 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] Are there any tools to calculate the cost of a VM exit
| To: | veerasena reddy <veeruyours@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Are there any tools to calculate the cost of a VM exit |
| 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 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:user-agent:date:subject:from:to:message-id :thread-topic:thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; bh=E+sYyuLpG2QLlOlbVdTCa3AA8Q5+acScZCymP9xhRVk=; b=G2xC1KzMatZjFk7MW873Cl/bspag3uooBqZYtkvap8h+rBb6JkCXLi9x32cpALA7m1 KDjL4iMXdN87wJSKBxHQ0xLkadr/TA2PZluxG7ffGTJxgyRljVOzPNrEadAtsvf2KlEP uf5IQkAmp/FwGcbvt7t6QZOoLBFkST07nZoJo= |
| 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= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <BANLkTi=z8uDqLYGsE-oKVD181hGm6OALxw@xxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | Acwk4S0cQPxNx6vLH0Oh7RoEN02lww== |
| Thread-topic: | [Xen-devel] Are there any tools to calculate the cost of a VM exit |
| User-agent: | Microsoft-Entourage/12.29.0.110113 |
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 |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] Is there any range of XEN hypercalls reserved for vendor specific, Keir Fraser |
|---|---|
| Next by Date: | [Xen-devel] Stable candidate? xen: events: do not unmask event channels on resume, Stefan Bader |
| Previous by Thread: | [Xen-devel] Are there any tools to calculate the cost of a VM exit, veerasena reddy |
| Next by Thread: | [Xen-devel] How to write protect a HVM guest page and handle the writes to the page in hypervisor, veerasena reddy |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
