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Pat Dalzell
2004-02-23, 08:53
This is timely for me, after resolving some network issues I'm now
experiencing what sounds like the same "skipping" (a brief pause, I
believe due to the buffer running out) with AAC files.

The system is a 2.4ghz Pentium, 512mb RAM, WinXP SP1. While listening to
256k mp3 files there are no problems, you can rip a cd or do other cpu
intensive operations while the slim continues to play. When listening to
AAC files, however, anything that uses a lot of cpu has a chance to cause
skips in the music. Most notably, everytime you hit Refresh in the
slimserver app, you're guaranteed a skip.

On this machine, with nothing other than an AAC file streaming, the cpu
utilization is down around 5% or so. When you refresh the slimserver app,
cpu spikes to 100% for the duration of the refresh, the music skips
(pauses), then everything returns to normal.

Pat

> -----Original Message-----
> From: discuss-bounces (AT) lists (DOT) slimdevices.com
> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Ron Mellum
> Sent: Sunday, February 22, 2004 8:51 PM
> To: discuss (AT) lists (DOT) slimdevices.com
> Subject: [slim] Minimum CPU Recommendations for Server Software?
>
>
> I looked on the Slim Devices website, but didn't see any
> mention of recommended
> minimum CPU's for different OS's, but then again, I may have
> missed it. What
> got me starting to think about this is that a while ago I noticed that
> streaming music to my work computer starting skipping. When I
> think about it
> now, the skipping probably started at the same time that I
> switched server
> computers and also started using iTunes to rip CD's to AAC
> and not mp3.
>
> The previous system was a K6-300 running FreeBSD 4.7. I
> switched to using a
> spare iMac G3-350. With the iMac I've noticed that streaming
> mp3's doesn't seem
> to be an issue, but streaming AAC's can result in skipping.
> Using "top", I've
> noticed that when streaming mp3's perl seems to be the only
> related process
> consume CPU and it averages ~18% CPU. When streaming AAC's,
> perl remains at
> about the same level, but lame consumes ~50% CPU and mov123
> ~5% CPU. So, ~75%
> of the CPU is being consumed to either stream to HTTP or play
> on the Slimp3
> device. This would seem to explain the skipping, especially
> the times when the
> Slimp3 device was playing and I was streaming to work.
>
> I'm curious if anyone else has data or information on CPU
> utilization for their
> particular OS's.
>
> Ron

dean
2004-02-23, 09:03
The issues with the webserver hammering the CPU will be addressed in
the next major release, courtesy of some good work from Dan Sully and
our other open source developers. (I've also heard reports that
Windows XP SP2, now in beta, also fixes this problem...)

-dean

On Feb 23, 2004, at 7:53 AM, Pat Dalzell wrote:

> This is timely for me, after resolving some network issues I'm now
> experiencing what sounds like the same "skipping" (a brief pause, I
> believe due to the buffer running out) with AAC files.
>
> The system is a 2.4ghz Pentium, 512mb RAM, WinXP SP1. While listening
> to
> 256k mp3 files there are no problems, you can rip a cd or do other cpu
> intensive operations while the slim continues to play. When listening
> to
> AAC files, however, anything that uses a lot of cpu has a chance to
> cause
> skips in the music. Most notably, everytime you hit Refresh in the
> slimserver app, you're guaranteed a skip.
>
> On this machine, with nothing other than an AAC file streaming, the cpu
> utilization is down around 5% or so. When you refresh the slimserver
> app,
> cpu spikes to 100% for the duration of the refresh, the music skips
> (pauses), then everything returns to normal.
>
> Pat
>
>> -----Original Message-----
>> From: discuss-bounces (AT) lists (DOT) slimdevices.com
>> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Ron Mellum
>> Sent: Sunday, February 22, 2004 8:51 PM
>> To: discuss (AT) lists (DOT) slimdevices.com
>> Subject: [slim] Minimum CPU Recommendations for Server Software?
>>
>>
>> I looked on the Slim Devices website, but didn't see any
>> mention of recommended
>> minimum CPU's for different OS's, but then again, I may have
>> missed it. What
>> got me starting to think about this is that a while ago I noticed that
>> streaming music to my work computer starting skipping. When I
>> think about it
>> now, the skipping probably started at the same time that I
>> switched server
>> computers and also started using iTunes to rip CD's to AAC
>> and not mp3.
>>
>> The previous system was a K6-300 running FreeBSD 4.7. I
>> switched to using a
>> spare iMac G3-350. With the iMac I've noticed that streaming
>> mp3's doesn't seem
>> to be an issue, but streaming AAC's can result in skipping.
>> Using "top", I've
>> noticed that when streaming mp3's perl seems to be the only
>> related process
>> consume CPU and it averages ~18% CPU. When streaming AAC's,
>> perl remains at
>> about the same level, but lame consumes ~50% CPU and mov123
>> ~5% CPU. So, ~75%
>> of the CPU is being consumed to either stream to HTTP or play
>> on the Slimp3
>> device. This would seem to explain the skipping, especially
>> the times when the
>> Slimp3 device was playing and I was streaming to work.
>>
>> I'm curious if anyone else has data or information on CPU
>> utilization for their
>> particular OS's.
>>
>> Ron
>
>
>

