Rilasciata FreeBSD 7.0

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FreeBSD 7.0-RELEASE Announcement

Date: Wed, 27 Feb 2008 17:19:52 -0500
From: Ken Smith <kensmith@FreeBSD.org>
To: freebsd-announce@FreeBSD.org
Subject: [FreeBSD-Announce] FreeBSD 7.0-RELEASE AvailableThe FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 7.0-RELEASE. This is the first release from the 7-STABLE branch which introduces many new features along with many improvements to functionality present in the earlier branches. Some of the highlights:

  • Dramatic improvements in performance and SMP scalability shown by various database and other benchmarks, in some cases showing peak performance improvements as high as 350% over FreeBSD 6.X under normal loads and 1500% at high loads. When compared with the best performing Linux kernel (2.6.22 or 2.6.24) performance is 15% better. Results are from benchmarks used to analyze and improve system performance, results with your specific work load may vary. Some of the changes that contribute to this improvement are:
    • The 1:1 libthr threading model is now the default.
    • Finer-grained IPC, networking, and scheduler locking.
    • A major focus on optimizing the SMP architecture that was put in place during the 5.x and 6.x branches.

    Some benchmarks show linear scaling up to 8 CPUs. Many workloads see a significant performance improvement with multicore systems.

  • The ULE scheduler is vastly improved, providing improved performance and interactive response (the 4BSD scheduler is still the default for 7.0 but ULE may become the default for 7.1).
  • Experimental support for Sun’s ZFS filesystem.
  • gjournal can be used to set up journaled filesystems, gvirstor can be used as a virtualized storage provider.
  • Read-only support for the XFS filesystem.
  • The unionfs filesystem has been fixed.
  • iSCSI initiator.
  • TSO and LRO support for some network drivers.
  • Experimental SCTP (Stream Control Transmission Protocol) support (FreeBSD’s being the reference implementation).
  • Much improved wireless (802.11) support.
  • Network link aggregation/trunking (lagg(4)) imported from OpenBSD.
  • JIT compilation to turn BPF into native code, improving packet capture performance.
  • Much improved support for embedded system development for boards based on the ARM architecture.
  • jemalloc, a new and highly scalable user-level memory allocator.
  • freebsd-update(8) provides officially supported binary upgrades to new releases in addition to security fixes and errata patches.
  • X.Org 7.3, KDE 3.5.8, GNOME 2.20.2.
  • GNU C compiler 4.2.1.
  • BIND 9.4.2.

For a complete list of new features and known problems, please see the online release notes and errata list, available at:

https://www.FreeBSD.org/releases/7.0R/relnotes.html
https://www.FreeBSD.org/releases/7.0R/errata.html

For more information about FreeBSD release engineering activities, please see:

https://www.FreeBSD.org/releng/

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