From: Linus Torvalds <torvalds@linux-foundation.org>
To: David Lang <david@lang.hm>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Langsdorf <mlangsdo@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: Linux 3.19-rc3
Date: Fri, 9 Jan 2015 19:06:57 -0800 [thread overview]
Message-ID: <CA+55aFy+7+-8CHpmOjRXh1txpABRK3PC+7yZ+fESVAmveOWDyw@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1501091849250.3078@nftneq.ynat.uz>
On Fri, Jan 9, 2015 at 6:51 PM, David Lang <david@lang.hm> wrote:
>
> what about a dedicated virtualization host (where your workload is a handful
> of virtual machines), would the file cache issue still be overwelming, even
> though it's the virtual machines accessing things?
How much filesystem caches does the host need or use? It can range
from basically zero ("pure" hypervisor host with no filesystem at all)
to 100% (virtual filesystem in all the clients with the host doing all
the real work).
I dunno. I do know that you definitely don't want to haev a
desktop/workstation with 64kB pages.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: torvalds@linux-foundation.org (Linus Torvalds)
To: linux-arm-kernel@lists.infradead.org
Subject: Linux 3.19-rc3
Date: Fri, 9 Jan 2015 19:06:57 -0800 [thread overview]
Message-ID: <CA+55aFy+7+-8CHpmOjRXh1txpABRK3PC+7yZ+fESVAmveOWDyw@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1501091849250.3078@nftneq.ynat.uz>
On Fri, Jan 9, 2015 at 6:51 PM, David Lang <david@lang.hm> wrote:
>
> what about a dedicated virtualization host (where your workload is a handful
> of virtual machines), would the file cache issue still be overwelming, even
> though it's the virtual machines accessing things?
How much filesystem caches does the host need or use? It can range
from basically zero ("pure" hypervisor host with no filesystem at all)
to 100% (virtual filesystem in all the clients with the host doing all
the real work).
I dunno. I do know that you definitely don't want to haev a
desktop/workstation with 64kB pages.
Linus
next prev parent reply other threads:[~2015-01-10 3:06 UTC|newest]
Thread overview: 154+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-06 1:46 Linux 3.19-rc3 Linus Torvalds
2015-01-06 2:46 ` Dave Jones
2015-01-06 8:18 ` Takashi Iwai
2015-01-06 9:45 ` Jiri Kosina
2015-01-08 12:51 ` Mark Langsdorf
2015-01-08 12:51 ` Mark Langsdorf
2015-01-08 13:45 ` Catalin Marinas
2015-01-08 13:45 ` Catalin Marinas
2015-01-08 17:29 ` Mark Langsdorf
2015-01-08 17:29 ` Mark Langsdorf
2015-01-08 17:34 ` Catalin Marinas
2015-01-08 17:34 ` Catalin Marinas
2015-01-08 18:48 ` Mark Langsdorf
2015-01-08 18:48 ` Mark Langsdorf
2015-01-08 19:21 ` Linus Torvalds
2015-01-08 19:21 ` Linus Torvalds
2015-01-09 23:27 ` Catalin Marinas
2015-01-09 23:27 ` Catalin Marinas
2015-01-10 0:35 ` Kirill A. Shutemov
2015-01-10 0:35 ` Kirill A. Shutemov
2015-01-10 2:27 ` Linus Torvalds
2015-01-10 2:27 ` Linus Torvalds
2015-01-10 2:51 ` David Lang
2015-01-10 2:51 ` David Lang
2015-01-10 3:06 ` Linus Torvalds [this message]
2015-01-10 3:06 ` Linus Torvalds
2015-01-10 10:46 ` Andreas Mohr
2015-01-10 10:46 ` Andreas Mohr
2015-01-10 19:42 ` Linus Torvalds
2015-01-10 19:42 ` Linus Torvalds
2015-01-13 3:33 ` Rik van Riel
2015-01-13 3:33 ` Rik van Riel
2015-01-13 10:28 ` Catalin Marinas
2015-01-13 10:28 ` Catalin Marinas
2015-01-10 3:17 ` Tony Luck
2015-01-10 3:17 ` Tony Luck
2015-01-10 20:16 ` Arnd Bergmann
2015-01-10 20:16 ` Arnd Bergmann
2015-01-10 21:00 ` Linus Torvalds
2015-01-10 21:00 ` Linus Torvalds
2015-01-10 21:36 ` Arnd Bergmann
2015-01-10 21:36 ` Arnd Bergmann
2015-01-10 21:48 ` Linus Torvalds
2015-01-10 21:48 ` Linus Torvalds
2015-01-12 11:37 ` Kirill A. Shutemov
