I could not run it, as
test@test-ThinkCentre-M92P:~$ apport-collect 1587265
ERROR: connecting to Launchpad failed: [Errno 110] Connection timed out
You can reset the credentials by removing the file
"/home/test/.cache/apport/launchpad.credentials"
and also I am not sure if that report could collect sensitive info from
my system or not, so I could not upload such log now.
I think the description is clear, so mark it confirmed now,
Let me know if have other ways to collect logs. Thanks
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
--
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/1587265
Title:
ubuntu not work with tickless kernel boot option
Status in linux package in Ubuntu:
Confirmed
Bug description:
For redhat, we have such guide like
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/pdf/Performance_Tuning_Guide/Red_Hat_Enterprise_Linux-7-Performance_Tuning_Guide-en-US.pdf
and for tickless kernel, (use dynamic tickless ways)
1. config grub with following cmdline
$ cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'
GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash isolcpus=1-2 nohz_full=1-2"
GRUB_CMDLINE_LINUX=""
I used nohz_full here, and it is CPU 1, 2 here.
2. update-grub after that.
3. Then reboot system
4. execute following
$ sudo perf stat -C 1 -e irq_vectors:local_timer_entry taskset -c 1 stress
-t 1 -c 1
stress: info: [3869] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
stress: info: [3869] successful run completed in 1s
Performance counter stats for 'CPU(s) 1':
252 irq_vectors:local_timer_entry
1.001491203 seconds time elapsed
It always 252, (the default 250 HZ), seems tickless kernel option not have
any effect, whether config it or not, both have same results.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+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
