Messages in this thread | | | Date | Wed, 04 May 2011 15:03:13 -0400 | From | TB <> | Subject | Re: Divide error in bictcp_cong_avoid ? |
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On 11-05-04 02:35 PM, Randy Dunlap wrote: > On Wed, 4 May 2011 11:33:51 -0700 Stephen Hemminger wrote: > >> On Wed, 4 May 2011 10:49:40 -0700 >> Randy Dunlap<rdunlap@xenotime.net> wrote: >> >>> [add cc to netdev] >>> >>> >>> On Wed, 04 May 2011 12:03:31 -0400 TB wrote: >>> >>>> We're having this issue sporadically on a few servers and this is the >>>> backtrace we get from netconsole. >>>> >>>> >>>> [28522.642419] divide error: 0000 [#1] SMP >>>> [28522.642457] last sysfs file: >>>> /sys/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/vendor >>>> [28522.642504] CPU 0 >>>> [28522.642511] Modules linked in: >>>> i2c_i801 >>>> i2c_core >>>> evdev >>>> button >>>> [28522.642570] >>>> [28522.642590] Pid: 0, comm: swapper Not tainted 2.6.38.5 #6<<<<<<<<<<<<<< >>>> >>>> Supermicro X8DTH-i/6/iF/6F >>>> / >>>> X8DTH >>>> >> >> What kernel version? I suspect they are running something really old >> kernel like RHEL 5 since BIC has not been the default congestion control for >> several years. > > Please see about 6 lines above.... at the "<<<<<<<<<<<".
/proc/sys/net/ipv4/tcp_available_congestion_control cubic reno
cat /proc/sys/net/ipv4/tcp_congestion_control cubic
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