zfs parition probing causing long delay at BTX loader

Steven Hartland killing at multiplay.co.uk
Fri Oct 21 15:59:10 UTC 2011


----- Original Message ----- 
From: "Mark Saad" <nonesuch at longcount.org>
>> Yes after the beastie menu we also have a noticable pause
>> before the kernel start booting, just white square top left hand
>> corner, not tracked that one down yet, any ideas?
>
> Steve the change you need is in HEAD not sure if it was MFC'd to 9-STABLE yet
> 
> http://svnweb.freebsd.org/base/head/sys/amd64/amd64/machdep.c?view=markup&pathrev=224516
> 
> There is a slow memory check done early in the kernel load that is
> mostly useless. DragonFlyBSD removed it completely. FreeBSD has a
> loader tunable to disable. I have a few boxes with 128G of ram and it
> takes about 2mins to test the ram .

Thanks Mark that removed the 45 seconds delay after beastie so in total
boot is now 1 1/2 minutes quicker, result :)

    Regards
    Steve

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