{"id":1598,"date":"2012-11-24T16:49:07","date_gmt":"2012-11-24T14:49:07","guid":{"rendered":"http:\/\/www.tutego.de\/blog\/javainsel\/?p=1598"},"modified":"2012-11-24T17:02:56","modified_gmt":"2012-11-24T15:02:56","slug":"contended-knnte-in-java-8-kommen","status":"publish","type":"post","link":"https:\/\/www.tutego.de\/blog\/javainsel\/2012\/11\/contended-knnte-in-java-8-kommen\/","title":{"rendered":"@Contended k&ouml;nnte in Java 8 kommen"},"content":{"rendered":"<p>Die Annotation verhindert Cache-Contention (false sharing), also ein Wartezyklus, weil zwei Kerne auf Daten im Prozessor-Cache zugreifen wollen, der aber erst synchronisiert werden m\u00fcssen.<\/p>\n<p>Siehe <a title=\"http:\/\/openjdk.java.net\/jeps\/142\" href=\"http:\/\/openjdk.java.net\/jeps\/142\">http:\/\/openjdk.java.net\/jeps\/142<\/a>, <a title=\"http:\/\/mail.openjdk.java.net\/pipermail\/hotspot-dev\/2012-November\/007309.html\" href=\"http:\/\/mail.openjdk.java.net\/pipermail\/hotspot-dev\/2012-November\/007309.html\">http:\/\/mail.openjdk.java.net\/pipermail\/hotspot-dev\/2012-November\/007309.html<\/a>, <a title=\"http:\/\/en.wikipedia.org\/wiki\/False_sharing\" href=\"http:\/\/en.wikipedia.org\/wiki\/False_sharing\">http:\/\/en.wikipedia.org\/wiki\/False_sharing<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Die Annotation verhindert Cache-Contention (false sharing), also ein Wartezyklus, weil zwei Kerne auf Daten im Prozessor-Cache zugreifen wollen, der aber erst synchronisiert werden m\u00fcssen. Siehe http:\/\/openjdk.java.net\/jeps\/142, http:\/\/mail.openjdk.java.net\/pipermail\/hotspot-dev\/2012-November\/007309.html, http:\/\/en.wikipedia.org\/wiki\/False_sharing.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[66],"tags":[],"class_list":["post-1598","post","type-post","status-publish","format-standard","hentry","category-java-8"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts\/1598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/comments?post=1598"}],"version-history":[{"count":2,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts\/1598\/revisions"}],"predecessor-version":[{"id":1600,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts\/1598\/revisions\/1600"}],"wp:attachment":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/media?parent=1598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/categories?post=1598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/tags?post=1598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}