{"id":80,"date":"2010-05-30T12:37:07","date_gmt":"2010-05-30T10:37:07","guid":{"rendered":"http:\/\/smolensk.homelinux.org\/?p=80"},"modified":"2014-05-18T11:35:33","modified_gmt":"2014-05-18T09:35:33","slug":"afficher-les-performances-du-serveur","status":"publish","type":"post","link":"https:\/\/2d6.fr\/?p=80","title":{"rendered":"Afficher les performances du serveur"},"content":{"rendered":"

Voici une liste (non exhaustive) d’outils pour afficher les peformances de votre poste ou serveur.<\/p>\n

Il est \u00e0 noter que l’utilisation de la m\u00e9moire doit \u00eatre maximale, ce qui est perturbant !<\/p>\n

free<\/h4>\n

La commande free<\/strong><\/em> va afficher l’\u00e9tat de la m\u00e9moire, ajouter l’argument -m pour avoir un affichage plus compr\u00e9hensible (em m\u00e9ga octets)<\/p>\n

free -m<\/code><\/p>\n

total\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 used\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 free\u00a0\u00a0\u00a0\u00a0 shared\u00a0\u00a0\u00a0 buffers\u00a0\u00a0\u00a0\u00a0 cached
\nMem:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2026\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1219\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 806\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 131\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 562
\n-\/+ buffers\/cache:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 526\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1500
\nSwap:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1600\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1600<\/p><\/blockquote>\n

vmstat<\/h4>\n

vmstat<\/strong><\/em> va afficher des informations,\u00a0 \u00e0 intervalle r\u00e9gulier et un certain nombre de fois :<\/p>\n

vmstat 2 3<\/code><\/p>\n

va ex\u00e9cuter 3 fois la commande, toutes les 2 secondes. exemple de r\u00e9sultat :<\/p>\n

procs ———–memory———- —swap– —–io—- -system– —-cpu—-
\nr\u00a0 b\u00a0\u00a0 swpd\u00a0\u00a0 free\u00a0\u00a0 buff\u00a0 cache\u00a0\u00a0 si\u00a0\u00a0 so\u00a0\u00a0\u00a0 bi\u00a0\u00a0\u00a0 bo\u00a0\u00a0 in\u00a0\u00a0 cs us sy id wa
\n1\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 820464 134872 577152\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 37\u00a0\u00a0\u00a0 19\u00a0 144\u00a0 945\u00a0 7\u00a0 1 91\u00a0 1
\n0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 820456 134872 577152\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 0\u00a0 286 1387\u00a0 3\u00a0 0 97\u00a0 0
\n0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 820544 134872 577152\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 0\u00a0 278 1347\u00a0 5\u00a0 0 94\u00a0 0<\/p><\/blockquote>\n

\/proc\/meminfo<\/h4>\n

ce fichier<\/strong><\/em> contient le d\u00e9tail de la m\u00e9moire, on peut en afficher le contenu avec la commande<\/p>\n

cat \/proc\/meminfo<\/p><\/blockquote>\n

On y trouvera notamment l’info int\u00e9ressante Dirty<\/em>.<\/p>\n

top<\/h4>\n

L’utilitaire top<\/strong><\/em> va afficher les processus et l’utilisation qu’ils font des ressources (voir \u00e9galement\u00a0 ps -aux<\/em> )<\/p>\n

P va trier par utilisation du processeur<\/p>\n

M va trier par utilisation m\u00e9moire<\/p>\n

Z\u00a0 puis w pour changer la couleur (afin de le rendre plus visible)<\/p><\/blockquote>\n

htop<\/h4>\n

l’utilitaire htop<\/strong><\/em> ( \u00e0 installer avec\u00a0 apt-get install htop<\/em> ou \u00e9quivalent de votre distribution)\u00a0 est une version plus compl\u00e8te (mais vraiment plus utile ?) de top.<\/p>\n

iotop<\/h4>\n

L’utilitaire iotop<\/strong><\/em> va afficher les acc\u00e8s disques.<\/p>\n

Il peut \u00eatre utile parfois d’utiliser la commande lsof<\/strong><\/em> pour savoir quels sont les process qui acc\u00e8dent \u00e0 certains dossiers..<\/p>\n

uptime<\/h4>\n

uptime va vous afficher plusieurs informations, suffisantes pour un aper\u00e7u de ce qui se passe.<\/p>\n

12:34:00 up 79 days, 21:40,\u00a0 2 users,\u00a0 load average: 0.31, 0.23, 0.19<\/p><\/blockquote>\n

On voit ici que ce serveur est d\u00e9marr\u00e9 depuis 79 jours, que 2 utilisateurs y sont connect\u00e9s, et que sa charge machine ( 5 derni\u00e8res minutes \/ 10 derni\u00e8res minutes \/ 15 derni\u00e8res minutes) est assez faible.<\/p>\n","protected":false},"excerpt":{"rendered":"

Outils pour afficher les performances du poste\/serveur linux …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[97,24],"class_list":["post-80","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux","tag-performances"],"_links":{"self":[{"href":"https:\/\/2d6.fr\/index.php?rest_route=\/wp\/v2\/posts\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/2d6.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2d6.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2d6.fr\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/2d6.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=80"}],"version-history":[{"count":0,"href":"https:\/\/2d6.fr\/index.php?rest_route=\/wp\/v2\/posts\/80\/revisions"}],"wp:attachment":[{"href":"https:\/\/2d6.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=80"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2d6.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=80"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2d6.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}