** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Jammy)
Assignee: (unassigned) => Philip Cox (philcox)
** Changed in: linux (Ubuntu Jammy)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/2052817
Title:
cpufreq: intel_pstate: Enable HWP IO boost for all servers
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Jammy:
In Progress
Bug description:
This is a public version of https://bugs.launchpad.net/bugs/2009321
Backport cpufreq: intel_pstate: Enable HWP IO boost for all servers
[upstream 1f5e62f5fb217f2c1e003236be7d03cf606c26c4 (merged in 6.4)] to
jammy.
[Impact]
Currently there is a CPU model check for Skylake desktop and server
along with the ACPI PM profile for performance and enterprise servers
to enable IO boost. Patch removes the CPU model check, so that all
current server models enable HWP IO boost by default.
The HWP IO boost results in improvements for IO performance on both
Ice Lake and Sapphire Rapid servers.
Phoronix review: https://www.phoronix.com/news/Intel-ICL-SPR-IO-Perf-
Boost
Upstream review Link: https://lore.kernel.org/linux-
pm/20230303041411.3161780-1-srinivas.pandruv...@linux.intel.com/
[Fix]
Upstream patch:
cpufreq: intel_pstate: Enable HWP IO boost for all servers
1f5e62f5fb217f2c1e003236be7d03cf606c26c4
was merged to fix this. This will be back porting it to jammy.
[Test Plan]
I have tested this code, as has Intel.
[Where problems could occur]
The risk for regression is low. The change is fairly narrow, and has
been upstreamed for some time.
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