Solve the problem of high CPU usage in Linux Kipmi0 process

Source: Internet
Author: User
Tags cpu usage high cpu usage


Google can not find much information, see a saying: is some platform Interface manager. Do not dare to kill, and then check the data.



Look at the professional saying:
KIPMI is supposed to run with the low priority. When you say it consumes 70-90% of the CPUs, was that constant (does it still consume the processor when they are other TAS KS in the process queue this should have a larger slice of the CPU time) or the 70%/90% comes when the machine is idle?
A second issue to investigate are whether you have pending controller issues (alarms of varying-nature-are not resolve d) and/or older versions of Controller firmware.



View service Chkconfig found that only approximate IPMIEVD services, it is estimated that this, with the information on the internet said the IPMI discrepancy!



FIX: No repair required


The code is as follows
No fix required. You are should ignore increased CPU utilization as it has no impact on actual system performance.


Although this is a use of spare CPU resources to do some interface automatic adjustment task, but look at the amount of resources still afraid of accidents.



Find: Can temporarily reduce


The code is as follows

echo >/sys/module/ipmi_si/parameters/kipmid_max_busy_us www.111cn.net

In our System,after set this parameter,the CPU of the kipmi0 decreased to 15%.


When you do execute the above command, the CPU's single core resources are reduced from 100% to 10%.



Can try this. Permanent reduction


The code is as follows
To make the changes persistent your 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
Options Ipmi_si kipmid_max_busy_us=100


It's written in, but it's not reboot test yet.


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