F/S 9/2 SCIENCES UNCLASSIFIED CSTR-437 NL

F/S 9/2 APFRACEEAUTO 81 D J DEWITT, A A1 53 WISCONSIN UN V-MAOISON P 8 DEPT HAWTHORN OF OF ATAS COMPUTER MAHN SCIENCES ARHTCUEJUN DAAG29-79-C 165 UNCLASSIFIED CSTR-437 NL L

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SCOMPUTER SCIENCES DEPARTMENT University of Wisconsin " Mdison 4,. 9..; A ' odatabase A PERFORMANCE EVALUATION OF MACHINE ARCHITECTURES by Dvid J. DeWitt Pul B. Hwthorn V "4 - _Computer Sciences Technicl Report #437 June 1981 Y 1 26 8269......',... -. ':-+'., ',,. ' :: -........ ::-i~t lt r_: -, L ; L...... 7

A Performnce Evlution of Dtbse Mchine Architectures Dvid J. DeWitt + Pul B. Hwthorn +I *Computer Science Deprtment, Univ. of Wisconsin, Mdison WI. Computer Science nd Mthemtics Deprtment, Lwrence Berkeley Lbortory, Berkeley, CA. This reserch ws prtilly supported by the Ntionl Science Foundtion under grnt t4cs78-1721, the United Sttes Army under contrcts #DAAG29-79-C-165 nd #DAAG29-8-C-41, nd by the Applied Mthemticl Sciences Reserch Progrm of the Office of Energy Reserch U. S. Deprtment of Energy under contrct W- 745-ENG-48.,,,m, - -..

-7~.~ ABSTRACT 4he rpid dvnces in the development of low-cost computer hrdwre hve led to mny proposls for the use of this hrdwre to improve the performnce of dtbse mngement systems. Usully the design proposls re quite vgue bout the performnce of the system with respect to given dt mngement ppliction. In this pper we develop n nlyticl model of the performnce of conventionl dtbse mngement system nd four generic dtbse mchine rchitectures. This model is then used to compre the performnce of ech type of mchine with conventionl DBMS. We demonstrte tht no one type of dtbse mchine is best for executing ll types of queries. We lso show tht for severl clsses of queries certin dtbse mchine designs which hve been proposed re ctully slower thn DBMS on conventionl processor._ (C46' 1~PC~

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