I was checking dmesg of good/bad cases, but there was no major difference. The time init looks pretty much the same - one outlier is the processor frequency on time init which differs slightly:
Failing guests (diamond) [ 0.000000] time_init: decrementer frequency = 512.000000 MHz [ 0.000000] time_init: processor frequency = 3458.000000 MHz [ 0.000001] clocksource: timebase: mask: 0xffffffffffffffff max_cycles 0x761537d007, max_idle_ns: 440795202126 ns [ 0.000003] clocksource: timebase mult[1f40000] shift[24] registered [...] [ 0.023316] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [...] [ 0.054877] clocksource: Switched to clocksource timebase Working guests (wichita): TODO [ 0.000000] time_init: decrementer frequency = 512.000000 MHz [ 0.000000] time_init: processor frequency = 3425.000000 MHz [ 0.000002] clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x761537d007, max_idle_ns: 440795202126 ns [ 0.000004] clocksource: timebase mult[1f40000] shift[24] registered [...] [ 0.024374] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [...] [ 0.061523] clocksource: Switched to clocksource timebase As soon as systemd starts things get a bit noisier, but no major difference can be seen -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1668241 Title: Guests trash time on start, crashing the guest To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1668241/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
