Why does a website take a long time to load over HTTPS?

A

Artem2016-05-12 10:06:32

CentOS

Artem, 2016-05-12 10:06:32

Recently received an SSL certificate for the organization's website. After installation and configuration, the site began to load up to 10-15 seconds. The site is on BitrixVM5.1 with CentOs. Setting up nginx and apache was elementary, enable ssl, specify the path to the certificate.
Wireshark during repeated testing shows the same picture: ServerHello returns exactly 10 seconds later.

How to find out in more detail where these 10 seconds go?

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4 answer(s)

F

Fixid, 2016-05-12
@loktionov_art

Increase ssl_buffer_size, set ssl_session_cache. Use ssl_ciphers and classic TCP/IP stack optimizations whenever possible

V

Vladimir Goncharov, 2020-08-27
@plumber1980

https://kolatelegraf.ru/ also the speed dropped by half after installing ssl. I checked https://www.sslshopper.com/ssl-checker.html
everything is fine, what should I do?

A

Alexey Romanenko, 2016-05-12
@slimus

Enable debug logging of nginx (if it looks outside), read logs.
Is the server powerful? What is the key length?

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Vladimir, 2016-05-12
@MechanID

It looks like something is timed out - for nginx, did you forget to add the cabundle/chain certificate file?
check the certificate chain at https://www.sslshopper.com/ssl-checker.html e.g.