Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1576785

Re: ARM imx.6 SATA speed regression

From Gary Bisson <gary.bisson@boundarydevices.com>
Newsgroups linux.kernel
Subject Re: ARM imx.6 SATA speed regression
Date 2017-02-08 18:50 +0100
Message-ID <t8Exs-3hZ-17@gated-at.bofh.it> (permalink)
References <t8f61-45q-1@gated-at.bofh.it> <t8fIK-4zi-13@gated-at.bofh.it> <t8fIK-4zi-11@gated-at.bofh.it> <t8gbL-4JU-3@gated-at.bofh.it> <t8hrc-5Gz-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

Hi Dan,

On Tue, Feb 07, 2017 at 05:02:40PM +0000, Dan MacDonald wrote:
> Thankfully there is an archive of older Arch ARM packages which should
> reduce the amount amount of bisection / compiling I may need to do and
> they have packages for most stable kernels between 4.9.0 and 4.9.8
> 
> http://tardis.tiny-vps.com/aarm/packages/l/linux-armv7/

How did that go?

I've tried 'hdparm -Tt' on several kernel version and couldn't confirm
your obervations:

4.9.0:
Timing buffer-cache reads:   366 MB in 0.51 seconds = 733382 kB/s
Timing buffered disk reads:  221 MB in 3.00 seconds = 75411 kB/s

4.9.8:
Timing buffer-cache reads:   358 MB in 0.51 seconds = 717720 kB/s
Timing buffered disk reads:  221 MB in 3.00 seconds = 75244 kB/s

4.10-rc7:
Timing buffer-cache reads:   360 MB in 0.50 seconds = 723576 kB/s
Timing buffered disk reads:  244 MB in 3.00 seconds = 83024 kB/s

Are you sure rolling back to 4.9.0 improves the perf in your case?

Regards,
Gary

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-07 15:40 +0100
  Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-07 16:20 +0100
    Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-07 16:50 +0100
      Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-07 18:10 +0100
        Re: ARM imx.6 SATA speed regression Gary Bisson <gary.bisson@boundarydevices.com> - 2017-02-08 18:50 +0100
          Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-08 19:50 +0100
            Re: ARM imx.6 SATA speed regression Dan MacDonald <allcoms@gmail.com> - 2017-02-09 00:40 +0100

csiph-web