{"id":9354,"date":"2019-01-15T23:00:25","date_gmt":"2019-01-15T22:00:25","guid":{"rendered":"http:\/\/arumel.com\/?p=9354"},"modified":"2019-01-15T23:27:23","modified_gmt":"2019-01-15T22:27:23","slug":"configurar-hugepages-en-linux-script","status":"publish","type":"post","link":"https:\/\/arumel.com\/es\/configurar-hugepages-en-linux-script\/","title":{"rendered":"Configurar HugePages en Linux (script)"},"content":{"rendered":"<h1>Script para configurar HugePages en Linux<\/h1>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Algunas veces acabas de instalar el sistema operativo (OEL en nuestro caso) y quieres configurar las hugepages para que Oracle las use con la SGA.<\/p>\n<p>&nbsp;<\/p>\n<p>Aqu\u00ed vamos a dejar un script que las configura el porcentaje que t\u00fa quieras del total disponible de la m\u00e1quina (en nuestro caso es un 80%).<\/p>\n<p>&nbsp;<\/p>\n<p>* Ojo! &#8211;&gt; Cuando no hay nada m\u00e1s corriendo (ni oracle ni ning\u00fan otro servicio porque si hay una base de datos oracle, deber\u00edamos correr el script \u00ab<em>Oracle Linux: Shell Script to Calculate<\/em><br \/>\n<em>Values Recommended Linux HugePages \/ HugeTLB Configuration (Doc ID 401749.1)<\/em>\u00bb<\/p>\n<pre class=\"theme:familiar font:ubuntu-mono toolbar-overlay:false lang:default highlight:0 decode:true\" title=\"script hugepages\">[root@nodo01 ~]# chmod 700 \/tmp\/config_hugepages80.sh\r\n\r\n[root@nodo01 ~]# cat \/tmp\/config_hugepages80.sh\r\n#!\/bin\/bash\r\n\r\nround() {\r\n# Funci\u00f3n para sacar la media de las cpus (de la funci\u00f3n mira_cpus) ya que en algunas bash no funciona el t\u00edpico:\r\n# echo \"(`lscpu |grep ^\"CPU(s):\" | awk -F: {'print $2'} | tr -d '[:blank:]'`)\/2\" | bc\r\necho $(printf %.$2f $(echo \"scale=$2;(((10^$2)*$1)+0.5)\/(10^$2)\" | bc))\r\n}\r\n\r\nmemlibre=`awk '\/Hugepagesize:\/{p=$2}\/ 0 \/{next}\/ kB$\/{v[sprintf(\"%9d GB %-s\",int($2\/1024\/1024),$0)]=$0;next}{h[$0]=$2}END{for(k in v) print k;for (k in h) print sprintf(\"%9d GB %-s\",p*h[k]\/1024\/1024,k)}' \/proc\/meminfo|sort -nr|grep --color=auto -E \"^|.(Huge._[TF]|Mem).*:|\" |grep MemFree | awk '{ print $4 }'`\r\n\r\npagesize=`awk '\/Hugepagesize:\/{p=$2}\/ 0 \/{next}\/ kB$\/{v[sprintf(\"%9d GB %-s\",int($2\/1024\/1024),$0)]=$0;next}{h[$0]=$2}END{for(k in v) print k;for (k in h) print sprintf(\"%9d GB %-s\",p*h[k]\/1024\/1024,k)}' \/proc\/meminfo|sort -nr|grep --color=auto -E \"^|.(Huge._[TF]|Mem).*:|\" |grep Hugepagesize | awk '{ print $4 }'`\r\n\r\nhps=`echo $(round ${memlibre}\/${pagesize} 0)`\r\npags=`echo $(round ${hps}*80\/100 0)`\r\n\r\necho \"${pags}\" &gt; \/proc\/sys\/vm\/nr_hugepages\r\necho \"vm.nr_hugepages = ${pags}\" &gt;&gt; \/etc\/sysctl.conf\r\n\r\nsysctl -p &gt;&gt;\/dev\/null\r\n\r\nawk '\/Hugepagesize:\/{p=$2}\/ 0 \/{next}\/ kB$\/{v[sprintf(\"%9d GB %-s\",int($2\/1024\/1024),$0)]=$0;next}{h[$0]=$2}END{for(k in v) print k;for (k in h) print sprintf(\"%9d GB %-s\",p*h[k]\/1024\/1024,k)}' \/proc\/meminfo|sort -nr|grep --color=auto -E \"^|.(Huge._[TF]|Mem).*:|\"<\/pre>\n<p>&nbsp;<\/p>\n<p>Si quieres\u00a0 modificar el porcentaje del 80% puedes hacerlo en la l\u00ednea \u00abpags=\u00bb y sustituir el 80 por el valor que desees.