Re: recent head having significantly less "avail memory"

From: Guido Falsi via freebsd-current <freebsd-current_at_freebsd.org>
Date: Mon, 13 Sep 2021 22:07:46 +0200
On 13/09/21 19:08, Konstantin Belousov wrote:
> 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.
> 

I shared the data you request here:

https://www.madpilot.net/cloud/s/ENW5zF7jfmrmFeG

-- 
Guido Falsi <mad_at_madpilot.net>
Received on Mon Sep 13 2021 - 20:07:46 UTC

Original text of this message