[libbsd 00/22] Remove FreeBSD file descriptors and avoid VFS

[Sebastian Huber]

Hello Chris,

On 25/07/2022 08:12, Sebastian Huber wrote:
> On 11/07/2022 15:04, Sebastian Huber wrote:
>> On 24/06/2022 08:33, Sebastian Huber wrote:
>>> This patch set removes the FreeBSD file descriptors.  The VFS is no 
>>> longer used
>>> if only the USB, SD/MMC, network, PCI, and NVMe support is used by the
>>> application.  This change significantly reduce the memory usage of 
>>> LibBSD for
>>> these applications.  Using the media01 test case for the arm/lpc32xx 
>>> BSP as a
>>> benchmark, the heap usage dropped from 14.3MiB to 10.2MiB.  The "_BSD
>>> bufdaemon", "_BSD vnlru", "_BSD syncer", and "_BSD bufspacedaemon-" 
>>> tasks are
>>> no longer present in media01.  The code size is reduced by about 
>>> 8KiB.  The
>>> data size is reduced by about 30KiB.  The throughput with a simple 
>>> FTP test
>>> increased by about 1%.
>>>
>>> The "Remove FreeBSD file descriptors" change removes more lines than 
>>> there are
>>> added.
>>>
>>> This change makes it easier to port the NFS support to the master 
>>> branch since
>>> now the changes are more localized.
>>
>> I have a target with only 8MiB of RAM (for code and data). So, this 
>> patch set is not just a micro optimization.
> 
> This pending patch set is currently a blocker for me. I would like to 
> work on the NTP daemon integration and an update of the libbsd master 
> branch to a more recent FreeBSD version. This patch set just restores 
> what worked well for several years.

did you have time to review this patch set in the meantime? The NTP 
client no longer crashes with this patch set.

-- 
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