On Monday, June 17th at 18:30, Haifux will gather to hear a talk by Abel 

     Bare-Metal Performance for I/O Virtualization


Hypervisors implement useful features such as live migration and 
software-defined networking by interposing on their guest virtual 
machines’ I/O activity. Unfortunately, this interposition significantly 
reduces performance and scalability due to competition for resources 
between multiple guests and costly host/guest context switches. We 
present an efficient and scalable software-based I/O virtualization 
system that provides all of the benefits of I/O interposition while 
running host functionality on separate cores dedicated to serving 
multiple guests’ I/O. We find that two dedicated cores can interpose on 
the I/O activity of up to 14 I/O-intensive guests with performance that 
is 1.2x–3x better than the baseline, in some cases exceeding the 
performance of hardware-based I/O virtualization.

Authors: Nadav Har’El, Abel Gordon, and Alex Landau, IBM Research–Haifa; 
Muli Ben-Yehuda, IBM Research–Haifa and Technion IIT; Avishay Traeger 
and Razya Ladelsky, IBM Research–Haifa.


We meet in Taub building, room 6. For instructions see:

Attendance is free, and you are all invited!

Future meetings:

Note: The next meeting is on a Wednesday, 16:00 to 20:00, in Meyer 815

26/06/12 The Technion LyX Conspiracy: Ronen Abravanel and Daniel Vainsencher


We are always interested in hearing your talks and ideas. If you wish to 
give a talk, hold a discussion, or just plan some event haifux might be 
interested in, please contact us at webmas...@haifux.org

Web: http://www.billauer.co.il

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