Limiting TCP connections
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adrian...@hushmail.com
Nov 26, 2015, 7:31:52 AM11/26/15
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Hi,
I'd like to limit TCP connections and make all requests go through these.
I thought of injecting x amount of users and then looping:
There are two problems I see with this:
1) I will be unable to control the amount of requests per second without pausing/pacing and throttling
2) The console output keeps printing OK requests of 20 (atOnceUsers(10))
Is there a better way of limiting TCP connections and why do looped requests not appear in the Gatling stdout?
Many Thanks
Aidy
Stéphane LANDELLE
Nov 26, 2015, 7:36:44 AM11/26/15
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I'd like to limit TCP connections and make all requests go through these.
What's the rationale?
why do looped requests not appear in the Gatling stdout?
adrian...@hushmail.com
Nov 26, 2015, 8:09:48 AM11/26/15
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Hi Stéphane,
> caching?
Yes, I should have realised that.
>> I'd like to limit TCP connections and make all requests go through these.
> What's the rationale?
After further investigation, it seems that there are x number of clients that make API calls with a keep-alive of 45 secs.
So, I was thinking maybe I inject a new set of users every 45 seconds?
Many Thanks
Aidy
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Stéphane LANDELLE
Nov 26, 2015, 8:14:07 AM11/26/15
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After further investigation, it seems that there are x number of clients that make API calls with a keep-alive of 45 secs.
Are those clients trusted? Even though, keep-alive duration client should never be trusted and servers should quickly close connections after some idle time. IMHO, 45 secs is very (way too) long. I'd use something like 5-15 seconds.
adrian...@hushmail.com
Nov 26, 2015, 8:22:54 AM11/26/15
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Hi Stephane,
The clients are internal, but I am struggling on how to model this. It looks as though we may have a batch of requests within each keep-live session.
Aidy
After further investigation, it seems that there are x number of clients that make API calls with a keep-alive of 45 secs.Are those clients trusted? Even though, keep-alive duration client should never be trusted and servers should quickly close connections after some idle time. IMHO, 45 secs is very (way too) long. I'd use something like 5-15 seconds.
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Stéphane LANDELLE
Nov 26, 2015, 8:26:01 AM11/26/15
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So your clients are other applications, not browsers?
adrian...@hushmail.com
Nov 26, 2015, 9:04:27 AM11/26/15
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Yes, it is actually one application and X amount of instances of it.
Stéphane LANDELLE
Nov 26, 2015, 9:10:10 AM11/26/15
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adrian...@hushmail.com
Nov 26, 2015, 9:22:19 AM11/26/15
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> So you should share the connection pool.
Thanks, but wouldn't this mean all users share one connection? Would I need to write x number of similar scenarios to simulate x connections?
Stéphane LANDELLE
Nov 26, 2015, 9:29:47 AM11/26/15
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How do those applications work? Do they use one single connection each? Or do they use a connection pool too?
adrian...@hushmail.com
Nov 26, 2015, 9:33:35 AM11/26/15
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Each application instance would make a separate connection.
Stéphane LANDELLE
Nov 26, 2015, 9:38:26 AM11/26/15
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OK, so you're back with your original solution. And I don't see your points.
adrian...@hushmail.com
Nov 26, 2015, 10:21:07 AM11/26/15
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> OK, so you're back with your original solution. And I don't see your points.
Thanks Stephane,
One of the drawbacks of my original solution was that if I make x number of connections and loop, I will only be able to "control" the request rate through pace/pausing and throttling, and I wondered if there was a better way to handle this.
Stéphane LANDELLE
Nov 26, 2015, 10:21:46 AM11/26/15
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r rajitha
Dec 17, 2015, 1:23:54 PM12/17/15
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Hi
my application also having the scenario.As you mentioned can controlling the request rate by pause/throttling .
which is the best approach ? throttling or pause
my application also having the scenario.As you mentioned can controlling the request rate by pause/throttling .
which is the best approach ? throttling or pause
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adrian...@hushmail.com
Dec 17, 2015, 2:15:21 PM12/17/15
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Hi,
Could you please express your requirements a little more fully as there may be alternative ways to achieve your goal?
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