richlandswol
Veteran
131 Posts
user info
edit post |
A quick reminder that Google's tech talk is tonight at 5pm in
Harrelson 107. Details are below. Please note the formal presentation
will be followed by any infosession with a panel of Google engineers
and recruiters. Hope to see you there!
________________
Let's Talk.
About Google. About technology. And about you. Let's see where all
this conversation takes us. Google will be on your campus soon. If
you're interested in technical positions at Google, don't miss this
event.
Did we mention free food and t-shirts?
_______________________________
Kernel Tracing
Dick Sites, Software Engineer, Google
North Carolina State University
Harrelson, Room 107
Wednesday, November 9, 2005
5:00 PM
Abstract: Tracing every entry and exit to an operating-system kernel
can reveal much about the performance of production software. Care
must be taken to keep the tracing overhead low (under 1% is good), and
to handle multiple CPUs and multiple threads properly.
Detailed blow-by-blow tracing is a different model of
performance-information gathering than the more-common profiling.
Sample output is shown of some Google-related code. One performance
mystery is discussed, along with its trace output, the eventual
insight, and its resolution. A simple change improved performance by
20x.
Speaker: Dick Sites has been at Google for a year and a half, working mainly on
performance analysis tools. Prior to joining Google, he worked at
Adobe for seven years and at Digital Equipment for 16 years, where he
worked on VAX microcode and Alpha architecture. Dr. Sites went to MIT,
University of North Carolina, and Stanford. He holds over 35 patents
and has co-authored one book.
_______________________________
For more information on jobs at Google, visit http://www.google.com/jobs/students  11/9/2005 10:34:00 AM
|
