kvm performance optimization technologies, part one In full virtualization the guest OS doesn’t aware of it is running in an VM. If the OS... 2020-10-09 02:27:58 | 阅读: 234 | 收藏 | terenceli.github.io pv vcpu ipi eoi apic

Linux kernel perf architecture Component overview Linux perf subsystem is very useful in performance profiling. Fo... 2020-10-09 02:27:58 | 阅读: 219 | 收藏 | terenceli.github.io pmu swevent hlist tracepoint sw

vDPA kernel framework introduction Virtual data path acceleration(vDPA) is a new technogy to acclerate the performance (l... 2020-10-09 02:27:58 | 阅读: 181 | 收藏 | terenceli.github.io vdpa virtio vhost hardware userspace

How eBPF program connects with tracepoint 2020-08-09 In the last post Linux tracing - trace event fram... 2020-10-09 02:27:58 | 阅读: 247 | 收藏 | terenceli.github.io prog tracepoint rctx hlist ebpf

Linux tracing - trace event framework Sample This post will show the trace event framework. The most important is the ‘TR... 2020-10-09 02:27:58 | 阅读: 183 | 收藏 | terenceli.github.io undef bitmask tracepoint silly tstruct

Linux tracing - kprobe, uprobe and tracepoint Background Linux tracing system is confused as there are many faces of tracing. The... 2020-10-09 02:27:58 | 阅读: 229 | 收藏 | terenceli.github.io tracepoint uprobe kprobe funcs int3

Linux vsock internals Background VM Sockets(vsock) is a fast and efficient communication mechanism betwee... 2020-10-09 02:27:58 | 阅读: 267 | 收藏 | terenceli.github.io vsock pkt virtio vhost vq

Write eBPF program in pure C 2020-01-18 While developing new eBPF program type, we need d... 2020-10-09 02:27:58 | 阅读: 239 | 收藏 | terenceli.github.io ebpf pattr insn errno prog

cgroups internals Concepts Control groups provide a mechanism to group process/tasks to control there... 2020-10-09 02:27:58 | 阅读: 177 | 收藏 | terenceli.github.io subsys cgrp cset dfl cftypes

pid namespace internals 2019-12-20 Namespace is another method to abstract resouces.... 2020-10-09 02:27:58 | 阅读: 179 | 收藏 | terenceli.github.io upid pidmap cachep pcache pidtype

user namespace internals Namespace is another method to abstract resouces. A namespace make it appear to the pr... 2020-10-09 02:27:58 | 阅读: 197 | 收藏 | terenceli.github.io kuid extent nsproxy extents userns

A brief overview of cloud-hypervisor, a modern VMM 2019-09-07 Background Several months ago, intel made the... 2020-10-09 02:27:58 | 阅读: 209 | 收藏 | terenceli.github.io cloud vmm hypervisor crosvm firecracker

qemu VM device passthrough using VFIO, the code analysis QEMU uses VFIO to assign physical devices to VMs. When using vfio, the qemu command li... 2020-10-09 02:27:58 | 阅读: 333 | 收藏 | terenceli.github.io vfio vdev intx interrupt notifier

VFIO driver analysis The VFIO driver is a framework for exposing direct device access to userspace. Virtua... 2020-10-09 02:27:58 | 阅读: 246 | 收藏 | terenceli.github.io vfio iommu type1 dma mutex

VFIO usage 2019-08-16 VFIO is used to assign a physical IO device to th... 2020-10-09 02:27:58 | 阅读: 193 | 收藏 | terenceli.github.io vfio lrwxrwxrwx pci0000 vmxnet3 iommu

intel IOMMU driver analysis In the last post IOMMU introduction we have got the basic idea of what is IOMMU and wh... 2020-10-09 02:27:58 | 阅读: 302 | 收藏 | terenceli.github.io iommu dmar dma drhd iova

IOMMU introduction 2019-08-04 MMU is used by CPU to translate a virtual address... 2020-10-09 02:27:58 | 阅读: 228 | 收藏 | terenceli.github.io iommu dma iova assignment remapping

Linux static_key internlas static_key introduction There are often a situation that we need to check some swit... 2020-10-09 02:27:58 | 阅读: 218 | 收藏 | terenceli.github.io apic sw poker deferred iterk

KVM async page fault apf introduction The qemu/kvm VM’s physical memory is the virtual memory of qemu pr... 2020-10-09 02:27:58 | 阅读: 196 | 收藏 | terenceli.github.io pf vcpu apf gfn pv

system call analysis: mount 2019-02-23 The data in disk is just raw bytes, the user need... 2020-10-09 02:27:58 | 阅读: 170 | 收藏 | terenceli.github.io newmnt dentry vfsmount fstype vfs