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comp.lang.ruby

Net::LDAP vs ruby/ldap

dacat

4/27/2007 7:08:00 PM

The basic premise of this test was to see how long it would take to do
the following:

1000 Basic lookups on a known attribute/value pair over an unencrypted
connection using anonymous bind for each library.

This post is for informational purposes, I knew the NET::LDAP lib
would be slower but I wanted to see by how much.
{if you are new to ruby, the reason it is slower is because its a TRUE
ruby implementation of the LDAP rfc. while on the other hand the ruby/
ldap lib is a C front end to the openldap library}

Bottom line is -- I just figured i would share.
Code:
----------------
require 'benchmark'
include Benchmark

LOOP_COUNT = 1000
require 'ldap'
require 'net/ldap'

HOST = 'somehost.com'
S_ATTR = 'some attribute that exists that can be lookedup'
S_VAL = 'a value for the attribute that iss valid'
TREE_BASE = 'a valid base ex. o=com'

class LdapTest

def net_ldap_test
ldap = Net::LDAP.new :host => HOST, :port => 389
filter = Net::LDAP::Filter.eq( S_ATTR, S_VAL )
ldap.search( :base =>TREE_BASE, :filter => filter ) do |entry|
a=entry.dn
end
nil
end


def ldap_test
conn = LDAP::Conn.new(HOST, LDAP::LDAP_PORT)
filter = "(#{S_ATTR}=#{S_VAL})"
conn.search(TREE_BASE, LDAP::LDAP_SCOPE_SUBTREE, filter) do |entry|
a=entry.dn
end
nil
end

ldap_test=LdapTest.new

Benchmark.bm(15) do |x|
x.report("NET::LDAP:") { for i in 1..LOOP_COUNT;
ldap_test.net_ldap_test; end }
x.report("ruby-ldap") { for i in 1..LOOP_COUNT ;
ldap_test.ldap_test; end }
end
end
===============================================================

My results.
user system total real
NET::LDAP: 7.150000 0.580000 7.730000 ( 19.494588)
ruby-ldap 0.210000 0.120000 0.330000 ( 11.853484)


ruby/ldap : http://ruby-ldap.source...
net::ldap : http://rubyforge.org/projects...

ruby --version
ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-linux]
3 Answers

Daniel Berger

4/27/2007 7:29:00 PM

0

On Apr 27, 1:07 pm, dacat <fda...@gmail.com> wrote:
> The basic premise of this test was to see how long it would take to do
> the following:
>
> 1000 Basic lookups on a known attribute/value pair over an unencrypted
> connection using anonymous bind for each library.
>
> This post is for informational purposes, I knew the NET::LDAP lib
> would be slower but I wanted to see by how much.
> {if you are new to ruby, the reason it is slower is because its a TRUE
> ruby implementation of the LDAP rfc. while on the other hand the ruby/
> ldap lib is a C front end to the openldap library}
>
> Bottom line is -- I just figured i would share.
> Code:
> ----------------
> require 'benchmark'
> include Benchmark
>
> LOOP_COUNT = 1000
> require 'ldap'
> require 'net/ldap'
>
> HOST = 'somehost.com'
> S_ATTR = 'some attribute that exists that can be lookedup'
> S_VAL = 'a value for the attribute that iss valid'
> TREE_BASE = 'a valid base ex. o=com'
>
> class LdapTest
>
> def net_ldap_test
> ldap = Net::LDAP.new :host => HOST, :port => 389
> filter = Net::LDAP::Filter.eq( S_ATTR, S_VAL )
> ldap.search( :base =>TREE_BASE, :filter => filter ) do |entry|
> a=entry.dn
> end
> nil
> end
>
> def ldap_test
> conn = LDAP::Conn.new(HOST, LDAP::LDAP_PORT)
> filter = "(#{S_ATTR}=#{S_VAL})"
> conn.search(TREE_BASE, LDAP::LDAP_SCOPE_SUBTREE, filter) do |entry|
> a=entry.dn
> end
> nil
> end
>
> ldap_test=LdapTest.new
>
> Benchmark.bm(15) do |x|
> x.report("NET::LDAP:") { for i in 1..LOOP_COUNT;
> ldap_test.net_ldap_test; end }
> x.report("ruby-ldap") { for i in 1..LOOP_COUNT ;
> ldap_test.ldap_test; end }
> end
> end
> ===============================================================
>
> My results.
> user system total real
> NET::LDAP: 7.150000 0.580000 7.730000 ( 19.494588)
> ruby-ldap 0.210000 0.120000 0.330000 ( 11.853484)
>
> ruby/ldap :http://ruby-ldap.source...
> net::ldap :http://rubyforge.org/projects...
>
> ruby --version
> ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-linux]

While it's interesting, I'm afraid I have to stick with net-ldap. The
problem with ruby-ldap is that it segfaults in conjunction with
WEBrick, as I know all too well.

Regards,

Dan

Ara.T.Howard

4/27/2007 8:16:00 PM

0

Ian Macdonald

5/18/2007 10:29:00 AM

0

On Apr 27, 10:16 pm, ara.t.how...@noaa.gov wrote:

> my good friend justin crawford works heavily with ruby and ldap for the
> universtiy of colorado managing a huge federated authentication system. they
> use the pure ruby ldap lib because the c version is unstable. he's been using
> it for several years on a system that's serving ~ 100,000 people - so i think
> it's fast enough.

I'd be interested to discover exactly what "unstable" means here, so
that I can fix the problem.

I'd also like to see code that can reproduce the segfault in
combination with WEBRick.

Thanks,

Ian