Bruce Prager
2004-02-23, 16:52
Is there any fix coming which allows SLIMP3's to work reliably with V5 and
above?

I have 5, 2 on bridges. Even with the bridged devices removed, the other 3
will all either freeze or bounce from once display to another after several
days of attempting to run any version of 5. Returning to 4.26 returns
everyone to normal operation. I've commented on this several times but have
yet to see any action taken to resolve the issue. I find it hard to believe
I'm the only one having a problem.
----- Original Message -----
From: "dean blackketter" <dean (AT) slimdevices (DOT) com>
To: "Slim Devices Discussion" <discuss (AT) lists (DOT) slimdevices.com>
Sent: Monday, February 23, 2004 11:03 AM
Subject: [slim] Minimum CPU Recommendations for Server Software?


> The issues with the webserver hammering the CPU will be addressed in
> the next major release, courtesy of some good work from Dan Sully and
> our other open source developers. (I've also heard reports that
> Windows XP SP2, now in beta, also fixes this problem...)
>
> -dean
>
> On Feb 23, 2004, at 7:53 AM, Pat Dalzell wrote:
>
> > This is timely for me, after resolving some network issues I'm now
> > experiencing what sounds like the same "skipping" (a brief pause, I
> > believe due to the buffer running out) with AAC files.
> >
> > The system is a 2.4ghz Pentium, 512mb RAM, WinXP SP1. While listening
> > to
> > 256k mp3 files there are no problems, you can rip a cd or do other cpu
> > intensive operations while the slim continues to play. When listening
> > to
> > AAC files, however, anything that uses a lot of cpu has a chance to
> > cause
> > skips in the music. Most notably, everytime you hit Refresh in the
> > slimserver app, you're guaranteed a skip.
> >
> > On this machine, with nothing other than an AAC file streaming, the cpu
> > utilization is down around 5% or so. When you refresh the slimserver
> > app,
> > cpu spikes to 100% for the duration of the refresh, the music skips
> > (pauses), then everything returns to normal.
> >
> > Pat
> >
> >> -----Original Message-----
> >> From: discuss-bounces (AT) lists (DOT) slimdevices.com
> >> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Ron Mellum
> >> Sent: Sunday, February 22, 2004 8:51 PM
> >> To: discuss (AT) lists (DOT) slimdevices.com
> >> Subject: [slim] Minimum CPU Recommendations for Server Software?
> >>
> >>
> >> I looked on the Slim Devices website, but didn't see any
> >> mention of recommended
> >> minimum CPU's for different OS's, but then again, I may have
> >> missed it. What
> >> got me starting to think about this is that a while ago I noticed that
> >> streaming music to my work computer starting skipping. When I
> >> think about it
> >> now, the skipping probably started at the same time that I
> >> switched server
> >> computers and also started using iTunes to rip CD's to AAC
> >> and not mp3.
> >>
> >> The previous system was a K6-300 running FreeBSD 4.7. I
> >> switched to using a
> >> spare iMac G3-350. With the iMac I've noticed that streaming
> >> mp3's doesn't seem
> >> to be an issue, but streaming AAC's can result in skipping.
> >> Using "top", I've
> >> noticed that when streaming mp3's perl seems to be the only
> >> related process
> >> consume CPU and it averages ~18% CPU. When streaming AAC's,
> >> perl remains at
> >> about the same level, but lame consumes ~50% CPU and mov123
> >> ~5% CPU. So, ~75%
> >> of the CPU is being consumed to either stream to HTTP or play
> >> on the Slimp3
> >> device. This would seem to explain the skipping, especially
> >> the times when the
> >> Slimp3 device was playing and I was streaming to work.
> >>
> >> I'm curious if anyone else has data or information on CPU
> >> utilization for their
> >> particular OS's.
> >>
> >> Ron
> >
> >
> >

seanadams
2004-02-23, 18:42
Bruce,

Sorry if this has been asked already, but are you running v2.2
firmware? Reset and look in the bottom right corner on the welcome
screen.

