[rrd-users] rrdtool update problem

[Leonardo dos Santos Goldim]

hy all

i'm trying to update my rrdtool file but i receive the follow error:

ERROR: conversion of '1825K' to float not complete: tail 'K'

i'm getting the data from iptables rules:

    0     0                     tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:5900
125K 7257K            tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:3389
    0     0                    tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:3306
20740 3970K           tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:143
234K   27M            tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:139
    0     0                   tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:110
1514  247K            tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:3128
    0     0                   tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:53
  193 12069             tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:25
33572 1827K          tcp  --  *      *       0.0.0.0/0
0.0.0.0/0           tcp dpt:22
    0     0                  tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:21
    0     0                  tcp  --  *      *
0.0.0.0/0            0.0.0.0/0           tcp dpt:20

this error doesn't appear all the time and my scripts are in the cron to
update data:

*/1 * * * * /root/teste/rrdtool/scripts/update.pl 2>>
/var/log/rrdtool-update
5 * * * * /root/teste/rrdtool/scripts/graph.pl >> /var/log/rrdtool

somebody know how to resolve this problem ?

thanks and sorry by the bad english, i'm learning yet.
Leonardo Goldim

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