{"id":104171,"date":"2022-05-27T15:36:55","date_gmt":"2022-05-27T13:36:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/razrabotchiki-ubuntu-pristupili-k-resheniyu-problem-s-medlennym-zapuskom-snap-paketa-firefox"},"modified":"2022-05-27T15:36:55","modified_gmt":"2022-05-27T13:36:55","slug":"razrabotchiki-ubuntu-pristupili-k-resheniyu-problem-s-medlennym-zapuskom-snap-paketa-firefox","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/razrabotchiki-ubuntu-pristupili-k-resheniyu-problem-s-medlennym-zapuskom-snap-paketa-firefox","title":{"rendered":"V\u00fdvoj\u00e1\u0159i Ubuntu se za\u010dali zab\u00fdvat probl\u00e9my s pomal\u00fdm spou\u0161t\u011bn\u00edm snap bal\u00ed\u010dku Firefox.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spole\u010dnost Canonical zah\u00e1jila \u0159e\u0161en\u00ed probl\u00e9m\u016f s v\u00fdkonem snap bal\u00ed\u010dku Firefox, kter\u00fd byl ve v\u00fdchoz\u00edm nastaven\u00ed nab\u00eddnut v Ubuntu 22.04 m\u00edsto obvykl\u00e9ho deb bal\u00ed\u010dku. Hlavn\u00ed nespokojenost u\u017eivatel\u016f se t\u00fdk\u00e1 velmi pomal\u00e9ho spu\u0161t\u011bn\u00ed Firefoxu. Nap\u0159\u00edklad na notebooku Dell XPS 13 trv\u00e1 prvotn\u00ed spu\u0161t\u011bn\u00ed Firefoxu po instalaci 7,6 sekundy, na notebooku Thinkpad X240 \u2014 15 sekund, a na desce Raspberry Pi 400 \u2014 38 sekund. Opakovan\u00e1 spu\u0161t\u011bn\u00ed prob\u00edhaj\u00ed za 0,86, 1,39 a 8,11 sekundy v uveden\u00e9m po\u0159ad\u00ed.    <\/p>\n<p>B\u011bhem anal\u00fdzy probl\u00e9mu byly odhaleny 4 hlavn\u00ed p\u0159\u00ed\u010diny pomal\u00e9ho spu\u0161t\u011bn\u00ed, kter\u00fdm se bude v\u011bnovat hlavn\u00ed pozornost:    <\/p>\n<ul>\n<li class=\"l\"> Vysok\u00e9 n\u00e1klady na vyhled\u00e1v\u00e1n\u00ed soubor\u016f uvnit\u0159 zkomprimovan\u00e9ho obrazu squashfs, kter\u00e9 jsou zvl\u00e1\u0161\u0165 patrn\u00e9 na slab\u0161\u00edch syst\u00e9mech. Probl\u00e9m by m\u011bl b\u00fdt vy\u0159e\u0161en skupinovou organizac\u00ed obsahu, aby se minimalizovaly operace p\u0159esouv\u00e1n\u00ed b\u011bhem spu\u0161t\u011bn\u00ed.\n<li class=\"l\"> Na Raspberry Pi a syst\u00e9mech s GPU AMD se uk\u00e1zalo, \u017ee velk\u00e9 zpo\u017ed\u011bn\u00ed souvis\u00ed s selh\u00e1n\u00edm p\u0159i ur\u010dov\u00e1n\u00ed grafick\u00e9ho ovlada\u010de a p\u0159echodem na software pro vykreslov\u00e1n\u00ed s velmi pomalou kompilac\u00ed shader\u016f. Oprava pro \u0159e\u0161en\u00ed tohoto probl\u00e9mu ji\u017e byla p\u0159id\u00e1na do snapd.\n<li class=\"l\"> Mnoho \u010dasu bylo ztraceno p\u0159i kop\u00edrov\u00e1n\u00ed vestav\u011bn\u00fdch dopl\u0148k\u016f do u\u017eivatelsk\u00e9ho adres\u00e1\u0159e. Do snap bal\u00ed\u010dku bylo zabudov\u00e1no 98 jazykov\u00fdch bal\u00ed\u010dk\u016f, kter\u00e9 se v\u0161echny kop\u00edrovaly, bez ohledu na zvolen\u00fd jazyk.\n<li class=\"l\"> Zpo\u017ed\u011bn\u00ed tak\u00e9 nast\u00e1vala p\u0159i ur\u010dov\u00e1n\u00ed v\u0161ech dostupn\u00fdch p\u00edsem, t\u00e9mat ikon a konfigurac\u00ed p\u00edsem.    <\/ul>\n<p>P\u0159i spou\u0161t\u011bn\u00ed Firefoxu z snap byly tak\u00e9 pozorov\u00e1ny jednotliv\u00e9 probl\u00e9my s v\u00fdkonem b\u011bhem provozu, ale v\u00fdvoj\u00e1\u0159i Ubuntu ji\u017e p\u0159ipravili opravy, kter\u00e9 zlep\u0161uj\u00ed v\u00fdkon. Nap\u0159\u00edklad od verze Firefox 100.0 byly p\u0159i sestavov\u00e1n\u00ed zahrnuty optimalizace p\u0159i f\u00e1zi spojov\u00e1n\u00ed (LTO) a na z\u00e1klad\u011b v\u00fdsledk\u016f profilov\u00e1n\u00ed k\u00f3du (PGO). Pro \u0159e\u0161en\u00ed probl\u00e9m\u016f s v\u00fdm\u011bnou dat mezi Firefoxem a extern\u00edmi subsyst\u00e9my byl p\u0159ipraven nov\u00fd XDG Desktop Portal, jeho\u017e podpora je v sou\u010dasn\u00e9 f\u00e1zi revize pro za\u0159azen\u00ed do Firefoxu.       <\/p>\n<p>Jako d\u016fvody pro propagaci form\u00e1tu snap pro prohl\u00ed\u017ee\u010de se uv\u00e1d\u00ed snaha zjednodu\u0161it \u00fadr\u017ebu a unifikovat v\u00fdvoj pro r\u016fzn\u00e9 verze Ubuntu \u2014 bal\u00ed\u010dek deb vy\u017eaduje samostatnou \u00fadr\u017ebu pro v\u0161echny podporovan\u00e9 v\u011btve Ubuntu a odpov\u00eddaj\u00edc\u00ed sestaven\u00ed a testov\u00e1n\u00ed zohled\u0148uj\u00edc\u00ed r\u016fzn\u00e9 verze syst\u00e9mov\u00fdch komponent\u016f, zat\u00edmco bal\u00ed\u010dek snap m\u016f\u017ee b\u00fdt vytvo\u0159en najednou pro v\u0161echny v\u011btve Ubuntu. Nav\u00edc, nab\u00edzen\u00fd v Ubuntu snap bal\u00ed\u010dek s Firefoxem udr\u017euj\u00ed zam\u011bstnanci Mozilly, tj. je vytv\u00e1\u0159en p\u0159\u00edmo bez zprost\u0159edkovatel\u016f. Dod\u00e1vka ve form\u00e1tu snap tak\u00e9 umo\u017enila urychlit dod\u00e1n\u00ed nov\u00fdch verz\u00ed prohl\u00ed\u017ee\u010de u\u017eivatel\u016fm Ubuntu a poskytla mo\u017enost spou\u0161t\u011bt Firefox v izolovan\u00e9m prost\u0159ed\u00ed vytvo\u0159en\u00e9m pomoc\u00ed mechanismu AppArmor pro dodate\u010dnou ochranu zbytku syst\u00e9mu p\u0159ed zneu\u017eit\u00edm zranitelnost\u00ed v prohl\u00ed\u017ee\u010di.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57262\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Canonical \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b\u0430 \u043a \u0440\u0435\u0448\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e snap-\u043f\u0430\u043a\u0435\u0442\u0430 \u0441 Firefox, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u044b\u043b \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432 Ubuntu 22.04 \u0432\u043c\u0435\u0441\u0442\u043e \u043e\u0431\u044b\u0447\u043d\u043e\u0433\u043e deb-\u043f\u0430\u043a\u0435\u0442\u0430. \u041e\u0441\u043d\u043e\u0432\u043d\u043e\u0435 \u043d\u0435\u0434\u043e\u0432\u043e\u043b\u044c\u0441\u0442\u0432\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0441\u0432\u044f\u0437\u0430\u043d\u043e \u0441 \u043e\u0447\u0435\u043d\u044c \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u043c \u0437\u0430\u043f\u0443\u0441\u043a\u043e\u043c Firefox. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043d\u0430 \u043d\u043e\u0443\u0442\u0431\u0443\u043a\u0435 Dell XPS 13 \u043f\u0435\u0440\u0432\u044b\u0439 \u0437\u0430\u043f\u0443\u0441\u043a Firefox \u043f\u043e\u0441\u043b\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 7.6 \u0441\u0435\u043a\u0443\u043d\u0434, \u043d\u0430 \u043d\u043e\u0443\u0442\u0431\u0443\u043a\u0435 Thinkpad X240 &#8212; 15 \u0441\u0435\u043a\u0443\u043d\u0434, \u0430 \u043d\u0430 \u043f\u043b\u0430\u0442\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104171","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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