On Oct 10, 2015, at 7:28 AM, René J.V. Bertin <rjvber...@gmail.com> wrote: > HFS+ is supposed to contain algorithms that limit file fragmentation, but > without a background process that moves files (or file blocks), it cannot > prevent free space fragmentation, just limit it. On a spinning disks that can > become a limit on performance (I presume that theoretically the same applies > to SSDs too)
random access time for a SSD is 1-3 orders of magnitude less than for a rotational drive. As with anything, you need to measure ‘real world use’ to be certain, but it’s probably not an issue for SSDs at all. > and any process that requires contiguous files will ultimately fail if those > cannot be obtained, regardless the underlying medium if it doesn't take that > aspect into account. Which API lets you know if you have a contiguous file or not / how do you ‘require’ a contiguous file on disk? > Any thoughts on this, regardless of whether free disk space fragmentation is > a real-world issue or not? maybe something like hfsdbug could help you determine if it’s something to worry about or not? http://osxbook.com/software/hfsdebug/ -- Daniel J. Luke +========================================================+ | *---------------- dl...@geeklair.net ----------------* | | *-------------- http://www.geeklair.net -------------* | +========================================================+ | Opinions expressed are mine and do not necessarily | | reflect the opinions of my employer. | +========================================================+ _______________________________________________ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users
