[Bug 254513] virtio_random: random_harvestq spinning on a CPU with Q35 virtio random device
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Date: Fri, 17 Sep 2021 17:02:19 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254513 --- Comment #28 from Chris Collins <email@example.com> --- Ok I tested the following byte limits 1024 2048 4096 40960 0 (unlimited) In terms of reported cpu usage on proxmox graphs, 2048 and upwards are all the same, also same with unlimited, so if proxmox even went a bit higher people probably would not have noticed. The peak usage reported inside the FreeBSD guest is higher on 2048 and vs 4096, and likewise 4096 vs 40960 and unlimited. But they seem to average out the same. I will report this to proxmox. Also even with unlimited, The idle system cpu usage is still about 3x vs without virtio rng (0.3% vs 0.1%), so seems to be less efficient but does drop to a level where most people wont notice it. -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.