[Samba] macOS performance issues

Rowland penny rpenny at samba.org
Fri Oct 9 20:51:41 UTC 2020


On 09/10/2020 21:42, Ian Klemm via samba wrote:
> Hi,
>
>
> I’m currently setting up a samba Server on a Raspberry PI 4 with an external 8TB HDD.
>
> Since this is rather low end hardware, I’m trying to figure out which performance optimizations are still relevant today, since a lot has chanced in the past years and quite a few options are now set by default.
>
>
> The default values seem to work well for Windows but I’m having lots of issues with macOS.
> Even tho I’m able to hit the same maximum speed, the write speed often drops to 200-600Mbit/s and I can’t figure out why.
>
>
> max          971.06 Mbit/s
> average      706.49 Mbit/s
> min          304.47 Mbit/s
>
>
> The HDD definitely isn’t the bottleneck.
>
> root at nas /mnt/hdd # dd if=/dev/zero of=testfile bs=1G count=5 oflag=direct
> 5+0 records in
> 5+0 records out
> 5368709120 bytes (5.4 GB, 5.0 GiB) copied, 33.1576 s, 162 MB/s
>
> $ uname -a
> Linux nas 5.4.51-v7l+ #1333 SMP Mon Aug 10 16:51:40 BST 2020 armv7l GNU/Linux
>
> $ smbd -V
> Version 4.9.5-Debian
>
>
>
> I’d appreciate any tips since I’ve been struggling with this for the past few weeks.
>
> Kind regards
> Ian

How are you running Samba ? as a standalone server or what ?

Have you read this: 
https://wiki.samba.org/index.php/Configure_Samba_to_Work_Better_with_Mac_OS_X

Rowland





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