Automatic Smush not working

@ilovecake,

Could you please check if there are any errors in php debug log?

Best regards,
Anton

hi @vanyukov ,
I added the following to check for log outputs:

define( ‘WP_DEBUG’, true );
define( ‘WP_DEBUG_LOG’, true );

But see no errors when i upload a new image.

Hi @ilovecake,

If there are no errors you’d need to debug what’s going on in your server configuration. My guess is that Smush is not even trying to optimize on upload, because the async call is not firing. It could be for a number of reasons – maybe staging has limited php worker or resources. On our staging we had a similar issue and increasing fastcgi_buffers/fastcgi_buffer_size seems to have fixed the issue. In any case, my recommendation would be to enable more verbose debugging on Apache/Nginx and PHP and try to catch any errors/warnings related to Smush that would allow to narrow down the issue.

Best regards,
Anton

I was able to increase the fastcgi_buffers and fastcgi_buffer_size values, but did not see any change in behavior. Do you know of any other possible changes we can take? Thanks.

@ilovecake,

Could you try and add

define( 'WP_SMUSH_ASYNC', false );

to wp-config.php?

Best regards,
Anton

Ah that worked! SHould i keep it there?

@ilovecake, for staging – yes. Probably best to remove it on production.

Best regards,
Anton

ok thanks, i’ll try and remember that. What do you think the cause of this problem is, that is resolved by this setting?

@ilovecake, it’s hard to say without properly debugging. I think it’s some limitation of staging that does not allow php to run multiple threads at once. Probably because staging is used to test out a feature and does not need the resources that are usually allocated to a production site.

Best regards,
Anton

Hm ok, this server is actually going to be the production server once we cut over the dns. It’s pretty powerful, at 4GB ram.

@ilovecake,

So the staging is basically production, but with different DNS? You’re not using cPanel/Plesk or any other control panel?

Best regards,
Anton

That’s correct. We’re not using CPanel/Plesk. We’re running a Digital Ocean server behind Cloudways.com hosting service. So you can say that Cloudways acts like a cPanel/Plesk middleman.