I added initcall debug and got some more data: The first delay:
# [ 2.846188] localhost.localdomain kernel: AES CTR mode by8 optimization enabled # [ 5.919313] localhost.localdomain kernel: raid6: avx2x4 gen() 21512 MB/s There are some silent initializations occuring between these two points, mainly crypto code such as ghash, crc32, ccrt10dif, raid0, raid, libcrc32c etc. A fairly long pause of ~600ms occurs during the hv_netvsc initialization, this is the Hyper-V network driver, so that's expected to have some time variation and is dependant on the host. The second delay: # [ 5.159028] localhost.localdomain kernel: EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) # [ 8.385284] localhost.localdomain systemd[1]: systemd 237 running in.. I can't seem to seem to reproduce the long delay, I'm seeing ~100-250ms delays between the invocation of the mount and the mount completion. I wonder if this is still a H/W issue where my VMs are different machines and performing faster. Anyhow, with the debug enabled I believe there is little going on between these two points apart from an ext4 mount. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1858495 Title: multiple long delays during kernel and userspace boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-azure/+bug/1858495/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
