{"id":6575,"date":"2024-06-06T11:03:24","date_gmt":"2024-06-06T11:03:24","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/direct-memory-access-dma\/"},"modified":"2024-06-06T11:03:24","modified_gmt":"2024-06-06T11:03:24","slug":"beinn-minnisadgangur-dma","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/is\/dictionary\/direct-memory-access-dma\/","title":{"rendered":"Bein minnisa\u00f0gangur DMA"},"content":{"rendered":"<h1>Bein minnisa\u00f0gangur (DMA)<\/h1>\n<p>Bein minnisa\u00f0gangur (DMA) er v\u00e9lb\u00fana\u00f0ar-eiginleiki \u00ed t\u00f6lvu sem gerir kleift <a href=\"https:\/\/thecodest.co\/is\/blog\/app-data-collection-security-risks-value-and-types-explored\/\">g\u00f6gn<\/a> til a\u00f0 flytja g\u00f6gn milli t\u00e6kja og minnis \u00e1n afskipta \u00f6rgj\u00f6rvans. DMA gerir t\u00e6kjum eins og hlj\u00f3\u00f0kortum, netkortum og har\u00f0diskum kleift a\u00f0 flytja g\u00f6gn beint til og fr\u00e1 minni, sem losar \u00f6rgj\u00f6rvann til a\u00f0 sinna \u00f6\u00f0rum verkefnum.<\/p>\n<p>DMA er s\u00e9rstaklega gagnlegt vi\u00f0 flutning mikils gagnamagns, \u00fear sem \u00fea\u00f0 getur verulega dregi\u00f0 \u00far vinnslu\u00e1lagi \u00f6rgj\u00f6rvans sem \u00fearf til flutningsins. \u00deetta getur leitt til b\u00e6ttrar kerfisframmist\u00f6\u00f0u og minni t\u00f6f.<\/p>\n<p>\u00dea\u00f0 eru tv\u00e6r tegundir af DMA: bus mastering DMA og \u00feri\u00f0ja a\u00f0ila DMA. Bus mastering DMA gerir t\u00e6ki kleift a\u00f0 taka stj\u00f3rn \u00e1 kerfisb\u00fasi og framkv\u00e6ma flutninga beint, \u00e1 me\u00f0an \u00feri\u00f0ja a\u00f0ila DMA felur \u00ed s\u00e9r s\u00e9rh\u00e6f\u00f0an DMA-stj\u00f3ra sem s\u00e9r um flutninga fyrir h\u00f6nd t\u00e6kja.<\/p>\n<p>\u00de\u00f3 a\u00f0 DMA geti verulega b\u00e6tt kerfisframmist\u00f6\u00f0u getur \u00fea\u00f0 einnig skapa\u00f0 \u00f6ryggis\u00f3gnir. Illgjarn hugb\u00fana\u00f0ur getur hugsanlega misnota\u00f0 DMA til a\u00f0 n\u00e1lgast vi\u00f0kv\u00e6m g\u00f6gn \u00ed minni, sem lei\u00f0ir til gagnaleka e\u00f0a annarra \u00f6ryggisatvika. \u00deess vegna er mikilv\u00e6gt a\u00f0 innlei\u00f0a vi\u00f0eigandi \u00f6ryggisr\u00e1\u00f0stafanir, svo sem DMA-vernd, til a\u00f0 draga \u00far \u00feessum \u00e1h\u00e6ttu.<\/p>\n<p>\u00cd stuttu m\u00e1li er DMA v\u00e9lb\u00fana\u00f0arleg eiginleiki sem gerir t\u00e6kjum kleift a\u00f0 flytja g\u00f6gn beint til og fr\u00e1 minni \u00e1n afskipta \u00f6rgj\u00f6rva. Hann getur b\u00e6tt kerfisframmist\u00f6\u00f0u verulega, en lei\u00f0ir einnig til \u00f6ryggis\u00e1h\u00e6ttu sem \u00fearf a\u00f0 taka \u00e1.<\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r\u00f0u um beinan minnisa\u00f0gang (DMA) og hvernig hann getur b\u00e6tt kerfisframmist\u00f6\u00f0u me\u00f0 \u00fev\u00ed a\u00f0 leyfa t\u00e6kjum a\u00f0 flytja g\u00f6gn beint inn \u00ed og \u00far minni. #DMA #kerfisframmista\u00f0a<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6575","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Direct Memory Access Dma - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about Direct Memory Access (DMA) and how it can improve system performance by allowing devices to transfer data directly to and from memory. #DMA #systemperformance\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/is\/ordabok\/beinn-minnisadgangur-dma\/\" \/>\n<meta property=\"og:locale\" content=\"is_IS\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Direct Memory Access Dma\" \/>\n<meta property=\"og:description\" content=\"Learn about Direct Memory Access (DMA) and how it can improve system performance by allowing devices to transfer data directly to and from memory. #DMA #systemperformance\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thecodest.co\/is\/ordabok\/beinn-minnisadgangur-dma\/\" \/>\n<meta property=\"og:site_name\" content=\"The Codest\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thecodest.co\/app\/uploads\/2024\/06\/cover-image.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/direct-memory-access-dma\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/direct-memory-access-dma\\\/\",\"name\":\"Direct Memory Access Dma - 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