Re: cflowd dieing randomly

From: Blake Caldwell (blake@ucar.edu)
Date: Mon Feb 12 2001 - 17:09:15 PST

  • Next message: Brett L. Hawn: "RE: cflowd dieing randomly"

    Oops. I meant to send this to the list.

    Blake Caldwell wrote:

    > I used to have the same problem. A while back I increased my packet
    > buffer size to 16MB. A recent denial of service attack though casued
    > the router to export many more flows than I am used to collecting and
    > cflowd crashed. Now I have it set to 32 MB. I hope this is big enough
    > ;)
    >
    > -Blake
    >
    > "Nunes, Steve" wrote:
    >
    > >
    > >
    > > Brett,
    > >
    > > Some people have been reporting this since the fixes in 2.1-b1. See
    > > the archive...
    > >
    > > http://www.caida.org/archives/cflowd/0154.html
    > >
    > >
    > > Steve Nunes
    > > CoreExpress Inc.
    > > E-mail: steve.nunes@coreexpress.net
    > >
    > > -----Original Message-----
    > > From: Brett L. Hawn [mailto:brett.hawn@rcn.com]
    > > Sent: Saturday, February 10, 2001 9:12 PM
    > > To: cflowd@caida.org
    > > Subject: cflowd dieing randomly
    > >
    > > I'm running a semi-production/semi-test version of cflowd on a
    > > Netra360 w/
    > > 512mb ram, 1gig swap, and tons of drive space. Was working fine when I
    > > was
    > > only exporting about 3 routers worth of data, kicked it up to 5 and it
    > > now
    > > its going to hell. After a reboot cflowd will run for about 30 minutes
    > > or so
    > > then I get spammed with the following in my syslog (and cflowd cores
    > > out):
    > >
    > > Feb 10 22:58:54 flowscan.nms.rcn.net cflowd[184]: [E]
    > > semop(0,0xefe34b80,1)
    > > failed to release buffer lock: Resource temporarily unavailable
    > > {CflowdPacketQueue.cc:438}
    > >
    > > I've done all the necessary steps like setting my shmem size, etc.
    > > Anyone
    > > got an idea what might be causing this?
    > >
    > > --
    > > cflowd mailing list
    > > cflowd@caida.org

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