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Re: [PATCH v3] console/serial: bump buffer from 16K to 128K
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 19 Sep 2023 15:06:45 +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>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 19 Sep 2023 13:06:54 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.09.2023 14:51, 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 128K 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 128K in order to cope with
> current systems generating output faster does seem appropriate to have
> a better user experience with the provided defaults.
>
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> --
> Changes since v2:
> - Bump to 128K.
Wow, I was hesitant about 32k, and now we're going all the way up to 128?
Even the recent report indicated 24k would be fine there ...
Jan
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