Différences

Ci-dessous, les différences entre deux révisions de la page.

--- serveur-debian-mysql:mysql-tuner [20/10/2016 12:30] – créée zonewebmaster
+++ serveur-debian-mysql:mysql-tuner [08/10/2019 17:02] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 25: / Ligne 25: @@
 Important : Veuillez attendre au moins 48h après l'installation de **mysqltuner**. Ceci permettra au script d'avoir suffisamment de données pour que les recommandations puissent être pertinente.
 </WRAP>
+Voici un exemple de recommandations données lors de l'exécution de **mysqltuner**.
+<code>
+ >>  MySQLTuner 1.4.0 - Major Hayden <major@mhtx.net>
+ >>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
+ >>  Run with '--help' for additional options and output filtering
+[OK] Logged in using credentials from debian maintenance account.
+[OK] Currently running supported MySQL version 5.5.25-0+deb7u1-log
+[OK] Operating on 64-bit architecture
+-------- Storage Engine Statistics -------------------------------------------
+[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MRG_MYISAM +PINBA
+[--] Data in PINBA tables: 0B (Tables: 34)
+[--] Data in MyISAM tables: 229M (Tables: 1460)
+[--] Data in InnoDB tables: 440M (Tables: 114)
+[--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17)
+[!!] Total fragmented tables: 82
+-------- Security Recommendations  -------------------------------------------
+[OK] All database users have passwords assigned
+-------- Performance Metrics -------------------------------------------------
+[--] Up for: 32d 0h 4m 41s (31M q [11.422 qps], 876K conn, TX: 67B, RX: 4B)
+[--] Reads / Writes: 50% / 50%
+[--] Total buffers: 4.2G global + 2.7M per thread (151 max threads)
+[OK] Maximum possible memory usage: 4.6G (28% of installed RAM)
+[OK] Slow queries: 0% (411/31M)
+[OK] Highest usage of available connections: 35% (54/151)
+[OK] Key buffer size / total MyISAM indexes: 2.0G/258.9M
+[OK] Key buffer hit rate: 99.9% (550M cached / 477K reads)
+[OK] Query cache efficiency: 78.0% (16M cached / 21M selects)
+[OK] Query cache prunes per day: 0
+[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 266K sorts)
+[!!] Temporary tables created on disk: 74% (977K on disk / 1M total)
+[OK] Thread cache hit rate: 95% (41K created / 876K connections)
+[!!] Table cache hit rate: 0% (400 open / 163K opened)
+[OK] Open file limit used: 48% (495/1K)
+[OK] Table locks acquired immediately: 98% (8M immediate / 8M locks)
+[!!] InnoDB  buffer pool / data size: 128.0M/440.1M
+[OK] InnoDB log waits: 0
+-------- Recommendations -----------------------------------------------------
+General recommendations:
+    Run OPTIMIZE TABLE to defragment tables for better performance
+    When making adjustments, make tmp_table_size/max_heap_table_size equal
+    Reduce your SELECT DISTINCT queries without LIMIT clauses
+    Increase table_open_cache gradually to avoid file descriptor limits
+    Read this before increasing table_open_cache over 64: http://bit.ly/1mi7c4C
+Variables to adjust:
+    tmp_table_size (> 16M)
+    max_heap_table_size (> 16M)
+    table_open_cache (> 400)
+    innodb_buffer_pool_size (>= 440M)
+</code>
+===== Auteurs et sources =====
+  * Auteur : [[:user:montuy337513]]
+  * Sources : [[https://github.com/major/MySQLTuner-perl/|Site officiel du projet]]
 ===== Navigation =====
@@ Ligne 40: / Ligne 99: @@
   * [[:serveur-debian-divers]]
-===== Sources et crédits =====
+<nspages -h1 -exclude:subNs: -textPages="Autres liens rapides pouvant vous intéresser">
-  * Auteurs : [[:user:montuy337513]]
-  * Sources : [[https://github.com/major/MySQLTuner-perl/|Site officiel du projet]]