linux-kernel - Re: TLB evaluation for Linux

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Message-ID: <1759827749.278411220372073312.JavaMail.osg@osgjas03.cns.ufl.edu>
Date:	Tue, 2 Sep 2008 12:14:33 -0400 (EDT)
From:	"CHADHA,VINEET" <vineet@....edu>
To:	Arjan van de Ven <arjan@...radead.org>,
	"CHADHA,VINEET" <vineet@....edu>
Cc:	nickpiggin@...oo.com.au, linux-kernel@...r.kernel.org
Subject: Re: TLB evaluation for Linux


> I don't have a reference, but I'd not be surprised to see on 
> virtual
> machines for this to be even stronger; each invlpg would be a
> hypercall, compared to only one for the total flush.
> 

I agree that overhead could be more in virtual machines. Questions 
is that does VMs
are designed with evaluation of performance issues at 
micro-architetural level. Is this the best design for virtual 
machines or Linux ?

I don't see many numbers or published paper to make a claim.

Regards,
Vineet


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