{"id":479762,"date":"2023-08-09T10:44:16","date_gmt":"2023-08-09T10:44:16","guid":{"rendered":""},"modified":"2023-09-05T11:19:31","modified_gmt":"2023-09-05T11:19:31","slug":"zombie-process","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/zombie-process\/","title":{"rendered":"Qu\u00e1 tr\u00ecnh zombie"},"content":{"rendered":"<p>Th\u00f4ng tin t\u00f3m t\u1eaft v\u1ec1 qu\u00e1 tr\u00ecnh Zombie<\/p>\n<p>Ti\u1ebfn tr\u00ecnh Zombie l\u00e0 m\u1ed9t ti\u1ebfn tr\u00ecnh m\u00e1y t\u00ednh \u0111\u00e3 ho\u00e0n th\u00e0nh vi\u1ec7c th\u1ef1c thi nh\u01b0ng v\u1eabn c\u00f2n m\u1ed9t m\u1ee5c trong b\u1ea3ng ti\u1ebfn tr\u00ecnh. T\u00ecnh hu\u1ed1ng n\u00e0y x\u1ea3y ra trong \u0111i\u1ec7n to\u00e1n khi m\u1ed9t ti\u1ebfn tr\u00ecnh con \u0111\u00e3 th\u1ef1c thi xong nh\u01b0ng ti\u1ebfn tr\u00ecnh cha c\u1ee7a n\u00f3 v\u1eabn ch\u01b0a \u0111\u1ecdc tr\u1ea1ng th\u00e1i tho\u00e1t c\u1ee7a n\u00f3. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c quy tr\u00ecnh Zombie trong h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 v\u1ea5n \u0111\u1ec1, nh\u01b0ng vi\u1ec7c t\u00edch t\u1ee5 ch\u00fang c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a qu\u00e1 tr\u00ecnh Zombie v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m v\u1ec1 quy tr\u00ecnh Zombie \u0111\u00e3 c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Unix, c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1960 ho\u1eb7c \u0111\u1ea7u nh\u1eefng n\u0103m 1970. Ch\u00fang l\u00e0 h\u1ec7 qu\u1ea3 t\u1ef1 nhi\u00ean c\u1ee7a thi\u1ebft k\u1ebf qu\u1ea3n l\u00fd quy tr\u00ecnh Unix, t\u00e1ch bi\u1ec7t vi\u1ec7c ch\u1ea5m d\u1ee9t v\u00e0 truy xu\u1ea5t tr\u1ea1ng th\u00e1i tho\u00e1t c\u1ee7a m\u1ed9t quy tr\u00ecnh. Thu\u1eadt ng\u1eef \u201cZombie\u201d \u0111\u01b0\u1ee3c \u0111\u1eb7t ra \u0111\u1ec3 m\u00f4 t\u1ea3 nh\u1eefng quy tr\u00ecnh n\u00e0y v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt \u0111\u00e3 \u201cch\u1ebft\u201d nh\u01b0ng v\u1eabn t\u1ed3n t\u1ea1i trong h\u1ec7 th\u1ed1ng.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 qu\u00e1 tr\u00ecnh Zombie. M\u1edf r\u1ed9ng quy tr\u00ecnh ch\u1ee7 \u0111\u1ec1 Zombie<\/h2>\n<p>Ti\u1ebfn tr\u00ecnh Zombie \u0111\u01b0\u1ee3c t\u1ea1o khi ti\u1ebfn tr\u00ecnh con k\u1ebft th\u00fac nh\u01b0ng ti\u1ebfn tr\u00ecnh cha kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i tho\u00e1t c\u1ee7a n\u00f3. H\u1ec7 \u0111i\u1ec1u h\u00e0nh gi\u1eef m\u1ed9t m\u1ee5c trong b\u1ea3ng quy tr\u00ecnh cho quy tr\u00ecnh Zombie, duy tr\u00ec th\u00f4ng tin m\u00e0 quy tr\u00ecnh g\u1ed1c c\u00f3 th\u1ec3 c\u1ea7n sau n\u00e0y.<\/p>\n<p>C\u00e1c ti\u1ebfn tr\u00ecnh zombie th\u01b0\u1eddng v\u00f4 h\u1ea1i, chi\u1ebfm m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng. Tuy nhi\u00ean, n\u1ebfu m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh li\u00ean t\u1ee5c t\u1ea1o ra c\u00e1c ti\u1ebfn tr\u00ecnh con tr\u1edf th\u00e0nh Zombie, n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u1ea1n ki\u1ec7t c\u00e1c m\u1ee5c trong b\u1ea3ng quy tr\u00ecnh, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a qu\u00e1 tr\u00ecnh Zombie. Qu\u00e1 tr\u00ecnh Zombie ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n<p>Khi m\u1ed9t ti\u1ebfn tr\u00ecnh con k\u1ebft th\u00fac vi\u1ec7c th\u1ef1c thi, n\u00f3 s\u1ebd g\u1eedi t\u00edn hi\u1ec7u SIGCHLD \u0111\u1ebfn ti\u1ebfn tr\u00ecnh cha. Tr\u1ea1ng th\u00e1i c\u1ee7a ti\u1ebfn tr\u00ecnh con \u0111\u01b0\u1ee3c gi\u1eef nguy\u00ean v\u00e0 n\u00f3 tr\u1edf th\u00e0nh Zombie cho \u0111\u1ebfn khi ti\u1ebfn tr\u00ecnh cha \u0111\u1ecdc tr\u1ea1ng th\u00e1i tho\u00e1t b\u1eb1ng l\u1ec7nh g\u1ecdi h\u1ec7 th\u1ed1ng nh\u01b0 <code data-no-translation=\"\">wait()<\/code> ho\u1eb7c <code data-no-translation=\"\">waitpid()<\/code>. M\u1ee5c nh\u1eadp b\u1ea3ng quy tr\u00ecnh c\u1ee7a Zombie sau \u0111\u00f3 s\u1ebd b\u1ecb x\u00f3a.