On Tuesday, August 7, 2018 at 11:15:55 PM UTC-4, Outback Dingo wrote: > any suggestions, nothing is swapping, memory seems ok, ive even > allocated 8192 mb to 2 vms which i see it in, both fedora and debian, > and i am up to date update wise.
I wonder if this is a skylake microcode problem or an nvidia problem. First off, ensure you have the most recent firmware (BIOS, etc.) on your motherboard. This can help if it is a microcode issue. Also, have you updated both your dom0 and all of your templates and standalone VMs? I would think that all recent security-related microcode updates, even if your vendor hasn't provided it, have been migrated to the qubes 4.0 dom0 repository, but if there are any lingering in security-testing still, you might want to try from dom0: sudo qubes-dom0-update --enablerepo=qubes-dom0-security-testing On a lark, as it's been discussed before, can you try disabling hyper-threading in your BIOS setting and see if that makes a difference? Note that this points to older skylake steppings/microcode stability issues, not performance issues, so probably not your problem: https://lists.debian.org/debian-devel/2017/06/msg00308.html And the MS/.NET folks came across something performance-related that is a fun/frustrating read. The short version is that the Intel CPU Pause instruction was upgraded to wait ~140 cycles instead of ~10 cycles which was the norm pre-Skylake, and this was done primarily for optimizing hyper-threading and cache hits. No solution other than making sure compiler and (threading) library developers are aware of the change and engineer their code accordingly: https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/ Brendan -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-devel+unsubscr...@googlegroups.com. To post to this group, send email to qubes-devel@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/fcc81638-c51d-42e7-881a-25bd239b93a6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
