Nginx response rate increases with more upstream ports

Dave Cheney dave at
Tue Jun 16 10:55:12 MSD 2009

Asif Ali writes:

> « HTML content follows »
> Dear All, 
> I am trying to resolve a particular issue that is not getting solved 
> easily.
> Nginx is able to route requests but the speed of routing is slowing 
> down..when I am increasing the number of upstream ports.
> I have an app which responds in under 500ms. When I route those requests 
> through nginx to about 50 ports, nginx response rates increases to 
> 1500-2500 ms whereas the app can handle large concurrent requests and 
> there are as many as 50 ports.
> I have tried this with both fair and e-y load balancer but with similar 
> results.
> I have also tuned nginx configuration for response times, timeouts etc but 
> still I see similar results.
> Can anyone advise me if they have experienced a similar problem earlier 
> and if they have a solution for this?.
> Thanks in advance
> Asif  

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