{"id":81,"date":"2008-11-08T06:02:00","date_gmt":"2008-11-08T06:02:00","guid":{"rendered":"https:\/\/knielsen-hq.org\/w\/?p=81"},"modified":"2021-09-01T10:09:36","modified_gmt":"2021-09-01T10:09:36","slug":"slides-for-my-lightning-talks-at-open-source-days-2008","status":"publish","type":"post","link":"https:\/\/knielsen-hq.org\/w\/slides-for-my-lightning-talks-at-open-source-days-2008\/","title":{"rendered":"Slides for my lightning talks at Open Source Days 2008"},"content":{"rendered":"\n<p>In case anyone is interested in a copy of my slides for the two lightning talks I gave at the <a href=\"http:\/\/www.opensourcedays.org\/2008\/\">Open Source Days 2008<\/a> conference, I have made them available here:<\/p>\n\n\n\n<ul><li>&#8220;Optimizing Large Databases Using InnoDB Clustered Indexes:&#8221; <a href=\"\/presentations\/innodb-clustered-index\/html\/\">HTML<\/a> and <a href=\"\/presentations\/innodb-clustered-index\/innodb-clustered-index.pdf\">PDF<\/a>.<\/li><li>&#8220;Profiling with OProfile and Intel Core 2 performance counters:&#8221; <a href=\"\/presentations\/oprofile-perfcount\/html\/\">HTML<\/a> and <a href=\"\/presentations\/oprofile-perfcount\/oprofile-perfcount.pdf\">PDF<\/a>.<\/li><\/ul>\n\n\n\n<p>I waqs quite pleased with the benchmark that I prepared for the InnoDB mini-talk, where I measure the performance difference between clustered and auto_increment primary key, both with data that fits in memory and with data that does not. I have wanted to do this benchmark for quite some time, as I have not really seen real results for this before, though the technique of using clustered primary keys for performance is well-known.<\/p>\n\n\n\n<p>The results are quite interesting, with clustered indexes being faster for I\/O bound load with more than an order of magnitude. It is also interesting to see how dead-cheap hardware can do 23k queries\/second and read 1000000 rows\/second with a properly tuned database.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In case anyone is interested in a copy of my slides for the two lightning talks I gave at the Open Source Days 2008 conference, I have made them available here: &#8220;Optimizing Large Databases Using InnoDB Clustered Indexes:&#8221; HTML and PDF. &#8220;Profiling with OProfile and Intel Core 2 performance counters:&#8221; HTML and PDF. I waqs&hellip; <a class=\"more-link\" href=\"https:\/\/knielsen-hq.org\/w\/slides-for-my-lightning-talks-at-open-source-days-2008\/\">Continue reading <span class=\"screen-reader-text\">Slides for my lightning talks at Open Source Days 2008<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[24,11,4,25,26],"_links":{"self":[{"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/posts\/81"}],"collection":[{"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/comments?post=81"}],"version-history":[{"count":1,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/posts\/81\/revisions"}],"predecessor-version":[{"id":82,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/posts\/81\/revisions\/82"}],"wp:attachment":[{"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/media?parent=81"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/categories?post=81"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/knielsen-hq.org\/w\/wp-json\/wp\/v2\/tags?post=81"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}