Revision - 92cccc2 - ath9k: disable MIB interrupts to fix interrupt storm - origin: https://github.com/torvalds/linux

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27 March 2024, 02:37:15 UTC

Revision 92cccc2cda9a744326bbd9f16c635187af7f8a09 authored by Luis R. Rodriguez on 23 September 2008, 21:28:16 UTC, committed by John W. Linville on 24 September 2008, 19:55:24 UTC

ath9k: disable MIB interrupts to fix interrupt storm

Enabling the MIB interrupts has proven to cause an
interrupt storm after 7 hours of run. We will make use of the
MIB interrupt once we have ANI supported added so for now
to cure this we disable the interrupt.

The interrupt storm can be seen as follows after 7 hours of run
as reported by  Steven Noonan <steven@uplinklabs.net>:

18:28:38          sum   1106.00
18:28:39          sum   1037.62
18:28:40          sum   1069.00
18:28:41          sum   1167.00
18:28:42          sum   1155.00
18:28:43          sum   1339.00
18:28:44          sum  18355.00
18:28:45          sum  17845.45
18:28:46          sum  15285.00
18:28:47          sum  17511.00
18:28:48          sum  17568.69
18:28:49          sum  17704.04
18:28:50          sum  18566.67
18:28:51          sum  18913.13

at 18:28:44 the MIB interrupt kicked off and caused huge
latency which can be seen even on a video he submitted:

http://www.youtube.com/watch?v=4GeCx1gZMpA

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 parent 4c07ab0

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Tip revision: 92cccc2cda9a744326bbd9f16c635187af7f8a09 authored by Luis R. Rodriguez on 23 September 2008, 21:28:16 UTC
ath9k: disable MIB interrupts to fix interrupt storm

Tip revision: 92cccc2

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usr
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.gitignore	-rw-r--r--	867 bytes
.mailmap	-rw-r--r--	3.7 KB
COPYING	-rw-r--r--	18.3 KB
CREDITS	-rw-r--r--	90.7 KB
Kbuild	-rw-r--r--	2.4 KB
MAINTAINERS	-rw-r--r--	99.4 KB
Makefile	-rw-r--r--	55.4 KB
README	-rw-r--r--	16.5 KB
REPORTING-BUGS	-rw-r--r--	3.1 KB

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ath9k: disable MIB interrupts to fix interrupt storm

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