Rolling Cache Limit

[tjrush 54]

What is a reasonable number for the Rolling Cache Limit?

[Simmer2308 22]

16 minutes ago, tjrush said:

What is a reasonable number for the Rolling Cache Limit?

How much hard drive space can you spare?  I have mine set for 2gigs...

[Bert Pieke 7,584]

37 minutes ago, tjrush said:

What is a reasonable number for the Rolling Cache Limit?

8 GB, the default

[fppilot 4,355]

46 minutes ago, Bert Pieke said:

8 GB, the default

wow.  I have a large capacity SSD and have kept my rolling cache at 48 GB.  Yes, GB.  So is that overkill?  And if so then why?  It would be great to see some published optimum.  Re Bojote type guidance with some credible basis. I do not skip all over the world. I fly from here to there, and my next flight is from there to the next destination, and in the same aircraft.  I seldom vary from that, but always return to flying from there to the next destination.  I treat my sim flying as if I were doing the same in life. 

Edited March 10, 2022 by fppilot

[cianpars 1,164]

Zero unless you have a very slow internet connection.

I've tried big and small caches and found them to be of no benefit like many others have.

 

[hansb57 492]

I have had it at 32 gb now at 16. Did not notice any difference.

[Mace 1,902]

41 minutes ago, cianpars said:

Zero unless you have a very slow internet connection.

I've tried big and small caches and found them to be of no benefit like many others have.

 

With the rolling cache on, won't the sim re-load the same area a lot faster though?

I know you may not fly in the same place twice that often.  But some of us do. and want to know if the above is a benefit.  It seems to be but I haven't formally tested...

[JimmiG 244]

I guess it's kind of hard to do repeatable comparison benchmarks due to the variability and many factors involved.

I increased mine to 32 GB as I have space to spare on my SSD. Since I tend to fly around the same areas most of the time, it makes sense to me.

[jcomm 5,890]

8GB

[edpatino 1,960]

Up to you depending on your system, flight habits and internet speed

Edited March 10, 2022 by edpatino

[ChaoticBeauty 6,692]

Here is an official recommendation by Sebastian in one of the first Q&A sessions.

Quote

All the rolling cache does is put world data into a FIFO cache on disk so that when flying over an area twice, the data isn’t streamed from the internet again. Each http request will first check the presence of the data on disk before reading it from the internet. Data is not changed in any way and is stored on disk in exactly the same format as it is received from the internet. In some situations, the HDD access may be slower than high speed internet access, but for the majority, the cache will reduce and / or prevent terrain streaming lag. In all cases, the rolling cache will reduce the internet data usage and free up bandwidth for other uses when users fly over the same area again. We recommend a rolling cache of at least 8Gb, 32Gb being enough for most use cases. In most cases the sim will stream world data at an average below 10Mbps. The rolling cache does not impact user experience when they fly over new areas however. We have not thoroughly tested the benefits of creating huge caches of hundreds or thousands of gigs but given how the system works, as the cache grows bigger and bigger, it’s benefits should fade out and it will take a lot of time to even fill up the cache.

 

[cianpars 1,164]

2 hours ago, Mace said:

With the rolling cache on, won't the sim re-load the same area a lot faster though?

I know you may not fly in the same place twice that often.  But some of us do. and want to know if the above is a benefit.  It seems to be but I haven't formally tested...

Maybe a little, but not much in my experience.  If you regularly fly out of the same airport, you may find it beneficial to create a manual cache for that area rather than the constant writes to your SSD a rolling cache creates.  Again, I found little gain from that either and run with all caches off.

Oddly, the sim has seemed more stable since stopping caching too, which I thought a bit odd

[Noel 4,487]

100Gb here--but I have a lot of unused storage so what the hey...

[bean_sprout 1,201]

My understanding is the caches are only for photogrammetry which I don't  use since I fly offline.

ns

Edited March 10, 2022 by bean_sprout

[edpatino 1,960]

4 hours ago, ChaoticBeauty said:

as the cache grows bigger and bigger, it’s benefits should fade out and it will take a lot of time to even fill up the cache.

Hard to understand this, as it's by definition a "rolling" cache, so it deletes data and writes new one, it's supposed not to be growing indefinitely.

Edited March 10, 2022 by edpatino