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Bug 463862 - [LTC 6.0 FEAT] 201257:KVM high performance multinode support
Summary: [LTC 6.0 FEAT] 201257:KVM high performance multinode support
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm
Version: 6.0
Hardware: All
OS: All
high
high
Target Milestone: alpha
: 6.0
Assignee: Eduardo Habkost
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 356741 511888 512364 524565 554559 555199 555224
TreeView+ depends on / blocked
 
Reported: 2008-09-24 23:20 UTC by IBM Bug Proxy
Modified: 2010-11-10 21:24 UTC (History)
7 users (show)

Fixed In Version: qemu-kvm-0.12.1.2-2.1.el6
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-11-10 21:24:03 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description IBM Bug Proxy 2008-09-24 23:20:25 UTC 
=Comment: #0=================================================
Emily J. Ratliff <emilyr.com> - 2008-09-24 13:53 EDT
1. Feature Overview:
Feature Id:	[201257]
a. Name of Feature:	Xen high performance multinode support
b. Feature Description
Further improvements to the Xen hypervisor to become consistent with the base level kernel, i.e.
#cpu (256), amount of mem (6TB),  scaling/perf/numa enhancements, automatic cpu pinning.   
Customers are looking for improvements to limitation that are currently existent in XEN.

Additional Comments:	256 CPU Support (128 physical / 256 with HT) / 6TB Memory Support

2. Feature Details:
Sponsor:	xSeries
Architectures:
x86
x86_64

Arch Specificity: Both
Affects Core Kernel: Yes
Delivery Mechanism: Direct from community
Category:	Kernel
Request Type:	Kernel - Enhancement from Upstream
d. Upstream Acceptance:	In Progress
Sponsor Priority	1
f. Severity: High
IBM Confidential:	no
Code Contribution:	3rd party code
g. Component Version Target:	Xen Enhancements

3. Business Case
Our flagship multi-node product, x3950 M2, will support up to 96 cpus by the end of 2008.  We are
expecting this number to at least reach 256 logical threads in 2009/2010.  Wtih 16GB DIMMS coming
out, expect the max memory to be as high as 6TB.

4. Primary contact at Red Hat: 
John Jarvis
jjarvis

5. Primary contacts at Partner:
Project Management Contact:
Monte Knutson, mknutson.com, 877-894-1495

Technical contact(s):
Kevin Stansell, kstansel.com
Chris McDermott, mcdermoc.com

IBM Manager:
Julio Alvarez, julioa.com
Comment 1 IBM Bug Proxy 2008-10-24 00:20:52 UTC 
This should be a general requirement for the Virtualization environment for RHEL 6 (presumably KVM not Xen)  to support a platform/system capable of 256 cores/system threads and up to 6TB of memory, in a NUMA configuration.  If there's some split needed for those 2 components, or for any userland/ management/configuration/install pieces -- RH , please let us know.
Comment 3 Kevin Stansell 2009-11-18 21:34:31 UTC 
Yes, this should all be against KVM and libvirt, not Xen. :)
Comment 4 Dor Laor 2010-01-18 11:43:12 UTC 
Is it only physical constrains? Any virtual ones? For physical we should be fine.
Comment 8 John Jarvis 2010-08-27 15:23:30 UTC 
IBM, please confirm this is fixed and if so, set the Verified field to "IBM"
Comment 9 Kevin Stansell 2010-09-10 14:19:13 UTC 
We will follow the core RHEL6 limits here for KVM host support.  Closing.
Comment 10 releng-rhel@redhat.com 2010-11-10 21:24:03 UTC 
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.
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