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static file performance "staircase" pattern

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nginx-static.png 160.4 KB open | download Dennis Jacobfeuerborn 05/09/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Lucas Rolff 05/09/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Nikolaj Schomacker 05/11/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Nikolaj Schomacker 05/11/2015 Read message
postbox-contact.jpg 1.3 KB open | download Lucas Rolff 05/11/2015 Read message
postbox-contact.jpg 1.4 KB open | download Lucas Rolff 05/11/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Lucas Rolff 05/11/2015 Read message
postbox-contact.jpg 1.4 KB open | download Nikolaj Schomacker 05/11/2015 Read message
postbox-contact.jpg 1.3 KB open | download Nikolaj Schomacker 05/11/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Nikolaj Schomacker 05/11/2015 Read message
postbox-contact.jpg 1.3 KB open | download Nikolaj Schomacker 05/11/2015 Read message
postbox-contact.jpg 1.4 KB open | download Nikolaj Schomacker 05/11/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download Nikolaj Schomacker 05/11/2015 Read message
postbox-contact.jpg 1.4 KB open | download B.R. 05/11/2015 Read message
postbox-contact.jpg 1.3 KB open | download B.R. 05/11/2015 Read message
compose-unknown-contact.jpg 770 bytes open | download B.R. 05/11/2015 Read message
Dennis Jacobfeuerborn
May 09, 2015 01:40PM
Hi,
I'm trying to find out how to effectively deliver pages with lots of
images on a page. Attached you see opening a static html page that
contains lots of img tags pointing to static images. Please also note
that all images are cached in the browser (hence the 304 response) so no
actual data needs to be downloaded.
All of this is happening on a CentOS 7 system using nginx 1.6.

The question I have is why is it that the responses get increasingly
longer? There is nothing else happening on that server and I also tried
various optimizations like keepalive, multi_accept, epoll,
open_file_cache, etc. but nothing seems to get rid of that "staircase"
pattern in the image.

Does anybody have an idea what the cause is for this behavior and how to
improve it?

Regards,
Dennis
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Attachments:
open | download - nginx-static.png (160.4 KB)
Subject Author Posted

static file performance "staircase" pattern Attachments

Dennis Jacobfeuerborn May 09, 2015 01:40PM

Re: static file performance "staircase" pattern

Paul Smith May 09, 2015 02:06PM

Re: static file performance "staircase" pattern Attachments

Lucas Rolff May 09, 2015 02:26PM

Re: static file performance "staircase" pattern Attachments

Nikolaj Schomacker May 11, 2015 02:52AM

Re: static file performance "staircase" pattern Attachments

Lucas Rolff May 11, 2015 03:42AM

Re: static file performance "staircase" pattern Attachments

Nikolaj Schomacker May 11, 2015 05:00AM

Re: static file performance "staircase" pattern Attachments

B.R. May 11, 2015 06:48AM



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