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.
We're working with vendors such as Sun and IBM on their
Linux scalability issues.
We've provided several significant modifications to
the Linux kernel.
We've submitted papers for the Usenix Technical
Conference to occur in the summer of 2000.
We're continuing to reach out to potential sponsors.
Work continues on long-term projects.
Niels and Chuck have submitted a paper abstract to the
Usenix Technical Conference on their work with
enhancements to poll() and kernel file descriptor
The paper will also analyze the performance trade-offs
between poll() and using POSIX RT signals to support
The madvise() system call is close to being
incorporated in the current Linux development kernel.
Chuck continues to work with kernel developers on
improving the patch before it is incorporated.
Steve continues to explore generic solutions to thundering herd
issues in the Linux TCP stack.
His accept() paper has been submitted to the
Usenix Technical Conference for the summer of 2000.
Chuck submitted his paper on malloc() performance
to the Usenix Technical Conference for the summer of 2000.
NFSv4 project site
for project status on Andy's NFSv4 implementation.
IBM has contacted the Linux Scalability Project regarding
work on thread performance in Java virtual Machines.
We hope to cement a research relationship with IBM Austin
via their CAS graduate research program within the next two months.
Dell Computer is a new sponsor of the Linux Scalability
Dell has granted the LSP a US$20,000 grant via the
Dell STAR higher education grant program to continue
our work in Linux scalability issues.
Peter wrote a paper describing the Linux Scalability Project
for the upcoming NLUUG conference in Amsterdam, entitled
"Linux en Open Source."
He spent a week there in November presenting the paper
and discussing funding with potential sponsors, as well as
discussing the project with principal Linux developers.
The paper is available as
CITI Tech Report 99-4.
A directory server and certificate management system
is being deployed at CITI to enable research on
public key infrastructure and related technologies.
Based on Netscape products, this infrastructure will
help CITI pursue related areas of research, such as:
managing large clusters of Linux batch computers via GRID
transitioning the U-M security infrastructure to PKI-friendly
integrating CITI's SmartCard work into an operational PKI
We are continuing to pursue research relationships with
Red Hat Software, Silicon Graphics Incorporated, and the
Stichting NLNet Foundation.
The "gift economy" is one of the basic tenets of
open source software development.
Andrew Leonard has published
in Salon magazine examining some of the effects of personal fortunes
on the gift economy.
If you have comments or suggestions, email
linux-scalability @ citi.umich.edu