{"id":122613,"date":"2025-03-20T01:46:01","date_gmt":"2025-03-19T23:46:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlen-tinykvm-dlya-virtualizaczii-na-urovne-otdelnyh-proczessov"},"modified":"2025-03-20T01:46:01","modified_gmt":"2025-03-19T23:46:02","slug":"predstavlen-tinykvm-dlya-virtualizaczii-na-urovne-otdelnyh-proczessov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/predstavlen-tinykvm-dlya-virtualizaczii-na-urovne-otdelnyh-proczessov","title":{"rendered":"Wprowadzono TinyKVM do wirtualizacji na poziomie pojedynczych proces\u00f3w","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Firma Varnish Software, opracowuj\u0105ca systemy do budowy sieci dostarczania i cache'owania tre\u015bci, zaprezentowa\u0142a otwarty projekt TinyKVM, rozwijaj\u0105cy narz\u0119dzia do izolacji wykonania poszczeg\u00f3lnych proces\u00f3w przy u\u017cyciu hyperwizora KVM. Celem projektu jest stworzenie najszybszego systemu sandboxowej izolacji poszczeg\u00f3lnych proces\u00f3w, wykorzystuj\u0105cego wirtualizacj\u0119 sprz\u0119tow\u0105. Kod projektu napisany jest w j\u0119zykach C i C++, a jego dystrybucja odbywa si\u0119 na licencji GPLv3 (dla tych, kt\u00f3rzy nie mog\u0105 spe\u0142ni\u0107 wymaga\u0144 GPLv3, dost\u0119pna jest komercyjna licencja).    <\/p>\n<p>TinyKVM jest zaprojektowany do izolowanego uruchamiania dowolnych program\u00f3w konsolowych dla systemu Linux z wydajno\u015bci\u0105 zbli\u017con\u0105 do standardowego wykonania. Koszty wywo\u0142ania ka\u017cdego systemowego wywo\u0142ania wynosz\u0105 oko\u0142o 2 mikrosekundy. Jako przyk\u0142ad zastosowania projektu wymienia si\u0119 dodatkow\u0105 izolacj\u0119 proces\u00f3w w systemach cache'owania i przetwarzania zapyta\u0144 webowych. TinyKVM zosta\u0142 opracowany w celu zast\u0105pienia emulatora libriscv, u\u017cywanego do izolacji przetwarzania ka\u017cdego zapytania webowego w platformie Varnish. Dodatkowo stworzono wersj\u0119 biblioteki libvmod, umo\u017cliwiaj\u0105c\u0105 wykonywanie modu\u0142\u00f3w dla Varnish z wykorzystaniem TinyKVM.    <center><img decoding=\"async\" alt=\"Wprowadzono TinyKVM do wirtualizacji na poziomie pojedynczych proces\u00f3w\" src=\"\/wp-content\/uploads\/2025\/03\/f561d37ddc61ac392508c8301906cae5.jpg\" style=\"display:block;margin: 0 auto;\" \/><img decoding=\"async\" alt=\"Wprowadzono TinyKVM do wirtualizacji na poziomie pojedynczych proces\u00f3w\" src=\"\/wp-content\/uploads\/2025\/03\/f55fbfe95625c87659ff985675213362.jpg\" style=\"display:block;margin: 0 auto;\" \/>  <\/center>    <\/p>\n<p>Podczas uruchamiania przy u\u017cyciu TinyKVM, kod maszynowy program\u00f3w wykonuje si\u0119 bez emuluj\u0105cych warstw na CPU i jest ograniczany przez API hyperwizora KVM, co pozwala wyeliminowa\u0107 koszty i osi\u0105gn\u0105\u0107 wydajno\u015b\u0107 zbli\u017con\u0105 do wykonania bez wirtualizacji. G\u0142\u00f3wne mo\u017cliwo\u015bci TinyKVM to:     <\/p>\n<ul>\n<li class=\"l\"> Ograniczenie maksymalnego czasu wykonania. Program mo\u017ce by\u0107 wymuszenie zatrzymany po up\u0142ywie limitu czasu, bez wywo\u0142ywania obs\u0142ugi sygna\u0142\u00f3w i w\u0105tk\u00f3w.\n<li class=\"l\"> Ograniczenie zu\u017cycia pami\u0119ci.\n<li class=\"l\"> Mo\u017cliwo\u015b\u0107 forkowania nieinicjalizowanych instancji <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/vps\/\"   title=\"maszyn wirtualnych\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2200\">maszyn wirtualnych<\/a> z jednego zainicjalizowanego egzemplarza izolowanego programu. Kopie maszyn wirtualnych s\u0105 tworzone w trybie copy-on-write, co znacznie oszcz\u0119dza pami\u0119\u0107, przechowuj\u0105c tylko jeden egzemplarz wsp\u00f3lnych danych.