Aleksei Sviridkin
73b8afc256
test(e2e): run tenant workers on one vCPU with CPU headroom above it
...
Under a two-vCPU worker both vCPU threads burn 1.4 to 1.8 cores between
them while the guest kernel never gets past SMP bringup, and raising the
CFS ceiling from two cores to three changed neither the burn nor the
progress, so the spin is between the two vCPUs, not against the quota.
A single-vCPU guest has no sibling to spin on. The ceiling of two keeps
the QEMU emulator and IO threads from eating into the one core the
guest computes with, and the request keeps scheduling where the workers
always were.
Assisted-By: Claude <noreply@anthropic.com >
Signed-off-by: Aleksei Sviridkin <3811295@gmail.com >
2026-08-17 03:09:04 +03:00
..
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