Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Stall Metric to Track Communication Performance



Alan Mink, Wayne J. Salamon, Michael D. Indovina


Probing the communication protocol stack in Linux PC-based clusters to investigate erratic TCP/IP performance has led to a new metric, data stream stall, which is analogous to instruction stream stall in CPUs. Data stream stalling correlates well with unexpected throughput performance dips; the dips are usually due to delayed ACKs or questionable handling of them. We illustrate use of this data stall metric by isolating and correcting the cause of these communication throughput dips in our version of Linux (2.0.29). The availability of this data stream stall metric would be useful feedback to users by indicating deficient communications performance.
Symposium on Computer Architecture and High Performance Computing


ATM, communication protocols, fast ethernet, linux, performance measurement, TCP/IP


Mink, A. , Salamon, W. and Indovina, M. (2000), A Stall Metric to Track Communication Performance, Symposium on Computer Architecture and High Performance Computing (Accessed April 14, 2024)
Created February 15, 2000, Updated February 17, 2017