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Cisco Bug: CSCvu11155 - 2020.1 IPU Microcode update to fix performance degradation

Last Modified

Jul 09, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

4.0(4g)BS16 4.1(1b)BS2

Description (partial)

Symptom:
Upgrading to one of the System BIOS versions included in UCSM 4.0(4h), UCSM 4.1(1c), and CIMC 4.0(4k) releases may cause a performance degradation on certain workloads. The workloads which are highly dependent on maximum system performance may be impacted. it does not otherwise affect any system functionalities.

Conditions:
The performance degradation may occur only on UCS B, C, and S series M5 platforms with second Generation Intel® Xeon® Processor Scalable Processors running any of the following affected BIOS versions.

UCSM 4.0(4h):

C240M5.4.0.4r.0
C220M5.4.0.4p.0
B200M5.4.0.4l.0
B480M5.4.0.4m.0
S3X60M5.4.0.4o.0

UCSM 4.1(1C):

C220M5.4.1.1c.0
C240M5.4.1.1c.0
B200M5.4.1.1c.0
B480M5.4.1.1c.0
S3X60M5.4.1.1c.0

CIMC 4.0(4k):

C240M5.4.0.4r.0
C220M5.4.0.4p.0
S3X60M5.4.0.4o.0
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