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From: Hariprasad Kelam <hariprasad.kelam@gmail.com>
To: Subhashini Rao Beerisetty <subhashbeerisetty@gmail.com>,
	kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Re: How to debug throughput issues?
Date: Wed, 26 Jun 2019 07:44:44 +0530
Message-ID: <20190626021444.GA2588@hari-Inspiron-1545> (raw)
In-Reply-To: <CAPY=qRQ2bFfua8UuRvb_5m1h3Gn-Csa4uFgV5w2=H4ufPFnUJA@mail.gmail.com>

On Tue, Jun 25, 2019 at 10:26:54PM +0530, Subhashini Rao Beerisetty wrote:
Hi  Subhashini,

Please see inline,
>  Hi All,
> 
>  I’ve two Bluetooth dongles and connected to two Linux
> systems(hostname1, hostname2). I’ve a test executable and it creates a
> BT link does the file transfer and calculates the throughput.
> 
Are these dongle supports classic mode or Ble?
Which profile are you using to establish connection between these two? (
PAN, ..etc)
>  I repeated the same test with the same BT dongles on another
> different Linux systems(hostname3, hostname4), here I’m getting less
> data rate.
> 
After inserting dongles to host are you getting serial interface
/dev/tty* or hci interface ?
If its hci interface ,you can use hcidump to see packets  and check MTU
size
> Here first I want to narrow down whether the issue is below device
> driver level or above device driver level and where the bottleneck is?
> which tools will help me to debug this kind of issue?
> 
I think before jumping into driver level ,its better to ensure all
bluetooth parameters are same on both the setups.

Thanks,
Hariprasad k
> Thanks
> 
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies@kernelnewbies.org
> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-25 16:56 Subhashini Rao Beerisetty
2019-06-26  2:14 ` Hariprasad Kelam [this message]
2019-06-26  5:26   ` Subhashini Rao Beerisetty
2019-06-26  5:47     ` hariprasad kelam
2019-06-26  5:52       ` Subhashini Rao Beerisetty

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