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a quy tr\u00ecnh Zombie<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a quy tr\u00ecnh Zombie bao g\u1ed3m:<\/p>\n<ul>\n<li>N\u00f3 \u0111\u00e3 ho\u00e0n th\u00e0nh vi\u1ec7c th\u1ef1c thi nh\u01b0ng v\u1eabn c\u00f2n trong b\u1ea3ng ti\u1ebfn tr\u00ecnh.<\/li>\n<li>N\u00f3 ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng t\u1ed1i thi\u1ec3u.<\/li>\n<li>Ti\u1ebfn tr\u00ecnh cha c\u00f3 th\u1ec3 truy xu\u1ea5t tr\u1ea1ng th\u00e1i tho\u00e1t c\u1ee7a n\u00f3.<\/li>\n<li>N\u00f3 kh\u00f4ng th\u1ec3 b\u1ecb gi\u1ebft v\u00ec n\u00f3 \u0111\u00e3 b\u1ecb ch\u1ea5m d\u1ee9t.<\/li>\n<li>Vi\u1ec7c t\u00edch t\u1ee5 c\u00e1c quy tr\u00ecnh Zombie c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i quy tr\u00ecnh Zombie<\/h2>\n<p>C\u00e1c quy tr\u00ecnh zombie nh\u00ecn chung gi\u1ed1ng nhau v\u1ec1 b\u1ea3n ch\u1ea5t, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nhi\u1ec1u lo\u1ea1i ch\u01b0\u01a1ng tr\u00ecnh ho\u1eb7c l\u1ed7i h\u1ec7 th\u1ed1ng kh\u00e1c nhau:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ngu\u1ed3n g\u1ed1c<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u1ed7i l\u1eadp tr\u00ecnh<\/td>\n<td>Th\u01b0\u1eddng do x\u1eed l\u00fd kh\u00f4ng \u0111\u00fang c\u00e1c ti\u1ebfn tr\u00ecnh con<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7i h\u1ec7 th\u1ed1ng<\/td>\n<td>\u0110\u00f4i khi l\u00e0 do l\u1ed7i trong h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/td>\n<\/tr>\n<tr>\n<td>Qu\u00e1 tr\u00ecnh m\u1ed3 c\u00f4i<\/td>\n<td>N\u1ebfu ti\u1ebfn tr\u00ecnh cha ch\u1ebft tr\u01b0\u1edbc khi \u0111\u1ecdc tr\u1ea1ng th\u00e1i c\u1ee7a ti\u1ebfn tr\u00ecnh con<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng quy tr\u00ecnh Zombie, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n<p>C\u00e1c quy tr\u00ecnh zombie th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t tri\u1ec7u ch\u1ee9ng c\u1ee7a m\u1ed9t v\u1ea5n \u0111\u1ec1 h\u01a1n l\u00e0 m\u1ed9t th\u1ee9 g\u00ec \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p th\u01b0\u1eddng g\u1eb7p:<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong> S\u1ef1 t\u00edch t\u1ee5 c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh Zombie.\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> X\u1eed l\u00fd \u0111\u00fang c\u00e1c ti\u1ebfn tr\u00ecnh con c\u1ee7a ti\u1ebfn tr\u00ecnh cha b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <code data-no-translation=\"\">wait()<\/code> ho\u1eb7c c\u00e1c ch\u1ee9c n\u0103ng li\u00ean quan.<\/li>\n<\/ul>\n<\/li>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong> G\u1ee1 l\u1ed7i vi\u1ec7c t\u1ea1o Zombie.\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong> S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 g\u1ee1 l\u1ed7i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c vi\u1ec7c x\u1eed l\u00fd quy tr\u00ecnh kh\u00f4ng \u0111\u00fang.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 nh\u1eefng so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<ul>\n<li><strong>Qu\u00e1 tr\u00ecnh zombie:<\/strong>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i:<\/strong> \u0110\u00e3 ch\u1ea5m d\u1ee9t nh\u01b0ng hi\u1ec7n t\u1ea1i<\/li>\n<li><strong>Ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean:<\/strong> T\u1ed1i thi\u1ec3u<\/li>\n<\/ul>\n<\/li>\n<li><strong>Qu\u00e1 tr\u00ecnh m\u1ed3 c\u00f4i:<\/strong>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i:<\/strong> Ch\u1ea1y m\u00e0 kh\u00f4ng c\u00f3 cha m\u1eb9<\/li>\n<li><strong>Ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean:<\/strong> B\u00ecnh th\u01b0\u1eddng<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn qu\u00e1 tr\u00ecnh Zombie<\/h2>\n<p>Khi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u00e0 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh ph\u00e1t tri\u1ec3n, c\u00e1c c\u00e1ch m\u1edbi \u0111\u1ec3 qu\u1ea3n l\u00fd quy tr\u00ecnh c\u0169ng \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n, l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng x\u1ea3y ra c\u00e1c quy tr\u00ecnh Zombie. Tuy nhi\u00ean, mi\u1ec5n l\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd quy tr\u00ecnh truy\u1ec1n th\u1ed1ng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u00ec c\u00e1c quy tr\u00ecnh Zombie s\u1ebd v\u1eabn ph\u00f9 h\u1ee3p.