Hi, I searched the archives, and the last time this was mentioned was in 2001, and no response was ever given. In a raid0, of course, reads pull off every disk in parallel, thus performance scales with # of disks. However, with raid1, it does not do this--it always reads from just one half of the mirror. Why doesn't it read from both halves of the mirror in parallel? I would expect it to, and would expect raid1 to perform similar to raid0 for reads. I have observed this with 2.4.18 and 2.4.20 thru at least 21rc2. Nick please cc - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