<\/p>\n<p>&nbsp;<\/p>\n<p>Y lo ejecutamos:<\/p>\n<p><strong>[root@nodo01 ~]# \/tmp\/config_hugepages80.sh<\/strong><br \/>\n32767 GB VmallocTotal: 34359738367 kB<br \/>\n<strong>39 GB MemTotal: 41186732 kB<\/strong><br \/>\n34 GB DirectMap1G: 35651584 kB<br \/>\n<strong>28 GB HugePages_Total: 14416<\/strong><br \/>\n<strong>28 GB HugePages_Free: 14416<\/strong><br \/>\n<strong>10 GB MemAvailable: 10550832 kB<\/strong><br \/>\n9 GB CommitLimit: 10025680 kB<br \/>\n<strong>7 GB MemFree: 7384284 kB<\/strong><br \/>\n6 GB DirectMap2M: 7243776 kB<br \/>\n3 GB SwapTotal: 4194300 kB<br \/>\n3 GB SwapFree: 4194300 kB<br \/>\n3 GB Cached: 3452204 kB<br \/>\n1 GB Inactive(file): 1995756 kB<br \/>\n1 GB Inactive: 2011316 kB<br \/>\n1 GB Active(file): 1446100 kB<br \/>\n1 GB Active: 1462444 kB<br \/>\n0 GB SUnreclaim: 82040 kB<br \/>\n0 GB SReclaimable: 122556 kB<br \/>\n0 GB Slab: 204596 kB<br \/>\n0 GB Shmem: 16960 kB<br \/>\n0 GB PageTables: 2228 kB<br \/>\n0 GB Mapped: 33532 kB<br \/>\n0 GB KernelStack: 3696 kB<br \/>\n0 GB Inactive(anon): 15560 kB<br \/>\n0 GB HugePages_Surp: 0<br \/>\n0 GB HugePages_Rsvd: 0<br \/>\n0 GB Hugepagesize: 2048 kB<br \/>\n0 GB Dirty: 4 kB<br \/>\n0 GB DirectMap4k: 96256 kB<br \/>\n0 GB Committed_AS: 126564 kB<br \/>\n0 GB Buffers: 6608 kB<br \/>\n0 GB AnonPages: 15044 kB<br \/>\n0 GB Active(anon): 16344 kB<\/p>\n<p>&nbsp;<\/p>\n<p><strong><em>No olvides reiniciar el sistema y comprobar los valores modificados!<\/em><\/strong><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>El awk para ver las hugepages es cortes\u00eda de Franck Pachot (que aqu\u00ed no salen los colores pero en vivo le queda precioso \ud83d\ude09 ): https:\/\/twitter.com\/FranckPachot\/status\/1083023727460343808?s=19<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>A\u00f1adiendo valor con <a href=\"http:\/\/www.arumel.com\">Arumel<\/a>!!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Script para configurar HugePages en Linux &nbsp; &nbsp; Algunas veces acabas de instalar el sistema operativo (OEL en nuestro caso) y quieres configurar las hugepages para que Oracle las use con la SGA. &nbsp; Aqu\u00ed vamos a dejar un script que las configura el porcentaje que t\u00fa quieras del total disponible de la m\u00e1quina (en [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":7824,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[62,27],"tags":[369,56,14,368,370],"class_list":["post-9354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oracle","category-portada-es","tag-hugepages","tag-linux","tag-oracle","tag-script","tag-sga"],"yoast_head":"<!-- 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Revisando la nota \"MDBUtil: GI Management Repository configuration tool (Doc ID 2065175.1)\" decidimos a\u00f1adirla a mano. Comprobamos que no existe: [root@nodo01 tmp]# crsctl stat res -w \"NAME =\u2026","rel":"","context":"En &quot;Oracle&quot;","block_context":{"text":"Oracle","link":"https:\/\/arumel.com\/es\/oracle\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":9403,"url":"https:\/\/arumel.com\/es\/ovm-creando-maquinas-virtuales\/","url_meta":{"origin":9354,"position":3},"title":"OVM: Creando m\u00e1quinas virtuales","author":"sm","date":"22 de enero de 2019","format":false,"excerpt":"Buenas, para la creaci\u00f3n de las m\u00e1quinas virtuales utilizamos un script, que basa sus comandos en el 'ovmcli' que ya avanzamos aqu\u00ed: https:\/\/arumel.com\/es\/cli-ovm-manager-sin-password Lo m\u00e1s importante a tener en cuenta en la creaci\u00f3n de las