On Thu, Dec 17, 2009 at 10:24 AM, Claudio Jeker <[email protected]> wrote: > On Thu, Dec 17, 2009 at 03:54:54PM +0100, Robert wrote: >> If I understood the original article correct this would mean that >> the writing of 1 sector could in fact be 2 reads + 1 write >> (internally in the disk), which would be a *serious* performance hit >> (we are not talking 5-10% here...). >> > > How can a device with a 4k internal blocksize need 2 reads + 1 write to > write a 512byte block. It will be 1 read + 1 write max. Now if you can
Indeed, the problem is not writing 512 bytes, but writing 4k split across a 4k boundary. Fortunately, I don't care about this because my future hard drives will all be SSD and they have 512K sectors. oh wait....
