Sorry -- the polling system is a bit clunky, and doesn't get the love we would like sometimes;) There are 8 options, max, so we'll never get really smooth curves without a complete overhaul;)
- Most filesystems will slow down as they approach a full status. This is particularly true for write speed.
- Rotational disks are faster near the outer rim (start of the disk) and slower near the hub. A 2TB WDC drive I have here does 150 MB/s near the beginning, and only 70 MB/s near the end. That's typical figures. By only partitioning the first 60% of the disk, I get 120-150 MB/s speeds. (This is not to be confused with short stroking, which reduces the access time by reducing reading arm movement.)
- For mechanical drives, disk fragmentation also becomes more of a problem the fuller the disk is. (And yes, fragmentation also affects Linux file systems.)
- SSDs need to spend a disproportionally larger time doing garbage collection and clearing up sectors as a disk approaches full (yes, even with TRIM, unless you always delete entire sectors). For a near full disk, it's not uncommon to have 1 second or more hiccoughs because the drive firmware hasn't been able to prepare sectors for writing.
Re:Gauss is back (Score:3, Informative)
Sorry -- the polling system is a bit clunky, and doesn't get the love we would like sometimes ;) There are 8 options, max, so we'll never get really smooth curves without a complete overhaul ;)
Tim
Re:Gauss is back (Score:5, Informative)
You'll find plenty with *fewer* than 8, but (so far as I know, and barring warps in the space-time continuum) none with more.
And by-the-by, polls (prompt question only, or prompt question and response choices) are always welcome!
timothy
Re:Gauss is back (Score:5, Informative)
Why? Speed.
- Most filesystems will slow down as they approach a full status. This is particularly true for write speed.
- Rotational disks are faster near the outer rim (start of the disk) and slower near the hub. A 2TB WDC drive I have here does 150 MB/s near the beginning, and only 70 MB/s near the end. That's typical figures. By only partitioning the first 60% of the disk, I get 120-150 MB/s speeds. (This is not to be confused with short stroking, which reduces the access time by reducing reading arm movement.)
- For mechanical drives, disk fragmentation also becomes more of a problem the fuller the disk is. (And yes, fragmentation also affects Linux file systems.)
- SSDs need to spend a disproportionally larger time doing garbage collection and clearing up sectors as a disk approaches full (yes, even with TRIM, unless you always delete entire sectors).
For a near full disk, it's not uncommon to have 1 second or more hiccoughs because the drive firmware hasn't been able to prepare sectors for writing.