32.5M dhcpd.conf with 108000 classes is parsed for 40 minutes. Is this ok?

[Randall C Grimshaw]

It is not normal to parse a config file for such a long time. I am wondering if you cannot accomplish the same objective with your config by stripping the classes down to one statement to establish membership and leave the ip assignment to the multiple restrictive pool statements you have already generated. Just a thought.

Randy

-----Original Message-----
From: dhcp-users-bounces at lists.isc.org [mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of michael kapelko
Sent: Friday, May 15, 2009 1:06 AM
To: dhcp-users at isc.org
Subject: 32.5M dhcpd.conf with 108000 classes is parsed for 40 minutes. Is this ok?

Hi.
I have generated dhcpd.conf from DB with real classes (~38000) and
faked ones (~70000, to test for user count growth) resulting in a
config with ~108000 classes.
It looks like this:

ddns-update-style none;
min-lease-time 120;
default-lease-time 150;
max-lease-time 180;
local-address 10.102.101.13;
subnet 0.0.0.0 netmask 0.0.0.0 {

- - - - many lines - - - -

class "10.102.100.100:1" {
	match if (binary-to-ascii(10, 8, "", suffix(option agent.circuit-id,
1)) = "1") and
	         (binary-to-ascii(10, 8, ".", packet(24, 4)) = "10.102.100.100");
}
pool {
	range 10.102.100.177;
	option routers 10.102.100.1;
	option subnet-mask 255.255.255.0;
	allow members of "10.102.100.100:1";
}

class "10.102.100.100:2" {
	match if (binary-to-ascii(10, 8, "", suffix(option agent.circuit-id,
1)) = "2") and
	         (binary-to-ascii(10, 8, ".", packet(24, 4)) = "10.102.100.100");
}
pool {
	range 10.102.100.162;
	option routers 10.102.100.1;
	option subnet-mask 255.255.255.0;
	allow members of "10.102.100.100:2";
}

class "10.102.100.100:3" {
	match if (binary-to-ascii(10, 8, "", suffix(option agent.circuit-id,
1)) = "3") and
	         (binary-to-ascii(10, 8, ".", packet(24, 4)) = "10.102.100.100");
}
pool {
	range 10.102.100.14;
	option routers 10.102.100.1;
	option subnet-mask 255.255.255.0;
	allow members of "10.102.100.100:3";
}

class "10.102.100.100:4" {
	match if (binary-to-ascii(10, 8, "", suffix(option agent.circuit-id,
1)) = "4") and
	         (binary-to-ascii(10, 8, ".", packet(24, 4)) = "10.102.100.100");
}
pool {
	range 10.102.100.193;
	option routers 10.102.100.1;
	option subnet-mask 255.255.255.0;
	allow members of "10.102.100.100:4";
}

class "10.102.100.100:48" {
    match if (binary-to-ascii(10, 8, "", suffix(option
agent.circuit-id, 1)) = "48") and
             (binary-to-ascii(10, 8, ".", packet(24, 4)) = "10.102.100.100");
}
pool {
    range 10.102.100.124;
    range 10.102.100.125;
    option routers 10.102.150.1;
    option subnet-mask 255.255.255.0;
    allow members of "10.102.100.100:48";
}

- - - - many lines - - - -

}

Class matches a rule when a DHCP message has giaddr field setup and
Relay agent info option present. We want to use it for a network of
D-Link's.
The compressed dhcpd.conf can be downloaded from here [750K]:
http://kornerr.alfamoon.com/download/dhcpd.conf.bz2
I wonder if it's normal for such a config to be parsed for such a long
time on [Core2Duo 1.8GHz / CentOS 5 Final / DHCP Server V3.0.5-RedHat]
Thanks.
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