{"id":720,"date":"2012-06-06T19:19:46","date_gmt":"2012-06-06T18:19:46","guid":{"rendered":"http:\/\/spatzentrauma.de\/blog\/?p=720"},"modified":"2012-06-10T16:41:43","modified_gmt":"2012-06-10T15:41:43","slug":"problems-with-bfs-0-422","status":"publish","type":"post","link":"http:\/\/spatzentrauma.de\/blog\/2012\/06\/problems-with-bfs-0-422\/","title":{"rendered":"Problems with BFS 0.422"},"content":{"rendered":"<p>The <a href=\"http:\/\/ck-hack.blogspot.de\/2012\/06\/bfs-0422-34-ck1.html\" target=\"_blank\">latest<\/a> version of BFS has a strange effect on my box here. The first time i got aware of it was when i ran <em>apt-get update<\/em> (debian way of sync&#8217;ing package lists) which worked normal up to the point of reading local package lists from disk. It was horribly slow. Normally, it needs ~5 seconds to complete, this time it ran for several minutes but I\/O-utilization was 100% (using top\/iotop). And the sound of the disk was different too.<\/p>\n<p>A more repeatable test: <em>dd if=\/dev\/zero of=dd_disk_test bs=123K count=5000<\/em> needed 112 seconds which sums up to 5.6 MB\/s &#8211; way to slow. The same test with a different disk, a 128 GB SSD had twice the rate, 9.7 MB\/s, but way to slow too. No other sign of wrong-doing, everything else was fine. Changing the kernel did the trick. Same Version, linux-3.4.1, but without BFS runs fine: same test completed in 5 seconds (124 MB\/s). At the moment i have no glue how to dig into the problem to find the root of it.<\/p>\n<p>\/edit: nope, it&#8217;s back. After a certain amount of uptime i saw the problem with a vanilla kernel too. (10.6.12)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The latest version of BFS has a strange effect on my box here. The first time i got aware of it was when i ran apt-get update (debian way of sync&#8217;ing package lists) which worked normal up to the point &hellip; <a href=\"http:\/\/spatzentrauma.de\/blog\/2012\/06\/problems-with-bfs-0-422\/\">Weiterlesen <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17,4,11],"tags":[19,257],"_links":{"self":[{"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/posts\/720"}],"collection":[{"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/comments?post=720"}],"version-history":[{"count":6,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/posts\/720\/revisions"}],"predecessor-version":[{"id":724,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/posts\/720\/revisions\/724"}],"wp:attachment":[{"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/media?parent=720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/categories?post=720"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/spatzentrauma.de\/blog\/wp-json\/wp\/v2\/tags?post=720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}