WordPress のインストールでパフォーマンスの問題が発生しています。複数のスロー クエリ テストを実行しましたが、それらの間にある程度の一貫性は見られますが、まだ問題を特定することはできません。私が何度も見たクエリのいくつかを次に示します。
SET timestamp=1333980631;
SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (1442,4054) ) AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private') GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 2;
と
### 1 Query
### Total time: 3.015405, Average time: 3.015405
### Taking 3.015405 seconds to complete
### Rows analyzed 60
SET timestamp=XXX;
SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) WHERE XXX=XXX AND ( wp_term_relationships.term_taxonomy_id IN (XXX) ) AND wp_posts.post_type = 'XXX' AND (wp_posts.post_status = 'XXX') GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT XXX, XXX;
SET timestamp=1334004964;
SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (125) ) AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish') GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 8;
と
### 1 Query
### Total time: 1.593301, Average time: 1.593301
### Taking 1.593301 seconds to complete
### Rows analyzed 19755
SET timestamp=XXX;
SELECT /*!XXX SQL_NO_CACHE */ * FROM `wp_posts`;
SET timestamp=1333978522;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `wp_posts`;
wp_term_taxonomy
、および他のいくつかと一緒に出てくるように見えることに気付きwp_posts
ました。私の質問は、どうすればこれらの結果を絞り込み、問題を見つけることができるでしょうか?