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The primary goal of this research is to improve
the scalability and robustness of the Linux operating system
to support greater network server workloads more reliably.
We are specifically interested
in single-system scalability, performance,
and reliability of network server
infrastructure products running on Linux, such as
LDAP directory servers,
IMAP electronic mail servers,
and web servers, among others.
Our mission
- To tackle difficult network server scalability problems that occur on Linux and other UNIX-like operating systems
- To bring talented undergraduate and graduate programmers and researchers into contact with the Linux kernel, stimulating innovative research about Linux
- To act as a focal point for researchers and members of industry who have issues about Linux and its use as a high-performance enterprise quality network server
- To provide development resources for local area programmers and researchers interested in improving Linux
- To feed unencumbered research and modifications back to the Linux community
- To create recruitment opportunities for graduate students and industry sponsors
For more information, read our project work scope, the project's annotated bibliography, or a list of our current work.
Interested in becoming a part of the Linux Scalability Project?
If you're a University of Michigan graduate student or
undergraduate studying computer science who's looking for
interesting work on network performance, Linux O/S internals,
or large-scale computing issues,
contact us!
Personnel
| Peter Honeyman | Director of CITI. |
| Chuck Lever | Network Appliance staffer on site at the University of Michigan. |
| Niels Provos | University of Michigan graduate student interested in networking protocols and security. |
| Stephen Molloy | University of Michigan undergraduate student interested in Linux kernel development. |
| Marius Aamodt Eriksen | University of Michigan undergraduate student interested in Linux networking, performance, and scalability. |
Project Sponsors
- The Center for Information Technology Integration
- Sun-Netscape Alliance
- Sun Microsystems, Incorporated
- Intel Corporation
- Dell Computer Corporation
- IBM
- Network Appliance
Status reports
| 1998: | Nov/Dec | |||||
| 1999: | Jan/Feb | Mar/Apr | May/Jun | Jul/Aug | Sep/Oct | Nov/Dec |
| 2000: | Jan/Feb | Mar/Apr | May/Jun | Jul/Aug | Sep/Oct |
Papers and other reports
- malloc() Performance in a Multithreaded Linux Environment
- Making Linux a World-Class Enterprise Server OS
- Running SPEC benchmarks on Linux
- Scaling poll() on Linux
- Brief: Linux 2.2.3 bforget() bug fix
- Web Server Optimizations - a summary
- Linux Kernel Hash Table Behavior: analysis and improvements
- Accept() scalability on Linux
- CITI Tech Report: Linux Kernel Hash Table Behavior: analysis and improvements
- CITI Tech Report: Scalable Network I/O in Linux
- CITI Tech Report: Malloc() in a Multithreaded Linux Environment
- CITI Tech Report: Analyzing the Overload Behavior of a Simple Web Server
Other resources
- Our patches are available to be downloaded.
- Other related resources are available here.
- Comparisons between Linux and other operating systems
- We maintain a list of useful Linux add-ons.
If you have comments or suggestions about the LSP, email linux-scalability@citi.umich.edu
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