Slow Classes?

[rochow]

content-product.php

<li <?php post_class( $classes ); ?>>

Search results with this line of code: 15 seconds
Search results without: 5 seconds

Large database (about 40mb posts, 250mb post meta), but why does this seemingly basic function increase the time so much? PHP too not SQL, would make sense if it was doing lots of relationship queries or something (have "debug queries" installed which is where I'm getting figures).

On dev I trashed everything; literally WordPress, TwentyFifteen & WooCommerce left active. Same solution works on both dev & live with the same drastic results.

Thoughts?

[rochow]

This is an example class, "post-110843 product type-product status-publish has-post-thumbnail product_cat-gun-cases taxable shipping-taxable purchasable product-type-simple product-cat-gun-cases instock"

Built in WP function but not sure on the benefit of having it vs the huge cost it appears to have as soon as a site starts getting sizeable?

[claudiosanches]

In WooCommerce side we just add a feel more classes: https://github.com/woothemes/woocommerce/blob/ab61c8fa881c49c7ca659107f638d0b994536d34/includes/wc-template-functions.php#L250-L319
Feel free for remove it from your store by using:

remove_filter( 'post_class', 'wc_product_post_class', 20, 3 );

Please let know if have some improvement and maybe we can think about something to improve this in the future, but we'll keep it for now.