Re: cflowd memory usage

From: Blake Caldwell (
Date: Fri Feb 09 2001 - 13:29:44 PST

  • Next message: Blake Caldwell: "Re: cflowd memory usage"

       I'm experiencing the same problem. One of our machines is receiving in
    excess of 1.2 million flows per 5 minutes. Cflowd will continue to use more
    and more memory until the machine runs completely out. Sometimes it will grow
    up to 650 Mb in a single day. Because of this I am forced to restart Cflowd 3
    times a day. I know this is more data than cflowd was targeted to handle, but
    shouldn't it just keep data in memory for a short time? Could there be a
    memory leak that becomes apparent when cflowd receives an extreme amount of
    data? On another machine that only receives 300,000 flows every 5 minutes,
    the memory usage stabilizes out at about 60MB. This still is a lot, but at
    least it doesn't keep on growing. Has anyone else had this problem? I too am
    wondering why cflowd needs so much memory.


    "Miguel A.L. Paraz" wrote:

    > Hi,
    > I'm collecting from 3 routers at up to 150,000 flows per 5 minute
    > period. Why does cflowd grow to 30 MB of RAM usage? Does it keep anything
    > in memory after writing to disk?
    > I don't use cfdcollect, I just use the raw flow files.
    > All clues appreciated.
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