Plugin Support
qtwrk
(@qtwrk)
Hi,
Do you have any kind of lazy load feature ?
Because if I bypass cache plugin , it behaves in same way.
Best regards,
I don’t think there is any lazy loading plugin on the site, but I can’t say for 100% certain, because this is a client’s site. I will find out, though. It’s unclear to me how a lazy load plugin would cause LS cache to send images to the browser slowly though.
I am also experiencing really slow image loading when I turn on the Lazy loading option. The gray placeholder stays for almost 1-2 sec.
That isn’t my issue. We DO NOT have the lazy loading option enabled in the plugin. And yet the images load one at a time, veeery slowly, and only on the first page load. It’s almost like the page is waiting for the server to generate the image on the fly or something, it’s very odd.
Plugin Support
qtwrk
(@qtwrk)
Hi,
Did you enable Low Quality Image Preview feature ?
And also , please try export your current setting , then reset to default, purge all , and see how it goes.
Best regards,
No, the low quality image preview feature is not enabled.
I just went through and changed one setting at a time (From the default configuration) and finally stumbled upon the issue. Whenever I enable ESI, the images load one at a time, extremely slowly. As soon as I disable ESI, the page loads instantly.
Plugin Support
qtwrk
(@qtwrk)
Hi,
That makes sense now.
If ESI treats each individual images as one block , it does one PHP request , and when you have a lot of images , it takes a lot of requests to make it.
Best regards,
Is there somewhere I can read more about how ESI works? Is it possible to treat some content as shared between users? Obviously, in the case of product thumbnail images, everyone is going to be seeing the same thing and it doesn’t need to be cached per user…
Plugin Support
qtwrk
(@qtwrk)
Hi,
About ESI, please this wiki
this may give you some idea how ESI works.
Actually I was thinking this ESI block may not be added by LSCWP itself , but by 3rd party plugin with our API
Could you please go to admin area , left-side bar —> LiteSpeed Cache —> Toolbox —> [6] Debug Settings
in this page:
set Debug Log to Admin IP Only
add your IP into Admin IPs (you will see your IP below.)
set Debug Level to Advanced
save changes.
Now go to [7] Log View, click on admin-bar LiteSpeed Cache —> Purge All
then click button [D] Clear Log , keep this window open, don’t close it nor navigate away from it.
Now ,open a new window, access your home page.
once page is loaded , go back to Log View window and refresh this page, you should see the debug log is showing up.
Then please copy all the text , paste it into https://paste.ubuntu.com/
then post the link it generated for you.
Best regards,
With ESI enabled, here is the advanced debug log for one request of a catalog page (Which is where we notice the issue the most, due to the number of images on it)
https://hoopmama.com/tmp/2020-05-05-lscache-debug.txt
Plugin Support
qtwrk
(@qtwrk)
Hi,
Yes, in log , you will see dozens of
Query String: lsesi=yith_wcwl_add&_control=private%2Cno-vary&esi=eyJ5aXRo
each of them means one ESI request, there are a lot of them , so it slows down a lot.
Please keep the ESI off for the time being , I will report this issue to our developers for further analysis
Best regards,
Did this get fixed as I’m also using ESI and struggling with slow page load times.
Any updates on this problem? I am having the same issue with ESI
