{"id":25257,"date":"2024-06-03T11:45:57","date_gmt":"2024-06-03T02:45:57","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25257"},"modified":"2024-06-03T11:45:57","modified_gmt":"2024-06-03T02:45:57","slug":"%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e4%b8%8d%e5%ae%89%e5%ae%9a-2-%e6%9c%ac%e4%bd%93%e3%81%8b%e3%82%82","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25257","title":{"rendered":"\u30b5\u30fc\u30d0\u30fc\u4e0d\u5b89\u5b9a (2) \u672c\u4f53\u304b\u3082"},"content":{"rendered":"\n

どうも，サーバーの不安定の原因は，USBまわり<\/a>というところだけは正解のようですが，USB接続のSSDでもUSB HUBでもなさそうです．<\/p>\n\n\n\n

本体を予備のRaspberry Pi 4 Model B (RPi4)にしました．違いは本来のサーバーはRAM 8GBのところ，予備機は4GBというところです．<\/p>\n\n\n

\n
\"\"
予備機: Raspberry Pi 4 Model B RAM 4GB<\/figcaption><\/figure>\n<\/div>\n\n\n

SSDのまるまるコピーなどといった負荷をかけながら動かしていて，起動から5時間経過しましたが，今のところ正常のようです．<\/p>\n\n\n\n

また8GBの方もSDカードを入れてVLCで監視カメラのモニターをさせています．USBは使わない状態です．こちらも同じく5時間安定して動いています．<\/p>\n\n\n\n

ということで，RPi4のハードのUSBまわりの故障のように思います．<\/p>\n\n\n\n

ちなみに，GUIなしのサーバー用途でRAMは4GBもあれば十分かと思いましたが，そうでもなくて，rsyncによるディスクのまるまるコピーのようなバッファを多く使うタスクを実行していると，kswapd0が大汗をかく場面が多く，その場合zramといえどもhttpdのレスポンスはかなり悪くなります．<\/p>\n\n\n\n

RPi4 8GBとなるとRPi5に価格が近くなるので迷います．<\/p>\n","protected":false},"excerpt":{"rendered":"

\u3069\u3046\u3082\uff0c\u30b5\u30fc\u30d0\u30fc\u306e\u4e0d\u5b89\u5b9a\u306e\u539f\u56e0\u306f\uff0cUSB\u307e\u308f\u308a\u3068\u3044\u3046\u3068\u3053\u308d\u3060\u3051\u306f\u6b63\u89e3\u306e\u3088\u3046\u3067\u3059\u304c\uff0cUSB\u63a5\u7d9a\u306eSSD\u3067\u3082USB HUB\u3067\u3082\u306a\u3055\u305d\u3046\u3067\u3059\uff0e \u672c\u4f53\u3092\u4e88\u5099\u306eRaspberry Pi 4 Model B (RPi4)\u306b\u3057\u307e\u3057\u305f\uff0e\u9055\u3044\u306f\u672c\u6765\u306e\u30b5\u30fc\u30d0\u30fc\u306fRAM 8GB\u306e\u3068\u3053\u308d\uff0c\u4e88\u5099\u6a5f\u306f4GB\u3068\u3044\u3046\u3068\u3053\u308d\u3067\u3059\uff0e SSD\u306e\u307e\u308b\u307e\u308b\u30b3\u30d4\u30fc\u306a\u3069\u3068\u3044\u3063\u305f\u8ca0\u8377\u3092\u304b\u3051\u306a\u304c\u3089\u52d5\u304b\u3057\u3066\u3044\u3066\uff0c\u8d77\u52d5\u304b\u30895\u6642\u9593\u7d4c\u904e\u3057\u307e\u3057\u305f\u304c\uff0c\u4eca\u306e\u3068\u3053\u308d\u6b63\u5e38\u306e\u3088\u3046\u3067\u3059\uff0e \u307e\u305f8GB\u306e\u65b9\u3082SD\u30ab\u30fc\u30c9\u3092\u5165\u308c\u3066VLC\u3067\u76e3\u8996\u30ab\u30e1\u30e9\u306e\u30e2\u30cb\u30bf\u30fc\u3092\u3055\u305b\u3066\u3044\u307e\u3059\uff0eUSB\u306f\u4f7f\u308f\u306a\u3044\u72b6\u614b\u3067\u3059\uff0e\u3053\u3061\u3089\u3082\u540c\u3058\u304f5\u6642\u9593\u5b89\u5b9a\u3057\u3066\u52d5\u3044\u3066\u3044\u307e\u3059\uff0e \u3068\u3044\u3046\u3053\u3068\u3067\uff0cRPi4\u306e\u30cf\u30fc\u30c9\u306eUSB\u307e\u308f\u308a\u306e\u6545\u969c\u306e\u3088\u3046\u306b\u601d\u3044\u307e\u3059\uff0e \u3061\u306a\u307f\u306b\uff0cGUI\u306a\u3057\u306e\u30b5\u30fc\u30d0\u30fc\u7528\u9014\u3067RAM\u306f4GB\u3082\u3042\u308c\u3070\u5341\u5206\u304b\u3068\u601d\u3044\u307e\u3057\u305f\u304c\uff0c\u305d\u3046\u3067\u3082\u306a\u304f\u3066\uff0crsync\u306b\u3088\u308b\u30c7\u30a3\u30b9\u30af\u306e\u307e\u308b\u307e\u308b\u30b3\u30d4\u30fc\u306e\u3088\u3046\u306a\u30d0\u30c3\u30d5\u30a1\u3092\u591a\u304f\u4f7f\u3046\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u3068\uff0ckswapd0\u304c\u5927\u6c57\u3092\u304b\u304f\u5834\u9762\u304c\u591a\u304f\uff0c\u305d\u306e\u5834\u5408zram\u3068\u3044\u3048\u3069\u3082httpd\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u304b\u306a\u308a\u60aa\u304f\u306a\u308a\u307e\u3059\uff0e RPi4 8GB\u3068\u306a\u308b\u3068RPi5\u306b\u4fa1\u683c\u304c\u8fd1\u304f\u306a\u308b\u306e\u3067\u8ff7\u3044\u307e\u3059\uff0e<\/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":[27,7],"tags":[],"class_list":["post-25257","post","type-post","status-publish","format-standard","hentry","category-rasapberry-pi","category-slackware"],"publishpress_future_action":{"enabled":false,"date":"2026-05-04 00:52:10","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\/25257","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=25257"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/25257\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}