On Mon, Apr 13, 2026 at 11:11:15PM +0800, Ming Lei wrote: > But typical applications aren't supposed to submit IOs from these > isolated CPUs, so in reality, it isn't a big deal.
Hi Ming, While that may be true for general-purpose workloads, it is a fundamentally incorrect assumption for the highly specialised environments that actually rely on strict CPU isolation, such as High-Frequency Trading (HFT). The requirement in these strict environments is not that the isolated CPU performs zero I/O. Rather, the requirement is that the isolated CPU must be shielded from the unpredictable latency of the hardware completion interrupt. Kind regards, -- Aaron Tomlin
signature.asc
Description: PGP signature
