Date: Mon, 4 Oct 2021 14:39:26 +0100 From: Arthur Chance <freebsd@qeng-ho.org> To: FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Boot time improvements [Was: Re: boot/shutdown times] Message-ID: <6534df0f-e41e-5b6f-0dc3-32fb5357e415@qeng-ho.org> In-Reply-To: <0b6bde6f-a27b-134c-8671-f8e5784319ea@qeng-ho.org> References: <CABWFOjvr4c%2BEW9sVdvDsjAkRs-VXMZG2FiCoi4eB0i5MYMVTOg@mail.gmail.com> <bffa119e-fb97-2d44-222c-79cea2aad8c3@qeng-ho.org> <0b6bde6f-a27b-134c-8671-f8e5784319ea@qeng-ho.org>
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On 12/09/2021 14:02, Arthur Chance wrote: > On 12/09/2021 14:00, Arthur Chance wrote: >> On 12/09/2021 00:34, Brian Wood wrote: >>> I haven't measured, but it seems like boot and shutdown times >>> have improved over the years, but that they are still a lot slower >>> than Linux. Is there more that can be done to improve these >>> times? Thanks. >> >> I don't know about shutdown times, but Colin Percival has been doing a >> lot of work on boot times lately. Take a look at his recent Twitter feed >> (@cperciva), including entries like this >> >> https://twitter.com/cperciva/status/1435719945912868864 >> >> and this >> >> https://twitter.com/cperciva/status/1436452578536013828 >> > > [Forgot to copy reply to questions@] > > and also > > https://twitter.com/cperciva/status/1434743398489935875 > > https://twitter.com/cperciva/status/1435417195505278977 > As a follow up to that, a tweet from Colin (https://twitter.com/cperciva/status/1444910673893355525) a few hours ago says "Loader and kernel are around 2.7 seconds now. There's a breakdown of that time on the wiki: https://wiki.freebsd.org/BootTime" That's on an AWS c5.xlarge instance which he's using as a standard. I'm looking forward to seeing this work appearing in RELEASE in the future. -- Nothing teaches one not to try to stamp out burning thermite quite like real-life experience. — James Davis Nicoll
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