- Issued:
- 2016-02-16
- Updated:
- 2016-02-16
RHBA-2016:0200 - Bug Fix Advisory
Synopsis
rteval bug fix update
Type/Severity
Bug Fix Advisory
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
Topic
Updated rteval packages that fix one bug are now available for Red Hat Enterprise Linux 7.
Description
The rteval packages contain a utility for measuring real-time scheduler latency while under a heavy system load.
This update fixes the following bug:
- The rteval tool uses the hackbench utility to place a load on the system to exercise memory allocation, free and memory copies. Prior to this update, rteval started its loads across the entire set of CPUs, which generated large amounts of cross-node memory traffic. As a consequence, latency spikes could occur. With this update, hackbench has been modified to run a single instance for each Non-Uniform Memory Acces (NUMA) node in the system to better reflect common system tuning for a real-time environment, and the latency spikes no longer occur. (BZ#1284553)
Users of rteval are advised to upgrade to these updated packages, which fix this bug.
Solution
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
Affected Products
- Red Hat Enterprise Linux for Real Time 7 x86_64
Fixes
- BZ - 1284553 - hackbench: modify to run within NUMA node to avoid cross-node traffic
CVEs
(none)
Note:
More recent versions of these packages may be available.
Click a package name for more details.
Red Hat Enterprise Linux for Real Time 7
SRPM | |
---|---|
x86_64 | |
rteval-2.5-1.el7.noarch.rpm | SHA-256: e2f63b26ba688cdb754c7c6c918551035ba6155063b6f32ca37b107867d1f019 |
rteval-common-2.5-1.el7.noarch.rpm | SHA-256: 1427571701eeb7c630053b101a0b24c0fa14f35fe85430bf3252eb1080134537 |
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