simulating modem/etc. latencies

[Dean Gaudet <dg...@arctic.org>]

is anyone doing any benchmarking/testing with simulated latencies in the
clients?

i was just studying the freebsd dummynet man page and it seems to me like
you could configure a few client boxes with a bunch of simulated
latencies/bandwidths and do much better exercising of a web server (or
other server) than the usual high-speed/low-latency tests.  has anyone
tried this?

any other similar tools folks know of?

ideally i'd like to be able to simulate 1000+ 33.6k modem users.

Dean

Re: simulating modem/etc. latencies

[Jim Winstead <ji...@trainedmonkey.com>]

I know Dan Kegel (dank@alumni.caltech.edu) was working on such a
thing.

(I wish we had test environment like that. That can be our production
environment at times (stupid mp3 and warez kiddiez), and it is not
fun to debug those problems.)

Jim

On Jan 26, Dean Gaudet wrote:
> is anyone doing any benchmarking/testing with simulated latencies in the
> clients?
> 
> i was just studying the freebsd dummynet man page and it seems to me like
> you could configure a few client boxes with a bunch of simulated
> latencies/bandwidths and do much better exercising of a web server (or
> other server) than the usual high-speed/low-latency tests.  has anyone
> tried this?
> 
> any other similar tools folks know of?
> 
> ideally i'd like to be able to simulate 1000+ 33.6k modem users.
> 
> Dean

Re: simulating modem/etc. latencies

[Jeff Johnson <je...@websitefactory.net>]

Check out http_load from acme.com.  It may do what you need.

On Wed, Jan 26, 2000 at 09:52:00PM -0800, Dean Gaudet wrote:
> is anyone doing any benchmarking/testing with simulated latencies in the
> clients?
> 
> i was just studying the freebsd dummynet man page and it seems to me like
> you could configure a few client boxes with a bunch of simulated
> latencies/bandwidths and do much better exercising of a web server (or
> other server) than the usual high-speed/low-latency tests.  has anyone
> tried this?
> 
> any other similar tools folks know of?
> 
> ideally i'd like to be able to simulate 1000+ 33.6k modem users.
> 
> Dean
> 
> 
> 

-- 
Jeffrey H. Johnson - jeff@websitefactory.net - System Administration - TrN
Barnet Worldwide Enterprises - The Website Factory - www.websitefactory.net