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Load full file (not decoded) into memory, Load decoded file into memory?

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Manfred:
If you have your files stored on a NAS, the method loading full file (not decoded) into memory takes a certain time for up to 30 sec for large dsd files. I use the method decoded into memory. I can not hear any differences between the three methods. NAS->MC->AIR using Ethernet->Devialet D220 PRO.

dtc:
Decoding before loading is the best way to minimize computer activity during playback, which is the purpose of playing from memory. However, there are a couple of issues that can arise from the MC implementation. First, it starts playing before the file is fully decoded and loaded. That can cause hiccups on some systems. Second, since the decoded file can be large, it does not always load the whole file even when memory is available. That means that during playback it has to decode and load the rest of the file, which also can cause hiccups on some systems.

Loading the compressed file into memory means that there is some CPU usage during playback, although it is minimal even on very slow machines. However, it loads the whole file into memory and does so before it starts playback. That minimizes the possibility of hiccups at the start and during playback.

Either option works pretty well for 16/44 files. These differences appear in large hi rez or DSD files and when a usb drive or NAS are used.

tyler69:

--- Quote from: dtc on January 27, 2017, 08:49:31 am ---Second, since the decoded file can be large, it does not always load the whole file even when memory is available.

--- End quote ---
I do not understand this argumentation. Why does MC not always load the whole file even when memory is available?

kr4:

--- Quote from: dtc on January 27, 2017, 08:49:31 am ---Either option works pretty well for 16/44 files. These differences appear in large hi rez or DSD files and when a usb drive or NAS are used.

--- End quote ---
All that is consistent with my findings, especially with multichannel files. ;)

millst:

--- Quote from: tyler69 on January 27, 2017, 09:17:09 am ---I do not understand this argumentation. Why does MC not always load the whole file even when memory is available?

--- End quote ---

One possibility, the decoded file is too large. MC is 32-bit and can't address more than 2GB.

-tm

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