** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1853292
Title:
[20.04 FEAT] qeth: Support for HiperSockets Multi-Write
Status in Ubuntu on IBM z Systems:
Fix Committed
Status in linux package in Ubuntu:
Fix Committed
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.
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