Date: Mon, 13 Sep 2021 20:08:25 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: mad@madpilot.net Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: recent head having significantly less "avail memory" Message-ID: <YT%2BFiWtUKZuZIbIb@kib.kiev.ua> In-Reply-To: <4c990632-868a-2393-291b-fe7e2bc1974f@madpilot.net> References: <4c990632-868a-2393-291b-fe7e2bc1974f@madpilot.net>
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On Mon, Sep 13, 2021 at 02:59:25PM +0200, Guido Falsi via freebsd-current wrote: > Hi, > > I updated head recently and today I noticed a difference which looks wrong. > > At boodt the new head shows signifcantly less avail memory than before, > around 3 GiB less. > > I moved from commit 71fbc6faed6 [1] where I got: > > Aug 28 22:03:03 marvin kernel: real memory = 17179869184 (16384 MB) > Aug 28 22:03:03 marvin kernel: avail memory = 16590352384 (15821 MB) > > to commit 7955efd574b [2] where I get: > > Sep 13 10:44:40 marvin kernel: real memory = 17179869184 (16384 MB) > Sep 13 10:44:40 marvin kernel: avail memory = 13298876416 (12682 MB) > > I'm seeing this on multiple machines. > > Unluckily bisecting and trying an older loader.efi in sseparate tests did > not give me any more insight. > > The recent changes to efi loader, starting with commit 6032b6ba9596 [3] look > like a possible trigger to this, but I have been unable to confirm it. > > Any suggesstions on how to proceed to debug thiss? ANy idea what a fix could > be? Is this UEFI or bios boot? Provide verbose dmesg for old and new boots on the same machine. For UEFI boot, show output of 'sysctl machdep.efi_map', again for old and new boots.
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