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Re: [PATCH 2/2] console/serial: bump buffer from 16K to 32K
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 23 Jun 2022 15:32:30 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
- Delivery-date: Thu, 23 Jun 2022 13:32:38 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 23.06.2022 11:08, Roger Pau Monne wrote:
> Testing on a Kaby Lake box with 8 CPUs leads to the serial buffer
> being filled halfway during dom0 boot, and thus a non-trivial chunk of
> Linux boot messages are dropped.
>
> Increasing the buffer to 32K does fix the issue and Linux boot
> messages are no longer dropped. There's no justification either on
> why 16K was chosen, and hence bumping to 32K in order to cope with
> current systems generating output faster does seem appropriate to have
> a better user experience with the provided defaults.
Just to record what was part of an earlier discussion: I'm not going
to nak such a change, but I think the justification is insufficient:
On this same basis someone else could come a few days later and bump
to 64k, then 128k, etc.
Jan
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