Dear Roman,
Thanks for your valuable response. So ,is that means, If we optimize the parameter of the keep-alive to avoid keep-alive connection ? then we can avoid this kind of performance issue ? Or if the mirror subrequest is slow than original subrequest, then we can't avoid this kind of performance issue ? Thanks in advance. -- Regards, Yuan Man Trouble is a Friend. At 2017-10-26 20:22:13, "Roman Arutyunyan" <a...@nginx.com> wrote: >Hi, > >On Thu, Oct 26, 2017 at 03:15:02PM +0800, 安格 wrote: >> Dear All, >> >> >> I have faced a issue with Nginx "ngx_http_mirror_module" mirror function. >> want to discuss with you about this. >> >> >> The situation is like below: >> While I try to copy the request form original to mirror side, if the >> original application can process 600 request per seconds, but the mirror >> environment can only process 100 requests per seconds. Normally, even the >> mirror environment can't process all the request in time. it's should not >> impact the nginx forward the request to the original environment. But we >> observed if the mirror environment can't process all the request, then the >> Nginx will fall in issue , and original environment can't feedback process >> result to client in time. Then from client side, it seems the Nginx is down. >> If you have faced same issue before ? any suggestion ? > >A mirror request is executed in parallel with the main request and does not >directly affect the main request execution time. However, if you send another >request on the same client connection, it will not be processed until the >previous request and all its subrequest (including mirror subrequests) finish. >So if you use keep-alive client connections and your mirror subrequests are >slow, you may experience some performance issues. > >-- >Roman Arutyunyan >_______________________________________________ >nginx mailing list >nginx@nginx.org >http://mailman.nginx.org/mailman/listinfo/nginx
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