Am 19.02.2013 16:31, schrieb Heinz Diehl: > On 18.02.2013, Reindl Harald wrote: > >> which misalignment? > > Aligment to a 4k blocksize. This is what most of the SSDs and advanced > format HDDs use. Both your partitions have to be aligned to 4k block > boundaries and the filesystem you create on top of them must support > the 4k blocksize. > > If you do a straight "dd" from a 512/512 disk with a filesystem using > 512 bytes blocksize on top, you'll encounter a performance > degradation i can not remember when the last ext3/ext4 had 512 bytes blocksize our main-server's sysroot created 2008: Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 393216 Block count: 1572354 Reserved block count: 2 Free blocks: 1049068 Free inodes: 329327 First block: 0 Block size: 4096 Fragment size: 4096 Filesystem created: Mon Aug 18 06:48:05 2008 my RAID10 sysroot created 2011: Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 1921360 Block count: 7679232 Reserved block count: 2 Free blocks: 5910849 Free inodes: 1743536 First block: 0 Block size: 4096 Fragment size: 4096 Filesystem created: Wed Jun 8 13:10:52 2011
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