Fermilab Computing Division

CS Document 1648-v2

Potential Performance Bottleneck in Linux TCP

Document #:
Document type:
Technical Note
Submitted by:
Matt Crawford
Updated by:
Matt Crawford
Document Created:
26 Jul 2006, 11:49
Contents Revised:
11 May 2007, 13:36
Metadata Revised:
11 May 2007, 13:45
Viewable by:
  • Public document
Modifiable by:

Quick Links:
Latest Version

Other Versions:
10 Nov 2006, 15:41
TCP is the most widely used transport protocol on the Internet today. Over the years, espe-cially recently, due to requirements of high bandwidth transmission, various approaches have been proposed to improve TCP performance. The Linux 2.6 kernel is now preempti-ble. It can be interrupted mid-task, making the system more responsive and interactive. However, we have noticed that Linux kernel preemption can interact badly with the per-formance of the networking subsystem. In this paper we investigate the performance bottleneck in Linux TCP. We systematically describe the trip of a TCP packet from its in-gress into a Linux network end system to its final delivery to the application; we study the performance bottleneck in Linux TCP through mathematical modeling and practical ex-periments; finally we propose and test one possible solution to resolve this performance bottleneck in Linux TCP.
Files in Document:
Publication Information:
International Journal of Communication Systems, John Wiley & Sons
DocDB Home ]  [ Search ] [ Authors ] [ Events ] [ Topics ]

DocDB Version 8.8.10, contact Document Database Administrators