Mon 19 Jun 2023 17:40 - 18:00 at Cypress 2 - PLDI: Concurrency & Parallelism Chair(s): Calin Cascaval

Understanding and debugging the performance of distributed systems is a notoriously hard task, but a critical one. Traditional techniques like logging, tracing, and benchmarking represent a best-effort way to find performance bugs, but they either require a full deployment to be effective or can only find bugs after they manifest. Even with such techniques in place, real deployments often exhibit performance bugs that cause unwanted behavior.

In this paper, we present Performal, a novel methodology that leverages the recent advances in formal verification to provide rigorous latency guarantees for real, complex distributed systems. The task is not an easy one: it requires carefully decoupling the formal proofs from the execution environment, formally defining latency properties, and proving them on real, distributed implementations. We used Performal to prove rigorous upper bounds for the latency of three applications: a distributed lock, ZooKeeper and a MultiPaxos-based State Machine Replication system. Our experimental evaluation shows that these bounds are a good proxy for the behavior of the deployed system and can be used to identify performance bugs in real-world systems.

Mon 19 Jun

Displayed time zone: Eastern Time (US & Canada) change

16:00 - 18:00
PLDI: Concurrency & ParallelismPLDI Research Papers at Cypress 2
Chair(s): Calin Cascaval Google Research

#pldi-mon-1600-concurrency-cypress Discord icon small YouTube icon small

16:00
20m
Talk
Type-Checking CRDT Convergence
PLDI Research Papers
George Zakhour University of St.Gallen, Pascal Weisenburger University of St. Gallen, Guido Salvaneschi University of St. Gallen
DOI Pre-print
16:20
20m
Talk
Reliable Actors with Retry Orchestration
PLDI Research Papers
Olivier Tardieu IBM Research, David Grove IBM Research, Gheorghe-Teodor Bercea IBM Research, Paul Castro IBM Research, Jaroslaw Cwiklik IBM Research, Edward Epstein IBM Research
DOI
16:40
20m
Talk
Dynamic Partial Order Reduction for Checking Correctness Against Transaction Isolation Levels
PLDI Research Papers
Ahmed Bouajjani IRIF, Université Paris Diderot, Constantin Enea LIX, CNRS, Ecole Polytechnique, Enrique Román-Calvo Université Paris Cité - CNRS - IRIF
DOI
17:00
20m
Talk
Responsive Parallelism with Synchronization
PLDI Research Papers
Stefan K. Muller Illinois Institute of Technology, Kyle Singer Washington University in St. Louis, USA, Devyn Terra Keeney Illinois Institute of Technology, Andrew Neth Illinois Institute of Technology, Kunal Agrawal Washington University in St. Louis, USA, I-Ting Angelina Lee Washington University in St. Louis, USA, Umut A. Acar Carnegie Mellon University
DOI
17:20
20m
Talk
Parallelism in a Region Inference Context
PLDI Research Papers
Martin Elsman University of Copenhagen, Denmark, Troels Henriksen University of Copenhagen, Denmark
DOI
17:40
20m
Talk
Performal: Formal Verification of Latency Properties for Distributed Systems
PLDI Research Papers
Nuda Zhang University of Michigan, Upamanyu Sharma Massachusetts Institute of Technology, Manos Kapritsos University of Michigan, USA
DOI