
Release Notes
20
For more information on IBS refer to the paper:
Instruction-Based Sampling: A New Performance
Analysis Technique for AMD Family 10h Processors, November 19, 2007
2
Squid Re-base
Squid
has been re-based to the latest stable upstream version (STABLE21). This update
addresses several bugs, including:
• The
squid
init
script always incorrectly returned an exit code of 0. This bug is now fixed,
making squid compliant now with Linux Standard Base.
• Using the
refresh_stale_hit
directive causes error message
Clock going backwards
to appear in the
squid
log file.
• The
squid
installation process did not set up correct ownership of the
/usr/local/squid
directory. With this release, the user
squid
is now the default owner of
/usr/local/squid
.
• Whenever
squid
attempts to use the function
hash_lookup()
, it could abort with
signal 6
.
• Using
squid_unix_group
could cause
squid
to crash.
Event Multi-Processing Model in Apache
httpd
, the Apache HTTP Server package, now includes the experimental
event
Multi-Processing
Model (MPM). This MPM improves performance by using dedicated threads to handle keepalive
connections.
libgomp re-base
libgomp
has been re-based to version 4.3.2-7.el5. The re-base improves
OpenMP
performance
and adds support for
OpenMP
version 3.0 when used with the
gcc43
compiler.
iSCSI target capability
The iSCSI target capability, delivered as part of the Linux Target (tgt) framework, moves from
Technology Preview to full support in Red Hat Enterprise Linux 5.3. The linux target framework
allows a system to serve block-level SCSI storage to other systems that have a SCSI initiator. This
capability is being initially deployed as a Linux iSCSI target, serving storage over a network to any
iSCSI initiator.
To set up the iSCSI target, install the scsi-target-utils RPM and refer to the instructions in:
/usr/
share/doc/scsi-target-utils-
[version]
/README
and
/usr/share/doc/scsi-
target-utils-
[version]
/README.iscsi
4. Driver Updates
4.1. All Architectures
General Driver/Platform Updates
• The Intel High Definition Audio driver in ALSA has been updated.
• High-Definition Multimedia Interface (HDMI) audio support on AMD ATI integrated chipsets has
been updated.
2
http://developer.amd.com/assets/AMD_IBS_paper_EN.pdf
Summary of Contents for ENTERPRISE LINUX 5.3 - RELEASE MANIFEST
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