linux-kernel - Re: [PATCH v3 6/7] KVM: VMX: runtime knobs for dynamic PLE window

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Message-ID: <20140821210337.GB30423@potion.brq.redhat.com>
Date:	Thu, 21 Aug 2014 23:03:37 +0200
From:	Radim Krčmář <rkrcmar@...hat.com>
To:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	Gleb Natapov <gleb@...nel.org>,
	Vinod Chegu <chegu_vinod@...com>,
	Hui-Zhi Zhao <hui-zhi.zhao@...com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Lisa Mitchell <lisa.mitchell@...com>
Subject: Re: [PATCH v3 6/7] KVM: VMX: runtime knobs for dynamic PLE window

2014-08-22 00:47+0530, Raghavendra K T:
> Positive thing about able to change default grow/shrink value is the
> flexibility of tuning ple window to different workloads and different
> number of cpus.
> 
> But is it that a value of shrink = 1 and grow > 1 is problematic ?
> (running a undercommit workload and then overcommit workload)

Yeah, could have mentioned it in commit message, but I hope that my
previous email explained it.  (1 = don't shrink, design decision :)
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