{"id":12,"date":"2006-07-17T03:34:04","date_gmt":"2006-07-17T01:34:04","guid":{"rendered":"http:\/\/gcolpart.evolix.net\/blog21\/tcp-window-scaling-in-kernel-2617\/"},"modified":"2006-12-18T22:40:10","modified_gmt":"2006-12-18T20:40:10","slug":"tcp-window-scaling-in-kernel-2617","status":"publish","type":"post","link":"https:\/\/gcolpart.evolix.net\/blog21\/tcp-window-scaling-in-kernel-2617\/","title":{"rendered":"TCP window scaling in kernel 2.6.17"},"content":{"rendered":"<p>I had a strange problem: TCP freeze after HTTP GET with particular web sites (but no problem for HTTP HEAD for example) when I  use machines with 2.6.17 Linux (Debian) kernel. I find why. Use of TCP window scaling changes in 2.6.17 and some broken routers don&#8217;t like this. <a href=\"http:\/\/kerneltrap.org\/node\/6723\">Here<\/a> is interesting discussion about use of TCP window scaling.<\/p>\n<p>For my problem, fast (and bad)  work around is:<\/p>\n<p><code>echo 0 > \/proc\/sys\/net\/ipv4\/tcp_default_win_scale<\/code><\/p>\n<p>or even:<\/p>\n<p><code>echo 0 > \/proc\/sys\/net\/ipv4\/tcp_window_scaling<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I had a strange problem: TCP freeze after HTTP GET with particular web sites (but no problem for HTTP HEAD for example) when I use machines with 2.6.17 Linux (Debian) kernel. I find why. Use of TCP window scaling changes in 2.6.17 and some broken routers don&#8217;t like this. Here is interesting discussion about use [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,3,7],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","hentry","category-debian","category-english","category-network"],"_links":{"self":[{"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/posts\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/comments?post=12"}],"version-history":[{"count":0,"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/posts\/12\/revisions"}],"wp:attachment":[{"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/media?parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/categories?post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gcolpart.evolix.net\/blog21\/wp-json\/wp\/v2\/tags?post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}