Batch to the future: Analyzing timestamp accuracy of high-performance packet I/O engines
Entity
UAM. Departamento de Tecnología Electrónica y de las ComunicacionesPublisher
Institute of Electrical and Electronics EngineersDate
2012-11-26Citation
10.1109/LCOMM.2012.092812.121433
IEEE Communications Letters 16.11 (2012): 1888 - 1891
ISSN
1089-7798 (print); 1558-2558 (online)DOI
10.1109/LCOMM.2012.092812.121433Editor's Version
http://dx.doi.org/10.1109/LCOMM.2012.092812.121433Subjects
Batch processing; Commodity hardware; High-performance packet capture engines; Packet timestamping; TelecomunicacionesNote
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. V. Moreno, P. M. S. Del Rio, J. Ramos, J. J. Garnica, and J. L. Garcia-Dorado, "Batch to the future: Analyzing timestamp accuracy of high-performance packet I/O engines", IEEE Communications Letters, vol. 16, no. 11, pp. 1888 - 1891, November 2012.Rights
© 2012 IEEEAbstract
Novel packet I/O engines allow capturing traffic at multi-10Gb/s using only-software and commodity-hardware systems. This is achieved thanks to the application of techniques such as batch processing. Nevertheless, this feature involves degradation in the timestamp accuracy, which may be relevant for monitoring purposes. We propose two different approaches to mitigate such effect: a simple algorithm to distribute inter-batch time among the packets composing a batch, and a driver modification to poll NIC buffers avoiding batch processing. Experimental results, using both synthetic and real traffic, show that our proposals allow capturing accurately timestamped traffic for monitoring purposes at multi-10Gb/s rates.
Files in this item
Google Scholar:Moreno, Víctor
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Santiago del Río, Pedro María
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Ramos, Javier
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Garnica, Jaime J.
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García Dorado, José Luis
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