[App_rpt-users] [SPAM] Re: [SPAM] Re: Culling Linux Services (ACID)

[Steve Gladden]

Yep I’ve tried disabling everything possible (everything that takes an interrupt and/or cpu cycles) NTPD included.
I’ve never noticed anything as such to make a significant difference…
I’ve reached the conclusion:

1.       USB sucks (as I’ve been told by the pros here) and it’s never going to get any better (on USB).

2.       The software is still imperfect and has room to be improved (better kernel /os/usb/timer integration).

When I grow up & get smarter/more experienced I’ll either agree with the pros or fix it.

Steve


From: George Csahanin [mailto:george at dyb.com]
Sent: Sunday, July 31, 2011 11:17 PM
To: Chuck Henderson
Cc: Steve Gladden; John Heron; app_rpt mailing list
Subject: Re: [SPAM] Re: [App_rpt-users] [SPAM] Re: Culling Linux Services (ACID)

Not running ntpd here, though

George Csahanin
Sent from my iPad

On Jul 31, 2011, at 8:44 PM, Chuck Henderson <chuck.henderson at gmail.com<mailto:chuck.henderson at gmail.com>> wrote:

Disable NTPD and the problem happens much less often.  I cron ntpdate to run once per hour to keep the time close.  This way I only hear the audio glitch once per hour rather than intermittently.
On Jul 31, 2011 4:57 PM, "Steve Gladden" <steve at michiganbroadband.com<mailto:steve at michiganbroadband.com>> wrote:
> There's a recording of it over here: http://www.youtube.com/watch?v=lqYwhtuVLDs
>
> Steve
>
> -----Original Message-----
> From: app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org> [mailto:app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org>] On Behalf Of George Csahanin
> Sent: Sunday, July 31, 2011 2:16 PM
> To: John Heron
> Cc: app_rpt mailing list
> Subject: Re: [App_rpt-users] [SPAM] Re: Culling Linux Services (ACID)
>
> I think I know what you mean. Shows us as a very brief, repeated disruption to PL tone, drops your mobile/ht decoder, maybe for time in 2 seconds, then ok for a while. t iunterrupts main audio as well, just very brief and not noticed.
>
> Yup, every PC I tried does it. I jusst got used to it.
>
> I wanted to get a recording of it over a year ago, but no clean way to record audio. You really get to notice it if you put your signal generator in the receiver, and modulate with something like a 1Kc tone
>
> I've tried five computers and four USB devices, all do it.
>
> GeorgeC
> W2DB
>
>
> ----- Original Message -----
> From: "John Heron" <jh0932 at gmail.com<mailto:jh0932 at gmail.com>>
> To: "George Csahanin" <george at dyb.com<mailto:george at dyb.com>>
> Cc: "Lu Vencl" <vencl at att.net<mailto:vencl at att.net>>; "MichaelCarey"
> <michaelcarey at internode.on.net<mailto:michaelcarey at internode.on.net>>; "app_rpt mailing list"
> <app_rpt-users at ohnosec.org<mailto:app_rpt-users at ohnosec.org>>
> Sent: Sunday, July 31, 2011 12:26 PM
> Subject: [SPAM] Re: [App_rpt-users] Culling Linux Services (ACID)
>
>
>> Any motorboating issues?
>>
>> Sent from my iPhone
>>
>> On Jul 31, 2011, at 1:21 PM, "George Csahanin" <george at dyb.com<mailto:george at dyb.com>> wrote:
>>
>>> So far built 3 on Intel D945GCLF2 boards, PicoPSU power supplies, both
>>> Limey off a CF and Acid off disk
>>>
>>> Use CM108 $6.96 USB sounds FOBs. Brought PTT out of one of them, the
>>> others use printer port for PTT, and all use software squelch and ctcss
>>> decode.
>>>
>>> GeorgeC
>>>
>>> ----- Original Message ----- From: "John Heron" <jh0932 at gmail.com<mailto:jh0932 at gmail.com>>
>>> To: "'Lu Vencl'" <vencl at att.net<mailto:vencl at att.net>>; "'Michael Carey'"
>>> <michaelcarey at internode.on.net<mailto:michaelcarey at internode.on.net>>; "'app_rpt mailing list'"
>>> <app_rpt-users at ohnosec.org<mailto:app_rpt-users at ohnosec.org>>
>>> Sent: Sunday, July 31, 2011 9:25 AM
>>> Subject: Re: [App_rpt-users] Culling Linux Services (ACID)
>>>
>>>
>>>> It begs the question on what hardware really works 100% and what does
>>>> not. I
>>>> ran into this years ago running a global pactor III network and finally
>>>> had
>>>> to goto a acceptable hardware list as some hardware came real close to
>>>> being
>>>> fully compatible but would sporadically do weird things for no apparent
>>>> reason... a bad thing when the box is in remote jungle locations... It
>>>> boils
>>>> down to who has had the least amount of issues with motherboard a vs. b
>>>> and
>>>> so on...
>>>>
>>>> I am looking at small micro ATX form factors for example... anybody have
>>>> suggestions for a inexpensive repeatable reliable solution?
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org>
>>>> [mailto:app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org>] On Behalf Of Lu Vencl
>>>> Sent: Sunday, July 31, 2011 9:44 AM
>>>> To: 'Michael Carey'; 'app_rpt mailing list'
>>>> Subject: Re: [App_rpt-users] Culling Linux Services (ACID)
>>>>
>>>> Michael,
>>>> I still have not figured out what causes this issue.
>>>> I have tried adding two different NEC chipset USB PCI boards and that
>>>> made
>>>> it much worse on my ASUS mother boards. I believe I have pretty much
>>>> exhausted all options at this point. I just don't know why all 8 of my
>>>> boxes
>>>> 2.8 GHZ (all Asus) do this. I went to slower boxes (even down to 400
>>>> Mhz)
>>>> and I don't get this issue.. Go figure.
>>>> There has to be some other underlying issue where perhaps and interrupt
>>>> is
>>>> being messed with or some other issue. I just can't pin it down.
>>>> I am working out a trade for some slower boxes in exchange for these
>>>> machines as a solution for now.
>>>> Sorry I wish I had a better answer.
>>>> Lu
>>>> KA4EPS
>>>>
>>>> -----Original Message-----
>>>> From: app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org>
>>>> [mailto:app_rpt-users-bounces at ohnosec.org<mailto:app_rpt-users-bounces at ohnosec.org>] On Behalf Of Michael Carey
>>>> Sent: Sunday, July 31, 2011 7:00 AM
>>>> To: app_rpt mailing list
>>>> Subject: [App_rpt-users] Culling Linux Services (ACID)
>>>>
>>>> Hi Everybody,
>>>>
>>>> In an effort to make node 27871 a lean, mean, fighting machine... I'm
>>>> trying to keep things neat and tidy by stopping any services that have
>>>> no direct impact on the operation of the node.
>>>>
>>>> I'm after input on what others have done on their own AllStarLink nodes.
>>>>
>>>> I have done a similar thing on my Icom G2 D-Star gateway... going
>>>> through and disabling services (like bluetooth, VNC, smartcard, IPv6,
>>>> etc).
>>>>
>>>> On a side note, has anyone found a definitive cause for the occasional
>>>> motorboating/stuttering audio when an AllStarNode transmits? I have
>>>> another machine that I can use, but I would like to know what causes it
>>>> and how it can be eliminated or reduced. This is the only thing that has
>>>> marred an otherwise perfect experience with my AllStarLink node.
>>>>
>>>> Michael.
>>>> VK5ZEA
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>
>
>
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