{"id":5535,"date":"2025-12-25T08:26:05","date_gmt":"2025-12-24T23:26:05","guid":{"rendered":"https:\/\/qos.dev7.net\/wordpress\/?p=5535"},"modified":"2026-01-25T08:46:44","modified_gmt":"2026-01-24T23:46:44","slug":"ubuntu-24-04%e3%81%a7%e3%83%aa%e3%82%a2%e3%83%ab%e3%82%bf%e3%82%a4%e3%83%a0%e3%82%ab%e3%83%bc%e3%83%8d%e3%83%ab%e3%82%92%e8%a9%a6%e3%81%99%e3%80%82","status":"publish","type":"post","link":"https:\/\/qos.dev7.net\/wordpress\/2025\/12\/ubuntu-24-04%e3%81%a7%e3%83%aa%e3%82%a2%e3%83%ab%e3%82%bf%e3%82%a4%e3%83%a0%e3%82%ab%e3%83%bc%e3%83%8d%e3%83%ab%e3%82%92%e8%a9%a6%e3%81%99%e3%80%82.html","title":{"rendered":"Ubuntu 24.04\u3067\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\u3092\u8a66\u3059\u3002"},"content":{"rendered":"

\u300cUbuntu\u3067\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\uff08PREEMPT_RT\uff09\u3092\u52d5\u304b\u3059\u300d<\/p>\n

\u3072\u3068\u6614\u524d\u306a\u3089\u3001\u3053\u306e\u4e00\u8a00\u3060\u3051\u3067\u300c\u3042\u3001\u4eca\u65e5\u306f\u4e00\u65e5\u4e2d\u30ab\u30fc\u30cd\u30eb\u306e\u30d3\u30eb\u30c9\u3067\u7d42\u308f\u308b\u306a\u2026\u2026\u300d\u3068\u899a\u609f\u304c\u5fc5\u8981\u306a\u4f5c\u696d\u3067\u3057\u305f\u3002\u30bd\u30fc\u30b9\u3092\u62fe\u3063\u3066\u304d\u3066\u3001\u30d1\u30c3\u30c1\u3092\u5f53\u3066\u3066\u3001.config\u3068\u683c\u95d8\u3057\u3066\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u982d\u3092\u62b1\u3048\u308b\u3002\u305d\u3093\u306a\u6642\u4ee3\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u3067\u3082\u3001\u6642\u4ee3\u306f\u5909\u308f\u3063\u305f\u3093\u3067\u3059\u306d\u3002 \u4eca\u306eUbuntu\uff08\u4eca\u56de\u306f24.04\uff09\u306a\u3089\u3001\u30b3\u30de\u30f3\u30c9\u6570\u56de\u53e9\u304f\u3060\u3051\u3067\u3001\u3042\u3063\u3055\u308a\u516c\u5f0f\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n

\u5c0e\u5165\u306f\u3044\u305f\u3063\u3066\u30b7\u30f3\u30d7\u30eb
\nUbuntu Pro\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u6a19\u6e96\u7684\u306a\u30ea\u30dd\u30b8\u30c8\u30ea\uff0824.04\u4ee5\u964d\u306a\u3089noble-updates\u306a\u3069\uff09\u304b\u3089\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u3057\u3066\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n

\u304b\u306a\u308a\u6614\u306b\u8cfc\u5165\u3057\u305fmacmini\u3092Ubuntu\u5316\u3057\u3066\u653e\u7f6e\u3057\u3066\u3044\u305f\u306e\u3067\u3001\u305d\u308c\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\u5316\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u624b\u9806\u306f\u2193\u3053\u308c\u3060\u3051\u3002<\/p>\n

