{"id":122644,"date":"2025-03-20T23:00:19","date_gmt":"2025-03-20T21:00:19","guid":{"rendered":"https:\/\/prohoster.info\/?p=122644"},"modified":"2025-03-20T23:00:19","modified_gmt":"2025-03-20T21:00:19","slug":"proizvoditelnost-ubuntu-paketa-jq-udalos-uvelichit-v-1-9-raza-putyom-peresborki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/news\/proizvoditelnost-ubuntu-paketa-jq-udalos-uvelichit-v-1-9-raza-putyom-peresborki","title":{"rendered":"De prestaties van het Ubuntu-pakket jq zijn met 1,9 keer verbeterd door middel van hercompilatie.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>De resultaten van de evaluatie van de impact op de prestaties van hercompilatie van pakketten voor Ubuntu met verschillende opties en implementaties van geheugenallocatiefuncties zijn gepubliceerd. De experimentator slaagde erin om de prestaties van het jq-pakket, een tool voor het verwerken van gegevens in JSON-indeling, met 90% (1,9 keer) te verhogen door een standaard hercompilatie van hetzelfde pakket met de broncode, zonder wijzigingen in de code zelf. De prestaties werden ge\u00ebvalueerd door de uitvoeringstijd van een typische filteropdracht op 500MB GeoJSON-gegevens te meten.    <\/p>\n<p>Resultaten van het experiment:  <\/p>\n<ul>\n<li class=\"l\"> De variant, opgebouwd met GCC uit dezelfde bronbestanden met standaardvlaggen, bleek 2-4% sneller dan het binaire Ubuntu-pakket.\n<li class=\"l\"> Het opnieuw bouwen in Clang 18 met optimalisatieniveau '-O3', inclusief optimalisatie tijdens het linken ('-flto') en het uitschakelen van debug-informatie ('-DNDEBUG'), leidde tot een versnelling van 20%.\n<li class=\"l\"> Het opnieuw bouwen met het geheugenverdeelsysteem TCMalloc (toevoegen '-L\/usr\/lib\/x86_64-linux-gnu -ltcmalloc_minimal' aan LDFLAGS) leidde tot een versnelling van 40%.\n<li class=\"l\"> Vervanging van malloc-functies door geheugenverdeelsystemen tcmalloc, jemalloc en mimalloc via 'LD_PRELOAD=\/usr\/lib\/x86_64-linux-gnu\/lib....so' leidde tot een prestatieverbetering van respectievelijk 27%, 29% en 44%. Bij het draaien met mimalloc, dat een versnelling van 44% vertoonde, werd de omgevingsvariabele 'MIMALLOC_LARGE_OS_PAGES=1' ingesteld.\n<li class=\"l\"> Hercompilatie van het pakket met mimalloc in LDFLAGS in plaats van linken via LD_PRELOAD leidde tot een versnelling van 90% in de testpassing. Een andere test voor de verwerking van 2,2 GB JSON-gegevens in 13.000 bestanden toonde ook een prestatieverbetering van ongeveer twee keer.          <\/ul>\n<p>Bron: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62912\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043e\u0446\u0435\u043d\u043a\u0438 \u0432\u043b\u0438\u044f\u043d\u0438\u044f \u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u0441\u0431\u043e\u0440\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0434\u043b\u044f Ubuntu \u0441 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u043c\u0438 \u043e\u043f\u0446\u0438\u044f\u043c\u0438 \u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438. \u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u0442\u043e\u0440\u0443 \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u043d\u0430 90% (\u0432 1.9 \u0440\u0430\u0437\u0430) \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u0430\u043a\u0435\u0442\u0430 jq \u0441 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0435\u043c \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 JSON, \u043f\u0443\u0442\u0451\u043c \u043e\u0431\u044b\u0447\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u0441\u0431\u043e\u0440\u043a\u0438 \u0438\u0437 \u0442\u043e\u0433\u043e \u0436\u0435 \u043f\u0430\u043a\u0435\u0442\u0430 \u0441 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u043c \u043a\u043e\u0434\u043e\u043c, \u0431\u0435\u0437 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u0441\u0430\u043c \u043a\u043e\u0434. \u041f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043e\u0446\u0435\u043d\u0438\u0432\u0430\u043b\u0430\u0441\u044c [&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-122644","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\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043e\u0446\u0435\u043d\u043a\u0438 \u0432\u043b\u0438\u044f\u043d\u0438\u044f \u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u0441\u0431\u043e\u0440\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0434\u043b\u044f Ubuntu \u0441 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