Re: "Checkpointing long" on exit

On Tue, Mar 16, 2021 at 3:54 PM Leland <[email protected]> wrote:

> As for ODL, this is distinctly different than “alias” files and if I’m not
> mistaken, it was alias files that could cause project breakages for users.
> ODL still did the import as normal, it just allowed you to do other things
> while it did the loading.
>

Yes, but NOT really -  you could only ODL an aliased (external to the
project) audio file.

Peter.



>
> *From:* Peter Sampson <[email protected]>
> *Sent:* Tuesday, March 16, 2021 9:24 AM
> *To:* Devel <[email protected]>; Peter Sampson <
> [email protected]>
> *Subject:* Re: [Audacity-devel] "Checkpointing long" on exit
>
>
>
>
>
>
>
> On Tue, Mar 16, 2021 at 1:26 PM Steve Fiddle <[email protected]>
> wrote:
>
> Why is this happening?
>
>
>
> Xubuntu 20.04
>
> Audacity 3.0.0 2c47dc5
> <https://github.com/audacity/audacity/commit/2c47dc5ba1a91c87a457ffba6caf8b1baf706279>
>
> PC laptop has system installed on SSD
>
> Additional data storage on internal hdd.
>
> Audacity temp folder is on SSD.
>
>
>
> Importing large WAV from hdd:
>
> 1. Launch Audacity
>
> 2. Drag and drop large WAV file (2.4 GB) from hdd into Audacity.
>
> Import takes about 45 seconds.
>
> 3. Exit Audacity
>
> 3.1. "Save project before closing?" -> No
>
> 3.2 "Checkpointing long" dialog opens and may take 30 seconds before
> Audacity closes.
>
>
>
> Why is Audacity doing "checkpointing"?  What is it actually doing?
>
>
>
> If I wait a couple of minutes after the file has fully imported before
> exit, Audacity closes immediately. Does this mean that Audacity is actually
> doing part of the import process in the background after the waveform has
> appeared?
>
>
>
> Importing from SSD:
>
> 1. Launch Audacity
>
> 2. Drag and drop large WAV file (2.4 GB) from SSD into Audacity.
>
> Import is MUCH slower (around 1 minute 30) ???
>
> 3. Exit Audacity
>
> 3.1. "Save project before closing?" -> No
>
> 3.2 Audacity closes immediately.
>
>
>
> Why does import from SSD take twice as long as from a much slower hdd?
>
>
>
> Peter has also reported slower import from his SSD on Windows, though I
> don't know the exact details.
>
>
>
> Mt test results come from responding to a user who wants ODL resrored
>
>
>
> My test results can be seen here:
>
>
> https://forum.audacityteam.org/viewtopic.php?f=20&t=116572&p=419670&hilit=demand#p419670
>
>
>
> The oddity is that the import of a 4GB audio file is slower from my SSD
> than from my onboard HD.
>
>
>
> Peter.
>
>
>
>
>
>
>
> Steve
>
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