My disk is very slow after I installed ubuntu 10.04 over my old 9.04. Doing some tinkering helped a little:
sudo hdparm -tT /dev/sda1 /dev/sda1: Timing cached reads: 3668 MB in 2.00 seconds = 1834.11 MB/sec Timing buffered disk reads: 292 MB in 3.02 seconds = 96.83 MB/sec sudo hdparm -c1 -d1 -X 66 /dev/sda1 /dev/sda1: setting 32-bit IO_support flag to 1 HDIO_SET_32BIT failed: Invalid argument setting using_dma to 1 (on) HDIO_SET_DMA failed: Inappropriate ioctl for device setting xfermode to 66 (UltraDMA mode2) HDIO_DRIVE_CMD(setxfermode) failed: Invalid exchange IO_support = 0 (default) HDIO_GET_DMA failed: Inappropriate ioctl for device sudo hdparm -tT /dev/sda1 /dev/sda1: Timing cached reads: 4006 MB in 2.00 seconds = 2003.29 MB/sec Timing buffered disk reads: 312 MB in 3.02 seconds = 103.41 MB/sec
But it is still far too slow. On the other version, I had a custom partition setup, with the home partition with 100GB, and ext3 (and other partitions for swap, boot, root folder and space for a windows partition I never cared to install ).
This time I am using a standard Lynx setup (2 partitions, the swap and the main one with almost 250Gb, using ext4).
Some applications I develop, that use disk for some unit tests, are now very slow to work with. Is there a way to making it faster? Going back to 9.04? Waiting for 10,10? Gparting and making partitions smaller on ext3? I don't know if any of these will work....