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From: Matthew Wilcox <willy@infradead.org>
To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Sedat Dilek <sedat.dilek@gmail.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	"Luck, Tony" <tony.luck@intel.com>,
	"Torvalds, Linus" <torvalds@linux-foundation.org>,
	Mateusz Guzik <mjguzik@gmail.com>,
	linux-arch <linux-arch@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
	Jan Glauber <jan.glauber@gmail.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: ia64 removal (was: Re: lockref scalability on x86-64 vs cpu_relax)
Date: Mon, 16 Jan 2023 13:28:11 +0000	[thread overview]
Message-ID: <Y8VQ612fm0Wi4j4w@casper.infradead.org> (raw)
In-Reply-To: <a6dda4b2-1124-7189-ecd8-9cf85c1b790d@physik.fu-berlin.de>

On Mon, Jan 16, 2023 at 10:41:14AM +0100, John Paul Adrian Glaubitz wrote:
> On 1/15/23 01:27, Matthew Wilcox wrote:
> > More useful perhaps is to look at https://popcon.debian.org/
> > 
> > There are three machines reporting popcon results.  It's dead.
> 
> It's an opt-in mechanism that reports 190,000 machines running Debian
> on x86_64. Do you think that there are only 190,000 servers world-wide
> running Debian?

No.  I think there are so few ia64 machines still in operation that the
effort required to continue to support them is now too high relative
to the benefits.  We've dropped support for hardware that still exists
before, and we'll do it again.  The only question is when.

I still have two ia64 machines in my basement.  I've turned one of them
on once since 2009.  And that was because I had a bug I needed to track
down and fix (2018, commits 4b664e739f77 and 2879b65f9de8).

WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <willy@infradead.org>
To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: linux-arch <linux-arch@vger.kernel.org>,
	Mateusz Guzik <mjguzik@gmail.com>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"Luck, Tony" <tony.luck@intel.com>,
	"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
	Sedat Dilek <sedat.dilek@gmail.com>,
	Jan Glauber <jan.glauber@gmail.com>,
	"Torvalds, Linus" <torvalds@linux-foundation.org>,
	Ard Biesheuvel <ardb@kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: ia64 removal (was: Re: lockref scalability on x86-64 vs cpu_relax)
Date: Mon, 16 Jan 2023 13:28:11 +0000	[thread overview]
Message-ID: <Y8VQ612fm0Wi4j4w@casper.infradead.org> (raw)
In-Reply-To: <a6dda4b2-1124-7189-ecd8-9cf85c1b790d@physik.fu-berlin.de>

On Mon, Jan 16, 2023 at 10:41:14AM +0100, John Paul Adrian Glaubitz wrote:
> On 1/15/23 01:27, Matthew Wilcox wrote:
> > More useful perhaps is to look at https://popcon.debian.org/
> > 
> > There are three machines reporting popcon results.  It's dead.
> 
> It's an opt-in mechanism that reports 190,000 machines running Debian
> on x86_64. Do you think that there are only 190,000 servers world-wide
> running Debian?

No.  I think there are so few ia64 machines still in operation that the
effort required to continue to support them is now too high relative
to the benefits.  We've dropped support for hardware that still exists
before, and we'll do it again.  The only question is when.

I still have two ia64 machines in my basement.  I've turned one of them
on once since 2009.  And that was because I had a bug I needed to track
down and fix (2018, commits 4b664e739f77 and 2879b65f9de8).

WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <willy@infradead.org>
To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Sedat Dilek <sedat.dilek@gmail.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	"Luck, Tony" <tony.luck@intel.com>,
	"Torvalds, Linus" <torvalds@linux-foundation.org>,
	Mateusz Guzik <mjguzik@gmail.com>,
	linux-arch <linux-arch@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
	Jan Glauber <jan.glauber@gmail.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: ia64 removal (was: Re: lockref scalability on x86-64 vs cpu_relax)
Date: Mon, 16 Jan 2023 13:28:11 +0000	[thread overview]
Message-ID: <Y8VQ612fm0Wi4j4w@casper.infradead.org> (raw)
In-Reply-To: <a6dda4b2-1124-7189-ecd8-9cf85c1b790d@physik.fu-berlin.de>

On Mon, Jan 16, 2023 at 10:41:14AM +0100, John Paul Adrian Glaubitz wrote:
> On 1/15/23 01:27, Matthew Wilcox wrote:
> > More useful perhaps is to look at https://popcon.debian.org/
> > 
> > There are three machines reporting popcon results.  It's dead.
> 
> It's an opt-in mechanism that reports 190,000 machines running Debian
> on x86_64. Do you think that there are only 190,000 servers world-wide
> running Debian?

No.  I think there are so few ia64 machines still in operation that the
effort required to continue to support them is now too high relative
to the benefits.  We've dropped support for hardware that still exists
before, and we'll do it again.  The only question is when.

I still have two ia64 machines in my basement.  I've turned one of them
on once since 2009.  And that was because I had a bug I needed to track
down and fix (2018, commits 4b664e739f77 and 2879b65f9de8).

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-01-16 13:28 UTC|newest]

