[Bug 1886022] Re: multiple processes intermittently stall at same point in strace
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886022 Title: multiple processes intermittently stall at same point in strace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1886022] Re: multiple processes intermittently stall at same point in strace
That didn't fix it. So, next I uninstalled nscd. At this point, nothing else in apt's purview explicitly depended on it - though it was still showing up in straces. After that, the behavior has been significantly better so far. So... maybe a bug in nscd? On that note, just curious: why is nscd showing up in an strace when the root user - having logged in at the console at ctrl-alt-F2, with no GUI - is trying to open a file using vim in its home directory? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886022 Title: multiple processes intermittently stall at same point in strace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1886022] Re: multiple processes intermittently stall at same point in strace
I decided to try removing ltsp, ltsp-binaries and dsnmasq, just to see what would happen after. During the attempt, I got a timeout during update-initramfs. Timeouts like this during apt are common. I ran "update-initramfs -u" after the timeout, and that time it seemed to proceed normally. I'll go reboot the machine when I can and report back. Aside: This machine also serves a website, and that remains fast even when the rest of the machine is slow. After ssh to another internal machine, all is fast again. So it's not a plain network thing. The timeout: root@frost:~# apt remove dnsmasq ltsp ltsp-binaries Reading package lists... Done Building dependency tree Reading state information... Done The following package was automatically installed and is no longer required: sshfs Use 'apt autoremove' to remove it. The following packages will be REMOVED: dnsmasq ltsp ltsp-binaries 0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded. After this operation, 1,669 kB disk space will be freed. Do you want to continue? [Y/n] (Reading database ... 296064 files and directories currently installed.) Removing dnsmasq (2.80-1.1ubuntu1) ... Removing ltsp (20.06-1~ubuntu20.04.1) ... Removing ltsp-binaries (20.04-1~ubuntu20.04.1) ... Processing triggers for man-db (2.9.1-1) ... Processing triggers for initramfs-tools (0.136ubuntu6.2) ... update-initramfs: Generating /boot/initrd.img-5.4.0-40-generic Error: Timeout was reached -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886022 Title: multiple processes intermittently stall at same point in strace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1886022] Re: multiple processes intermittently stall at same point in strace
Yes. And still intermittent. More data that might or might not be useful: I got frustrated trying to get the grub menu to appear and uninstalled plymouth. So, I can tell you that this happens at tty[1-4] as well as after 'startx'. (LXDE is installed) I think it is less likely to happen without plymouth installed. It's hard to get good data, though, bc intermittent. Remote logins (ssh) still happen mostly slowly but occasionally quickly. Another issue that might be related. I had to stop/disable networking.service partway through attempting to apt update (after the -39 test and now back at -40) because the machine stopped knowing where to find a DNS server, ignoring my entries (and lack of entries) in netplan and attempts at 'netplan apply'. I had disabled network-manager long ago. After stopping networking.service, 'netplan apply' was obeyed and I had DNS again. Even after disabling networking and network-manager, two unconfigured interfaces still come up at boot (via DHCP). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886022 Title: multiple processes intermittently stall at same point in strace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1886022] Re: multiple processes intermittently stall at same point in strace
Does -39 have this issue? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886022 Title: multiple processes intermittently stall at same point in strace To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886022/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
