High latency

My site is also very slow after the recent update. Please fix it!

Hi,

Switch to Twenty Seventeen and deactivate all plugins except Polylang. Is the site slow?

I don’t want to switch to Twenty Seventeen I like Twenty Sixteen.
Fix your bug

@emilangelov I do not undestand your way of communication.
You use a plugin for free. You think you report a bug. But you don’t want to help the author to find the reason?
If you have problems with latency, you should check first if there is any problem on your site (in combination with other plugins, for example).
For example, I use Polylang and Polylang Pro on several websites and have no problems after the update.
If you don’t want to support the author fixing a mysterious bug, you can not expect to get support from his side.

There is no problem on my site, the latency happened after the update of this plugin!!! When I deactivate polylang everything loads normally and fast.

If you know everything, why do you ask other people for help?
Are you the developer, now? Do you know how WordPress and the plugins are working internal?
You’ve asked the developer for support. And he asked you to help him.
As I said: If you don’t want to help the author and answer his question, why should he support you?

Hello guys,
Thanks @chouby for your answer.

I tried to do what you asked and I discovered that there should be a problem with Polylang and the last version of woocommerce.
I tried these things:

– Using my current theme, deactivate all plugins excepts Polylang -> It works well

– Using my current theme, deactivate all plugins excepts Polylang and Woocommerce -> It takes an age to load the content (15 – 20 seconds)

– Using Twenty Seventeen, deactivate all plugins excepts Polylang -> It works well

– Using Twenty Seventeen, deactivate all pluginsexcepts Polylang and Woocommerce -> It takes an age to load the content (15 – 20 seconds)

So I tried to activate with both Twenty Seventeen and my current theme only Woocommerce and it started again to work well.

At this point, maybe there is a conflict between Woocommerce and Polylang.

What do you think about it?

It’s strange because we test Polylang + WooCommerce everyday and we never noticed any slowness.

Does this occur on every pages? Or only some specific pages?

Did you make the test wiith only WooCommerce + Polylang and no other plugins? I suppose thatt you are using another plugin to make Polylang and WooCommerce work together. Did you deactivate this plugin too?

Could you install the plugin Query Monitor and check if you detect a very long database query?

Hi guys!

The same problem. The same symptoms as @ale91. The problem is in the compatibility of Woocommerce 3.12 and Polylang 2.2.

I confirm that if Woocommerce 3.12 and Polylang 2.2 work together, the pages load very long. Defined that the problem disappears if:
1. Disable only Woocommerce.
2. Disable only Polylang.

In order to confirm the problem of compatibility versions did the following:
Removed Polylang 2.2, installed Polylang 2.1.1 the problem solved and the site again works quickly. (In this case, by “solved” I mean a temporary solution to the problem).

hi.
i have exact the same problem @petrowsa you wrote it perfectly. The problem is i dont have any older version of polylang that i can try your solution. Hope there will be fix for this problem soon.
T

Same here, running Customizr 4.0.5, TTFB has gone from about 800ms to 20 seconds when disabling Polylang the problem disappears.

• This reply was modified 7 years, 2 months ago by roderpanzahorse.

Adding other replies just to complain about this issue doesn’t help anyone. The topic has been open one week ago but nobody answers to the questions I ask, so there is no progress and there won’t be as long as I am not able to reproduce.

1. Identify the conflicting plugin
2. Once the plugin is identified, identify the conflicting configuration (especially if it is WooCommerce as we test WooCommerce all days and never had this issue, neither during the development, nor since the issue has been reported).
3. Look a this: https://www.ads-software.com/support/topic/high-latency/#post-9438980

Does this occur on every pages? Or only some specific pages?
Yes on every pages.

Did you make the test wiith only WooCommerce + Polylang and no other plugins? I suppose thatt you are using another plugin to make Polylang and WooCommerce work together. Did you deactivate this plugin too?
Yes i have tried with only Woocomerce ( 3.1.2 ) + Polylang (2.2 ) and no other plugin

Could you install the plugin Query Monitor and check if you detect a very long database query?
Yes i have installed the plugin.
Results:
polylang + woocommerce – / 10,07s / 22646kb / 0,0276s / 51Q
polylang – / 0,43s / 12495kb / 0.0147s / 41 Q
woocomerce – / 0,54s / 17577ks / 0,0544s / 41 Q

i have also tried twentyseventeen theme similar results on every page.

@andrejholly Thanks a lot. Your results show that this is not a database query issue. Let’s try something else.

Could you install this plugin: https://www.ads-software.com/plugins/theme-plugin-profiler/ Don’t do that in a production environment as this will output a big and ugly table of functions and times.

Switch to Twenty Sixteen ( as there is a display issue with Twenty Seventeen ).
In the plugin settings, check the “execute plugin” option and choose “total time” for order.

Visit one page on front, scroll down at the end of the table and please report here the lines with total execution time > 0.5s.

Also could you please report the PHP version please?