These two template tags:
wp_list_authors(<?php wp_list_authors(); ?>) and
list_authors (<?php list_authors(); ?>) (no matter what functions within them are called)
add an extra query to the database for each member registered on the blog - weather they are authors or not. On mine it adds 24 extra queries as shown below. This action should only be taken out in one database query to reduce the time for the page to load.
[24] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '17' AND post_status = 'publish'
[1] => 0.0088999271392822
)
[25] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '15' AND post_status = 'publish'
[1] => 0.008976936340332
)
[26] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '4' AND post_status = 'publish'
[1] => 0.009009838104248
)
[27] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '19' AND post_status = 'publish'
[1] => 0.0088570117950439
)
[28] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '2' AND post_status = 'publish'
[1] => 0.0090000629425049
)
[29] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '9' AND post_status = 'publish'
[1] => 0.0089190006256104
)
[30] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '8' AND post_status = 'publish'
[1] => 0.0088551044464111
)
[31] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '13' AND post_status = 'publish'
[1] => 0.011569976806641
)
[32] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '12' AND post_status = 'publish'
[1] => 0.010303974151611
)
[33] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '14' AND post_status = 'publish'
[1] => 0.0098090171813965
)
[34] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '11' AND post_status = 'publish'
[1] => 0.02720308303833
)
[35] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '7' AND post_status = 'publish'
[1] => 0.0099828243255615
)
[36] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '18' AND post_status = 'publish'
[1] => 0.011690855026245
)
[37] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '20' AND post_status = 'publish'
[1] => 0.0088968276977539
)
[38] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '6' AND post_status = 'publish'
[1] => 0.0089771747589111
)
[39] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '10' AND post_status = 'publish'
[1] => 0.0090258121490479
)
[40] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '5' AND post_status = 'publish'
[1] => 0.0089180469512939
)
[41] => Array
(
[0] => SELECT COUNT(*) FROM wp_posts WHERE post_author = '16' AND post_status = 'publish'
[1] => 0.008929967880249
)
