franccan

Hi Bert,

I’ve also created this issue describing the problem in more detail.

https://github.com/WordPress/gutenberg/issues/24893

Regards,

Francisco

Hi I thought of tracing PHP just to see what the OS was doing and it seems the new version reads a lot more times from the file system

– fstat/stat present when tracing v5.5 home page: 87
– fstat/stat present when tracing in v5.4 home page: 9

This is related to many additional .json files being loaded in v5.5 which was not the case for v5.4. -> https://github.com/WordPress/WordPress/blob/master/wp-includes/blocks.php#L190

Hi Yui,

Thanks for your response but I think that there is something causing the new version to respond slower.

Take a look at the example below, this a new fresh install using OPCache. WordpPress v5.4 used to load in about 22ms and WordpPress v5.5 is now taking close to 150-200ms. (6-10x slower) Same server, same storage, same client.

Disabling OPCache produces similar but less dramatic results: v5.4 loads in about 600ms and v5.5 in about 1,300ms (2X slower)

[ec2-user@ip-172-31-45-146 html]$ cat wp54/wp-includes/version.php | grep '$wp_version ='
$wp_version = '5.4.2';
[ec2-user@ip-172-31-45-146 html]$ cat wp55/wp-includes/version.php | grep '$wp_version ='
$wp_version = '5.5';
[ec2-user@ip-172-31-45-146 html]$ cat /etc/php.d/10-opcache.ini | grep opcache.enable=
opcache.enable=1

[ec2-user@ip-172-31-45-146 html]$ for i in {1..10}; do curl -o /dev/null -s -w "%{time_starttransfer}\n" https://127.0.0.1/wp54/; done
0.026642
0.025308
0.028559
0.024185
0.025022
0.026277
0.034598
0.022461
0.034280
0.025716
[ec2-user@ip-172-31-45-146 html]$ for i in {1..10}; do curl -o /dev/null -s -w "%{time_starttransfer}\n" https://127.0.0.1/wp55/; done
0.219753
0.190224
0.188829
0.189912
0.181504
0.183236
0.189652
0.188126
0.207370
0.208778

[ec2-user@ip-172-31-45-146 html]$ cat /etc/php.d/10-opcache.ini | grep opcache.enable=
opcache.enable=0
[ec2-user@ip-172-31-45-146 html]$ for i in {1..10}; do curl -o /dev/null -s -w "%{time_starttransfer}\n" https://127.0.0.1/wp55/; done
1.944018
1.415046
1.444394
1.391490
1.391182
1.385474
1.341410
1.325611
1.381883
1.397277
[ec2-user@ip-172-31-45-146 html]$ for i in {1..10}; do curl -o /dev/null -s -w "%{time_starttransfer}\n" https://127.0.0.1/wp54/; done
0.918116
0.659779
0.640934
0.618937
0.613510
0.641750
0.617641
0.608814
0.611889
0.649169

• This reply was modified 4 years, 3 months ago by franccan.
• This reply was modified 4 years, 3 months ago by franccan.
• This reply was modified 4 years, 3 months ago by franccan.