We changed the discovery protocol and now only the current SLIMP3
firmware is supported in the server. Older versions might exhibit the
issue you've described because the server will not uniquely identify
the SLIMP3s correctly.

Thanks,
Sean

On Feb 23, 2004, at 3:52 PM, Bruce Prager wrote:

> Is there any fix coming which allows SLIMP3's to work reliably with V5
> and
> above?
>
> I have 5, 2 on bridges. Even with the bridged devices removed, the
> other 3
> will all either freeze or bounce from once display to another after
> several
> days of attempting to run any version of 5. Returning to 4.26 returns
> everyone to normal operation. I've commented on this several times
> but have
> yet to see any action taken to resolve the issue. I find it hard to
> believe
> I'm the only one having a problem.
> ----- Original Message -----
> From: "dean blackketter" <dean (AT) slimdevices (DOT) com>
> To: "Slim Devices Discussion" <discuss (AT) lists (DOT) slimdevices.com>
> Sent: Monday, February 23, 2004 11:03 AM
> Subject: [slim] Minimum CPU Recommendations for Server Software?
>
>
>> The issues with the webserver hammering the CPU will be addressed in
>> the next major release, courtesy of some good work from Dan Sully and
>> our other open source developers. (I've also heard reports that
>> Windows XP SP2, now in beta, also fixes this problem...)
>>
>> -dean
>>
>> On Feb 23, 2004, at 7:53 AM, Pat Dalzell wrote:
>>
>>> This is timely for me, after resolving some network issues I'm now
>>> experiencing what sounds like the same "skipping" (a brief pause, I
>>> believe due to the buffer running out) with AAC files.
>>>
>>> The system is a 2.4ghz Pentium, 512mb RAM, WinXP SP1. While
>>> listening
>>> to
>>> 256k mp3 files there are no problems, you can rip a cd or do other
>>> cpu
>>> intensive operations while the slim continues to play. When
>>> listening
>>> to
>>> AAC files, however, anything that uses a lot of cpu has a chance to
>>> cause
>>> skips in the music. Most notably, everytime you hit Refresh in the
>>> slimserver app, you're guaranteed a skip.
>>>
>>> On this machine, with nothing other than an AAC file streaming, the
>>> cpu
>>> utilization is down around 5% or so. When you refresh the slimserver
>>> app,
>>> cpu spikes to 100% for the duration of the refresh, the music skips
>>> (pauses), then everything returns to normal.
>>>
>>> Pat
>>>
>>>> -----Original Message-----
>>>> From: discuss-bounces (AT) lists (DOT) slimdevices.com
>>>> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Ron
>>>> Mellum
>>>> Sent: Sunday, February 22, 2004 8:51 PM
>>>> To: discuss (AT) lists (DOT) slimdevices.com
>>>> Subject: [slim] Minimum CPU Recommendations for Server Software?
>>>>
>>>>
>>>> I looked on the Slim Devices website, but didn't see any
>>>> mention of recommended
>>>> minimum CPU's for different OS's, but then again, I may have
>>>> missed it. What
>>>> got me starting to think about this is that a while ago I noticed
>>>> that
>>>> streaming music to my work computer starting skipping. When I
>>>> think about it
>>>> now, the skipping probably started at the same time that I
>>>> switched server
>>>> computers and also started using iTunes to rip CD's to AAC
>>>> and not mp3.
>>>>
>>>> The previous system was a K6-300 running FreeBSD 4.7. I
>>>> switched to using a
>>>> spare iMac G3-350. With the iMac I've noticed that streaming
>>>> mp3's doesn't seem
>>>> to be an issue, but streaming AAC's can result in skipping.
>>>> Using "top", I've
>>>> noticed that when streaming mp3's perl seems to be the only
>>>> related process
>>>> consume CPU and it averages ~18% CPU. When streaming AAC's,
>>>> perl remains at
>>>> about the same level, but lame consumes ~50% CPU and mov123
>>>> ~5% CPU. So, ~75%
>>>> of the CPU is being consumed to either stream to HTTP or play
>>>> on the Slimp3
>>>> device. This would seem to explain the skipping, especially
>>>> the times when the
>>>> Slimp3 device was playing and I was streaming to work.
>>>>
>>>> I'm curious if anyone else has data or information on CPU
>>>> utilization for their
>>>> particular OS's.
>>>>
>>>> Ron
>>>
>>>
>>>