NEWS FLASH: Web10Gig has launched!
See web10g.org for all future updates!
No further Web100 updates are expected.
The only recent changes have been the IPv6 userland bugfix (version 1.8) and the annotated tcp-kis backport below.
While the national high-performance network infrastructure has grown
tremendously both in bandwidth and accessibility, it is still common for
applications, hosts, researchers and other users to be unable to take full
advantage of this new and improved infrastructure. Without expert attention
from network engineers, users are unlikely to achieve even 10 Mbps single
stream TCP transfers, despite the fact that the underlying network
infrastructure can support data rates of 100Mbps or more. On unloaded
networks, this poor performance can be attributed primarily to two factors:
host system software (principally TCP) that is optimized for low bandwidth
environments, and the lack of effective instrumentation and tools to diagnose
The Web100 project was created to address these problems. The first is addressed
with automatic TCP buffer tuning. The Web100 work in this area has been merged
with main-line Linux kernel, and is contained in recent releases. To address
the other problem, we have created a set of TCP instruments, defined in
Prototypes of these instruments were implemented in Linux with the
Web100 kernel patch.
Note: Web100 is now several years beyond the end-of-funding.
We are still updating the kernel patchs to track new Linux versions.
A good portion of the user base and developers still monitor the discussion list.
The only remaining support for the Web100 project is via the discussion list.
If you want production quality code, please ask your OS vendor to support RFC 4898 in their products.
The Web100 software implements instruments in the Linux TCP/IP stack. It is
distributed in two pieces: a kernel patch adding the instruments,
and a suite of "userland" libraries and tools for accessing the kernel
Current downloads quick links
For older versions or more information, please visit the
The documents area contains several papers and
presentations about Web100, as well as a status page for the IETF
extended statistics TCP MIB.
Questions? Try out our FAQ and the READMEs included in the software
If you don't find an answer there, please
join the Web100 discussion mailing list.
[ Please also note that due the incredible volume of spam we get, this has been
turned into a closed list that can only be sent to by subscribers. Non-subscriber
email to this list is automatically discarded. ]