On this platform strace still confirms the same paths: And perf as well (slight arch differences, but still mem setup). 46.85% [kernel] [k] lruvec_lru_size 16.89% [kernel] [k] clear_user_page 5.74% [kernel] [k] inactive_list_is_low.isra.0 4.48% [kernel] [k] find_next_bit 3.74% [kernel] [k] cpumask_next 2.72% [kernel] [k] copypage_power7 2.40% [kernel] [k] kvm_age_rmapp 1.94% [kernel] [k] snapshot_refaults 1.28% [kernel] [k] shrink_page_list
Note: This is 5.2.0-10-generic Also cross arch, as soon as no hostdev is passed the init can be skipped. the 75 seconds above drop down to the ~7 seconds I have seen before the single thread init starts. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1838575 Title: passthrough devices cause >17min boot delay Status in linux package in Ubuntu: Confirmed Status in qemu package in Ubuntu: Incomplete Bug description: Adding passthrough devices to a guest introduces a boot delay of > 17 minutes. During this time libvirt reports the guest to be "paused". The delay does not seem to scale with the # of hostdevs - that is, 1 hostdev causes about a 17min delay, while 16 only bumps that up to ~18min. Removing all hostdevs avoids the delay. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1838575/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
