Slow, basic, Plone 5.2.6 site with Python 3.6,

1

I have a simple project (that got delayed due to Covid, so) it runs on Python3.6.2.

I set up a 'test site' (just for my customer) behind Apache and turned on Caching in Plone (without Proxy), but the site seem MUCH slower than similar 'things' I have done on Python 2.7 (with the same setup, just apache in front). The site will just have a few (test) users, but I need to avoid it 'sleeping' (so the customer can test it before 'finishing the project')

Any suggestions? ( the site is here: http://portal.flaktveitik.no )

Plone 5.2.6 (5214)
CMF 2.5.4
Zope 4.6.3
Python 3.6.2 (default, Jul 17 2017, 23:14:31) [GCC 5.4.0 20160609]
PIL 6.2.2 (Pillow)
WSGI: On
Server: waitress 1.4.4
2

I can see some calls to //None (eg /forside/bestill/copy_of_keeper_voksen_rod/None). Seems fast, caching is ok. Sometimes collectionfilter query takes like 1.5 secs. Also the 301 not modified gets a lot (more than 400ms). theme js and css are not minified.

the view itself is very fast (about 40ms).

  • try to enable http2 on apache
  • remove all the 404 on the page
  • debug mode is slow, does it change using production mode?
3

It is not in debug mode.

It looks to me that it gets slow after 'inactivity', could it be that Waitres 'goes to sleep'. Maybe it would be enough to just have a cron job that visits the site?

Is there some tool (or website, like uptime robot) that can check a site regulary and send notice if 'response is slow' ? Maybe just change the timeout settings?

(this is the message I got from my customer (translated): 'The site responds very slowly periodically. This can quickly become an irritation. Can you do something about it?')

4

You could use curl (in a cron job) to measure http(s) response times like:

curl -o /dev/null -s --write-out '%{time_total}' "https://demo.plone.org/en"

And if the result is too slow do whatever you need.

For finer granularity you could use other time variables like time_namelookup, time_connect, time_appconnect, time_pretransfer, time_redirect, or time_starttransfer.

5

Thanks a lot

I added a file ("@curl-format.txt) with

    time_namelookup: %{time_namelookup}\n
    time_connect: %{time_connect}\n
    time_appconnect: %{time_appconnect}\n
    time_pretransfer: %{time_pretransfer}\n
    time_redirect: %{time_redirect}\n
    time_starttransfer: %{time_starttransfer}\n
    ———\n
    time_total: %{time_total}

So now, curl -w "@curl-format.txt" -o /dev/null -s "http://mysite .no"

I get all(?) the stats similar to this

    time_namelookup: 0.005180
    time_connect: 0.048368
    time_appconnect: 0.000000
    time_pretransfer: 0.048424
    time_redirect: 0.000000
    time_starttransfer: 0.103415
    ———
    time_total: 0.147025