[Bluez-users] throughput query

[Bluez-users] throughput query

[Manjunath Prabhu]

hi marcel,
I am using anycom bt dongles. i set up a bt connection with pan/bnep.
i use i-perf to measure the throughput ..and i get abt 620kbps. I then
change to DH5 packet and measure the throughput.....and it is abt
300kbps.  Is this because of asymmetric and symmetric channels
respectively.
logically,use of  DM packets gives a lower througput compared to DH packets. 

How is that hcitool is able to set the packet type in a connection?
Isn't there some sort of communication with the LM and baseband??
Similarly, can't i change the transmit power level???

thanks and regards,
manjunath


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Re: [Bluez-users] throughput query

[Marcel Holtmann]

Hi Manjunath,

> I am using anycom bt dongles. i set up a bt connection with pan/bnep.
> i use i-perf to measure the throughput ..and i get abt 620kbps. I then
> change to DH5 packet and measure the throughput.....and it is abt
> 300kbps.  Is this because of asymmetric and symmetric channels
> respectively.
> logically,use of  DM packets gives a lower througput compared to DH packets. 

how often must I say this? Don't change the packet types. Enable all of
them and let the link manager select the best one.

> How is that hcitool is able to set the packet type in a connection?

See above.

> Isn't there some sort of communication with the LM and baseband??

What do you mean?

> Similarly, can't i change the transmit power level???

No, you can't change that.

Regards

Marcel




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