Operational Defect Database
BugZero found this defect 349 days ago.
Data sources
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Hewlett Packard Enterprise | a00133019en_us
Advisory: HPE ProLiant DL560 Gen11 Server - Platforms Running System ROM 1.30 May Experience Performance Degradation on Memory Bound Workloads
Last update date:
12/11/2023
Affected products:
HPE ProLiant DL560 Gen11
Affected releases:
No affected releases provided.
Fixed releases:
No fixed releases provided.
Description:
Info
HPE ProLiant DL560 Gen11 servers are configured by design with only one Ultra Path Interconnect (UPI) link between processors; with the Opportunistic Snoop Broadcast (OSB) feature enabled and running System ROM 1.30, the snoop broadcast traffic over UPI for local streaming writes, or similar types of workloads, may overload the UPI link, resulting in a performance degradation. This occurs because the traffic over UPI will have to compete with the snoop broadcast traffic, creating a bottleneck in the UPI, which can slow down the memory transactions.
Scope
HPE ProLiant DL560 Gen11 servers.
Resolution
Update the System ROM to version 1.36 (or later), which offers the ability to control the OSB feature setting (OSB Local/Remote Read). This setting is located under System Utilities > System Configuration > BIOS/Platform Configuration (RBSU) > Power and Performance Options > Intel UPI Options. After updating to this version of System ROM, this option would be Disabled by default. For workloads that may benefit from the OSB feature, this setting can be set to "Auto", to enable it. RECEIVE PROACTIVE UPDATES : Receive support alerts (such as Customer Advisories), as well as updates on drivers, software, firmware, and customer replaceable components, proactively in your e-mail through HPE Support Alerts. Sign up for Support Alerts at the following URL: HPE Email Preference Center. NAVIGATION TIP: For hints on navigating HPE.com to locate the latest drivers, patches and other support software downloads, refer to the Navigation Tips document. SEARCH TIP: For hints on locating similar documents on HPE.com, refer to the Search Tips document.
