From: Paolo Bonzini <pbonzini@redhat.com>
To: Rik van Riel <riel@redhat.com>,
Jan Kiszka <jan.kiszka@siemens.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: rkrcmar@redhat.com, mtosatti@redhat.com
Subject: Re: [PATCH RFC] kvm: x86: add halt_poll module parameter
Date: Thu, 05 Feb 2015 21:14:36 +0100 [thread overview]
Message-ID: <54D3CF2C.6030203@redhat.com> (raw)
In-Reply-To: <54D3C314.3070903@redhat.com>
On 05/02/2015 20:23, Rik van Riel wrote:
>> > 3) long term anyway we want it to auto tune, which is better than tuning
>> > it per-VM.
> We may want to auto tune it per VM.
We may even want to auto tune it per VCPU.
> However, if we make auto tuning work well, I do not
> think we want to expose a user visible tunable per
> VM, and commit to keeping that kind of interface
> around forever.
Exactly. We probably want module parameters to tune the minimum/maximum
values (which includes the special cases of disabling polling
altogether, and disabling the autotuning while leaving polling enabled),
but committing to a per-VM interface is premature.
Paolo
next prev parent reply other threads:[~2015-02-05 20:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-05 16:05 [PATCH RFC] kvm: x86: add halt_poll module parameter Paolo Bonzini
2015-02-05 17:46 ` Rik van Riel
2015-02-05 17:53 ` Radim Krčmář
2015-02-05 19:18 ` Paolo Bonzini
2015-02-05 18:55 ` Jan Kiszka
2015-02-05 19:20 ` Paolo Bonzini
2015-02-05 19:23 ` Rik van Riel
2015-02-05 20:14 ` Paolo Bonzini [this message]
2015-02-05 20:39 ` David Matlack
2015-02-05 21:24 ` Paolo Bonzini
2015-02-05 23:34 ` Marcelo Tosatti
2015-02-05 23:47 ` Marcelo Tosatti
2015-02-06 7:50 ` Paolo Bonzini
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