@burby 晚上 10 点 55 分又测了一下，github 拉代码的速度只有 3MiB/s 左右，speedtest.net 测速也只有 41.15Mbps ，播放 youtube 上的 4k 视频也会卡，确实是有些慢了。

@stillsilly 角度刁钻

@burby 深圳电信，拉 github 代码完全没问题，但是速度不如 Amytelecom ，刚刚测了一下可以稳定在 8MiB/s 左右。

Just My Socks 的 5.88 刀每月 500GB 的 LA 套餐，速度不是最快的，但确实是最稳的，用了有 4 年了

另外也在用 Amytelecom 的 55 每月 300GB 的套餐，用了 2 年了，hk 节点的延迟是我用过的所有机场中最低的，速度也是最快的，下载速度常常能跑满我的千兆宽带。

最近还开始用蜂鸟云，这个的优势是流量非常便宜，60 元 1000GB 的流量，用来看 youtube ，netflix 的 4k 视频很不错。

@faustina2018 #87

> 孩子做掉

你知道你在说什么吗？这哥们儿的老婆还有 10 天左右就要生产了，你没看到吗？

@huangya 物理机用的是 fedora server 42 ，用 libvirt 管理虚拟机

google 官网没有看到这个大会的新闻，能给个链接看看吗？

看你需求，对于我来说目前市面上没有任何一款 cpu 能满足我的使用需求，因为我的主力机需要能支持三张显卡，而且必须都要能直通给虚拟机。

目前我用的是 12700 cpu + b660 重炮手主板 + 4 x 32g ddr4 3200 内存 + 5070 显卡 + 6650xt 显卡，我的使用方式是物理机装 linux ，不装桌面环境，cpu 自带的 uhd770 核显直通给装了桌面环境的 linux 虚拟机，用来做主力系统用，5070 显卡直通给 win11 虚拟机打游戏，6650xt 显卡有时直通给 win11 虚拟机，有时直通给 linux ，用来做各种杂七杂八的测试用。

我的需求只能用 intel 的 cpu ，因为 intel 在虚拟化直通这方面比 amd 要稳定很多，用 12700 cpu 的原因是 uhd770 核显能直通给虚拟机，如果用 amd 的或者 intel ultra 200s 的 cpu 就要配 3 张独显了，可惜现在 intel 的 cpu 最多都只有 8 个大核，我的三台虚拟机都是只能用大核才能保证性能，所以即便我用 14900 也不会比 12700 强多少，8 个大核对我来说是真的不够用，比如我想在直通了 5070 显卡的虚拟机上玩荒野大鏢客 2 的同时使用直通了 uhd770 显卡的主力 linux 桌面系统，两台虚拟机就会互相抢 cpu ，更别说同时用直通了 6650xt 显卡的虚拟机了。

bash shell

@sunfkny 谢谢，完美解决

@billlee 我是想把 qemu 的命令行保存到文件里

@julyclyde #3 是的，最简单的方式就是每个选项和参数都用单引号包起来，但是这样不美观，我是想把命令行存到日志文件里，就像 libvirt 那样，libvirt 就把日志里的 qemu 命令行格式化成了我想要的效果：

