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05 April 2024, 19:05:47 UTC
Revision 8d4698f7a54a492a1b96c505b30fe750ae3e61d5 authored by Stephen Hemminger on 08 September 2008, 20:44:40 UTC, committed by David S. Miller on 08 September 2008, 20:46:54 UTC 
bridge: don't allow setting hello time to zero
 
Dushan Tcholich reports that on his system ksoftirqd can consume
between %6 to %10 of cpu time, and cause ~200 context switches per
second.

He then correlated this with a report by bdupree@techfinesse.com:

	http://marc.info/?l=linux-kernel&m=119613299024398&w=2

and the culprit cause seems to be starting the bridge interface.
In particular, when starting the bridge interface, his scripts
are specifying a hello timer interval of "0".

The bridge hello time can't be safely set to values less than 1
second, otherwise it is possible to end up with a runaway timer.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent d315492
History
Tip revision: 8d4698f7a54a492a1b96c505b30fe750ae3e61d5 authored by Stephen Hemminger on 08 September 2008, 20:44:40 UTC
bridge: don't allow setting hello time to zero
Tip revision: 8d4698f
File Mode Size
ccids
Kconfig -rw-r--r-- 1.7 KB
Makefile -rw-r--r-- 533 bytes
ackvec.c -rw-r--r-- 12.7 KB
ackvec.h -rw-r--r-- 4.3 KB
ccid.c -rw-r--r-- 5.9 KB
ccid.h -rw-r--r-- 7.0 KB
dccp.h -rw-r--r-- 14.9 KB
diag.c -rw-r--r-- 1.8 KB
feat.c -rw-r--r-- 15.7 KB
feat.h -rw-r--r-- 1.3 KB
input.c -rw-r--r-- 21.2 KB
ipv4.c -rw-r--r-- 27.5 KB
ipv6.c -rw-r--r-- 32.3 KB
ipv6.h -rw-r--r-- 822 bytes
minisocks.c -rw-r--r-- 9.0 KB
options.c -rw-r--r-- 16.2 KB
output.c -rw-r--r-- 17.2 KB
probe.c -rw-r--r-- 4.9 KB
proto.c -rw-r--r-- 27.5 KB
sysctl.c -rw-r--r-- 3.0 KB
timer.c -rw-r--r-- 7.8 KB
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