|
USENIX Windows NT Workshop, 1997
Improving Instruction Locality with Just-In-Time Code Layout
J. Bradley Chen and Bradley D. D. Leupen
Division of Engineering and Applied Sciences
Harvard University
Abstract
This paper describes Just-In-Time code layout (JITCL), a new method for improving the locality of an instruction
reference stream by selecting the order of procedures in the text segment during program execution. By
determining procedure placement dynamically, this method provides an optimized procedure layout without
requiring profile data. For UNIX-style workloads, JITCL provides improvements in instruction cache performance
comparable to profile-based layout strategies, while avoiding the requirement of profile data. The late nature of
this optimization makes it possible to implement procedure orderings across executable and DLL boundaries,
overcoming a limitation of current profile-based techniques. Simulations using Etch [RVL97] on Windows NT
show that inter-module JITCL commonly reduces the memory footprint of executable text by 50%.
- View the full text of this paper in
HTML form and
PDF form.
- If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site.
- To become a USENIX Member, please see our Membership Information.
|
Need help? Use our Contacts page.
Technical Program