/usr/bin/qemu-system-x86_64 \
-name guest=win11-23h2,debug-threads=on \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-9-win11-23h2/master-key.aes"}' \
-blockdev '{"driver":"file","filename":"/usr/share/edk2/ovmf/OVMF_CODE_4M.qcow2","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"qcow2","file":"libvirt-pflash0-storage","backing":null}' \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/win11-23h2_VARS.qcow2","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"qcow2","file":"libvirt-pflash1-storage","backing":null}' \
-machine pc-q35-8.2,usb=off,vmport=off,smm=on,dump-guest-core=off,memory-backend=pc.ram,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format,hpet=off,acpi=on \
-accel kvm \
-cpu host,migratable=on,host-phys-bits=on,host-phys-bits-limit=39 \
-m size=16777216k \
-object '{"qom-type":"memory-backend-memfd","id":"pc.ram","hugetlb":true,"hugetlbsize":1073741824,"share":true,"x-use-canonical-path-for-ramblock-id":false,"prealloc":true,"size":17179869184}' \
-overcommit mem-lock=off \
-smp 8,sockets=1,dies=1,clusters=1,cores=8,threads=1 \
-uuid a7849adb-a74b-4086-a0a6-738c5e689a8a \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=23,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=delay \
-no-shutdown \
-global ICH9-LPC.disable_s3=1 \
-global ICH9-LPC.disable_s4=1 \
-boot menu=on,strict=on \
-device '{"driver":"pcie-root-port","port":16,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x2"}' \
-device '{"driver":"pcie-root-port","port":17,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x2.0x1"}' \
-device '{"driver":"pcie-root-port","port":18,"chassis":3,"id":"pci.3","bus":"pcie.0","addr":"0x2.0x2"}' \
-device '{"driver":"pcie-root-port","port":19,"chassis":4,"id":"pci.4","bus":"pcie.0","addr":"0x2.0x3"}' \
-device '{"driver":"pcie-root-port","port":20,"chassis":5,"id":"pci.5","bus":"pcie.0","addr":"0x2.0x4"}' \
-device '{"driver":"pcie-root-port","port":21,"chassis":6,"id":"pci.6","bus":"pcie.0","addr":"0x2.0x5"}' \
-device '{"driver":"pcie-root-port","port":22,"chassis":7,"id":"pci.7","bus":"pcie.0","addr":"0x2.0x6"}' \
-device '{"driver":"pcie-root-port","port":23,"chassis":8,"id":"pci.8","bus":"pcie.0","addr":"0x2.0x7"}' \
-device '{"driver":"pcie-root-port","port":24,"chassis":9,"id":"pci.9","bus":"pcie.0","multifunction":true,"addr":"0x3"}' \
-device '{"driver":"pcie-root-port","port":25,"chassis":10,"id":"pci.10","bus":"pcie.0","addr":"0x3.0x1"}' \
-device '{"driver":"pcie-root-port","port":26,"chassis":11,"id":"pci.11","bus":"pcie.0","addr":"0x3.0x2"}' \
-device '{"driver":"pcie-root-port","port":27,"chassis":12,"id":"pci.12","bus":"pcie.0","addr":"0x3.0x3"}' \
-device '{"driver":"pcie-root-port","port":28,"chassis":13,"id":"pci.13","bus":"pcie.0","addr":"0x3.0x4"}' \
-device '{"driver":"pcie-root-port","port":29,"chassis":14,"id":"pci.14","bus":"pcie.0","addr":"0x3.0x5"}' \
-device '{"driver":"pcie-root-port","port":8,"chassis":15,"id":"pci.15","bus":"pcie.0","addr":"0x1"}' \
-device '{"driver":"pcie-pci-bridge","id":"pci.16","bus":"pci.12","addr":"0x0"}' \
-device '{"driver":"qemu-xhci","p2":15,"p3":15,"id":"usb","bus":"pci.2","addr":"0x0"}' \
-device '{"driver":"virtio-scsi-pci","id":"scsi0","bus":"pci.7","addr":"0x0"}' \
-device '{"driver":"virtio-serial-pci","id":"virtio-serial0","bus":"pci.3","addr":"0x0"}' \
-blockdev '{"driver":"host_device","filename":"/dev/thin/win11_23h2","aio":"native","node-name":"libvirt-1-storage","read-only":false,"discard":"unmap","cache":{"direct":true,"no-flush":false}}' \
-device '{"driver":"virtio-blk-pci","bus":"pci.4","addr":"0x0","drive":"libvirt-1-storage","id":"virtio-disk0","bootindex":1,"write-cache":"on"}' \
-netdev '{"type":"tap","fd":"24","vhost":true,"vhostfd":"32","id":"hostnet0"}' \
-device '{"driver":"virtio-net-pci","netdev":"hostnet0","id":"net0","mac":"52:54:00:1a:14:2d","bus":"pci.1","addr":"0x0"}' \
-netdev '{"type":"tap","fd":"33","vhost":true,"vhostfd":"34","id":"hostnet1"}' \
-device '{"driver":"virtio-net-pci","netdev":"hostnet1","id":"net1","mac":"52:54:00:e1:84:76","bus":"pci.11","addr":"0x0"}' \
-chardev spicevmc,id=charchannel0,name=vdagent \
-device '{"driver":"virtserialport","bus":"virtio-serial0.0","nr":2,"chardev":"charchannel0","id":"channel0","name":"com.redhat.spice.0"}' \
-chardev socket,id=charchannel1,fd=22,server=on,wait=off \
-device '{"driver":"virtserialport","bus":"virtio-serial0.0","nr":1,"chardev":"charchannel1","id":"channel1","name":"org.qemu.guest_agent.0"}' \
-audiodev '{"id":"audio1","driver":"spice"}' \
-spice port=5900,addr=0.0.0.0,disable-ticketing=on,image-compression=off,seamless-migration=on \
-global ICH9-LPC.noreboot=off \
-watchdog-action reset \
-chardev spicevmc,id=charredir0,name=usbredir \
-device '{"driver":"usb-redir","chardev":"charredir0","id":"redir0","bus":"usb.0","port":"2"}' \
-chardev spicevmc,id=charredir1,name=usbredir \
-device '{"driver":"usb-redir","chardev":"charredir1","id":"redir1","bus":"usb.0","port":"3"}' \
-chardev spicevmc,id=charredir2,name=usbredir \
-device '{"driver":"usb-redir","chardev":"charredir2","id":"redir2","bus":"usb.0","port":"4"}' \
-chardev spicevmc,id=charredir3,name=usbredir \
-device '{"driver":"usb-redir","chardev":"charredir3","id":"redir3","bus":"usb.0","port":"5"}' \
-device '{"driver":"vfio-pci","host":"0000:08:00.0","id":"hostdev0","bus":"pci.5","addr":"0x0","romfile":"/home/d/.local/share/libvirt/rom/Navi_23.rom"}' \
-device '{"driver":"vfio-pci","host":"0000:08:00.1","id":"hostdev1","bus":"pci.8","addr":"0x0"}' \
-object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' \
-device '{"driver":"virtio-rng-pci","rng":"objrng0","id":"rng0","bus":"pci.6","addr":"0x0"}' \
-device '{"driver":"usb-host","hostbus":1,"hostport":"7","bus":"usb.0"}' \
-device '{"driver":"usb-host","hostbus":1,"hostport":"11","bus":"usb.0"}' \
-device '{"driver":"usb-host","hostbus":1,"hostport":"10.4","bus":"usb.0"}' \
-device '{"driver":"usb-host","hostbus":1,"hostport":"10.2","bus":"usb.0"}' \
-sandbox off \
-msg timestamp=on

