```
❯ ssh sus@xx.xx.xx.xx
Last login: Sat Nov 14 17:32:08 2020 from 10.104.45.138
17:36:19 up 0 min, 0 users, load average: 0.00, 0.00, 0.00
> systemd-analyze blame
Bootup is not yet finished (org.freedesktop.systemd1.Manager.FinishTimestampMonotonic=0).
Please try again later.
Hint: Use 'systemctl list-jobs' to see active jobs
> systemd-analyze blame
43.954s systemd-time-wait-sync.service
1.969s systemd-networkd-wait-online.service
1.559s cloud-init-local.service
1.039s cloud-init.service
414ms cloud-final.service
387ms dracut-initqueue.service
382ms initrd-switch-root.service
380ms cloud-config.service
198ms systemd-journal-flush.service
136ms systemd-udev-trigger.service
115ms initrd-parse-etc.service
97ms systemd-timesyncd.service
84ms systemd-journald.service
```
After made it configurable and set to 5s
```
❯ ssh sus@xx.xx.xx.xx
Last login: Sat Nov 14 18:41:42 2020 from 10.104.45.138
18:42:36 up 0 min, 0 users, load average: 0.16, 0.03, 0.01
> systemd-analyze blame
10.450s systemd-time-wait-sync.service
8.303s systemd-networkd-wait-online.service
1.621s cloud-init-local.service
1.068s cloud-init.service
```
The new retry intervals are [15, 20, 26, 34, 45, 60, 80, 106, 141, 188, 250,
333, 360, ...]. This should allow graceful response if a transient network
failure is encountered. Growth is exponential, but with a small power and
capped to a non-too-large value so that we resynchronize within a few minutes
after network is restored. I made the minimum 15 s to make sure that we never
send packets more often than that.
Fixes#16492.
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
This reverts commit 665c6a9eab.
On Tue, Sep 2, 2014 at 3:17 PM, Miroslav Lichvar <mlichvar@redhat.com> wrote:
>
> With the other patch allowing missed replies included it's now getting
> stuck as there is no timer to send the 2nd and 3rd request.
After receiving a reply from the server, allow two missed replies before
switching to another server to avoid unnecessary clock hopping when
packets are getting lost in the network.
When all servers are exhausted, wait for one poll interval before trying
to connect again to the first server in the list. Also, keep increasing
the polling interval to make sure a client not getting any valid replies
will not send requests to any server more frequently than is allowed by
the maximum polling interval.
