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Today's Topics:
1. Re: Why connmand consume such higher CPU resource? (Daniel Wagner)
2. Re: Why connmand consume such higher CPU resource? (JH)
3. Re: Why connmand consume such higher CPU resource? (Daniel Wagner)
4. Set up :q (JH)
5. Re: Set up :q (JH)
6. How to set up cellular.config with AccessPointName? (JH)
----------------------------------------------------------------------
Date: Sun, 5 Jan 2020 10:40:40 +0100
From: Daniel Wagner <[email protected]>
Subject: Re: Why connmand consume such higher CPU resource?
To: JH <[email protected]>
Cc: connman <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi,
On 05.01.20 03:32, JH wrote:
> I am running connman on Ubuntu 18.04..01, it consumed 100.0 %CPU in my
> laptop where no any communication tasks are running, Firefox was
> turned off as well:
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 947 root 20 0 62540 3416 2608 R 100.0 0.1
> 164:06.54 connmand
>
> Any idea why it consumes so high CPU time?
Probably an unintentionally busy loop in ConnMan. Do you have a log
(connmand -n -d) when this happens?
And which version of ConnMan is this? We had a busy loop in the
timeserver code till version 1.37.
Thanks,
Daniel
------------------------------
Date: Sun, 5 Jan 2020 21:49:51 +1100
From: JH <[email protected]>
Subject: Re: Why connmand consume such higher CPU resource?
To: Daniel Wagner <[email protected]>
Cc: connman <[email protected]>
Message-ID:
<CAA=hcwtj6+tmxvdqxh-mhlmbjyy_n4drq4+zt5szbmz4vdt...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Hi Daniel,
On 1/5/20, Daniel Wagner <[email protected]> wrote:
> Hi,
>
> On 05.01.20 03:32, JH wrote:
>> I am running connman on Ubuntu 18.04..01, it consumed 100.0 %CPU in my
>> laptop where no any communication tasks are running, Firefox was
>> turned off as well:
>>
>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>> 947 root 20 0 62540 3416 2608 R 100.0 0.1
>> 164:06.54 connmand
>>
>> Any idea why it consumes so high CPU time?
>
> Probably an unintentionally busy loop in ConnMan. Do you have a log
> (connmand -n -d) when this happens?
Looks it only occurred sometime, not clear in which circumstance it
was triggered. It does not happen now, I'll run the log when it
happens again.
> And which version of ConnMan is this? We had a busy loop in the
> timeserver code till version 1.37.
It is 1.35-6 in Ubuntu 18, good to know that version 1.37 fixed it,
I'll move to use 1.37.
Thanks Daniel.
> Thanks,
> Daniel
>
------------------------------
Date: Sun, 5 Jan 2020 12:47:41 +0100
From: Daniel Wagner <[email protected]>
Subject: Re: Why connmand consume such higher CPU resource?
To: JH <[email protected]>
Cc: connman <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi,
On 05.01.20 11:49, JH wrote:
>> Probably an unintentionally busy loop in ConnMan. Do you have a log
>> (connmand -n -d) when this happens?
>
> Looks it only occurred sometime, not clear in which circumstance it
> was triggered. It does not happen now, I'll run the log when it
> happens again.
If you haven't enabled the log by default, maybe try to catch the
syscalls ConnMan is doing with strace, e.g
# strace -p $CONNMAN_PID -o /tmp/strace.conman.txt
for a few seconds. Maybe we can see what's going on.
>> And which version of ConnMan is this? We had a busy loop in the
>> timeserver code till version 1.37.
>
> It is 1.35-6 in Ubuntu 18, good to know that version 1.37 fixed it,
> I'll move to use 1.37.
Yes, please use a newer version. The 1.35 has the time server busy loop
bug. This happens when ConnMan starts up and can't connect to any of the
time servers. ConnMan busy loops trying to connect to one of them. This
goes on until the operation succeeds.
Thanks,
Daniel
------------------------------
Date: Mon, 6 Jan 2020 18:15:38 +1100
From: JH <[email protected]>
Subject: Set up :q
To: connman <[email protected]>
Message-ID:
<CAA=hcwrdspb68fpc7msjtu-usf7-bfcc-nvr6dqbz4k7wzh...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
------------------------------
Date: Mon, 6 Jan 2020 18:22:35 +1100
From: JH <[email protected]>
Subject: Re: Set up :q
To: connman <[email protected]>
Message-ID:
<CAA=hcws0n50wa--8gzdp-b4mjuzy0eyhykaxe0jioepbqpn...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
My apology for mistyping the email.
------------------------------
Date: Mon, 6 Jan 2020 18:54:04 +1100
From: JH <[email protected]>
Subject: How to set up cellular.config with AccessPointName?
To: connman <[email protected]>
Message-ID:
<CAA=hcwrjrsmpyrrchxpmloiw6a32uvqro7vo-19dbm0tvsw...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Hi,
Hi,
I cannot find any document for cellular.config syntax, can I I set up
AccessPointName in cellular.config?
I tried following file, it did not work, I know if I have a correct
Name = <SIM service provider>, it will work, but i don't know the name
of the service provider, I only knows the AccessPointName for Aeris
which I think that APN is a gateway to connect to its network.
$ vi /var/lib/connman/cellular.config
[global]
Name = cellular
Description = Cellular
[service_cellular]
Type = cellular
AccessPointName = iot-eu.aer.net
Appreciate your advice.
Thank you.
Kind regards,
- jh
------------------------------
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