Am Freitag, 20. Juli 2012 schrieb Remco Hosman: > > 11 really fast 15000rpm FC / SAS disks could possibly do 936 MB/s. > > But regular 7200rpm SATA disks depending to the on disk location > > might be as slow as 40-50 MB/s – just try fio disk-zone-profile on > > one if you do not believe this – and then even with 11 disks 936 > > MB/s is out of reach. > > My BTRFS array consists of 5 WD Green 2T disks. each of them goes a > bit over 100MB/sec on sequential read/write. I tested 2 WD Green 1,5 TB and each of them goes about 90-100 MB/s at the beginning of the disk and about 40-50 MB/s at the end of the disk. So did you run fio disk-zone-profile on the whole disk and made a graph? If not, I do not believe your figures. Thanks, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