m\u00e1quinas virtuales, es cuidar el orden de las tarjetas que a\u00f1adimos; eth0 debe ser siempre\u2026","rel":"","context":"En &quot;Oracle VM&quot;","block_context":{"text":"Oracle VM","link":"https:\/\/arumel.com\/es\/oracle-vm\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9759,"url":"https:\/\/arumel.com\/es\/recreando-la-gimr-en-oracle-19c-mgmtdb\/","url_meta":{"origin":9354,"position":4},"title":"Recreando la GIMR en Oracle 19c (MGMTDB)","author":"Carla Mu\u00f1oz L\u00f3pez","date":"9 de septiembre de 2019","format":false,"excerpt":" Realizando una tarea que consist\u00eda en cambiar el compatible.rdbms de los diskgroups de ASM a versi\u00f3n 18c me encontr\u00e9 que la GIMR se vi\u00f3 afectada, a pesar de ser la GI versi\u00f3n 19c. ORA-00202: control file: '+DGMGMTDB\/_MGMTDB\/CONTROLFILE\/current.262.1018190533' ORA-17503: ksfdopn:2 Failed to open file +DGMGMTDB\/_MGMTDB\/CONTROLFILE\/current.262.1018190533 ORA-15001: diskgroup \"DGMGMTDB\" does\u2026","rel":"","context":"En &quot;Oracle&quot;","block_context":{"text":"Oracle","link":"https:\/\/arumel.com\/es\/oracle\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2016\/11\/banner112.jpg?fit=1200%2C583&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2016\/11\/banner112.jpg?fit=1200%2C583&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2016\/11\/banner112.jpg?fit=1200%2C583&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2016\/11\/banner112.jpg?fit=1200%2C583&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2016\/11\/banner112.jpg?fit=1200%2C583&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":9274,"url":"https:\/\/arumel.com\/es\/templates-para-ovm-y-problema-con-advm-acfs-afd-not-supported\/","url_meta":{"origin":9354,"position":5},"title":"Templates para OVM y problema con ADVM\/ACFS \u00abAFD not supported\u00bb","author":"sm","date":"6 de enero de 2019","format":false,"excerpt":"Instalando las templates de Oracle para OVM e intentando usar ADVM\/ACFS \"AFD is not supported\" \u00a0 Quiz\u00e1s te hayas encontrado en la situaci\u00f3n de querer instalar las templates de Oracle para OVM, y adem\u00e1s utilizar ADVM\/ACFS para alg\u00fan filesystem, y te hayas encontrado este mensaje de error: WARNING (node:nodo01): AFD\u2026","rel":"","context":"En &quot;Oracle&quot;","block_context":{"text":"Oracle","link":"https:\/\/arumel.com\/es\/oracle\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1&resize=525%2C300 1.5x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/arumel.com\/wp-content\/uploads\/2017\/07\/arumel_xenia.jpeg?fit=635%2C900&ssl=1","_links":{"self":[{"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/posts\/9354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/comments?post=9354"}],"version-history":[{"count":8,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/posts\/9354\/revisions"}],"predecessor-version":[{"id":9370,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/posts\/9354\/revisions\/9370"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/media\/7824"}],"wp:attachment":[{"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/media?parent=9354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/categories?post=9354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arumel.com\/es\/wp-json\/wp\/v2\/tags?post=9354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}