Slackware ARM 32bit版 for Raspberry Pi 4 Model B (SARPi4)の話です．<\/p>\n\n\n\n
Raspberry Pi 4 Model B (RPi4) 4GB RAMでGUIなしのサーバーを仕立ててますが，起動してから半日くらいでメモリーが使い果たされてSWAP領域を数百MB使います．ZRAM<\/a>を導入してからはずいぶんレスポンスが良くなりましたが，SWAPを使わないに越したことはないです．<\/p>\n\n\n\n 当該サーバーではhttpd (Apache 2.4.x)の4つのthreadがそれぞれ5%前後のメモリーを使います．多めに見積もって6%として，<\/p>\n\n\n\n ですから，メモリーを食い尽くすはずはないのですが，半日でSWAPを必要とします．<\/p>\n\n\n\n その原因についてslabがなんだかんだという記事を見て，そういうことなのかなと思いつつ<\/a>も，関連記事のおまじないを試しても何の効果もないので納得いきませんでした．<\/p>\n\n\n\n 昨日，Kernelを5.19.15-v7l-sarpi4にupdateして，まる一日が経過しましたが，まだ1.9GB主記憶に空きがあり，SWAPを必要とする気配は全くありません．<\/p>\n\n\n\n ということで，Kernelのバグだったんじゃないかと思います（個人の感想です）．<\/p>\n\n\n\n Slackware ARM 32bit\u7248 for Raspberry Pi 4 Model B (SARPi4)\u306e\u8a71\u3067\u3059\uff0e Raspberry Pi 4 Model B (RPi4) 4GB RAM\u3067GUI\u306a\u3057\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u4ed5\u7acb\u3066\u3066\u307e\u3059\u304c\uff0c\u8d77\u52d5\u3057\u3066\u304b\u3089\u534a\u65e5\u304f\u3089\u3044\u3067\u30e1\u30e2\u30ea\u30fc\u304c\u4f7f\u3044\u679c\u305f\u3055\u308c\u3066SWAP\u9818\u57df\u3092\u6570\u767eMB\u4f7f\u3044\u307e\u3059\uff0eZRAM\u3092\u5c0e\u5165\u3057\u3066\u304b\u3089\u306f\u305a\u3044\u3076\u3093\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u826f\u304f\u306a\u308a\u307e\u3057\u305f\u304c\uff0cSWAP\u3092\u4f7f\u308f\u306a\u3044\u306b\u8d8a\u3057\u305f\u3053\u3068\u306f\u306a\u3044\u3067\u3059\uff0e \u5f53\u8a72\u30b5\u30fc\u30d0\u30fc\u3067\u306fhttpd (Apache 2.4.x)\u306e4\u3064\u306ethread\u304c\u305d\u308c\u305e\u308c5%\u524d\u5f8c\u306e\u30e1\u30e2\u30ea\u30fc\u3092\u4f7f\u3044\u307e\u3059\uff0e\u591a\u3081\u306b\u898b\u7a4d\u3082\u3063\u30666%\u3068\u3057\u3066\uff0c 4GB x 0.06 x 4 \u2245 1GB \u3067\u3059\u304b\u3089\uff0c\u30e1\u30e2\u30ea\u30fc\u3092\u98df\u3044\u5c3d\u304f\u3059\u306f\u305a\u306f\u306a\u3044\u306e\u3067\u3059\u304c\uff0c\u534a\u65e5\u3067SWAP\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\uff0e \u305d\u306e\u539f\u56e0\u306b\u3064\u3044\u3066slab\u304c\u306a\u3093\u3060\u304b\u3093\u3060\u3068\u3044\u3046\u8a18\u4e8b\u3092\u898b\u3066\uff0c\u305d\u3046\u3044\u3046\u3053\u3068\u306a\u306e\u304b\u306a\u3068\u601d\u3044\u3064\u3064\u3082\uff0c\u95a2\u9023\u8a18\u4e8b\u306e\u304a\u307e\u3058\u306a\u3044\u3092\u8a66\u3057\u3066\u3082\u4f55\u306e\u52b9\u679c\u3082\u306a\u3044\u306e\u3067\u7d0d\u5f97\u3044\u304d\u307e\u305b\u3093\u3067\u3057\u305f\uff0e \u6628\u65e5\uff0cKernel\u30925.19.15-v7l-sarpi4\u306bupdate\u3057\u3066\uff0c\u307e\u308b\u4e00\u65e5\u304c\u7d4c\u904e\u3057\u307e\u3057\u305f\u304c\uff0c\u307e\u30601.9GB\u4e3b\u8a18\u61b6\u306b\u7a7a\u304d\u304c\u3042\u308a\uff0cSWAP\u3092\u5fc5\u8981\u3068\u3059\u308b\u6c17\u914d\u306f\u5168\u304f\u3042\u308a\u307e\u305b\u3093\uff0e \u3068\u3044\u3046\u3053\u3068\u3067\uff0cKernel\u306e\u30d0\u30b0\u3060\u3063\u305f\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\uff08\u500b\u4eba\u306e\u611f\u60f3\u3067\u3059\uff09\uff0e \u300chttps\u306enss\u304cslab\u3092\u5927\u91cf\u306b\u4f7f\u3046\u300d\u5f53\u30b5\u30a4\u30c8\u5185\u306e\u95a2\u9023\u8a18\u4e8b<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","footnotes":""},"categories":[8,27],"tags":[],"class_list":["post-18595","post","type-post","status-publish","format-standard","hentry","category-linux","category-rasapberry-pi"],"publishpress_future_action":{"enabled":false,"date":"2026-04-18 08:54:36","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/18595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18595"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/18595\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}4GB x 0.06 x 4 \u2245 1GB<\/pre>\n\n\n\n
「httpsのnssがslabを大量に使う」当サイト内の関連記事<\/h3>\n\n\n\n
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