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

[scott at ehrlichtronics.com (Scott Ehrlich)]

How about the ata5 and ata6 links at just 1.5 Gbps?

What drives are you seeing the slowest performance on?   A dmesg might
reflect which ata drives.   May be the speed factor from that link.

If you are dealing with sata, can you test one of the slow drives from
whatever SATA port it is connect to (say the RAID card) and instead connect
it to a non RAID motherboard port, or vice-versa?

Also, what firmware/BIOS level is the motherboard at and the RAID card?

What do the vendor notes say about known issues with the version(s) you
have to what newer versions might be available, and, if you can update the
firmware versions, what is involved?

Scott


On Wed, Aug 28, 2013 at 9:07 PM, Matthew Gillen <me at mattgillen.net> wrote:

> 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
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