[ net-snmp-Bugs-1002655 ] ifTable fetching SLOW under Solaris

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Bugs item #1002655, was opened at 2004-08-03 07:40
Message generated for change (Comment added) made by nobody
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Category: None
Group: solaris
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: ifTable fetching SLOW under Solaris

Initial Comment:
When using Solaris 2.8 or 2.9, fetching the interface
table is too slow anytime there's more then ten
interfaces.  This seems totally related to how net-snmp
is fetching the data, and happens on every version from
ucd-snmp 4.2.3 to net-snmp 5.1.1.  I tried increasing
the interface cache from 10 interfaces to 100
interfaces.  On ucd-snmp 4.2.3, this made the initial
query for the ifTable timeout, but once the data was
cached, it flew through the entire table.  On net-snmp
5.1.1, there was a noticeable pause for each ifEntry
subtable, rather than for the entire ifTable tree.

To reproduce:
Configure more than ten interfaces on a Solaris box
(just add IPs to loopback).  Then restart snmpd and try
walking the table.

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Comment By: Nobody/Anonymous (nobody)
Date: 2004-11-28 23:17

Message:
Logged In: NO 

The problem is still current with 


NET-SNMP version:  5.2
Web:               http://www.net-snmp.org/
Email:             net...@li...


on a solaris 9 box that has 10+ interfaces

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Comment By: Nobody/Anonymous (nobody)
Date: 2004-08-03 09:06

Message:
Logged In: NO 

We may be able to do that.  The problem doesn't appear to be
with the ifTable code, per se, but with the solaris code
that manages fetching the interface data (we have the same
problems with ipAddrTable when it looks up interface-related
information).  It just seems that whatever way it's being
done, it's very slow.

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Comment By: Dave Shield (dts12)
Date: 2004-08-03 07:54

Message:
Logged In: YES 
user_id=88893

The ifTable has been completely re-implemented
in the current development tree (what will eventually
become 5.2 and above).  Would it be possible for you
to retrieve the current CVS code, and see if that
performs any better?

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