\n$ sudo apt update\n$ sudo apt install linux-realtime\n<\/code><\/pre>\n
\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u5f8c\u3001\u518d\u8d77\u52d5\u3002<\/p>\n
\u304b\u306a\u308a\u6614\u306b\u8cfc\u5165\u3057\u305fmacmini\u3092Ubuntu\u5316\u3057\u305f\u7d50\u679c<\/p>\n
\n$ lsb_release -a\nNo LSB modules are available.\nDistributor ID: Ubuntu\nDescription:    Ubuntu 24.04.2 LTS\nRelease:        24.04\nCodename:       noble\n\n$ uname -a\nLinux macmini 6.8.1-1015-realtime #16-Ubuntu SMP PREEMPT_RT Wed Jan 15 21:03:54 UTC 2025 x86_64 x86_64 x86_64 GNU\/Linux\n<\/code><\/pre>\n
\n\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\u306e\u52d5\u4f5c\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3068\u30b3\u30f3\u30d1\u30a4\u30eb<\/p>\n
\n\/\/ rt_test.c\n#include <stdio.h>\n#include <time.h>\n#include <sched.h>\n\nint main() {\n    struct sched_param param = {.sched_priority = 50};\n    sched_setscheduler(0, SCHED_FIFO, &param);\n\n    struct timespec next;\n    clock_gettime(CLOCK_MONOTONIC, &next);\n\n    printf("\u6642\u523b             \u5468\u671f\u304b\u3089\u306e\u8aa4\u5dee(\u03bcs)\\n");\n    printf("----------------------------------\\n");\n\n    while (1) {\n        next.tv_sec += 1;\n\n        clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &next, NULL);\n\n        struct timespec now;\n        clock_gettime(CLOCK_MONOTONIC, &now);\n        \n        long jitter = (now.tv_nsec - next.tv_nsec) \/ 1000;\n        \n        time_t t = time(NULL);\n        struct tm *l = localtime(&t);\n        printf("%02d:%02d:%02d         %+ld \u03bcs\\n", \n               l->tm_hour, l->tm_min, l->tm_sec, jitter);\n    }\n    return 0;\n}\n<\/code><\/pre>\n
\n$ cc rt_test.c -o rt_test\n<\/code><\/pre>\n
\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\u3067\u306e\u5b9f\u884c\u7d50\u679c<\/p>\n
\n$ sudo .\/rt_test\n\u6642\u523b             \u5468\u671f\u304b\u3089\u306e\u8aa4\u5dee(\u03bcs)\n----------------------------------\n21:07:28         +69 \u03bcs\n21:07:29         +70 \u03bcs\n21:07:30         +73 \u03bcs\n21:07:31         +68 \u03bcs\n21:07:32         +70 \u03bcs\n21:07:33         +70 \u03bcs\n21:07:34         +49 \u03bcs\n21:07:35         +70 \u03bcs\n21:07:36         +73 \u03bcs\n21:07:37         +72 \u03bcs\n\n<\/code><\/pre>\n
\u666e\u901a\u306e\u30ab\u30fc\u30cd\u30eb\u3067\u306e\u5b9f\u884c\u7d50\u679c<\/p>\n
\n$ sudo .\/rt_test\n\u6642\u523b             \u5468\u671f\u304b\u3089\u306e\u8aa4\u5dee(\u03bcs)\n----------------------------------\n21:07:28         +285 \u03bcs\n21:07:29         +296 \u03bcs\n21:07:30         +291 \u03bcs\n21:07:31         +217 \u03bcs\n21:07:32         +301 \u03bcs\n21:07:33         +237 \u03bcs\n21:07:34         +200 \u03bcs\n21:07:35         +336 \u03bcs\n21:07:36         +298 \u03bcs\n21:07:37         +248 \u03bcs\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u300cUbuntu\u3067\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ab\u30fc\u30cd\u30eb\uff08PREEMPT_RT\uff09\u3092\u52d5\u304b\u3059\u300d \u3072\u3068\u6614\u524d\u306a\u3089\u3001\u3053\u306e\u4e00\u8a00\u3060\u3051\u3067\u300c\u3042\u3001\u4eca\u65e5\u306f\u4e00\u65e5\u4e2d\u30ab\u30fc\u30cd\u30eb\u306e\u30d3\u30eb\u30c9\u3067\u7d42\u308f\u308b\u306a\u2026\u2026\u300d\u3068\u899a\u609f\u304c\u5fc5\u8981\u306a\u4f5c\u696d\u3067\u3057\u305f\u3002\u30bd\u30fc\u30b9\u3092\u62fe\u3063\u3066\u304d\u3066\u3001\u30d1\u30c3\u30c1\u3092\u5f53\u3066\u3066\u3001.con … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[23,141],"class_list":["post-5535","post","type-post","status-publish","format-standard","hentry","category-5","tag-linux","tag-ubuntu"],"_links":{"self":[{"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/posts\/5535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/comments?post=5535"}],"version-history":[{"count":11,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/posts\/5535\/revisions"}],"predecessor-version":[{"id":5612,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/posts\/5535\/revisions\/5612"}],"wp:attachment":[{"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/media?parent=5535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/categories?post=5535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qos.dev7.net\/wordpress\/wp-json\/wp\/v2\/tags?post=5535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}