l2test

Bluez-users Manjunath Prabhu 2 participants 2 messages Dec 13, 2004 Bluetooth drivers

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Manjunath Prabhu

author

2004-12-13 04:03 UTC #0 lore raw

Hi marcel,
i am conduting a l2test between 2 devices, say A and B, using fixed packet types (i.e) i am setting the packet type to say DM1 on both sides. Now when A sends data, does it send during all the 6 slots or does it send in alternate slots as the receiver is just listening(not sending)?? I want to know in which slots the packets are transmitted??
I am conducting the same tests for other packet types too.

In l2test, is the method of calculating the throughput correct??? It is calculating the time as
time=time at which last byte is received - time at which first byte is received.

Does this give an accurate measure of l2cap throughput??

Thanks,
Regards,
Manjunath

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Marcel Holtmann

maintainer

2004-12-13 08:18 UTC #1 lore raw

Hi Manjunath,

Quoted 6 lines

i am conduting a l2test between 2 devices, say A and B, using fixed packet types (i.e) i am setting the packet type to say DM1 on both sides. Now when A sends data, does it send during all the 6 slots or does it send in alternate slots as the receiver is just listening(not sending)?? I want to know in which slots the packets are transmitted??
I am conducting the same tests for other packet types too.

and actually I advise you not to try anything like this, because you can't measure things this way. The HCI is in between and there are no rules that maps any of the ACL traffic on HCI to the ACL traffic on the baseband. Get yourself a protocol analyzer and use its routines for measurement of the traffic.

Quoted 4 lines

In l2test, is the method of calculating the throughput correct??? It is calculating the time as
time=time at which last byte is received - time at which first byte is received.

I never checked it and as the name suggest it is a test utility.

Regards

Marcel