod u cts requ ired for ap p lication d evelop m ent.Comment: Any com p onent, for exam p le a N etw ork Interface Card (N IC), m u st be inclu d ed in the p rice of theSUT if it d raw s resou rces for its ow n op eration from the SUT.
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