Re: get interfaces OID takes a second

Thank you Dave for your reply.

I found why snmpwalk on 'interfaces' so slow in linux.
Maybe many users already know it !

agent/mibgroup/mibII/interfaces.c

Interface_Scan_Init() has some code to disallow reloading interfaces

    gettimeofday ( &et, ( struct timezone * ) 0 );  /*  get time-of-day */
    if ( et.tv_sec < LastLoad + MINLOADFREQ ) {     /*  only reload so often */
      ifnetaddr = ifnetaddr_list;                   /*  initialize pointer */
      return;
    }
    LastLoad = et.tv_sec;

MINLOADFREQ  is 0 by default.

so i've set 
#define MINLOADFREQ  5

and result is nice snmpwalk !

I think this tip may give some help to (net-snmp) newbie like me.

thanks


Sangsu Baek








----- Original Message ----- 
From: "Sangsu Baek" <[email protected]>
To: "uclinux-dev" <[email protected]>; <[email protected]>
Sent: Friday, November 24, 2006 3:05 PM
Subject: get interfaces OID takes a second


> [I'm sorry, This mail was cross posted]
> 
> Hi.   I'm using net-snmp 5.2.1 on IXP425 ( kernel ver 2.6.12-uc0 ). 
> snmp agent works good. but when i get information on 'interfaces' , 
> it works but very slow response ( about 1 sec per each OID) or even timeout.
> Other mib OID ( system, ip, tcp, udp )  works great .
> Below is my snmpd.conf
> 
> thanks
> 
> 2006.11.24
> Sangsu Baek
> 
> 
> 
> snmpd.conf
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> com2sec rwAccess  default         private
> com2sec roAccess  default         public
> 
> group rwGroup   v1         rwAccess
> group rwGroup   v2c        rwAccess
> group rwGroup   usm        rwAccess
> group roGroup   v1         roAccess
> group roGroup   v2c        roAccess
> group roGroup   usm        roAccess
> 
> view all    included  .1                               80
> 
> access roGroup   ""      any       noauth    exact  all    none   none
> access rwGroup   ""      any       noauth    exact  all    all    none
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> //
> 
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