Re: Portable version degrading
it's not odd. Many people run portable versions of many programs on their internal hard drive. I have two or three portable versions of programs that I run on my internal hard drive for various reasons. And some people prefer portable versions of programs wherever they run them because they make no changes to the system.
A program is portable when it can be run on any compatible computer without installation and implied in that is that the program can be run from external media.
I haven't seen any explanations so far that are likely to account for the problem and I'm skeptical we'll see one. The hard drive being that full is very unlikely and it doesn't explain why the program runs well when a new portable version is created with degredation occurring considerably later. The degredation is stopped by recreating the portable version. I've seen various hypotheses dealing with storage media and I find none of them plausible. I doubt we will find a reason for this problem.
----- Original Message -----
1. It's not USB. Roger said that what he's referring to as his "portable"
version is in fact on an internal hard disk. I know that may seem an odd use
of the word "portable", but at least it means we can rule out any problems to
do with externally connected devices.
2. The drive is (presumably) not the same one as contains Roger's "standard"
version of NVDA, because the "portable" copy is on a traditional spinning-rust
HDD, whereas his system drive is on an SSD, which is where I assume his
standard version of NVDA is installed. Therefore your suggestion to check how
full each drive is is well worth while, although I would still expect the
system only to have a single swap partition / file, so if it runs out of memory
running either version of NVDA, swapping will occur in exactly the same way
3. The drive containing the "portable" copy is an HDD, whereas the main system
drive is an SSD, so drive degradation of the portable copy is a possible
On Monday 22 January 2018 at 23:30:13, tonea.ctr.morrow@... wrote:
> I've lost track of all the info you gave on the drive. But, I kept a sticky
> note of things to check.
> 1) Check if the USB is version 3. Version 2 is quite a bit slower than
> 3. Also, most people think they can plug a USB 3 into any USB port and it
> will still be a 3. Not true because the slowest wins. If you plug a USB 3
> into a USB 2 port, it becomes a USB 2 drive. Vice versa is also true. A 2
> drive into a 3 port runs at USB 2 speed. To get full USB 3, both the drive
> and the port must be USB 3.
> 2) Fill status of the drive. If the drive is close to being full, it
> may be having to swap data a lot. That can really slow down any
> application. You wouldn't notice it on your regular applications because
> they would run off the regular drive. However, you would notice it on
> anything else that ran from the portable drive. I recommend less that 85%
> full, but others here are more tech savy than myself.
> 3) Drive death immenent. I don't know what it is like to have a solid
> state drive die. But, on a traditional spinning drive, the drive will mark
> sectors as bad when the drive has trouble accessing them. This can result
> in corruptions. And, as the drive has to work twice as hard to find all
> the pieces it keeps moving, this can cause slower run time. Thus, you get
> slower and slower and more frequent data corruptions in an application. I
> don't remember how, but you can test for this.
> Thank you Adriani Botez for reminding me of the 2 versus 3 issue. I lost
> track of who suggested the other two...
> Good luck and let us know the results,
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The first logician says "I don't know."
The second logician says "I don't know."
The third logician says "Yes!"
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