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Fedora 11 Update: libxcb-1.2-4.fc11



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Fedora Update Notification
FEDORA-2009-7249
2009-07-02 04:59:34
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Name        : libxcb
Product     : Fedora 11
Version     : 1.2
Release     : 4.fc11
URL         : http://xcb.freedesktop.org/
Summary     : A C binding to the X11 protocol
Description :
The X protocol C-language Binding (XCB) is a replacement for Xlib featuring a
small footprint, latency hiding, direct access to the protocol, improved
threading support, and extensibility.

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Update Information:

https://bugs.freedesktop.org/show_bug.cgi?id=17868  Apparently libxcb
accidentally turned on "Nagle's algorithm" with TCP transmissions, which is
especially bad for real-time stuff like X over the network.  This causes a
performance penalty for all X applications over the network, although some apps
are more effected than others.
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ChangeLog:

* Wed Jun 24 2009 Warren Togami <wtogami redhat com> 1.2-4
- disable Nagle's algorithm for X TCP traffic as upstream decided this was a bad idea.
  This should be a significant performance boost.
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References:

  [ 1 ] Bug #442158 - xcb severely cripples X11 performance
        https://bugzilla.redhat.com/show_bug.cgi?id=442158
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This update can be installed with the "yum" update program.  Use 
su -c 'yum update libxcb' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
http://fedoraproject.org/keys
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