amd64/146792: flowcleaner 100% cpu's core load

Nikolay Nevzorov niko at
Fri May 21 10:40:03 UTC 2010

>Number:         146792
>Category:       amd64
>Synopsis:       flowcleaner 100% cpu's core load
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 21 10:40:02 UTC 2010
>Originator:     Nikolay Nevzorov
>Release:        8-STABLE (apr 10 Arp)
FreeBSD 8.0-STABLE FreeBSD 8.0-STABLE #2: Fri May 14 01:37:04 YEKST 2010     niko at  amd64
On high-load network router since some time (1-5 days) process flowcleaner get's 100% load on a one CPU's core. 
ssh works, remote reboot can't be done, only hard reboot.

Bug was seen at many routers:
Bug can be seen only at high-load (more than 30 megabits) routers.
Without "flowtable" option in kernel's config router works fine. 


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