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Am Freitag, 24. August 2012, 11:25:48 schrieb Frank Steinmetzger: |
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> On Thu, Aug 23, 2012 at 12:15:20PM +0200, Alex Schuster wrote: |
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> > Mark Knecht writes: |
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> > > I'm currently just using a single large partition & ext3. I didn't |
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> > > |
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> > > do anything special in fdisk so the partition might not be aligned as |
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> > > best it could be. I don't know. |
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> > |
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> > […] |
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> > The size of an erasable block of SSDs is even larger, usually 512K, it |
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> > would be best to align to that, too. A partition offset of 512K or 1M |
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> > would avoid this. |
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> |
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> Unless the filesystem knows this and starts bigger files at those 512 k |
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> boundaries (so really only one erase cycle is needed for files <=512 k), |
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> isn't this fairly superfluous? |
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no, if you misalign, a lot of 4k blocks might span into two erase blocks. |
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Which is bad. If you align correctly, you will never cross them unnecessary, |
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sparing your SSD some unnecessary writes and improving overall performance. |
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#163933 |
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