5

Very bad performance of ext4 on 3.0.17

view full story
linux-howto

http://serverfault.com – I just set up a new server (Gentoo 64bit with kernel 3.0.17) with 4 x 15000RPM SAS disks(sdc, sdd, sde and sdf), and created soft RAID10 on top of them, the partitions are aligned at 1MB: # fdisk -lu /dev/sd{c,e,d,f} Disk /dev/sdc: 600.1 GB, 600127266816 bytes 255 heads, 63 sectors/track, 72961 cylinders, total 1172123568 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xdd96eace Device Boot Start End Blocks Id System /dev/sdc1 2048 1172 (HowTos)