gmane.comp.audio.audacity.devel

gale | 16 Aug 18:53

Hang up on zooming


Imported a 800 MB WAV via OD, quit Audacity then imported same file 
by normal copy in. Both times I get a hang up of several seconds on
pressing zoom-in the second time before the zoomed in waveform is
displayed. There is no busy icon, no swapping out or increased CPU 
usage while this hang up occurs.    

Repeated both types of import with another similar size file, same
result. 

Did an aliased and copy-in import of the same two files in 1.2.6 but got
no hang up on second zoom press. 

Tested on a fresh reboot and after several hours use, makes no difference.
Any one else see this? Cosmetic but quite irritating. Windows XP 1 GB
RAM. 

Gale 

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Gale Andrews | 16 Aug 19:34

Re: Hang up on zooming


| From gale <at> audacityteam.org 
| Sat, 16 Aug 2008 17:54:20 +0100
| Subject: [Audacity-devel] Hang up on zooming

I also noticed playing further, that the problem does not occur after
the first time I press zoom-in twice. After that I can refit the project
to the window, and zoom around at will without delay.

Gale  

 
> Imported a 800 MB WAV via OD, quit Audacity then imported same file 
> by normal copy in. Both times I get a hang up of several seconds on
> pressing zoom-in the second time before the zoomed in waveform is
> displayed. There is no busy icon, no swapping out or increased CPU 
> usage while this hang up occurs.    
> 
> Repeated both types of import with another similar size file, same
> result. 
> 
> Did an aliased and copy-in import of the same two files in 1.2.6 but got
> no hang up on second zoom press. 
> 
> Tested on a fresh reboot and after several hours use, makes no difference.
> Any one else see this? Cosmetic but quite irritating. Windows XP 1 GB
> RAM. 
> 
> 
> Gale

(Continue reading)

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Michael Chinen | 20 Aug 04:27

Re: Hang up on zooming

On Sat, Aug 16, 2008 at 1:34 PM, Gale Andrews <gale <at> audacityteam.org> wrote:

| From gale <at> audacityteam.org
| Sat, 16 Aug 2008 17:54:20 +0100
| Subject: [Audacity-devel] Hang up on zooming

I also noticed playing further, that the problem does not occur after
the first time I press zoom-in twice. After that I can refit the project
to the window, and zoom around at will without delay.

Tried it out and wasn't able to cause a stall on my mac, although I only tried it with OD (for wav) and mp3 import. Does this only happen repeatably with wavs?

Michael

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Gale Andrews | 21 Aug 19:47

Re: Hang up on zooming


| From "Michael Chinen" <mchinen <at> gmail.com> 
| Tue, 19 Aug 2008 22:27:50 -0400
| Subject: [Audacity-devel] Hang up on zooming
> On Sat, Aug 16, 2008 at 1:34 PM, Gale Andrews <gale <at> audacityteam.org> wrote:
> 
> >  | From gale <at> audacityteam.org
> >  | Sat, 16 Aug 2008 17:54:20 +0100
> >  | Subject: [Audacity-devel] Hang up on zooming
> > 
> >  I also noticed playing further, that the problem does not occur after
> >  the first time I press zoom-in twice. After that I can refit the project
> >  to the window, and zoom around at will without delay.
> 
> Tried it out and wasn't able to cause a stall on my mac, although I only tried it with
> OD (for wav) and mp3 import.  Does this only happen repeatably with wavs?  

Michael

Thanks for checking it.  I've been looking out for this again since you
wrote, and it's just another thing that seems to occur randomly,
irrespective of freshly booted or not, OD or not, or whatever format. 
The only thing that is predictable when it happens is that a second zoom
press straight after the first will cause it, and then it never happens
again in that Audacity session. At any rate, it doesn't seem explicitly
to do with OD.

Thanks

Gale 

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Michael Chinen | 21 Aug 20:02

Re: Hang up on zooming

On Thu, Aug 21, 2008 at 1:47 PM, Gale Andrews <gale <at> audacityteam.org> wrote:

| From "Michael Chinen" <mchinen <at> gmail.com>
| Tue, 19 Aug 2008 22:27:50 -0400
| Subject: [Audacity-devel] Hang up on zooming
> On Sat, Aug 16, 2008 at 1:34 PM, Gale Andrews <gale <at> audacityteam.org> wrote:
>
> > | From gale <at> audacityteam.org
> > | Sat, 16 Aug 2008 17:54:20 +0100
> > | Subject: [Audacity-devel] Hang up on zooming
> >
> > I also noticed playing further, that the problem does not occur after
> > the first time I press zoom-in twice. After that I can refit the project
> > to the window, and zoom around at will without delay.
>
> Tried it out and wasn't able to cause a stall on my mac, although I only tried it with
> OD (for wav) and mp3 import. Does this only happen repeatably with wavs?

Michael

Thanks for checking it. I've been looking out for this again since you
wrote, and it's just another thing that seems to occur randomly,
irrespective of freshly booted or not, OD or not, or whatever format.
The only thing that is predictable when it happens is that a second zoom
press straight after the first will cause it, and then it never happens
again in that Audacity session. At any rate, it doesn't seem explicitly
to do with OD.

In that case it sounds like your disk is taking it's time reading from the cache the first time (which might be on the second zoom hit.) It would probably be exacerbated by disk scratching apps like Firefox.

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