I noticed Wikipedia was extraordinarily slow.<\/p>\n
Instead of being normal and thinking, “Huh, I can’t reach Wikipedia,” I decided to investigate. One neat thing about Wikipedia is that it’s very open: not just in the sense than anyone can edit Wikipedia or that Mediawiki is open-source, but that you can view their Ganglia monitoring system<\/a> and even an (off-site) server admin log<\/a>, which in this case reveals the problem. (Reversing the order of entries so that it’s chronological):<\/p>\n So there you have it. A broken configuration file got released, breaking all the backend Apache webservers. It was fixed, but seems that the cache is still being rebuilt, so it might be slow for a while. In the meantime, why not read up on the Wikipedia server cluster<\/a>? Or some graphs<\/a>? For example, the daily bandwidth usage<\/a>: pmtpa is their Tampa, FL colocation facility (serving the US) and knams is in the Netherlands (I think). (yaseo, the yellow one on the legend with no data, is a Yahoo data center in Korea.) You can see that the US cluster is hitting 3 Gbps, while the Europe cluster is exceeding 5 Gbps (!).<\/p>\n In any case, Wikipedia’s back up now. \ud83d\ude1b<\/p>","protected":false},"excerpt":{"rendered":" I noticed Wikipedia was extraordinarily slow. Instead of being normal and thinking, “Huh, I can’t reach Wikipedia,” I decided to investigate. One neat thing about Wikipedia is that it’s very open: not just in the sense than anyone can edit … Continue reading \n# 14:00 RobH: updated redirects.conf and pushed change for orphaned domains. \n# 14:01 RobH: Site is down, go me =[\n# 14:06 RobH: Pushed out old redirects.conf and restarted apaches.\n# 14:10 RobH: Site back up, slow as squids play catchup.\n<\/blockquote>\n
![daily bandwidth usage<\/a>: pmtpa is their Tampa, FL colocation facility (serving the US) and knams is in the Netherlands (I think). (yaseo, the yellow one on the legend with no data, is a Yahoo data center in Korea.) You can see that the US cluster is hitting 3 Gbps, while the Europe cluster is exceeding 5 Gbps (!).<\/p>\nIn any case, Wikipedia’s back up now. \ud83d\ude1b<\/p>","protected":false},"excerpt":{"rendered":"I noticed Wikipedia was extraordinarily slow. Instead of being normal and thinking, “Huh, I can’t reach Wikipedia,” I decided to investigate. One neat thing about Wikipedia is that it’s very open: not just in the sense than anyone can edit … Continue reading →<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1181","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/posts\/1181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/comments?post=1181"}],"version-history":[{"count":0,"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/posts\/1181\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/media?parent=1181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/categories?post=1181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.n1zyy.com\/n1zyy\/wp-json\/wp\/v2\/tags?post=1181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}](\"http:\/\/www.nedworks.org\/~mark\/reqstats\/trafficstats-daily.png\"){kind=link}