https://devzone.nordicsemi.com/f/nordic-q-a/85750/ble-throughput-clarificationHi All, I am working on NRF52840 and trying to optimize the BLE throughput. The current settings are: PHY: 2M PHY Conncetion Interval: 9.375 ~ 15 ms GAP_DATA_LENGTH: 251 GAP_EVENT_LENGTH: 100 ATT_MTU: 247 The total data length I am testingen-USTelligent Community 13Mon, 21 Mar 2022 20:51:30 GMThttps://devzone.nordicsemi.com/thread/359237?ContentTypeID=1Mon, 21 Mar 2022 20:51:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0cf1464d-87c0-4c5f-ae7c-3c7f8c85854eRJ Fang<p>Wow! Thank you Hung. Yes I am sure I fill the buffer when ble resources are avaiable.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/357899?ContentTypeID=1Mon, 14 Mar 2022 10:18:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:32283574-8f13-4110-95f5-01e295417253Hung Bui<p>Hi RJ Fang,</p> <p>I assume you are using nRF5 SDK ?&nbsp;<br />I would suggest to capture a <a href="https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE">sniffer trace </a>so that we know what might be the bottle neck.&nbsp;</p> <p>At 2Mbps you can achieve higher throughput. I would expect a number around 1200kbps.&nbsp;<br /><br />We also need to look at how you queue the notification/write command for sending. Make sure you fill the buffer when it&#39;s available.&nbsp;</p> <p></p><div style="clear:both;"></div>