Avoid the tinny audio pause while using rewind

[vsub_]

The rewind(which creates temporary save states in ram)could be useful but the tinny audio pause while creating save states(which is automatic between x number of frames)is kinda annoying.

Is there is some way to avoid that?

[[Unknown]]

Well, it has to pause things to take a snapshot, but the better your hardware, the faster that pause should be. Maybe there's some performance issue causing it to take longer than expected - this is on the hardware in your signature, right?

-[Unknown]

[vsub_]

(09-23-2016 02:40 AM)[Unknown] Wrote:  this is on the hardware in your signature, right?

Yes.
The game is also loaded in ram

[[Unknown]]

So, I'm using a 3770 3.4Ghz, GTX 950, and 16GB of RAM on Windows 7 64-bit SP1. So not all that different from your specs.

I set the frequency to every frame, and it spent 24% of its time dealing with savestates. This is probably why there's sometimes pauses. A lot of that time is just spent on memory access - but I do see an opportunity to offload some work onto another thread. Let's see if it helps...

-[Unknown]

[vsub_]

I set it to every 10 seconds(600 on 60fps game)and I still hear the half second pause every 10 seconds

Also I don't know what is the difference between the rewind=>save state to ram and placing ppsspp on my ram drive and saving there but normal save states are MUCH more notable than rewind save states(even tho both are saved in ram)

[[Unknown]]

Rewind snapshots are handled kinda differently, i.e.:

1. Currently, no screenshot is captured, which avoids a GPU perf penalty. Files come with a screenshot.

2. The state is compressed differently. Rewind uses a base (uncompressed) screenshot every X states, and delta compresses by block for the non-base states. Files use Snappy to compress the one state in isolation.

3. Rewind snapshots are stored in a ringbuffer, to avoid reallocating memory. Files reallocate each time.

4. Files rename and swap with the old state and try to handle disk full. Rewind snapshots ignore all this.

The "core" of it is still the same, though. It's just that files have more wrapped around them, basically.

As for the pause - for me, the last change helped, and I made another change which reduces CPU burn in states more. Unfortunately, I was still able to notice a hiccup or two - differently not a whole half second or anything, I'd say more like a tenth of a second or something. Still bad, but I'm not sure what's causing it.

-[Unknown]