IEEE 1588 standard for a precision clock synchronization protocol for networked measurement and control systems

Eidson, John C.; Lee, Kang

doi:10.1109/sficon.2002.1159815

Cited by 208 publications

(96 citation statements)

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“…Hardware timestamping was designed for IEEE 1588 [9] time synchronization, and it can only timestamp one outstanding single packet at a time due to resynchronization requirements, therefore can do only sampling of the latency distribution. It uses a separate hardware queue for the non-timestamped traffic.…”

Section: Software Setupmentioning

confidence: 99%

How to Measure the Killer Microsecond

Primorac

Bugnion

Argyraki

2017

Proceedings of the Workshop on Kernel-Bypass Networks

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Datacenter-networking research requires tools to both generate traffic and accurately measure latency and throughput. While hardwarebased tools have long existed commercially, they are primarily used to validate ASICs and lack flexibility, e.g., to study new protocols. They are also too expensive for academics. The recent development of kernel-bypass networking and advanced NIC features such as hardware timestamping have created new opportunities for accurate latency measurements. This paper compares these two approaches, and in particular whether commodity servers and NICs, when properly configured, can measure the latency distributions as precisely as specialized hardware.Our work shows that well-designed commodity solutions can capture subtle differences in the tail latency of stateless UDP traffic. We use hardware devices as the ground truth, both to measure latency and to forward traffic. We compare the ground truth with observations that combine five latency-measuring clients and five different port forwarding solutions and configurations. State-of-theart software such as MoonGen that uses NIC hardware timestamping provides sufficient visibility into tail latencies to study the effect of subtle operating system configuration changes. We also observe that the kernel-bypass-based TRex software, that only relies on the CPU to timestamp traffic, can also provide solid results when NIC timestamps are not available for a particular protocol or device.

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Section: Software Setupmentioning

confidence: 99%

How to Measure the Killer Microsecond

Primorac

Bugnion

Argyraki

2017

Proceedings of the Workshop on Kernel-Bypass Networks

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“…The second protocol, the Precision Time Protocol (PTP) is defined by version 2 of the IEEE-1588 standard [49]. Originally designed for industrial measurement and control applications where various instruments and machines needed a common clock [50,51], PTP is now commonly utilized in financial markets and other settings to deliver accurate time stamps to computer systems.…”

Section: Delivering Time Stamps To Financial Market Computersmentioning

confidence: 99%

Accurate, Traceable, and Verifiable Time Synchronization for World Financial Markets

Lombardi

Novick

Neville-Neil³

et al. 2016

J. RES. NATL. INST. STAN.

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The National Institute of Standards and Technology (NIST), through a collaboration with Perseus, a global provider of telecommunication services, is providing accurate, traceable, and verifiable time synchronization to stock exchanges in the United States, Europe, and Asia. The paper describes why accurate time is necessary for fair and equitable financial markets and summarizes current and proposed future synchronization requirements in the financial sector. We discuss reference time sources and provide a technical overview of how NIST transfers time to data center hosted stock exchange. We also discuss how Perseus distributes NIST time to financial market customers and describes how the time is verified. Measurement data are presented, along with a discussion of measurement uncertainty.

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“…The communication delay is commonly measured by the "poll and answer" method which is based on the IEEE1588 network time synchronization technology [15][16][17][18]. This technique measures the time delay by transmitting "poll and answer" signals across the communication medium.…”

Section: Definitionsmentioning

confidence: 99%

Reliability Analysis Models for Differential Protection Considering Communication Delays and Errors

Tang

et al. 2015

Energies

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This paper proposes three probability models to assess the impact of communication delays and bit errors on differential protection. First, the mechanism of relay protection malfunction caused by communication delays and bit errors is introduced. In general, a channel's consistent delay or bit error results in refuse-operations, while a channel's inconsistent delay normally causes false trips. Based on the analysis of the probability distributions of communication delays and bit errors, probabilistic models of false trips and refuse-operations are proposed. Simulation results, using typical parameters, are implemented to investigate the effects of communications on the malfunction probability of differential protection.

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IEEE 1588 standard for a precision clock synchronization protocol for networked measurement and control systems

Cited by 208 publications

References 0 publications

How to Measure the Killer Microsecond

How to Measure the Killer Microsecond

Accurate, Traceable, and Verifiable Time Synchronization for World Financial Markets

Reliability Analysis Models for Differential Protection Considering Communication Delays and Errors

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