Red Hat Bugzilla – Bug 463621
[LTC 6.0 FEAT] 201204:Greater than 2 way SMT
Last modified: 2009-09-23 18:11:19 EDT
=Comment: #0================================================= Emily J. Ratliff <emilyr@us.ibm.com> - 2008-09-16 18:07 EDT 1. Feature Overview: Feature Id: [201204] a. Name of Feature: Greater than 2 way SMT b. Feature Description SMT is the ability to run more than 1 execution thread per cpu core. Currently up to 2 execution threads per core are supported, this would increase the number of execution threads per core the kernel would support on POWER. Additional Comments: Code Upstream 2. Feature Details: Sponsor: PPC - P Architectures: ppc64 Arch Specificity: Purely Arch Specific Code Affects Core Kernel: Yes Delivery Mechanism: Direct from community Category: Performance Request Type: Kernel - Enhancement from IBM d. Upstream Acceptance: Accepted Sponsor Priority 1 f. Severity: High IBM Confidential: no Code Contribution: IBM code g. Component Version Target: some in 2.6.25 exploitation in 2.6.27 Performance Assistance: yes 3. Business Case Increased performance. 4. Primary contact at Red Hat: John Jarvis jjarvis@redhat.com 5. Primary contacts at Partner: Project Management Contact: Michael Hohnbaum, hbaum@us.ibm.com, 503-578-5486 Technical contact(s): Joel Schopp, jschopp@us.ibm.com Paul Mackerras, pmac@au1.ibm.com
RHEL 6 will include at least a 2.6.27 kernel, so this should not be a problem. The feature requested has already been accepted into the upstream code base planned for the next major release of Red Hat Enterprise Linux. When the next milestone release of Red Hat Enterprise Linux 6 is available, please verify that the feature requested is present and functioning as desired.
this is in 2.6.25 sha1 id: 8d089085a4e6d8a91c954130cb4caebd50788a08
Closing - included in Red Hat Enterprise Linux 6.