[mrtg] Re: runasDaemon

[Neil Calvert]

-----Original Message-----
From: Sergei Y. Ilyin <ilin at ic.vrn.ru>
To: Neil Calvert <ncalvert at cabletron.com>
Cc: mrtglist <mrtg at list.ee.ethz.ch>
Date: Friday, January 21, 2000 4:59 AM
Subject: Re: [mrtg] Re: runasDaemon
>>
>nohup mrtg mtrg.cfg 1>E1 2>E2 &
>In file E2 you can see any errors, but...
>When mrtg runs with key RunAsDaemon, it captures memory more and more,
>until FreeBSD will be down. It's very sad.
>Has anybody got this problem?
>
>Sergei Ilyin.
>
>

Well, I don't know about that, but I did this : before I implemented
runasdaemon, I ran a quick vmstat 1 10 and captured it to a file.

Then I changed about half of my MRTG logs to run as daemon mode. After a
day, I have ran vmstat again.

>From the results, my CPU is working harder now than it did before - not
what I would have expected. (It's not working MUCH harder.. but a
little. And this is the only change I applied to the machine for the 24
hour period).

Also, I have noted the same failure others have noted to update
week/month/year graphs - after letting it run for a day, only daily
graphs are continually updated.

>From my brief findings I do think RunAsDaemon needs to be examined
thoroughly. I may be mistaken, but from where I'm sitting it's slightly
buggy, and decreases performance.

Neil


VMSTAT before RunAsDaemon :

[mrtguser at noclin mrtg-2.8.8]$ more vmstat.file
   procs                      memory    swap          io     system
cpu
 r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us
sy  id
 5  0  0   7936   2920  19144  40024   0   0     8    12   11     8  18
7  10
 3  0  0   7936   2828  19308  40012   0   0    74     0  152   338  67
33   0
 3  0  0   7936   3028  19188  39880   0   0   136     0  155   419  66
34   0
 5  0  0   7936   2888  19260  39900   0   0   199     0  155   283  75
25   0
 4  0  0   7936   2524  19408  39900   0   0   201     0  174   663  75
25   0
 3  0  0   7936   3260  19172  39720   0   0   137   500  194   188  68
32   0
 3  0  0   7936   3092  19280  39700   0   0    72     0  138   652  72
28   0
 3  0  0   7936   2844  19508  39792   0   0   203   500  152   258  77
23   0
 5  0  0   7936   3160  19340  39644   0   0    81     0  209   345  59
41   0
 3  0  0   7936   5812  19296  39400   0   0   196     0  163   138  74
26   0


Vmstat AFTER RunAsDaemon :

[mrtguser at noclin mrtg-2.8.8]$ vmstat 1 10
   procs                      memory    swap          io     system
cpu
 r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us
sy  id
 4  0  0   7936   3744  10224  33128   0   0    11    15   16    17   0
8  10
 5  0  0   7936   3088  10312  33192   0   0    73     0  142   301  68
32   0
 4  0  0   7936   3012  10132  33092   0   0   104     0  139   358  76
24   0
 5  0  0   7936   2460  10304  33196   0   0   122     0  149   417  81
19   0
 4  0  0   7936   3864  10368  33236   0   0    55     0  145   116  76
24   0
 5  0  0   7936   4672  10468  33288   0   0    69     0  156   331  84
16   0
 6  0  0   7936   3300  10476  33296   0   0    16     0  144    60  75
25   0
 6  0  0   7936   2420  10468  33356   0   0   115   596  225   320  78
22   0
 4  0  0   7936   3268   9992  33128   0   0     9   413  192   137  71
29   0
 6  0  0   7936   4216  10076  33364   0   0   244     0  159   270  65
35   0

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