Parallelism in Xprs

نویسندگان

  • Michael Stonebraker
  • Paul Aoki
  • Margo Seltzer
چکیده

This paper discusses the approach being taken by XPRS, a software data base machine being built at Berkeley, tow ard intra-query parallelism. There are two components to our design. The first is a unique two-dimensional file system called FTD which automatically balances arm activity among multiple disks. The second component is the novel way that we construct parallel plans by making use of information about available main memory and the load average per processor. Both components are described in this paper.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Parallelism and Query Optimization*

Query optimization for parallel execution is an open problem [DeWi90]. However [Hong91] showed that in the context of XPRS the two-phase hypothesis seems to be valid. In this paper we clarify the domain of validity of this hypothesis which states that "the best parallel plan is a parallelization of the best sequential plan". In order to do this, we first clarify the differences between sequenti...

متن کامل

The Design of XPRS

This paper presents an overview of the techniques we are using to build a DBMS at Berkeley that will simultaneously provide high performance and high availability in transaction processing environments, in applications with complex ad-hoc queries and in applications with large objects such as images or CAD layouts. We plan to achieve these goals using a general purpose DBMS and operating system...

متن کامل

A Study of the Role of Repetition of Music in the Nimayee Poems of Akhavan Sales

In this article, the aim of the authors is to study the role of repetition in creating music and parallelism in Nimayee poems in the three collections of poems by Mehdi Akhavan Sales: Zamestan, Akhere Shahname and Az Avesta. Accordingly, the researchers have investigated the various manners of repetition in creating parallelism in the poems at three levels: phonological parallelism, lexical par...

متن کامل

A Comparative Study in Relation to the Translation of the Linguistic Humor

Mark Twain made use of repetition and parallelism as two comedic literary devices to bring comic effect to the readers. Linguistic devices of humor, repetition and parallelism seemed to create many difficulties in the translation of literary texts. The present study applied Delabatista‟s strategies for translating wordplays such as repetition and parallelism in the translation of humorous texts...

متن کامل

Where Neuroscience and Art Embrace The Neuroaesthetics

Neuroscience has recently contributed a lot to the understanding of aesthetic experience features. Science, art and creativity are not really distinctively different entities. The parallelism seen between the properties of art and organizational principals of the brain has been highlighted through neuroaesthetic studies. Aesthetic as a subjective experience has comprehensively been studies thro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1989