Your right.
When I test the LB: 600 users, with 3 httpdclient urls.
I test this to see if I get "close" to the same latency, as 2 web
servers getting 300 users each with 3 httpdclient urls.
I don't. I get 2x the latency, or the same latency as when I send 600
users with 3 urls to 1 webserver.
So I'm trying to find where the problem is.
Sent from my iPhone
On 2010-07-04, at 1:57 PM, "Sudip Kumar Bhattacharya" <[email protected]
> wrote:
If you are using a load balancer it wud normally front end on all
requests.
You wud not have to generate different urls on jmeter to reach
different servers as your mail suggests.
Having said that. Load balancers also have stickiness rules which
send consecutive requests from the same session or same ip to the
same web server for maintaining session data continuity.
You may not get an equally distributed load balancing between the
two servers.
Chen out your particular LB algorithm setting to get a better idea.
Sent on my BlackBerry® from Vodafone
-----Original Message-----
From: William Ottley <[email protected]>
Date: Sun, 4 Jul 2010 13:47:59
To: <[email protected]>
Reply-To: "JMeter Users List" <[email protected]>
Subject: simulate test as a LB, with 2 webservers at one time
Hi all,
I'm trying to solve an issue with regards to latency and Load
Balancing.
I have done several latency tests using jmeter.
I have tested each of the webservers with this:
300 threads, and 3x HHTP Request HTTPClient, each one has a
different url
location.
If I wanted to get the results of a Load Balancer, serving the 2
webservers,
would I:
a) do 600 threads, and 3x HHTP Request HTTPClient, each one has a
different
url location (for webserver 1) and 3x HTTP Request HTTPClient (for
webserver
2)
or
b) do 300 threads and 6x HTTP Request HTTPClient, done so that the
first one
is with WS1, first url, 2nd one is WS2, first url, etc....
in my head, logically, a LB, should be able to sever 600 clients,
with 3
HTTPClient requests: while having almost the same latency.. but i'm
not
getting that.
so I decided to use jmeter to simulate conecting to both webservers
at the
same time...
I hope this makes sense....
thanks!
William
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