[20.04 FEAT] qeth: Support for HiperSockets Multi-Write
Bug #1853292 reported by
bugproxy
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
Medium
|
Frank Heimes | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Skipper Bug Screeners |
Bug Description
By default, HiperSockets transfer a single 64KB buffer at a time using the SIGA-w instruction. Multi-Write allows to transfer multiple 64KB buffers with a single SIGA-wm instruction. This reduces CPU utilization, speeds up the data transfer, and reduces Receiver-side interrupts
Multi-Write is available since z10.
Business Value
Performance improvement, CPU efficiency.
CVE References
tags: | added: architecture-s39064 bugnameltc-179227 severity-high targetmilestone-inin2004 |
Changed in ubuntu: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
Changed in ubuntu-z-systems: | |
status: | In Progress → Fix Committed |
Changed in ubuntu-z-systems: | |
status: | Fix Committed → Fix Released |
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What is the planned target kernel this is going to become upstream accepted?
Changing to Incomplete for now.