DNS Help

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NETCRAMMER

Are there any DNS utilities that would allow me to
continuously make DNS request to test server performance?

thx in adv.
NET
 
In
NETCRAMMER said:
Are there any DNS utilities that would allow me to
continuously make DNS request to test server performance?

thx in adv.
NET
Click to expand...

You may have to come up with a script or batch file to do this and then
watch it with Perfmon. Another suggestion is Quest's Spotlight on Windows,
which gives you a GUI view of all services. Pricey, but this baby ROCKS!

Here's some other links....
How to Measure the Performance of a Caching DNS Server:
http://www.nominum.com/content/documents/CNS_WP.pdf

Nameserver Performance Testing - SunSparc 2.4 [1996]:
http://www.ccd.bnl.gov/nss/nameserver/

Windows NT Traffic Generation Project pdf:
http://www.mit.edu/afs/athena.mit.edu/user/j/e/jesrab/www/Thesis.pdf

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
I updated NetDig to 2.0rc4 to allow just that.
Can do things like "netdig www.yahoo.com -c 50 -t 3"
This will try to resolve www.yahoo.com. 50 times on each of three threads
(or a total of 15 queries.) to the same server. This does not give you perf
numbers in respect the server, but you can use this to gen load from
client(s) and then PerfMon the server. Can start up-to 1000 threads and
int32.MaxValue queries per thread for each instance of NetDig. You can
start as many instances as memory will allow. You will probably drain any
one client before you stress the server, so you will need multiple clients.
Anyway, hope this can find some use for folks. Grab it at www.mvptools.com.
Please let me know of any issues. Cheers!
 
In
William Stacey said:
I updated NetDig to 2.0rc4 to allow just that.
Can do things like "netdig www.yahoo.com -c 50 -t 3"
This will try to resolve www.yahoo.com. 50 times on each of three
threads (or a total of 15 queries.) to the same server. This does
not give you perf numbers in respect the server, but you can use this
to gen load from client(s) and then PerfMon the server. Can start
up-to 1000 threads and int32.MaxValue queries per thread for each
instance of NetDig. You can start as many instances as memory will
allow. You will probably drain any one client before you stress the
server, so you will need multiple clients. Anyway, hope this can find
some use for folks. Grab it at www.mvptools.com. Please let me know
of any issues. Cheers!
Click to expand...


You know, I meant to say to use nslookup, DIG or especially NetDig in the
batch/script, but left it out. And I just responded to another post
recommending NetDig? .... The mind is the last thing to go....

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
In
William Stacey said:
:-) no problem. You da man.
Click to expand...

:-)


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
Are there any utilities like this for DHCP/WINS/DNS tests? I need to create
a load on the DHCP/WINS/DNS servers.

Thx. in adv.
 
NetDig is great. But I definately need something for DHCP. anything would
help.

Thx.in Adv.
 
NetDig is for DNS. Is it not working for you? Don't know about WIN or DHCP
load. Not sure I would bother with WINs load. Could write something for
DHCP.
 
In
NETCRAMMER said:
NetDig is great. But I definately need something for DHCP. anything
would help.

Thx.in Adv.
Click to expand...

not sure if there's anything out there for DHCP to test it, other than the
Perfmon objects that are included when you install DHCP. I guess you can
probably create some sort of script to hammer DHCP for IP renewals/leases
and just watch the objects. Actually, MS DHCP can handle thousands and
thousands of users. I know of a couple local companies with 3000-4000 seats
or more, one company with 8000 seats, all using it with no problems.

You can also check out Quest software's Spotlight on Windows. Cool GUI that
'shows' you in real time how all the services are acting. Almost resembles a
video game (Ms Pacman!!!). But realistically, it's kind of pricey, but very
very useful. One major company with a local presence in my area (with over
100,000 seats) uses this tool for most of there servers.


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
I would write one, but I don't see much need at this point. Are you trying
to size your servers. How many DHCP users are you talking about?
 
User count is between 4000-5000. Basically we have to justify the need to
upgrade (replace) our present DHCP servers (very old compaqs) we're
upgrading to 2003 server. We need to present the performance diffirence
between the two.
 
In
NETCRAMMER said:
User count is between 4000-5000. Basically we have to justify the
need to upgrade (replace) our present DHCP servers (very old
compaqs) we're upgrading to 2003 server. We need to present the
performance diffirence between the two.
Click to expand...

I think it comes down to a Windows performance issue rather than a specific
service issue. Have you ever created a perfmon baseline in the past (of CPU,
Memory, Physical Disk, and Network Objects, and can also include DHCP
objects, etc)?

If you have, you can create another log and compare them and visually see
the performance degradation.

Hopefully William has a better solution for you...


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
The DHCP overhead is almost not worth counting unless your lease duration is
1 day and everyone will get a new lease when they boot. Say you had one
DHCP server for every 1000 users with a 8 day lease. On a big day, you may
get 100 people with lease expire. I just don't see the traffic. If you
want new servers, I don't think selling it based soley on DHCP is going to
help much. Like any car, you need to change the tires every 30,000 miles or
end up with more issues then saving the $400 bucks for new ones. Maybe
someone has a better answer for ya. Good luck with your project, sounds
fun. Cheers!
 
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