\n<li class=\"l\"> Procesy podrz\u0119dne mog\u0105 by\u0107 resetowane do wcze\u015bniejszego stanu (na przyk\u0142ad, podrz\u0119dny obs\u0142ugiwacz \u017c\u0105da\u0144 http mo\u017ce wr\u00f3ci\u0107 do pierwotnego stanu po przetworzeniu ka\u017cdego \u017c\u0105dania, bez potrzeby ponownego uruchamiania). Instancja izolowanego procesu mo\u017ce r\u00f3wnie\u017c by\u0107 zresetowana do stanu innej maszyny wirtualnej, a nie tej, z kt\u00f3rej zosta\u0142a odga\u0142\u0119ziona, ale w takim przypadku koszty b\u0119d\u0105 wy\u017csze, poniewa\u017c konieczna b\u0119dzie zmiana tabeli stron pami\u0119ci.\n<li class=\"l\"> Mo\u017cliwo\u015b\u0107 tworzenia statycznych stron pami\u0119ci podczas inicjalizacji, nadaj\u0105cych si\u0119 nawet do zaawansowanych program\u00f3w wykonawczych, takich jak w j\u0119zyku Go. W tym przypadku zmiany s\u0105 dozwolone tylko dla stron, kt\u00f3re s\u0105 w trybie copy-on-write.\n<li class=\"l\"> Wsparcie dla zdalnego debugowania przy u\u017cyciu GDB. Mo\u017cliwa jest debugowanie w locie z wznowieniem wykonania.    <\/ul>\n<p> \u015arodowisko go\u015bcinne TinyKVM tworzy zredukowane j\u0105dro, chronione przed zmianami, zbudowane z w\u0142\u0105czeniem ochrony stron pami\u0119ci i wykorzystuj\u0105ce SMAP (Supervisor Mode Access Prevention) oraz SMEP (Supervisor Mode Execution Prevention) dla dodatkowej izolacji mi\u0119dzy j\u0105drem a przestrzeni\u0105 u\u017cytkownika. TinyKVM u\u017cywa du\u017cych stron pami\u0119ci (hugepage) w celu zwi\u0119kszenia wydajno\u015bci. Wywo\u0142ania systemowe generowane przez programy s\u0105 przechwytywane przez emulator i przekazywane do \u015brodowiska gospodarza (op\u00f3\u017anienie przetwarzania i translacji emulowanego wywo\u0142ania wynosi oko\u0142o 2 mikrosekund). W samej <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/vps\/abuzoustojchivye-vps\/\"   title=\"maszynie wirtualnej\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4352\">maszynie wirtualnej<\/a> nie s\u0105 u\u017cywane \u017cadne sterowniki, wej\u015bcie\/wyj\u015bcie ani wirtualne urz\u0105dzenia.        <center><img decoding=\"async\" alt=\"Wprowadzono TinyKVM do wirtualizacji na poziomie pojedynczych proces\u00f3w\" src=\"\/wp-content\/uploads\/2025\/03\/4e61b85f98c4d3dfa4f85f67b6b51b56.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62898\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Varnish Software, \u0440\u0430\u0437\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0439 \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u0438 \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 TinyKVM, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0434\u043b\u044f \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 KVM. \u0426\u0435\u043b\u044c\u044e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0437\u0430\u044f\u0432\u043b\u0435\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0441\u0430\u043c\u043e\u0439 \u0431\u044b\u0441\u0442\u0440\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b sandbox-\u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0435\u0439 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u0443\u044e \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0430\u0445 C \u0438 \u0421++, \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv3 (\u0434\u043b\u044f \u043d\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":122614,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-122613","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Varnish Software, \u0440\u0430\u0437\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0434\u043b\u044f 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