Bug 240678 - [iwlwifi] 99% cpu with ksoftirqd/0
[iwlwifi] 99% cpu with ksoftirqd/0
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
alpha Linux
medium Severity high
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Assigned To: John W. Linville
Brian Brock
Depends On:
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Reported: 2007-05-19 20:59 EDT by kaustubh
Modified: 2007-11-30 17:12 EST (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2007-10-12 10:56:43 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description kaustubh 2007-05-19 20:59:42 EDT
Description of problem:
Fedora release 6.93 (Rawhide)

Issue is with the kernel versions above 2.6.21-1.3116. 

ksoftirqd/0 will use 99% of system resources, i have gone through few posts and
found that it may be related with iwlwifi, I am using D620 dell laptop
0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network
Connection (rev 02)

Currently i am not using wifi, a normal cable is attached but still the cup
consumption is high. I tried to remove it module which took 100% of cpu and than
locked up the box.

I have gone through many posts regarding this. I know that there are some issue
with this card, which are fixed with 2.6.21-1.3167 but those are related with
connectivity and not the cpu consumption( average load increase due to this).
There are many newer kernel available i due to load issue i am not able to use
those. Currently using 2.6.21-1.3116.

Any plans on this ?
Comment 1 Dave Jones 2007-10-11 02:39:05 EDT
still a problem on the current kernels ?
Comment 2 kaustubh 2007-10-12 10:49:57 EDT
Nop Dave, things are working fine now with the latest kernel ... 

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