CentOS系統進程CPU 100%高佔用率解決辦法

CentOS系統進程CPU 100%高佔用率解決辦法

伺服器top進程上進程看到kipmi0經常佔用很高的CPU甚至是100%

看看專業的說法：
kipmi is supposed to run with low priority. When you say it consumes70-90% of the CPUs, is that constant (does it still consume theprocessor when they are other tasks in the process queue that shouldhave a larger slice of the CPU time) or the 70%/90% comes when themachine is idle?
A second issue to investigate is whether you have pending controllerissues (alarms of varying nature that are not resolved) and/or olderversions of controller firmware.

查看服務chkconfig 發現只有近似 ipmievd 服務，估計就是這個，跟網上資料說的ipmi有出入！

Fix：不需要修複
No fix required. You should ignore increased CPU utilization as it has no impact on actual system performance.

雖然這是一個利用空餘的CPU資源進行一些介面自動調節的任務，但看著占那麼多的資源還是怕出意外。

找到：可以臨時降低

echo 100 > /sys/module/ipmi_si/parameters/kipmid_max_busy_us

In our system,after set this parameter,the cpu of kipmi0 decreased to 15%.確實執行上面命令後，所佔CPU單核資源從100%降低到10%

You can try this.永久性降低
To make the changes persistent you can configure the options for the ipmi_si kernel module.
Create a file in /etc/modprobe.d/, i.e./etc/modprobe.d/ipmi.conf, and add the following content:
# Prevent kipmi0 from consuming 100% CPU

echo "options ipmi_si kipmid_max_busy_us=100">/etc/modprobe.d/ipmi.conf

系統下次重啟會自動調整