streams 0.9.2.3 Released

Description: OpenSS7 Old News.

Approved for Immediate Release

Jun 24, 2007
OpenSS7 today announced Release 0.9.2.3 of the Linux Fast-STREAMS streams package.

(Edmonton, Alberta -- Jun 24, 2007)   OpenSS7 today announced Release 0.9.2.3 of the Linux Fast-STREAMS streams package. The OpenSS7 Linux Fast-STREAMS package is a High-Performance STREAMS framework for Linux that is compatible with SVR 4.2 MP STREAMS and a host of other commercial UNIX(R) STREAMS implementations, with complete debugging and production release capabilities. It is as a high-performance, production replacement for the buggy and now deprecated Linux STREAMS (LiS).

This is the twelfth OpenSS7 Project release of Linux Fast-STREAMS. LiS was fully deprecated as of a previous release and Linux Fast-STREAMS is now the only STREAMS package contained in the OpenSS7 Master Package (since openss7-0.9.2.D).

This release is a stable, production grade release for Linux Fast-STREAMS. The release includes maintenance support for recent distributions and tool chain, but also includes some performance and feature upgrades and inspection bug fixes.

Major features since the last public release are as follows:

• Significant performance improvements. STREAMS-based pipes in the package now perform a staggering 2 to 5 times (%200 to %500) faster than the old legacy 4.1BSD/SVR3 Linux pipes currently in the kernel. See the STREAMS Performance page for more information.
• The impact of these performance changes is that Linux Fast-STREAMS now runs faster and looser on SMP systems: if your drivers have race conditions they will likely be exacerbated by this version.
• Significant rework of the Stream head and both enabling and back-enabling utilities. Handling of enabling flags QWANTR and QWANTW were not being performed quite properly. Also, service procedures for the read side stream head read queue was added to defer wake-ups when possible. The result is the very significant observed performance improvements (as though it was not fast enough already).
• The strace(8), strerr(8) utilities and log(4) driver have had some corrections. The STREAMS trace logger is now an excellent way for trace logging of fielded production drivers. A number of OpenSS7 drivers have already been converted to use this facility.
• Significant rework of STREAMS synchronization. OSF/1 Mentat style synchronization levels, Solaris style perimeters, and SVR 4.2 style load refusal are fully supported. Some idiosyncrasies of AIX, HP-UX, MacOT and VxWorks are also supported.
• Corrected a few bugs. See BUGS in the release for more information.
• Support build on openSUSE 10.2.
• Support build on Fedora 7 and 2.6.21 kernel.
• Support build on CentOS 5.0 (RHEL5).
• Support build on Ubuntu 7.04.
• Updated to gettext 0.16.1.
• Changes to support build on 2.6.20-1.2307.fc5 and 2.6.20-1.2933.fc6 kernel.
• Supports build on Fedora Core 6.
• Support for recent distributions and tool chains.

This is a public stable production grade release of the package: it deprecates previous releases. Please upgrade to the current release before reporting bugs.

As with other OpenSS7 releases, this release configures, compiles, installs and builds RPMs and DEBs for a wide range of Linux 2.4 and 2.6 RPM- and DPKG-based distributions, and can be used on production kernels without patching or recompiling the kernel.

This package is publicly released under the GNU Public License Version 2. The release is available as an autoconf tarball, SRPM, DSC, and set of binary RPMs and DEBs. See the downloads page for the autoconf tarballs, SRPMs and DSCs. See the streams package page for tarballs, SRPMs, DSCs, and binary RPMs and DEBs.

See ChangeLog and NEWS in the release for more information. Also, see the STREAMS.pdf manual in the release (also in html here).

About The OpenSS7 Project

The OpenSS7 Project is an opensource development project (called OpenSS7) to provide a robust and GPL'ed SS7, SIGTRAN, ISDN and VoIP signalling stack for Linux and other UN*X operating systems. The OpenSS7 Project has existed in one form or another since 1996. For dowloads and further information, see the project website.

About OpenSS7 Corporation

OpenSS7 Corporation is the world-leading supplier of OpenSource SS7, SIGTRAN, ISDN and VoIP signalling products and services that enable the Next Generation Network. A staunch supporter of the Open Source development model, OpenSS7 Corporation funds and supports The OpenSS7 Project by providing commercial licensing, training, consulting, development and support for products delivered from The OpenSS7 Project. For more information on OpenSS7 Corporation, please visit our corporate website.

* This news article contains Forward Looking Statements.

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