>>>>> "sathish" == SATHISH J <sathish.j@tatainfotech.com> writes: sathish> Hi all, sathish> What is an un-aligned buffer ? When do we get un-aligned buffers ? it is easier what is an aligned buffer. Some hardware needs their buffers to be aligned in a word boundary, in a 64bytes bondary, 128bytes, a page boundary, etc that means that sometimes we have to copy that data from one buffer that is unaligned to other that has the right alignement. That happens for instance for DMA, that you have requeriments of that kind of things. For that hardware we need to move the buffers. Some archs have problems accesing int/longs that are not word aligned, i.e. its address is not a multiple of its size, for that archs it is better/faster to copy the buffer to one aligned buffer than to access the unaligned buffer. Later, Juan. -- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
