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From: Greg KH <greg@kroah.com>
To: Muni Sekhar <munisekharrms@gmail.com>
Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Re: Scheduler benchmarks
Date: Tue, 18 Aug 2020 19:36:56 +0200	[thread overview]
Message-ID: <20200818173656.GA748290@kroah.com> (raw)
In-Reply-To: <CAHhAz+ggd4DPFfWPB+h6Obkjebf5mv5cV6307oKEkEYMhAB3wQ@mail.gmail.com>

On Tue, Aug 18, 2020 at 11:01:35PM +0530, Muni Sekhar wrote:
> On Tue, Aug 18, 2020 at 10:44 PM Greg KH <greg@kroah.com> wrote:
> >
> > On Tue, Aug 18, 2020 at 10:24:13PM +0530, Muni Sekhar wrote:
> > > On Tue, Aug 18, 2020 at 8:06 PM Greg KH <greg@kroah.com> wrote:
> > > >
> > > > On Tue, Aug 18, 2020 at 08:00:11PM +0530, Muni Sekhar wrote:
> > > > > Hi all,
> > > > >
> > > > > I’ve two identical Linux systems with only kernel differences.
> > > >
> > > > What are the differences in the kernels?
> >
> > You didn't answer this question, is this the same kernel source being
> > compared here?  Same version?  Same compiler?  Everything identical?
> Both systems are having exactly the same hardware configuration.
> Compiler and kernel versions are different. One system has Ubuntu
> 16.04.4 LTS(4.4.0-66-generic kernel with gcc version 5.4.0) kernel and
> the other one has Ubuntu 18.04.4 LTS(4.15.0-91-generic kernel with gcc
> version 7.5.0).

Those are _very_ different kernel versions, with many years and tens of
thousands of different changes between them.

Hopefully the newer kernel is faster, so just stick with that :)

greg k-h

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Kernelnewbies@kernelnewbies.org
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WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <greg@kroah.com>
To: Muni Sekhar <munisekharrms@gmail.com>
Cc: kernelnewbies <kernelnewbies@kernelnewbies.org>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: Re: Scheduler benchmarks
Date: Tue, 18 Aug 2020 19:36:56 +0200	[thread overview]
Message-ID: <20200818173656.GA748290@kroah.com> (raw)
In-Reply-To: <CAHhAz+ggd4DPFfWPB+h6Obkjebf5mv5cV6307oKEkEYMhAB3wQ@mail.gmail.com>

On Tue, Aug 18, 2020 at 11:01:35PM +0530, Muni Sekhar wrote:
> On Tue, Aug 18, 2020 at 10:44 PM Greg KH <greg@kroah.com> wrote:
> >
> > On Tue, Aug 18, 2020 at 10:24:13PM +0530, Muni Sekhar wrote:
> > > On Tue, Aug 18, 2020 at 8:06 PM Greg KH <greg@kroah.com> wrote:
> > > >
> > > > On Tue, Aug 18, 2020 at 08:00:11PM +0530, Muni Sekhar wrote:
> > > > > Hi all,
> > > > >
> > > > > I’ve two identical Linux systems with only kernel differences.
> > > >
> > > > What are the differences in the kernels?
> >
> > You didn't answer this question, is this the same kernel source being
> > compared here?  Same version?  Same compiler?  Everything identical?
> Both systems are having exactly the same hardware configuration.
> Compiler and kernel versions are different. One system has Ubuntu
> 16.04.4 LTS(4.4.0-66-generic kernel with gcc version 5.4.0) kernel and
> the other one has Ubuntu 18.04.4 LTS(4.15.0-91-generic kernel with gcc
> version 7.5.0).

Those are _very_ different kernel versions, with many years and tens of
thousands of different changes between them.

Hopefully the newer kernel is faster, so just stick with that :)

greg k-h

  reply	other threads:[~2020-08-18 17:36 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 14:30 Scheduler benchmarks Muni Sekhar
2020-08-18 14:30 ` Muni Sekhar
2020-08-18 14:36 ` Greg KH
2020-08-18 14:36   ` Greg KH
2020-08-18 16:01   ` Muni Sekhar
2020-08-18 16:50   ` Muni Sekhar
2020-08-18 16:54   ` Muni Sekhar
2020-08-18 16:54     ` Muni Sekhar
2020-08-18 17:14     ` Greg KH
2020-08-18 17:14       ` Greg KH
2020-08-18 17:31       ` Muni Sekhar
2020-08-18 17:31         ` Muni Sekhar
2020-08-18 17:36         ` Greg KH [this message]
2020-08-18 17:36           ` Greg KH
2020-08-18 17:53           ` Muni Sekhar
2020-08-18 17:53             ` Muni Sekhar
2020-08-18 18:15             ` peter enderborg
2020-08-18 18:15               ` peter enderborg
2020-08-18 18:15               ` peter enderborg
2020-08-19 10:16               ` Muni Sekhar
2020-08-19 10:16                 ` Muni Sekhar
2020-08-19 10:21                 ` Bernd Petrovitsch
2020-08-19 10:21                   ` Bernd Petrovitsch
2020-08-19 14:36                   ` David Laight
2020-08-19 14:36                     ` David Laight
2020-08-19 10:42                 ` Greg KH
2020-08-19 10:42                   ` Greg KH
2020-08-19 16:43                   ` Valdis Klētnieks
2020-08-19 16:43                     ` Valdis Klētnieks
2020-08-19 16:47                     ` Greg KH
2020-08-19 16:47                       ` Greg KH
2021-04-29 21:32                 ` Arnaldo Carvalho de Melo
2021-04-29 21:32                   ` Arnaldo Carvalho de Melo
2020-08-25 17:06 ` Mulyadi Santosa

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