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Re: High response time at high concurrent connections

Yichun Zhang (agentzh)
September 29, 2013 10:26PM
Hello!

On Sun, Sep 29, 2013 at 3:50 PM, laltin wrote:
>
> I can handle ~1200 requests/seconds with 1000 concurrent connections and
> when I do the same benchmark with 100 concurrent connections I can again
> handle around 1200 requests/second but response time drops to ~80 ms.
>

What you're seeing is a very common phenomenon.

Tools like ab always try to load the target server to its extreme
throughput, i.e., the 1200 req/sec you're seeing is already the
throughput limit for that service in your server. Because you're
already at the throughput limit, you have to sacrifice response
latency for higher concurrency level otherwise you'll just have much
higher throughput which is impossible (remember you're already on the
limit? ;)).

Regards,
-agentzh

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Subject Author Posted

High response time at high concurrent connections

laltin September 29, 2013 06:50PM

Re: High response time at high concurrent connections

Yichun Zhang (agentzh) September 29, 2013 10:26PM

Re: High response time at high concurrent connections

laltin September 30, 2013 04:42AM

Re: High response time at high concurrent connections

Yichun Zhang (agentzh) September 30, 2013 11:04PM

Re: High response time at high concurrent connections

Reinis Rozitis September 30, 2013 03:34AM

Re: High response time at high concurrent connections

bryndole October 02, 2013 05:01PM

Re: High response time at high concurrent connections

laltin October 02, 2013 05:13PM

Re: High response time at high concurrent connections

bryndole October 02, 2013 05:43PM

Re: High response time at high concurrent connections

laltin October 03, 2013 09:42AM

Re: High response time at high concurrent connections

Oscar Fernandez Sierra October 02, 2013 06:26PM

Re: High response time at high concurrent connections

Yichun Zhang (agentzh) October 04, 2013 03:02PM



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