Why do I see "cpu soft lockup" messages in Red Hat Enterprise Linux on a Unisys E7600 or NEC 5800 Ex__Linux

來源:互聯網
上載者:User
Why do I see "cpu soft lockup" messages in Red Hat Enterprise Linux on a Unisys E7600 or NEC 5800 Express with 96 cores?

https://access.redhat.com/knowledge/articles/17187

last modified by Jared Blashka on 08/12/09 - 13:05

You may see "cpu soft lockup" messages in the log files on 96 core systems under heavy load. These are informational messages indicating that a CPU did not respond to a softlockup timer within the timer window (currently 10 seconds on Red Hat Enterprise Linux). They do not indicate a problem with the system.

The system continues to function correctly, although with some performance anomalies related to a CPU spinning on a lock for 10 seconds or more.

The current upstream setting for this softlockup timer parameter is 60 seconds. Testing has shown that we do not see these messages if the parameter is set to 30 seconds or more.

We suggest altering the default value of kernel.softlockup_thresh from 10 to 30, by doing one of the following:

Recommended, affects current and next reboot value:

    sysctl -w kernel.softlockup_thresh=30

Add this line to /etc/sysctl.conf (takes effect on next reboot):

    kernel.softlockup_thresh=30

Change value dynamically; only affects the system's current value:

    echo 30 > /proc/sys/kernel/softlockup_thresh

相關文章

Beyond APAC's No.1 Cloud

19.6% IaaS Market Share in Asia Pacific - Gartner IT Service report, 2018

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。