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SMB protocol way slower since > 8.7.2 #16135

@jk779

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@jk779

Describe the bug
The last version I've had a good smb connection speed with was 8.7.2. I believe I've tried to update to 8.8 which killed the performance. Before: 50 MB/s (limited by the hardware at the smb sever), everything after 8.7.2. => ~5-8 MB/s.

I've seen that you've changed the encryption to be on by default between the versions, which i thought was the problem, so i rolled back and it was fast again.

Today I'v seen a major version update and noticed in the changelog that you've reverted the changes to the SMB connection, so I tried updating again. But sadly, the speed is still droppping to around 5 MB/s.

Any idea whats going on? I've checked again with the old version (8.7.2), and with this, the speed is at the old level ~50 MBs again.

The smb server is a fairly vanilla samba on ubuntu 22.04.

Best, Michael

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