[Bug 1752375] Re: Massive performance regression caused by recent spectre/meltdown patches
*** This bug is a duplicate of bug 1752761 *** https://bugs.launchpad.net/bugs/1752761 Yes, it seems to be working now. ** This bug has been marked a duplicate of bug 1752761 framebuf STOP BSOD and performance regression ubuntu10.21 to ubuntu10.22 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752375 Title: Massive performance regression caused by recent spectre/meltdown patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1752375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1752375] Re: Massive performance regression caused by recent spectre/meltdown patches
The suggested bug above was resolved, could you please test if this was the issue that affected you as well? ** Changed in: qemu (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/1752375 Title: Massive performance regression caused by recent spectre/meltdown patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1752375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1752375] Re: Massive performance regression caused by recent spectre/meltdown patches
Note: Probably related to bug 1752761 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752375 Title: Massive performance regression caused by recent spectre/meltdown patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1752375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1752375] Re: Massive performance regression caused by recent spectre/meltdown patches
Hi Phillip, there was no recent change to Xen and the ones in qemu in regard to spectre/meltdown are all opt-in. You have to change the guest cpu to pick the things up - well that is it in kvm, but you mentioned xen - I'm not sure at all how it works there. Could you outline exactly: 1. which are the two versions of qemu-system-x86 that are good and bad (there were a lot of security fixes recently)? 2. the command line you use to invoke the live cd under xen? 3. if you could check, does on your system the same apply if you run it under KVM ? @Marc - any idea which change could be involved? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752375 Title: Massive performance regression caused by recent spectre/meltdown patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1752375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1752375] Re: Massive performance regression caused by recent spectre/meltdown patches
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: qemu (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752375 Title: Massive performance regression caused by recent spectre/meltdown patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1752375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
