------- Comment From indira.pr...@in.ibm.com 2018-04-23 09:46 EDT------- Latest update on boslcp3
boslcp3g1, boslcp3g4 guests are up & running for 32 hours without any hang/crash. boslcp3g3 guest run went fine for 24 hours but after that seen "nfs: server 10.33.11.31 not responding, timed out" messages.show.report.py & other commands not responding. So restarted guest from then guest became so slow ,started dumping rcu stall messages as below root@boslcp3:~# virsh console --force boslcp3g3 Connected to domain boslcp3g3 Escape character is ^] [ 2648.583544] INFO: rcu_sched detected stalls on CPUs/tasks: [ 2648.704426] 9-....: (1 GPs behind) idle=ca8/0/0 softirq=18376/18379 fqs=2805 [ 2648.738639] (detected by 4, t=10132 jiffies, g=25268, c=25267, q=2218) [ 2649.063533] rcu_sched kthread starved for 2036 jiffies! g25268 c25267 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=4 Host is doing fine as of now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1762844 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: Host crashed & enters into xmon after moving to 4.15.0-15.16 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1762844/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
