https://dengxihe.com/techwiki/ 2026-05-06T18:42:53-07:00 https://dengxihe.com/techwiki/ https://dengxihe.com/techwiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2017-03-11T10:19:08-07:00 https://dengxihe.com/techwiki/cloud/kvm/perf_tuning?rev=1489256348&do=diff Reference * kvm性能优化方案---cpu/内存/磁盘/网络 <http://blog.csdn.net/beginning1126/article/details/41983547> * 美团技术团队- KVM性能优化 - SlideShare <https://www.slideshare.net/meituan/kvmopt-osforce-27669119> * KVM性能优化--CPU篇 <http://bbs.qy.com.cn/thread-1111-1-1.html> * Kvm performance optimization for ubuntu <https://www.slideshare.net/janghoonsim/kvm-performance-optimization-for-ubuntu> * <https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/pdf/Virtualization_Tuning_and_Optimizat… text/html 2017-09-26T13:03:17-07:00 https://dengxihe.com/techwiki/cloud/kvm/qemu?rev=1506456197&do=diff /usr/bin/qemu-system-x86_64 \ -no-user-config \ -nodefaults \ -no-shutdown \ -machine accel=kvm,mem-merge=off \ -rtc base=utc \ -m 4096 \ -cpu host \ -smp cpus=16,cores=8,threads=2,sockets=1 \ -display vnc=:0 \ -vga std \ -chardev ringbuf,id=ringBufSerial0,size=8388608 \ -device isa-serial,chardev=ringBufSerial0 \ -chardev socket,id=monitor0,server,path=write-qemu/monitor-debug.sock,nowait \ -mon monitor0,mode=control \ -chardev socket,… text/html 2017-09-14T18:02:56-07:00 https://dengxihe.com/techwiki/cloud/kvm/vfio?rev=1505437376&do=diff check if intel vt-d is enabled dmesg|grep "Virtualization Technology for Directed I/O" see <http://vfio.blogspot.com/2016/09/intel-iommu-enabled-it-doesnt-mean-what.html>