Date: Thu, 28 Nov 2013 18:22:21 -0800 From: Charles Swiger <cswiger@mac.com> To: Adam Vande More <amvandemore@gmail.com> Cc: FreeBSD - <freebsd-questions@freebsd.org> Subject: Re: 4k sectors Message-ID: <A06FB65D-B42E-4A51-94BE-4BB1CB213EBE@mac.com> In-Reply-To: <CA%2BtpaK3WUrP3ryuHfw61RvLft0-NUEbQFrkF22g6sT%2BfbJLrCA@mail.gmail.com> References: <CA%2BtpaK3WUrP3ryuHfw61RvLft0-NUEbQFrkF22g6sT%2BfbJLrCA@mail.gmail.com>
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Hi-- On Nov 28, 2013, at 1:51 PM, Adam Vande More <amvandemore@gmail.com> = wrote: > Is there an easy method to find out the space wasted by using 4k vs = 512? Internal fragmentation wastes half of the smallest logical sector size = (ie, 512 bytes in 8 fragments per 4K block is or was typical for UFS) = times the number of files on the filesystem. The hardware sector size = isn't directly relevant, unless you've changed the filesystem tuning to = match up logical sector size with the physical sector size...although = doing such is usually beneficial. Regards, --=20 -Chuck
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