2015-01-12 11:37 ` Kirill A. Shutemov
2015-01-12 12:18 ` Catalin Marinas
2015-01-12 12:18 ` Catalin Marinas
2015-01-12 13:57 ` Arnd Bergmann
2015-01-12 13:57 ` Arnd Bergmann
2015-01-12 14:23 ` Catalin Marinas
2015-01-12 14:23 ` Catalin Marinas
2015-01-12 15:42 ` Arnd Bergmann
2015-01-12 15:42 ` Arnd Bergmann
2015-01-12 11:53 ` Catalin Marinas
2015-01-12 11:53 ` Catalin Marinas
2015-01-12 13:15 ` Arnd Bergmann
2015-01-12 13:15 ` Arnd Bergmann
2015-01-08 15:08 ` Michal Hocko
2015-01-08 15:08 ` Michal Hocko
2015-01-08 15:08 ` Michal Hocko
2015-01-08 16:37 ` Mark Langsdorf
2015-01-08 16:37 ` Mark Langsdorf
2015-01-08 16:37 ` Mark Langsdorf
2015-01-09 15:56 ` Michal Hocko
2015-01-09 15:56 ` Michal Hocko
2015-01-09 15:56 ` Michal Hocko
2015-01-09 12:13 ` Mark Rutland
2015-01-09 12:13 ` Mark Rutland
2015-01-09 14:19 ` Steve Capper
2015-01-09 14:19 ` Steve Capper
2015-01-09 14:27 ` Mark Langsdorf
2015-01-09 14:27 ` Mark Langsdorf
2015-01-09 17:57 ` Mark Rutland
2015-01-09 17:57 ` Mark Rutland
2015-01-09 18:37 ` Marc Zyngier
2015-01-09 18:37 ` Marc Zyngier
2015-01-09 19:43 ` Will Deacon
2015-01-09 19:43 ` Will Deacon
2015-01-10 3:29 ` Laszlo Ersek
2015-01-10 3:29 ` Laszlo Ersek
2015-01-10 4:39 ` Linus Torvalds
2015-01-10 4:39 ` Linus Torvalds
2015-01-10 13:37 ` Will Deacon
2015-01-10 13:37 ` Will Deacon
2015-01-10 19:47 ` Laszlo Ersek
2015-01-10 19:47 ` Laszlo Ersek
2015-01-10 19:56 ` Linus Torvalds
2015-01-10 19:56 ` Linus Torvalds
2015-01-10 20:08 ` Laszlo Ersek
2015-01-10 20:08 ` Laszlo Ersek
2015-01-10 19:51 ` Linus Torvalds
2015-01-10 19:51 ` Linus Torvalds
2015-01-12 12:42 ` Will Deacon
2015-01-12 12:42 ` Will Deacon
2015-01-12 13:22 ` Mark Langsdorf
2015-01-12 13:22 ` Mark Langsdorf
2015-01-12 19:03 ` Dave Hansen
2015-01-12 19:03 ` Dave Hansen
2015-01-12 19:06 ` Linus Torvalds
2015-01-12 19:06 ` Linus Torvalds
2015-01-12 19:07 ` Linus Torvalds
2015-01-12 19:07 ` Linus Torvalds
2015-01-12 19:24 ` Will Deacon
2015-01-12 19:24 ` Will Deacon
2015-01-10 15:22 ` Kyle McMartin
2015-01-10 15:22 ` Kyle McMartin
2015-01-06 4:49 Sedat Dilek
2015-01-06 9:34 ` Sedat Dilek
2015-01-06 9:56 ` Takashi Iwai
2015-01-06 10:06 ` Sedat Dilek
2015-01-06 10:28 ` Takashi Iwai
2015-01-06 10:31 ` Sedat Dilek
2015-01-06 10:37 ` Takashi Iwai
2015-01-06 10:42 ` Sedat Dilek
2015-01-06 9:59 ` Peter Zijlstra
2015-01-06 9:40 ` Peter Zijlstra
2015-01-06 9:42 ` Sedat Dilek
2015-01-06 9:57 ` Sedat Dilek
2015-01-06 10:06 ` Peter Zijlstra
2015-01-06 10:18 ` Sedat Dilek
2015-01-06 11:01 ` Peter Zijlstra
2015-01-06 11:07 ` Kent Overstreet
2015-01-06 11:25 ` Sedat Dilek
2015-01-06 11:40 ` Kent Overstreet
2015-01-06 12:51 ` Sedat Dilek
2015-01-06 11:42 ` Peter Zijlstra
2015-01-06 11:48 ` Peter Zijlstra
2015-01-06 12:01 ` Kent Overstreet
2015-01-06 12:20 ` Peter Zijlstra
2015-01-06 12:45 ` Kent Overstreet
2015-01-06 12:55 ` Peter Hurley
2015-01-06 17:38 ` Paul E. McKenney
2015-01-06 17:58 ` Peter Hurley
2015-01-06 19:25 ` Paul E. McKenney
2015-01-06 19:57 ` Peter Hurley
2015-01-06 20:47 ` Paul E. McKenney
2015-01-20 0:30 ` Paul E. McKenney
2015-01-20 14:03 ` Peter Hurley
2015-02-02 16:11 ` Paul E. McKenney
2015-02-02 19:03 ` Peter Hurley
2015-02-02 19:33 ` Paul E. McKenney
2015-01-06 11:56 ` Kent Overstreet
2015-01-06 12:16 ` Peter Zijlstra
2015-01-06 12:43 ` Kent Overstreet
2015-01-06 13:03 ` Peter Zijlstra
2015-01-06 13:28 ` Kent Overstreet
2015-01-13 15:23 ` Peter Zijlstra
2015-01-06 11:58 ` Peter Zijlstra
2015-01-06 12:18 ` Kent Overstreet
2015-01-16 16:56 ` Peter Hurley
2015-01-16 17:00 ` Chris Mason
2015-01-16 18:58 ` Peter Hurley
2015-01-06 10:29 ` Sedat Dilek
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