Making Byzantine Fault Tolerant Systems Tolerate Byzantine Faults

Clement, Allen; Wong, Edmund; Alvisi, Lorenzo; Dahlin, Mike; Marchetti, Mirco

This paper argues for a new approach to building Byzantine fault tolerant replication systems. We observe that although recently developed BFT state machine replication protocols are quite fast, they don't tolerate Byzantine faults very well: a single faulty client or server is capable of rendering PBFT, Q/U, HQ, and Zyzzyva virtually unusable. In this paper, we (1) demonstrate that existing protocols are dangerously fragile, (2) define a set of principles for constructing BFT services that remain useful even when Byzantine faults occur, and (3) apply these principles to construct a new protocol, Aardvark. Aardvark can achieve peak performance within 40% of that of the best existing protocol in our tests and provide a significant fraction of that performance when up to f servers and any number of clients are faulty. We observe useful throughputs between 11706 and 38667 requests per second for a broad range of injected faults.

Making Byzantine Fault Tolerant Systems Tolerate Byzantine Faults / Clement, Allen; Wong, Edmund; Alvisi, Lorenzo; Dahlin, Mike; MARCHETTI, Mirco. - (2009). ((Intervento presentato al convegno The 6th USENIX Symposium on Networked Systems Design and Implementation tenutosi a Boston, MA, USA nel April 22 - 24, 2009.

Data di pubblicazione:	2009
Data di prima pubblicazione:	apr-2009
Titolo:	Making Byzantine Fault Tolerant Systems Tolerate Byzantine Faults
Autore/i:	Clement, Allen; Wong, Edmund; Alvisi, Lorenzo; Dahlin, Mike; MARCHETTI, Mirco
Autore/i UNIMORE:	Clement, Allen Wong, Edmund Alvisi, Lorenzo Dahlin, Mike MARCHETTI, Mirco mostra contributor esterni nascondi contributor esterni
Codice identificativo Scopus:	2-s2.0-85026654819
Nome del convegno:	The 6th USENIX Symposium on Networked Systems Design and Implementation
Luogo del convegno:	Boston, MA, USA
Data del convegno:	April 22 - 24, 2009
Citazione:	Making Byzantine Fault Tolerant Systems Tolerate Byzantine Faults / Clement, Allen; Wong, Edmund; Alvisi, Lorenzo; Dahlin, Mike; MARCHETTI, Mirco. - (2009). ((Intervento presentato al convegno The 6th USENIX Symposium on Networked Systems Design and Implementation tenutosi a Boston, MA, USA nel April 22 - 24, 2009.
Tipologia	Relazione in Atti di Convegno

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http://hdl.handle.net/11380/1135267

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