Low buffer versus disk cache

[musicman691]

With one of the improvements in PT 2020.11 being improved working at low buffers I've changed from running at 512 to 128. I also have been running with a disk cache of 2 gig. Making some changes to a session swapping out the previous Arturia B3 emulation for the Acoustic Samples B5 V-3 running in UVI Workstation (easier than working in Falcon 2).

Hit play and I get all kinds of distortion & crackling. So I up the buffer to 512 and it's okay. I then happen to look at the cache meter and it's not green but is full scale. Change cache to 4 gig and drop the buffers back to 128. Everything plays fine and I see the cache meter line is now green and showing 49% usage. To me that means it should have been fine at 2 gig disk cache but it wasn't. Changing cache size to 'normal' didn't help and still had distortion & crackling.

Has anybody seen such an interaction between disk cache size & buffers? Keep in mind that my sessions are on a 7200 WD Black internal spinner.

[Emi]

With an SSD everything will improve. I don’t use disk cache.

[musicman691]

Originally Posted by Emi

With an SSD everything will improve. I don’t use disk cache.

Simple answer that doesn't help. Thanks anyway.

[Emi]

IME/IMO of you have to up the cache disk is because your hard disk is not fast enough. And I had the same problems back in the days when I was using spinners. Once I went fully SSD all these problems went away and I switched to normal disk cache.

But sorry for not being of any help.

[JFreak]

Disk Cache has zero effect on VI plugins performance


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[musicman691]

Originally Posted by JFreak

Disk Cache has zero effect on VI plugins performance


Sent from my iPhone using Tapatalk

Never said that. What I said was I found an interesting seeming correlation between a session fully loading and playback buffers. At no time did the cpu usage ever go past 50%

[musicman691]

Originally Posted by Emi

IME/IMO of you have to up the cache disk is because your hard disk is not fast enough. And I had the same problems back in the days when I was using spinners. Once I went fully SSD all these problems went away and I switched to normal disk cache.

But sorry for not being of any help.

It's a 7200 rpm drive. Always been fast enough.

[JFreak]

Didn't mean to comment that comment, just telling that it does not have any effect on VI problems. SSD is useless too, unless your VI sample library is on it.

[Downtown_BE]

Originally Posted by JFreak

Disk Cache has zero effect on VI plugins performance


Sent from my iPhone using Tapatalk

to me disk cache changes the overall performance of the whole session and mekaes everyting running smoother! I never run any session without disk cache anymore - its on 6GB default and I can work on big sessions 128 buffer overdubbing with no latency which is pretty damn cool and close to my HD rig years back!

[JFreak]

I also have DC on all the time (32GB) so that recording never stops. With DC you can even record to USB stick if you really want to, so it is great. But it is designed for audio files, not VI's.