4 ms·
> APFS addresses this with I/O QoS (quality of service) to prioritize accesses that are immediately visible to the user over background activity that doesn't ha
by forgotpwtomain 10y ago
> APFS addresses this with I/O QoS (quality of service) to prioritize accesses that are immediately visible to the user over background activity that doesn't have the same time-constraints. This is inarguably a benefit to users and a sophisticated file system capability.
Could someone clear up how this is can be determined on the filesystem rather than scheduler level (I suspect it cannot be, or the article is making bogus claims)?
- astrange 10y agoWhy couldn't they be? Those are in the same process and can talk to each other. HFS+ implements scheduling of background QoS threads, especially on HDDs - you can see it working with 'spindump'.
- iratedev 10y agoIt would not surprise me if Apple built in OS + FS integration into APFS. That's has always been Apple's thing - control.