On Monday, June 17th at 18:30, Haifux will gather to hear a talk by Abel
Gordon:
Bare-Metal Performance for I/O Virtualization
Abstract
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.
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We meet in Taub building, room 6. For instructions see:
http://www.haifux.org/where.html
Attendance is free, and you are all invited!
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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
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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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