Nowadays,the IO schedulers in linux kernel have four types: deadline,noop,Anticiptory and CFQ.CFQ is the default scheduler.But CFQ is
not a good scheduler for SSD,dealine may be a good choice. When deadline runs,it has a mount of computation about merging and sorting.Merge has three types: front_merge,no_merge and back_merge. Why don't have another type: merge based same sector.For example,it have two bios in a request list,theyboth have the same bi->sector,the bi->size maybe not equal. Whether can we put the latter bio replace the former?What do you find that significant?Or the other levels in OS has finished this function? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
