Re: [qubes-users] Re: Xen high CPU usage, but nothing is running in the VM
On 06/18/2017 10:01 AM, qubenix wrote: 'Vincent Adultman' via qubes-users: This happens to me sometimes on the current Xen/Linux versions. When I look at top in the offending VM its "kswapd" that has gone berserk. -- Chris Laprise, tas...@openmailbox.org https://twitter.com/ttaskett PGP: BEE2 20C5 356E 764A 73EB 4AB3 1DC4 D106 F07F 1886 -- I can confirm I've also experienced this with kswapd in either sys-net or sys-firewall, can't remember which. Only way around it I found was to reboot the VM. I have also experience with kswapd going crazy in a Debian vm with intense I/O and CPU. Kswapd persisted to rock the cpu even after all the software was done, for about 10 minutes, until I shutdown the vm. Seems to be a rare condition though because I experience it only 1/50 times with this vm. I recently switched to kernel 4.9 and I can't remember it happening since then. So maybe the problem was with the 4.8 kernel I was using... -- Chris Laprise, tas...@openmailbox.org https://twitter.com/ttaskett PGP: BEE2 20C5 356E 764A 73EB 4AB3 1DC4 D106 F07F 1886 -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/f4526136-73de-a6ec-a7bd-2e584335799a%40openmailbox.org. For more options, visit https://groups.google.com/d/optout.
Re: [qubes-users] Re: Xen high CPU usage, but nothing is running in the VM
'Vincent Adultman' via qubes-users: > This happens to me sometimes on the current Xen/Linux versions. When I > look at top in the offending VM its "kswapd" that has gone berserk. > > -- > > Chris Laprise, tas...@openmailbox.org > https://twitter.com/ttaskett > PGP: BEE2 20C5 356E 764A 73EB 4AB3 1DC4 D106 F07F 1886 > > -- > I can confirm I've also experienced this with kswapd in either sys-net or > sys-firewall, can't remember which. Only way around it I found was to reboot > the VM. > I have also experience with kswapd going crazy in a Debian vm with intense I/O and CPU. Kswapd persisted to rock the cpu even after all the software was done, for about 10 minutes, until I shutdown the vm. Seems to be a rare condition though because I experience it only 1/50 times with this vm. -- qubenix GPG: B536812904D455B491DCDCDD04BE1E61A3C2E500 -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/76474d76-e39b-9ea0-83e6-77a81cc2538e%40riseup.net. For more options, visit https://groups.google.com/d/optout.
Re: [qubes-users] Re: Xen high CPU usage, but nothing is running in the VM
This happens to me sometimes on the current Xen/Linux versions. When I look at top in the offending VM its "kswapd" that has gone berserk. -- Chris Laprise, tas...@openmailbox.org https://twitter.com/ttaskett PGP: BEE2 20C5 356E 764A 73EB 4AB3 1DC4 D106 F07F 1886 -- I can confirm I've also experienced this with kswapd in either sys-net or sys-firewall, can't remember which. Only way around it I found was to reboot the VM. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/iN97IVQYSzHL2rj-89YTu_69EELdKrifa-PH33Mz3dMgvfxsk6BXhyBqLXVDUPHLzdhbgTJZCJXuVmU91J7wVRVeIAfkg2wg2FrjSFIzq2Y%3D%40protonmail.com. For more options, visit https://groups.google.com/d/optout.
Re: [qubes-users] Re: Xen high CPU usage, but nothing is running in the VM
Interesting, I'd expect kswapd to be capable of performing I/O berserk, nou CPU berserk. The only CPU-intensive part should be dm-crypt, but it runs in dom0, not in standard AppVMs (unless you adjust it accordingly). Regards, Vít Šesták 'v6ak' -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/24c949e5-6ddc-4dc5-a707-e35dadd6df90%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [qubes-users] Re: Xen high CPU usage, but nothing is running in the VM
On 06/17/2017 06:40 AM, loke...@gmail.com wrote: I've restarted the offending VM's now, so I can't test anymore. The fan was blowing at maximum speed (which is why I looked into this in the first place) so there was definitely something happening. The VM that was running with the most CPU usage according to xentop (150% or so) had been used to run an Atari ST emulator (which uses lots of CPU). However, the emulator had been killed and the machine left idle while I was off doing other things for at least 30 minutes. It was when I came back to the computer that I noticed that the fan was blowing and that's when I noticed the problem. This happens to me sometimes on the current Xen/Linux versions. When I look at top in the offending VM its 'kswapd' that has gone berserk. -- Chris Laprise, tas...@openmailbox.org https://twitter.com/ttaskett PGP: BEE2 20C5 356E 764A 73EB 4AB3 1DC4 D106 F07F 1886 -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/020ac419-ce1e-49cd-52d6-6d95118a64ac%40openmailbox.org. For more options, visit https://groups.google.com/d/optout.
