【翻译自mos文章】Oracle Linux 5.9到Oracle Linux 6.4 之间的bug--Wrong Kernel Statistic

Oracle Linux 5.9到Oracle Linux 6.4 之间的bug--Wrong Kernel Statistic in Version 2.6.39-400.X.X

参考自:

Wrong Kernel Statistic in Version 2.6.39-400.X.X (Doc ID 1552713.1)

适用于:

Linux OS - Version Oracle Linux 5.9 with Unbreakable Enterprise Kernel [2.6.39] to Oracle Linux 6.4 with Unbreakable Enterprise Kernel [2.6.39] [Release OL5U9 to OL6U4]

Linux x86-64

Linux x86

症状:

When running continuously, both mpstat and sar will occasionally report 0% for all of the various cpu times, including idle.  A single mpstat will

report odd usage even on a mostly idle machine, for example:

Linux 2.6.39-400.17.2.el6uek.x86_64 (test.oracle.com)

11:14:25  CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle

11:14:25  all 3.44  0.10 4.38    3.97 0.00  0.06  50.82   0.00 37.23

改变:

The system was upgraded to a UEK kernel with a version later than 2.6.39-400

原因:

unpublished BUG 16567925 - INCORRECT CPU UTILIZATION STATS WITH 2.6.39-400.17.1

解决方案:

Upgrade to kernel 2.6.39-400.22.1 or later.

时间: 2024-12-08 16:11:51

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