{"id":104669,"date":"2022-07-18T21:36:39","date_gmt":"2022-07-18T19:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/eksperiment-po-povysheniyu-effektivnosti-raboty-utility-cat"},"modified":"2022-07-18T21:36:39","modified_gmt":"2022-07-18T19:36:39","slug":"eksperiment-po-povysheniyu-effektivnosti-raboty-utility-cat","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/eksperiment-po-povysheniyu-effektivnosti-raboty-utility-cat","title":{"rendered":"Experiment zur Effizienzsteigerung des Tools cat","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ariadne Conill, die Entwicklerin des Musikplayers Audacious, Initiatorin des IRCv3-Protokolls und Teamleiterin f\u00fcr die Sicherheitsma\u00dfnahmen von Alpine Linux, hat untersucht, wie die Leistung des Tools cat, das die Ausgabe eines oder mehrerer Dateien an den Standardausgabestrom vornimmt, optimiert werden kann. Zwei Optimierungsans\u00e4tze zur Leistungssteigerung von cat in Linux wurden vorgeschlagen, die auf den Systemaufrufen sendfile und splice basieren, um Daten direkt zwischen Dateideskriptoren auf Kernel-Ebene ohne Kontextwechsel in den Benutzerraum zu kopieren. <\/p>\n

Die grundlegende Implementierung, die traditionelle Lese- und Schreibaufrufe verwendet, was zu einem Kontextwechsel f\u00fchrt, zeigte beim Kopieren einer 4 GB gro\u00dfen Datei aus tmpfs eine Leistung von 3,6 GB\/s. Die Variante auf Basis von sendfile erm\u00f6glichte eine Leistungssteigerung auf 6,4 GB\/s, w\u00e4hrend die splice-basierte Variante sogar 11,6 GB\/s erreichte, also mehr als dreimal schneller war als die urspr\u00fcngliche Variante.
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0410\u0440\u0438\u0430\u0434\u043d\u0430 \u041a\u043e\u043d\u0438\u043b\u043b (Ariadne Conill), \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c \u043c\u0443\u0437\u044b\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0438\u0433\u0440\u044b\u0432\u0430\u0442\u0435\u043b\u044f Audacious, \u0438\u043d\u0438\u0446\u0438\u0430\u0442\u043e\u0440 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 IRCv3 \u0438 \u043b\u0438\u0434\u0435\u0440 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u043f\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 Alpine Linux, \u043f\u0440\u043e\u0432\u0435\u043b\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u043e\u0436\u043d\u043e \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0443\u0442\u0438\u043b\u0438\u0442\u0443 cat, \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u044e\u0449\u0443\u044e \u0432\u044b\u0432\u043e\u0434 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 \u0432\u044b\u0445\u043e\u0434\u043d\u043e\u0439 \u043f\u043e\u0442\u043e\u043a \u043e\u0434\u043d\u043e\u0433\u043e \u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0444\u0430\u0439\u043b\u043e\u0432. \u0414\u043b\u044f \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 cat \u0432 Linux \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0434\u0432\u0430 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0439, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0432\u044b\u0437\u043e\u0432\u043e\u0432 sendfile \u0438 splice […]<\/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-104669","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Experiment zur Effizienzsteigerung des cat-Dienstprogramms | ProHoster","description":"Ariadne Conill, die Sch\u00f6pferin des Musikplayers Audacious, Initiatorin der Entwicklung des Protokolls IRCv3 und Sicherheitsleiterin des Alpine Linux-Teams, untersuchte, wie die cat-Dienstprogramm, das mehrere Dateien an den Standardausgabestrom ausgibt, optimiert werden kann. Zur Verbesserung der Leistung von cat in Linux wurden zwei Optimierungsans\u00e4tze vorgeschlagen, die auf den Systemaufrufen sendfile und splice basieren.","canonical_url":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/eksperiment-po-povysheniyu-effektivnosti-raboty-utility-cat","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"de_DE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442 \u043f\u043e \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044e 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\u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u043e\u0436\u043d\u043e \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0443\u0442\u0438\u043b\u0438\u0442\u0443 cat, \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u044e\u0449\u0443\u044e \u0432\u044b\u0432\u043e\u0434 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 \u0432\u044b\u0445\u043e\u0434\u043d\u043e\u0439 \u043f\u043e\u0442\u043e\u043a \u043e\u0434\u043d\u043e\u0433\u043e \u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0444\u0430\u0439\u043b\u043e\u0432. \u0414\u043b\u044f \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 cat \u0432 Linux \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0434\u0432\u0430 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