{"id":37,"date":"2002-10-19T09:37:44","date_gmt":"2002-10-19T13:37:44","guid":{"rendered":"\/?p=37"},"modified":"2025-07-08T21:55:45","modified_gmt":"2025-07-09T01:55:45","slug":"mach_o_vs_cfm","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2002\/10\/19\/mach_o_vs_cfm\/","title":{"rendered":"Mach-O vs. CFM"},"content":{"rendered":"Slava Karpenko writes about the <a href=\"http:\/\/www.unsanity.org\/archives\/000044.php\">problems<\/a> of Mac OS X using the Mach-O ABI, estimating that it causes a 10% performance hit because Mach-O was designed for a CISC architecture. I haven&rsquo;t studied this enough to know whether he&rsquo;s right, but I&rsquo;ve not heard <em>any<\/em> arguments that Mach-O is technically better.","protected":false},"excerpt":{"rendered":"<p>Slava Karpenko writes about the problems of Mac OS X using the Mach-O ABI, estimating that it causes a 10% performance hit because Mach-O was designed for a CISC architecture. I haven&rsquo;t studied this enough to know whether he&rsquo;s right, but I&rsquo;ve not heard any arguments that Mach-O is technically better.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2025-07-09T01:55:46Z","apple_news_api_id":"5bc49596-9b0e-48bf-94d0-4b7a15bfdd96","apple_news_api_modified_at":"2025-07-09T01:55:47Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/AW8SVlpsOSL-U0Et6Fb_dlg","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[4],"tags":[2792],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-programming-category","tag-mach-o"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"predecessor-version":[{"id":48409,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/37\/revisions\/48409"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}