How can I compare the latency of searching over a entire network against LDAP

Currently the existing application that I work in my day job has Windows Authentication where they use LDAP. LDAP path is formed using

LDAPPath = "LDAP://dc=xyz,dc=xyz,dc=xyz,dc=xyz"
FullCommand = 开发者_JAVA百科"Select ADsPath from '" & LDAPPath & "' where sAMAccountName='abcd'"

Instead of this I want to use getobject("WinNT://" & userid). I would like to know how can I check if by using this method I would have to suffer latency in my program. Using WinNT would make it domain agnostic, but do we have performance penalty is what I need to look at. After performing getobject() I iterate through all the groups and check if the group I need is present or not.

After performing getobject() I iterate through all the groups and check if the group I need is present or not.

Why? Why not just execute an LDAP search for the group you are looking for? This is far more efficient as it executes at the server and doesn't require shipping on average N/2 groups over the wire.