<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html style="direction: ltr;">
<head>
</head>
<body style="direction: ltr;" bgcolor="#ffffff" text="#000000">
<p style="margin-bottom: 0cm; margin-top: 0pt;">On Monday, October 31st
at
18:30, Haifux will gather to hear Abel Gordon (IBM HRL) talk about</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"> Bare-Metal
Performance for I/O Virtualization</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">Abstract</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">Direct device
assignment enhances the performance of guest virtual machines by
allowing them to communicate with I/O devices without host involvement.
But even with device assignment, guests are still unable to approach
bare-metal performance, because the host intercepts all interrupts,
including those interrupts generated by assigned devices to signal to
guests the completion of their I/O requests. The host involvement
induces multiple unwarranted guest/host context switches, which
significantly hamper the performance of I/O intensive workloads. To
solve this problem, we present ELI (ExitLess Interrupts), a
software-only approach for handling interrupts within guest virtual
machines directly and securely. By removing the host from the interrupt
handling path, ELI manages to improve the throughput and latency of
unmodified, untrusted guests by 1.3x--1.6x, allowing them to reach
97%-100% of bare-metal performance even for the most demanding
I/O-intensive workloads.<br>
<br>
Joint work with Nadav Amit, Nadav Har'El, Muli Ben-Yehuda, Alex Landau,
Assaf Schuster, and Dan Tsafrir</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">Slides to be published
soon (probably Sunday evening or so).<br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"> </p>
<div bidimailui-direction-uniformity="neutral"
bidimailui-generated="true"><br>
================================
</div>
<br>
<div bidimailui-direction-uniformity="ltr" style="direction: ltr;"
bidimailui-generated="true">We meet in Taub (CS Faculty) building,
room 6. For instructions see: <a class="moz-txt-link-freetext"
href="http://www.haifux.org/where.html">http://www.haifux.org/where.html</a>
</div>
<br>
Attendance is free, and you are all
invited!
<br>
<div bidimailui-direction-uniformity="neutral"
bidimailui-generated="true"><br>
================================
</div>
Future Haifux talks include:<br>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">14/11/2011 GPGPU -
Motivation and Architecture by Ofer Rosenberg</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">28/11/2011 GPGPU -
OpenCL by Ofer Rosenberg</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">12/12/2011 GPGPU - Case
studies, Do's and Dont's by Ofer Rosenberg</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">26/12/2011 GPGPU -
Tools and profiling for performance by Ofer Rosenberg</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;">09/01/2012 Maqaf Hataf
Patakh - The new standard Hebrew keyboard layout by Amir E. Aharoni<br>
</p>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<div bidimailui-direction-uniformity="neutral"
bidimailui-generated="true">============================================================
</div>
<br>
<div bidimailui-direction-uniformity="ltr" style="direction: ltr;"
bidimailui-generated="true">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 <a
class="moz-txt-link-abbreviated" href="mailto:webmaster@haifux.org">webmaster@haifux.org</a>
</div>
<p style="margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<pre class="moz-signature" cols="72">--
Web: <a class="moz-txt-link-freetext" href="http://www.billauer.co.il">http://www.billauer.co.il</a>
</pre>
</body>
</html>