Re: [Audacity-devel] Excessive slowness for some users

[Leland <ll...@ho...>]

It’s certainly worth trying, but be cautious about changing the block size.  When we first started aup3, we tested several block sizes and the 64KB size worked the best.  But, I’m pretty sure that was on machines that were lightly loaded.

 

From: James Crook <jam...@gm...> 
Sent: Thursday, May 13, 2021 4:14 PM
To: audacity-devel <aud...@li...>
Subject: Re: [Audacity-devel] Excessive slowness for some users

 

The slow appearance of the problem possibly fits with checkpointing.

Planned changes, to use more standard max .wal size (i.e. block-size x checkpoint-block-count-threshold )  may both make the slowdown smaller and more even, if it is the cause.  It may also eliminate it, if it is related to exceeding some in-memory cache size and so thrashing.

I would say the fastest way is to get some test builds out that do this, and get feedback from such users.
Things that may also help confirm/contradict this are asking about total RAM and about other programs running - especially browsers with many tabs open.  Perhaps closing browsers so freeing up RAM will alleviate??

How many are 'worrying numbers'?




 

On Thu, 13 May 2021 at 21:23, Cliff <fly...@gm... <mailto:fly...@gm...> > wrote:

I have not seen that on Mac Mojave. The only things that at times seem slow is saving after a lot of editing. Initial project is usually 2+ hours and the final project is an hour or 1:15 or so. Compressor is normally quick, but I’m using the old one and not the new one. Basic operations are all very normal speeds.

 

Cliff





On May 13, 2021, at 13:51, Steve Fiddle <ste...@gm... <mailto:ste...@gm...> > wrote:

 

We're getting a worrying number of reports of Audacity 3.x being excessively slow for some users. The common factor being that the projects are longer than about 30 minutes.

 

Most of the reports have been on Windows, but so are most of our users, so that may not be significant.

 

On Linux, when working with project of an hour or more I have also experienced some long waits, especially when closing the project (though  I rarely work on projects that are more than a few minutes long). 

 

A peculiarity is that the slowness may not appear immediately. It seems to happen after working on the project for a while, and may be related to using "Undo".

 

Below is the latest report that came in a few minutes ago.

 

Steve

 

 

---------- Forwarded message ---------
From: [redacted]
Date: Thu, 13 May 2021 at 19:26
Subject: Audacity 3.02

 

I appreciate the work you do and you making it available free to the user. It has helped me for years. 

 

I do not want to complain but I am having some issues that I feel you should be made aware of. 

 

I am using a Windows 10 Computer. All of my recordings are voice only and range from 30 to 60 minutes. Over the years I have made many recording using audacity. I average 2-3 recordings a week and have used audacity since one of your earliest versions. 

 

A few weeks ago I upgraded to Audacity 3.0. With great expectation, I loaded it, expecting my “wait” time to be reduced. The reverse happened on nearly everything I do. It was so bad, I went back to my older version. Today, I saw 3.02 was out and downloaded it. I recorded a 48 minute audio without issue. However, When it came to editing, it was a different story. Below are a few of the “wait times” I experienced.

 

*        Sound Finder took a long time but I did not time it.

*        Label Audio Split took over 20 minutes

*        Compressor took over 40 minutes.  

*        Truncate Silence took a long time.

*        Saving the file also took an extremely long time.

*        Closing Audacity took over 21 minutes.

I hope this information helps resolve some issues. If I can be of help in evaluating, I would be happy to do so.

 

Sincerely, 

[redacted]

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