[Discuss] Why are all my hard drives slow on Ubuntu? (new computer)

[Matthew Gillen]

On 8/28/2013 8:02 PM, Daniel Barrett wrote:
> On August 28, 2013, Gregory Boyce wrote:
>> Anything interesting in dmesg related to the drive or the controller?
> 
> Hmm, I don't really know what to look for, so I put the whole thing
> here (for Ubuntu 12.04 LTS):
> 
>   http://www.blazemonger.com/dmesg.txt

The lines I was looking for were these:
[    0.882760] LSI 3ware SAS/SATA-RAID Controller device driver for
Linux v3.26.02.000.
[    0.883566] ahci 0000:00:1f.2: version 3.0
[    0.883643] ahci 0000:00:1f.2: irq 80 for MSI/MSI-X
[    0.889807] e1000e: Intel(R) PRO/1000 Network Driver - 2.0.0-k
[    0.889809] e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
[    0.891377] xor: automatically using best checksumming function:
[    0.899068] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 Gbps
0x31 impl SATA mode
[    0.899071] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio
slum part ems apst
[    0.899074] ahci 0000:00:1f.2: setting latency timer to 64
...
[    1.234773] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[    1.234785] ata7: SATA link down (SStatus 0 SControl 300)
[    1.234802] ata6: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    1.234820] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

which say that your SATA controller seems to be negotiating with the
drives just fine.

Check ubuntu's bug reports for issues with that particular RAID
controller's driver.

HTH,
Matt