[olsr-dev] Re: cpu load?

[Wolfgang 'Dreamguard' Nagele]

hi thomas,

> * How do you measure the packet loss? Is this the packet loss detected by
> olsrd (i.e. the LQ value) or is this the packet loss detected by
> SmokePing?
we got the data from smokeping. but in fact thats a node which is hard 
wired to the server that runs smokeping. so it doesn't have to do 
anything with the wireless link and it's quality.

> * I assume that we're talking about packet loss on a single link here,
> e.g. between nodes A and B. Does olsrd report a high packet loss (i.e. LQ
> value) on both nodes involved in the link, i.e. on A and on B?
in fact it seems that this problem is handing over to other nodes in the 
network too. we had this scenario a few days ago. everything started out 
in a quite central node, and after a few hours some other nodes started 
"getting weird" too. i'm sorry that we haven't been abled to check some 
infos for reproducing this. we just restarted the central node where 
everything started and the rest of the network became calm too. strange. 
:) maybe the wireless interface of this node produces "failed" packets - 
i just remeber this of some hard wired nics.

> * Do you have to reboot the node to make the problem go away or is it
> sufficient to restart olsrd?
we just tried the reboot yet.

here is the output of top on the "problem node":
---cut---
Mem: 10272K used, 3984K free, 0K shrd, 1152K buff, 3032K cached
Load average: 0.22, 0.19, 0.18    (State: S=sleeping R=running, W=waiting)

   PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
   342 root     R        632     1 47.0  4.4 olsrd
  8593 root     R        396  8590  3.8  2.7 top
  8589 root     S        612   320  0.0  4.2 dropbear
  8590 root     S        472  8589  0.0  3.3 sh
   332 root     S        412     1  0.0  2.8 olsrd-reanimato
   320 root     S        372     1  0.0  2.6 dropbear
     1 root     S        372     0  0.0  2.6 init
   360 root     S        372     1  0.0  2.6 init
   313 root     S        356     1  0.0  2.4 httpd
    43 root     S        340     1  0.0  2.3 syslogd
    42 root     S        296     1  0.0  2.0 klogd
  8588 root     S        240   332  0.0  1.6 sleep
     3 root     SWN        0     1  0.0  0.0 ksoftirqd_CPU0
     7 root     SW         0     1  0.0  0.0 mtdblockd
     2 root     SW         0     1  0.0  0.0 keventd
    18 root     SWN        0     1  0.0  0.0 jffs2_gcd_mtd4
     4 root     SW         0     1  0.0  0.0 kswapd
     5 root     SW         0     1  0.0  0.0 bdflush
     6 root     SW         0     1  0.0  0.0 kupdated
---cut---

hope that helps.
bye.