Thread overview: 108+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-12 23:36 lockref scalability on x86-64 vs cpu_relax Mateusz Guzik
2023-01-13  0:13 ` Linus Torvalds
2023-01-13  0:13   ` Linus Torvalds
2023-01-13  0:13   ` Linus Torvalds
2023-01-13  0:30   ` Luck, Tony
2023-01-13  0:30     ` Luck, Tony
2023-01-13  0:30     ` Luck, Tony
2023-01-13  0:45     ` Linus Torvalds
2023-01-13  0:45       ` Linus Torvalds
2023-01-13  0:45       ` Linus Torvalds
2023-01-13  7:55     ` ia64 removal (was: Re: lockref scalability on x86-64 vs cpu_relax) Ard Biesheuvel
2023-01-13  7:55       ` Ard Biesheuvel
2023-01-13  7:55       ` Ard Biesheuvel
2023-01-13 16:17       ` Luck, Tony
2023-01-13 16:17         ` Luck, Tony
2023-01-13 16:17         ` Luck, Tony
2023-01-13 20:49       ` Jessica Clarke
2023-01-13 20:49         ` Jessica Clarke
2023-01-13 20:49         ` Jessica Clarke
2023-01-13 21:03         ` Luck, Tony
2023-01-13 21:03           ` Luck, Tony
2023-01-13 21:03           ` Luck, Tony
2023-01-13 21:04           ` Jessica Clarke
2023-01-13 21:04             ` Jessica Clarke
2023-01-13 21:04             ` Jessica Clarke
2023-01-13 21:05       ` John Paul Adrian Glaubitz
2023-01-13 21:05         ` John Paul Adrian Glaubitz
2023-01-13 21:05         ` John Paul Adrian Glaubitz
2023-01-13 23:25         ` Ard Biesheuvel
2023-01-13 23:25           ` Ard Biesheuvel
2023-01-13 23:25           ` Ard Biesheuvel
2023-01-14 11:24           ` Sedat Dilek
2023-01-14 11:24             ` Sedat Dilek
2023-01-14 11:24             ` Sedat Dilek
2023-01-14 11:28             ` Sedat Dilek
2023-01-14 11:28               ` Sedat Dilek
2023-01-14 11:28               ` Sedat Dilek
2023-01-15  0:27               ` Matthew Wilcox
2023-01-15  0:27                 ` Matthew Wilcox
2023-01-15  0:27                 ` Matthew Wilcox
2023-01-15 12:04                 ` Sedat Dilek
2023-01-15 12:04                   ` Sedat Dilek
2023-01-15 12:04                   ` Sedat Dilek
2023-01-16  9:42                   ` John Paul Adrian Glaubitz
2023-01-16  9:42                     ` John Paul Adrian Glaubitz
2023-01-16  9:42                     ` John Paul Adrian Glaubitz
2023-01-16  9:41                 ` John Paul Adrian Glaubitz
2023-01-16  9:41                   ` John Paul Adrian Glaubitz
2023-01-16  9:41                   ` John Paul Adrian Glaubitz
2023-01-16 13:28                   ` Matthew Wilcox [this message]
2023-01-16 13:28                     ` Matthew Wilcox
2023-01-16 13:28                     ` Matthew Wilcox
2023-01-16  9:40               ` John Paul Adrian Glaubitz
2023-01-16  9:40                 ` John Paul Adrian Glaubitz
2023-01-16  9:40                 ` John Paul Adrian Glaubitz
2023-01-16  9:37             ` John Paul Adrian Glaubitz
2023-01-16  9:37               ` John Paul Adrian Glaubitz
2023-01-16  9:37               ` John Paul Adrian Glaubitz
2023-01-16  9:32           ` John Paul Adrian Glaubitz
2023-01-16  9:32             ` John Paul Adrian Glaubitz
2023-01-16  9:32             ` John Paul Adrian Glaubitz
2023-01-16 10:09             ` Ard Biesheuvel
2023-01-16 10:09               ` Ard Biesheuvel
2023-01-16 10:09               ` Ard Biesheuvel
2023-01-13  1:12   ` lockref scalability on x86-64 vs cpu_relax Mateusz Guzik
2023-01-13  1:12     ` Mateusz Guzik
2023-01-13  1:12     ` Mateusz Guzik
2023-01-13  4:08     ` Linus Torvalds
2023-01-13  4:08       ` Linus Torvalds
2023-01-13  4:08       ` Linus Torvalds
2023-01-13  9:46     ` Will Deacon
2023-01-13  9:46       ` Will Deacon
2023-01-13  9:46       ` Will Deacon
2023-01-13  3:20   ` Nicholas Piggin
2023-01-13  3:20     ` Nicholas Piggin
2023-01-13  3:20     ` Nicholas Piggin
2023-01-13  4:15     ` Linus Torvalds
2023-01-13  4:15       ` Linus Torvalds
2023-01-13  4:15       ` Linus Torvalds
2023-01-13  5:36       ` Nicholas Piggin
2023-01-13  5:36         ` Nicholas Piggin
2023-01-13  5:36         ` Nicholas Piggin
2023-01-16 14:08     ` Memory transaction instructions David Howells
2023-01-16 14:08       ` David Howells
2023-01-16 15:09       ` Matthew Wilcox
2023-01-16 15:09         ` Matthew Wilcox
2023-01-16 15:09         ` Matthew Wilcox
2023-01-16 16:59       ` Linus Torvalds
2023-01-16 16:59         ` Linus Torvalds
2023-01-16 16:59         ` Linus Torvalds
2023-01-18  9:05       ` David Howells
2023-01-18  9:05         ` David Howells
2023-01-18  9:05         ` David Howells
2023-01-19  1:41         ` Nicholas Piggin
2023-01-19  1:41           ` Nicholas Piggin
2023-01-19  1:41           ` Nicholas Piggin
2023-01-13 10:23   ` lockref scalability on x86-64 vs cpu_relax Peter Zijlstra
2023-01-13 10:23     ` Peter Zijlstra
2023-01-13 10:23     ` Peter Zijlstra
2023-01-13 18:44   ` [PATCH] lockref: stop doing cpu_relax in the cmpxchg loop Mateusz Guzik
2023-01-13 18:44     ` Mateusz Guzik
2023-01-13 18:44     ` Mateusz Guzik
2023-01-13 21:47     ` Luck, Tony
2023-01-13 21:47       ` Luck, Tony
2023-01-13 21:47       ` Luck, Tony
2023-01-13 23:31       ` Linus Torvalds
2023-01-13 23:31         ` Linus Torvalds
2023-01-13 23:31         ` Linus Torvalds

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