Date: Thu, 15 Jan 2015 17:35:41 +0300 From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: Alexey Dokuchaev <danfe@FreeBSD.org>, Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Warner Losh <imp@FreeBSD.org> Subject: Re: svn commit: r277204 - head/sys/amd64/conf Message-ID: <54B7D03D.7040004@FreeBSD.org> In-Reply-To: <20150115140842.GA10593@FreeBSD.org> References: <201501150042.t0F0g7Um018059@svn.freebsd.org> <20150115132303.GA245@zxy.spb.ru> <20150115134446.GA92636@FreeBSD.org> <20150115135342.GD3698@zxy.spb.ru> <20150115140842.GA10593@FreeBSD.org>
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On 15.01.2015 17:08, Alexey Dokuchaev wrote: >> reading large monolitic kernel is slow too. > > But not nearly as slow as loading 50-60 modules at boot time (on my stable/8 > I have 59 right now). When you read one big file *once* you don't have to > worry about caching reads. With everything moved to modules, loader does a > lot of superfluous disk access, and to remedy this we need smart(er) caching > implementation. Did you try on recent FreeBSD versions? E.g. stable/9 after r243243, or just /boot/loader from head/ ? -- WBR, Andrey V. Elsukov
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