{"id":3084,"date":"2025-09-18T23:35:27","date_gmt":"2025-09-18T14:35:27","guid":{"rendered":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/?p=3084"},"modified":"2025-12-02T00:13:02","modified_gmt":"2025-12-01T15:13:02","slug":"linux-usb%e7%b5%8c%e7%94%b1%e3%81%ae%e8%bb%a2%e9%80%81%e3%81%8c%e7%95%b0%e5%b8%b8%e3%81%ab%e9%81%85%e3%81%84%e5%95%8f%e9%a1%8c","status":"publish","type":"post","link":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/?p=3084","title":{"rendered":"[linux]USB\u7d4c\u7531\u306e\u8ee2\u9001\u304c\u7570\u5e38\u306b\u9045\u3044\u554f\u984c"},"content":{"rendered":"\n<p>\u30d3\u30c3\u30b0\uff08\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\uff09\u30c7\u30fc\u30bf\u3092\u5bb9\u6613\u306b\u624b\u306b\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3068\u3053\u308d\u3067\u554f\u984c\u3068\u306a\u308b\u306e\u304c\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306e\u554f\u984c\u3002\u7279\u306bnanopore\u306epod5\u30c7\u30fc\u30bf\u306f\u6570100Gb\u306f\u8d85\u3048\u308b\u306e\u304c\u5f53\u305f\u308a\u524d\u306a\u306e\u3067\u3001\u3053\u308c\u3092\u30d9\u30fc\u30b9\u30b3\u30fc\u30eb\u7528\u306ePC\u306b\u9001\u308b\u306e\u306bLAN\u3067\u306f\u9593\u306b\u5408\u308f\u306a\u3044\u3002\u305d\u3053\u3067USB3.2 Gen2 10Gbps\u5bfe\u5fdc\u306e\u30b1\u30fc\u30b9\uff08<a href=\"https:\/\/amzn.to\/3VVMHmx\" data-type=\"link\" data-id=\"https:\/\/amzn.to\/3VVMHmx\">ORICO TCM2-SV<\/a>)\u306b2TB\u306eNVMe\u3092\u3044\u308c\u3066\u4f7f\u3063\u3066\u3044\u308b\u306e\u304c\u3001\u8ee2\u9001\u306f\u65e9\u3044\u306e\u306b\u3001\u8aad\u307f\u51fa\u3057\u306f\u5287\u7684\u306b\u9045\u3044 (Gigabit LAN\u3068\u540c\u7a0b\u5ea6\uff09\u3002\u3069\u3046\u3082\u304a\u304b\u3057\u3044\u306e\u3067\u8abf\u3079\u305f\u3089\u3001\u4e0b\u8a18\u306e\u60c5\u5831\u304c\u3002\u3069\u3046\u3082Ubuntu\u7279\u6709\u306e\u75c7\u72b6\u3089\u3057\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-reddit wp-block-embed-reddit\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"reddit-embed-bq\" ><a href=\"https:\/\/www.reddit.com\/r\/Ubuntu\/comments\/lsseqw\/comment\/hmeccuu\/\">Comment<\/a><br> by<a href=\"https:\/\/www.reddit.com\/user\/usuario1986\/\">u\/usuario1986<\/a> from discussion<a href=\"https:\/\/www.reddit.com\/r\/Ubuntu\/comments\/lsseqw\/super_slow_transfer_over_usb\/\"><\/a><br> in<a href=\"https:\/\/www.reddit.com\/r\/Ubuntu\/\">Ubuntu<\/a><\/blockquote><script async src=\"https:\/\/embed.reddit.com\/widgets.js\" charset=\"UTF-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p>\u3053\u306e\u30b3\u30de\u30f3\u30c9\u901a\u308a\u306b\u3084\u308b\u3068permission\u306e\u554f\u984c\u304c\u3042\u308b\u306e\u3067\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u3059\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo $((16 * 1024 * 1024)) | sudo tee \/proc\/sys\/vm\/dirty_background_bytes\necho $((48 * 1024 * 1024)) | sudo tee \/proc\/sys\/vm\/dirty_bytes<\/code><\/pre>\n\n\n\n<p>\u307e\u305f\u3053\u308c\u3092\u6c38\u7d9a\u5316\u3059\u308b\u5834\u5408\u306f\u3001\/etc\/sysctl.conf\u306b\u3001\u4e0b\u8a18\u3092\u8ffd\u8a18\u3059\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vm.dirty_background_bytes = 16777216\nvm.dirty_bytes = 50331648<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d3\u30c3\u30b0\uff08\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\uff09\u30c7\u30fc\u30bf\u3092\u5bb9\u6613\u306b\u624b\u306b<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_locale":"ja","_original_post":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/?p=3084","footnotes":""},"categories":[7],"tags":[],"class_list":["post-3084","post","type-post","status-publish","format-standard","hentry","category-protocol","ja"],"_links":{"self":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/posts\/3084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3084"}],"version-history":[{"count":2,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/posts\/3084\/revisions"}],"predecessor-version":[{"id":3140,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=\/wp\/v2\/posts\/3084\/revisions\/3140"}],"wp:attachment":[{"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/home.hiroshima-u.ac.jp\/~tigawa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}