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TLS/HTTP/2 slower than TCP/HTTP/1.1
03-09-2016, 09:16 AM
Post: #1
TLS/HTTP/2 slower than TCP/HTTP/1.1
Hi folks,

Have to say I'm a bit surprised to see when you have a site with a lot of requests HTTP/1.1 is still faster than HTTP/2 (obviously with HTTPS):

HTTP:
http://www.webpagetest.org/result/160308...1/details/

HTTP/2 (HTTPS/TLS):
http://www.webpagetest.org/result/160308...1/details/

For example take the same request for an image:
- request 25 on the first page (HTTP)
- request 19 on the second page (HTTP/2).

Almost seems like it's the overhead of encrypting the files ?

Because it's the same H2O webserver talking to Varnish with all files cached.

Is this normal / to be expected ?

I would love to get the opinion of someone else on this.

Have a good day.
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TLS/HTTP/2 slower than TCP/HTTP/1.1 - Lennie - 03-09-2016 09:16 AM

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