Re: [Audacity-devel] [Audacity-quality] Imports slower on my Windows PC than on my Big Sur Mac

[Peter S. <pet...@gm...>]

BAD plan to have the Temp files on the HD and not the SSD

On W10 SM-HD (seconds) - Temp files on SM-HD
MP3:   73.2    25.3    30.1
WAV:  210.2   91.1    52.2
AAC:  125.7   92.9    82.5
But note my temp files and thus the project are on the SSD

On W10 SM-HD (seconds) - Temp files on SSD
MP3:   17.6   18.3    18.0
WAV:   17.1   12.5    15.5
AAC:   11.5   10.8    17.2
But note my temp files and thus the project are on the SSD

So MUCH slower - and thus my Temp files will be remaining on the SSD

Peter.



On Tue, Apr 13, 2021 at 2:03 PM Peter Sampson <
pet...@gm...> wrote:

>
>
> On Tue, Apr 13, 2021 at 1:48 PM Steve Fiddle <ste...@gm...>
> wrote:
>
>>
>>
>> On Tue, 13 Apr 2021 at 13:22, Peter Sampson <
>> pet...@gm...> wrote:
>>
>>> I'm totally baffled by the fact that Imports slower on my Windows PC
>>> than on my Big Sur Mac
>>> in some cases (WAV in particular) significantly so.
>>>
>>> This is a spin-off observation from the testing I did today for Bug
>>> #2745.
>>> For that I made a Macro that does
>>> a) 3 imports of a one-hour MP3 audio file
>>> b) 3 imports of a one-hour WAV audio file
>>> c) 3 imports of a one-hour AAC audio file
>>> Copy of Win Macro attached
>>>
>>> On W10 (seconds)
>>> MP3:   18.6   16.5    16.1
>>> WAV:   44.5   21.7    25.1
>>> AAC:   26.7   12.9    18.2
>>>
>>> On Mac (seconds)
>>> MP3:   11.8   12.0    12.0
>>> WAV:    4.8    5.0      5.2
>>> AAC:    8.7    8.7      8.8
>>>
>>> 1) So we see WAV at an average 30 seconds on W10 versus 5 seconds on Mac
>>> 2) We see AAC at an average 14 seconds on W10 versus 8.7 seconds on Mac
>>> 3) We see MP3 at an average 17 seconds on W10 versus 12 seconds on Mac
>>>
>>> So:
>>> a)  the Mac is consistently faster on the imports
>>> b) but also note that while the Mac is pretty consistent,
>>>     in contrast on Win the first export of a file-type seems to always
>>> be the longest
>>>
>>> Both these machines are pretty similar in Spec:
>>> Both are 2-7GZ 8GB RAM dual-core
>>> Both have 256GB SSD ( Win has 60GB free, Mac has 90GB free)
>>> Both are Intel processors - Win is i7 Mac is i5
>>>
>>> The only difference is that the Windows PC is my primary workhorse so
>>> gets more work
>>> Does this make the SSD more fragmented and thus slower?
>>>
>>
>> Are you running 32-bit Audacity on 64-bit Windows?
>>
>
> Yes of course I am running 32-bit Audacity on 64-bit Windows Home.
>
> 32-bit is what we supply and support - not 64-bit (well not yet anyway).
>
> Later I may try the 64-bit test build from Github - I will have to drop
> the AAC imports due to no 64-bit FFmpeg.
>
>
> Perhaps there are inefficiencies in writing to the SQLite database due to
>> the app being 32-bit on 64-bit hardware (?) If that's the case, then I'd
>> expect a 64-bit build of Audacity to be closer to the performance that you
>> see on macOS.
>>
>
> Interesting thought.
>
> Cheers,
> Peter.
>
>
>
>> Steve
>>
>>
>>>
>>>
>>> Fortunately most of our users will not notice this as most of then work
>>> on just the one
>>> platform so will not see X-platform timing differences.  Plus our
>>> timings for 3.0.2, 3.0.0
>>> and 2.4.3 are pretty consistently within good tolerance.
>>>
>>>
>>> If anybody can cast any light on the mystery I'd be most grateful.
>>>
>>> Thanks,
>>> Peter.
>>> _______________________________________________
>>> Audacity-quality mailing list
>>> Aud...@li...
>>> https://lists.sourceforge.net/lists/listinfo/audacity-quality
>>>
>>