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RE: [Xen-devel] Maximum number of domains and NR_IRQS

To: "Keir Fraser" <keir@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Maximum number of domains and NR_IRQS
From: "Carb, Brian A" <Brian.Carb@xxxxxxxxxx>
Date: Thu, 7 Dec 2006 15:55:13 -0500
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] Maximum number of domains and NR_IRQS
Thanks Keir - We changed NR_DYNIRQS to 768 and we were successfully able
to bring up 200 VMs.
Can we submit a patch to increase NR_DYNIRQS to 1024?


brian carb - unisys corporation - malvern, pa

-----Original Message-----
From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx] 
Sent: Thursday, December 07, 2006 11:48 AM
To: Puthiyaparambil, Aravindh; Ian Campbell; Carb, Brian A
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Keir Fraser
Subject: Re: [Xen-devel] Maximum number of domains and NR_IRQS




On 7/12/06 16:42, "Puthiyaparambil, Aravindh"
<aravindh.puthiyaparambil@xxxxxxxxxx> wrote:

>> That file is shadowed by include/asm-x86_64/mach-xen/asm/irq.h when 
>> build for Xen so you need to change that instead.
> 
> Ian,
> 
> You are right. We have been changing the wrong file. I think the file 
> in question is 
> linux-2.6.16.33-xen/include/asm-x86_64/mach-xen/irq_vectors.h. I guess

> we can bump up NR_DYNIRQS to 512 or 768?

Exactly.

 -- Keir



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