Bug#858084: closed by Ben Hutchings <b...@decadent.org.uk> (Re: Bug#858084: linux-image-amd64 - kernel option enable request)

[Narayanan R S]

On Thu, Mar 30, 2017 at 5:13 PM, Ben Hutchings  wrote:

>
> > AFAIK, there's no (performance or size) penalty in enabling it [...]
>
> It's not very large, but yes there is a cost.
>
>
Is it enough to leave it disabled? It seems that being a (standard) sysfs
interface, the penalty is not really much at all (and considering all the
other stuff that we do have enabled in the kernel, especially for
convenience and/or usability, having this enabled shouldn't be an issue).

I hope you can consider enabling it.

Thanks.

Regards,

Narayanan.

Bug#858084: closed by Ben Hutchings <b...@decadent.org.uk> (Re: Bug#858084: linux-image-amd64 - kernel option enable request)

[Ben Hutchings]

On Thu, 2017-03-30 at 09:25 +0530, Narayanan R S wrote:
> Hello,
> 
> AFAIK, there's no (performance or size) penalty in enabling it [...] 

It's not very large, but yes there is a cost.

Ben.

-- 
Ben Hutchings
In a hierarchy, every employee tends to rise to his level of
incompetence.



signature.asc
Description: This is a digitally signed message part

Bug#858084: closed by Ben Hutchings <b...@decadent.org.uk> (Re: Bug#858084: linux-image-amd64 - kernel option enable request)

[Narayanan R S]

Hello,

AFAIK, there's no (performance or size) penalty in enabling it and it
provides some very convenient stats directly via sysfs. As a user of the
stats, it is very convenient just to have them ready and usable without
having to jump through hoops to access them.

I don't understand the reason for not enabling them. Is there any reason
*NOT* to enable it?

Thanks.

Regards,

Narayanan.

On Thu, Mar 30, 2017 at 4:45 AM, Debian Bug Tracking System <
ow...@bugs.debian.org> wrote:

> This is an automatic notification regarding your Bug report
> which was filed against the linux-image-amd64 package:
>
> #858084: linux-image-amd64 - kernel option enable request
>
> It has been closed by Ben Hutchings <b...@decadent.org.uk>.
>
> Their explanation is attached below along with your original report.
> If this explanation is unsatisfactory and you have not received a
> better one in a separate message then please contact Ben Hutchings <
> b...@decadent.org.uk> by
> replying to this email.
>
>
> --
> 858084: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858084
> Debian Bug Tracking System
> Contact ow...@bugs.debian.org with problems
>
>
> -- Forwarded message --
> From: Ben Hutchings <b...@decadent.org.uk>
> To: 858084-d...@bugs.debian.org
> Cc:
> Bcc:
> Date: Thu, 30 Mar 2017 00:13:03 +0100
> Subject: Re: Bug#858084: linux-image-amd64 - kernel option enable request
> On Sat, 2017-03-18 at 10:16 +0530, Narayanan R S wrote:
> > Package: linux-image-amd64
> > Version: 4.9+79~bpo8+1
> >
> > Can you please enable the CONFIG_CPU_FREQ_STAT_DETAILS option for the
> > kernels.
>
> No, this is not really needed.  You can use the power:cpu_frequency
> tracepoint to see all transitions and then work out the statistics in a
> user-space program (or use bpfcc to do it in-kernel).
>
> Ben.
>
> --
> Ben Hutchings
> Everything should be made as simple as possible, but not simpler.
>- Albert
> Einstein
>
>
> -- Forwarded message --
> From: Narayanan R S <n...@kadamba.org>
> To: sub...@bugs.debian.org
> Cc:
> Bcc:
> Date: Sat, 18 Mar 2017 10:16:20 +0530
> Subject: linux-image-amd64 - kernel option enable request
> Package: linux-image-amd64
> Version: 4.9+79~bpo8+1
>
> Can you please enable the CONFIG_CPU_FREQ_STAT_DETAILS option for the
> kernels.
>
> Thanks in advance.
>
> Regards,
>
> Narayanan.
>
>

Bug#858084: linux-image-amd64 - kernel option enable request

[Narayanan R S]

Package: linux-image-amd64
Version: 4.9+79~bpo8+1

Can you please enable the CONFIG_CPU_FREQ_STAT_DETAILS option for the
kernels.

Thanks in advance.

Regards,

Narayanan.