<\/p>\n<h2>L\u00e0m th\u1ebf n\u00e0o m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft v\u1edbi qu\u00e1 tr\u00ecnh Zombie<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p th\u01b0\u1eddng kh\u00f4ng t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c quy tr\u00ecnh c\u1ee7a Zombie. Tuy nhi\u00ean, hi\u1ec3u bi\u1ebft v\u1ec1 qu\u1ea3n l\u00fd quy tr\u00ecnh, bao g\u1ed3m c\u1ea3 Zombie, l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd m\u00e1y ch\u1ee7 proxy \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean hi\u1ec7u qu\u1ea3.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.unix.com\/man-page\/posix\/1posix\/wait\/\" target=\"_new\" rel=\"noopener nofollow\">Qu\u1ea3n l\u00fd quy tr\u00ecnh Unix<\/a><\/li>\n<li><a href=\"https:\/\/man7.org\/linux\/man-pages\/man5\/proc.5.html\" target=\"_new\" rel=\"noopener nofollow\">Tr\u1ea1ng th\u00e1i ti\u1ebfn tr\u00ecnh Linux<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">Trang web OneProxy<\/a> cho c\u00e1c gi\u1ea3i ph\u00e1p proxy ti\u00ean ti\u1ebfn v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 li\u00ean quan.<\/li>\n<\/ul>","protected":false},"featured_media":471000,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479762","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Zombie Process<\/mark>","faq_items":[{"question":"What is a Zombie Process?","answer":"<p>A Zombie process is a terminated computer process that still has an entry in the process table. Although it has finished execution, its parent process hasn't read its exit status, leaving it in a \"dead\" state in the system.<\/p>"},{"question":"When Did the Concept of Zombie Processes Originate?","answer":"<p>The concept likely emerged during the late 1960s or early 1970s in the context of Unix, stemming from the design of Unix process management.<\/p>"},{"question":"Are Zombie Processes Harmful to My System?","answer":"<p>Zombie processes themselves typically consume minimal resources and are generally harmless. However, a buildup of Zombie processes due to improper handling can consume system resources, potentially leading to issues.<\/p>"},{"question":"How Can I Prevent or Remove Zombie Processes?","answer":"<p>You can prevent Zombie processes by ensuring that parent processes properly read the exit status of child processes using system calls like <code>wait()<\/code>. Tools and debugging methods are available to identify and fix improper process handling, helping to remove existing Zombies.<\/p>"},{"question":"How Do Zombie Processes Compare to Orphan Processes?","answer":"<p>Zombie processes are terminated but still present in the process table with minimal resource consumption. Orphan processes, on the other hand, continue to run without a parent process and consume normal resources.<\/p>"},{"question":"How are Proxy Servers like OneProxy Related to Zombie Processes?","answer":"<p>Proxy servers, such as those provided by OneProxy, don't directly interact with Zombie processes. However, understanding process management, including Zombie processes, is vital for system administrators managing proxy servers to ensure system efficiency and stability.<\/p>"},{"question":"What are the Future Perspectives Related to Zombie Processes?","answer":"<p>As technology evolves, new ways of managing processes are being developed that may reduce the occurrence of Zombie processes. Yet, they remain a relevant concept in traditional process management and continue to be an area of study and understanding.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479762\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/471000"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}