Sökning: onr:"swepub:oai:DiVA.org:liu-35742" >
Value-driven multi-...
-
Hansson, Jörgen,1970-Linköpings universitet,Institutionen för datavetenskap,Tekniska högskolan
(författare)
Value-driven multi-class overload management in real-time database systems
Förlag, utgivningsår, omfång ...
-
Linköping :Linköpings universitet,1999
-
171 s.
-
printrdacarrier
Nummerbeteckningar
-
LIBRIS-ID:oai:DiVA.org:liu-35742
-
ISBN:9172195428
-
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-35742URI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:vet swepub-contenttype
-
Ämneskategori:dok swepub-publicationtype
Serie
-
Linköping Studies in Science and Technology. Dissertations,0345-7524 ;595
Anmärkningar
-
In complex real-time applications, real-time systems handle significant amounts of information that must be managed efficiently, motivating the need for incorporating real-time database management into real-time systems. However, resource management in real-time database systems is a complex issue. Since these systems often operate in environments of imminent and transient overloads, efficient overload handling is crucial to the performance of a real-time database system.In this thesis, we focus on dynamic overload management in real-time database systems. The multi-class workload consists of transaction classes having critical transactions with contingency transactions and non-critical transactions. Non-critical transaction classes may have additional requirements specifying the minimum acceptable completion ratios that should be met in order to maintain system correctness. We propose a framework which has been implemented and evaluated for resolving transient overloads in such workloads.The contributions of our work are fourfold as the framework consists of (i) a new scheduling architecture and (ii) a strategy for resolving transient overloads by re-allocating resources, (iii) a value-driven overload management algorithm (OR-ULD) that supports the strategy, running in O(n log n) time (where n is the number of transactions), and (iv) a bias control mechanism (OR-ULD/BC). The performance of OR-ULD and OR-ULD/BC is evaluated by extensive simulations. Results show that, within a specified operational envelope, OR-ULD enforces critical time constraints for multi-class transaction workloads and OR-ULD/BC further enforces minimum class completion ratio requirements.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Linköpings universitetInstitutionen för datavetenskap
(creator_code:org_t)
Internetlänk
Hitta via bibliotek
Till lärosätets databas