Xen project Mailing List

Re: [Xen-devel] Are there any tools to calculate the cost of a VM exit

To: veerasena reddy <veeruyours@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>

From: Keir Fraser <keir.xen@xxxxxxxxx>

Date: Tue, 07 Jun 2011 08:04:43 +0100

Cc:

Delivery-date: Tue, 07 Jun 2011 00:05:45 -0700

Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=user-agent:date:subject:from:to:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=oVrNz1bbYkKP3ZWe6ZG7WA3A8vqYP7bgaH2h3hLlKX8c4vb5rgCSfOzR/Ask+JQr6j yyMcCxQj0F5f95JRiffANU92gC0zU+N8M+AIhKQVgYVnItY0WWdnP/LVlk7XlpltA3+S MJ77vorih3AeddqN9ICzc8C3HsiVHbhQJGbPw=

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Thread-index: Acwk4S0cQPxNx6vLH0Oh7RoEN02lww==

Thread-topic: [Xen-devel] Are there any tools to calculate the cost of a VM exit

On 07/06/2011 07:33, "veerasena reddy" <veeruyours@xxxxxxxxx> wrote: > Hi, > > I am looking to add a new hypercall to XEN-3.4.3 and invoke this new hypercall > very often (may be 50 to 500 thousands of times a sec) from a HVM guest. > I would like to see the cost of this to tradeoff with performance. > > Could you please advice if there are tools for this or any other method that i > can use? In the HVM guest: gettimeofday() (or RDTSC, or any other handy timestamp) <call hypercall in a tight loop 10,000,000 times> gettimeofday() (or equiv, as above) -- Keir > Thanks in advance. > > Regards, > VSR. > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.