I had slow boot with 16.10 few months ago. I moved back to 16.04. Today I had time to test some of the kernels above from the bisection process. These are the results
4.4.0-59-generic # Ubuntu 16.04 official January 2017 Startup finished in 4.889s (kernel) + 28.001s (userspace) = 32.890s 4.6.0-040600-generic # from comment 29 ... actually from #34 Startup finished in 5.274s (kernel) + 23.561s (userspace) = 28.836s 4.6.0-040600-generic # comment 36 Startup finished in 5.111s (kernel) + 25.192s (userspace) = 30.304s 4.6.0-040600rc1-generic # comment 54 Startup finished in 4.979s (kernel) + 21.904s (userspace) = 26.883s 4.8.0-26-generic # official Ubuntu 16.10 at November 2016 Startup finished in 15.025s (kernel) + 35.067s (userspace) = 50.093s 4.8.0-29-generic # comment 61 Startup finished in 14.808s (kernel) + 32.516s (userspace) = 47.325s Startup finished in 15.674s (kernel) + 26.293s (userspace) = 41.967s 4.8.0-34-generic # Official 16.04 repo, apt install linux-generic-hwe-16.04-edge Startup finished in 15.717s (kernel) + 26.583s (userspace) = 42.301s Basically the two patches on my (old) laptop reduce the total boot from 50 to 40 something. Obviously there is another issue. On 4.8 kernels (with or without the two patches) I get a short freeze of 1-2 secs when I open a window of System Settings. I'd suggest we should continue the bisection that Joseph Salisbury started. We should continue after the kernel in comment 54 which is GOOD. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1626436 Title: [4.8 regression] boot has become very slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626436/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
