Reduced throughput

RE: Reduced throughput

Sigurd — Tue, 07 May 2019 15:10:31 GMT

[quote user="obbe"]I'll consider switching as notifications were acknowledged by the link layer anyway[/quote]

Yes, I think that is the best option if you want to increase the throughput.

RE: Reduced throughput

obbe — Tue, 07 May 2019 12:14:14 GMT

Hi, thanks for the quick reply!

ATT MTU size is set to 23 bytes.

DLE is not enabled. This might be completely wrong, but I believe it was once enabled (because we had some characteristics that were >20 bytes), but it caused some issues because the tablet had to make an active read on each indication to receive all bytes.

Indications are used. We need confirmation that it reached the tablet. Reading the linked post however, I'll consider switching as notifications were acknowledged by the link layer anyway. This post was very helpful in describe the consequences of the notifications vs indications.

Edit: I wasn't aware of Connection Event Length Extension (and consequently it was not enabled). I will test some with it.

RE: Reduced throughput

Sigurd — Tue, 07 May 2019 11:12:53 GMT

Hi,

What ATT MTU size are you using ?

Have you enabled DLE ?

Have you enabled Connection Event Length Extension ?

Are you using notification or indication ? Notifications are preferred if you need a higher transfer rate. See this post.