kern/146792: [flowtable] flowcleaner 100% cpu's core load

[Kurt Jaeger]

The following reply was made to PR kern/146792; it has been noted by GNATS.

From: Kurt Jaeger <pi at opsec.eu>
To: bug-followup at FreeBSD.org, niko at gtelecom.ru
Cc:  
Subject: Re: kern/146792: [flowtable] flowcleaner 100% cpu's core load
Date: Sun, 23 May 2010 16:19:25 +0200

 Hi!
 
 I observe a similar behaviour on a 8.0-RELEASE-p2 i386 GENERIC
 kernel.
 
 System receives 2 BGP4 fullfeeds (approx. 310K routes each).
 
 The system is still running, a few processes are unkillable or
 die only after a long amount (1-2h) of time.
 
 Here's the list of unkillable processes:
 
 80871  ??  R      0:00.00 /bin/sh /etc/periodic/daily/470.status-named
 76499  ??  Rs     0:00.01 sshd: [accepted] (sshd)
 76922  ??  Rs     0:00.01 sshd: [accepted] (sshd)
 
 flowcleaner looks pretty busy (for an uptime of approx. 40h):
 
    22  ??  RL   1209:50.98 [flowcleaner]
 
  4:17PM  up 1 day, 22:22, 2 users, load averages: 7.20, 6.53, 5.81
 
 quagga is running on the system, bgpd mgmt cli is no longer reachable:
 
 # telnet 0 2605
 Trying 0.0.0.0...
 Connected to 0.
 Escape character is '^]'.
 
 ^]
 telnet> close
 Connection closed.
 # 
 
 What can I do to help to debug this ?
 No console access available right now, but can probably made available.
 
 This is a production host, but not yet super-critical, so...
 
 -- 
 pi at opsec.eu            +49 171 3101372                        10 years to go !