** Description changed: - With the addition of more CPU state information of data, the PEBS(Processor Event Based Sampling) record size is greatly increased. However, most general users of PEBS require just the eventingIP and do not require such a large PEBS record. - Adaptive PEBS provides Software the capability to configure the PEBS records to capture only the data of interest, keeping the record size compact. - Need modify KVM and Qemu. + With the addition of more CPU state information of data, the PEBS(Processor Event Based Sampling) record size is greatly increased. However, most general users of PEBS require just the eventingIP and do not require such a large PEBS record. + Adaptive PEBS provides Software the capability to configure the PEBS records to capture only the data of interest, keeping the record size compact. + Need modify KVM and Qemu. Adaptive PEBS (Processor Event Based Sampling) is configurable PEBS records for only interested data collection from massive PEBS data. It depends on PEBS via PT. The enabling work includes: ◾Expose this feature and MSR configure bit in guest PEBS driver ◾Save and restore status in vCPU when vm_exit and vm_entry ◾Support both host-guest mode and system mode. + + Target Kernel: 4.20 + Target Release: 19.04
** Tags removed: intel ** Tags added: intel-virt-19.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1782208 Title: KVM SnowRidge Adaptive PEBS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xen/+bug/1782208/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
