{"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/yohei-a/","version":"1.0","title":"Oracle Linux 6 on OracleVM \u3067\u306f gettimeofday \u304c vDSO \u3067\u306a\u3044","url":"https://yohei-a.hatenablog.jp/entry/20151215/1450178398","author_name":"yohei-a","published":"2015-12-15 20:19:58","image_url":null,"width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohei-a.hatenablog.jp%2Fentry%2F20151215%2F1450178398\" title=\"Oracle Linux 6 on OracleVM \u3067\u306f gettimeofday \u304c vDSO \u3067\u306a\u3044 - ablog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"gettimeofday(2) \u306f VDSO \u306b\u3088\u308a\u30e6\u30fc\u30b6\u30fc\u7a7a\u9593\u3067\u5b9f\u884c\u3055\u308c\u308b - ablog \u3068\u9055\u3063\u3066 Oracle Linux 6.7 on OracleVM 3.2 (Xen\u30d9\u30fc\u30b9) \u3060\u3068 strace \u3067 gettimeofday \u304c\u51fa\u308b\u3068\u3044\u3046\u8a71\u3092\u805e\u3044\u305f\u306e\u3067\u3001 strace \u306e\u30ed\u30b0\u3092\u898b\u3066\u307f\u307e\u3059\u3002Non Blocking I/O \u306e \u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb(io_submit/io_getevents) \u304c \u51fa\u3066\u3044\u308b\u3084\u3067 \u5f61(\uff9f)(\uff9f) \u2605LGWR\u30d7\u30ed\u30bb\u30b9\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u78ba\u8a8d cat lgwr_strace_async_true.log.5657 \uff1a gettimeofday({14482458\u2026","type":"rich","blog_title":"ablog","height":"190","categories":["Xen","Linux"],"blog_url":"https://yohei-a.hatenablog.jp/","provider_url":"https://hatena.blog"}