Hi all !
I was looking into tuning the readahead done on disks in a RAID.
It seems as though (from md.c) that levels 0, 4 and 5 are handled
in similar ways.
The readahead is set to chunk_size*4 per disk, and then increased
to 1024*MAX_SECTORS = 1024*128 = 128k if the above equation yielded
a result lower than this.
So besides from changing the chunk size to something bigger, is there
any way the readahead can be tuned ? Should (and could I safely) just
change the equation in md.c ?
Regards,
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