只把需要用单引号包起来的参数用单引包起来。

@julyclyde 能具体一点吗？我想当伸手党。。。。

我自己简单研究了一下，你说的这种方法和 pgrep 没有什么区别：

d@develop:~$ cat /proc/19754/cmdline | xargs -0 echo | perl -0pe 's/ -/ \\\n-/g'
qemu-system-x86_64 \
-machine q35,accel=kvm \
-cpu host \
-m 1G \
-kernel /home/d/kernel/kernel \
-initrd /home/d/rd/initramfs.cpio.gz \
-append console=ttyS0 test="11 22" \
-netdev {"type":"tap","vhost":true,"ifname":"eth_0","id":"hostnet0","script":"","downscript":""} \
-device {"driver":"virtio-net-pci","netdev":"hostnet0","id":"net0","mac":"52:54:00:c0:45:c7"} \
-nographic

别参与就行了，我连注册都觉得麻烦，割也割不到我

能保证别再犯同样的错就行了

@DefoliationM 是内网，正常使用是很稳的，但有时服务器会短暂断网维护一下，我就是觉得默认的 5 秒超时时间太短了，想稍微增加一下，比如增加到 20 秒这样。

楼主的遇到的状况让我想起了黑暗荣耀这部剧。。。。

潮玩客的黄健近期一直说机械硬盘还会狂涨，他是有开淘宝店的，我觉得狂涨不一定，但是降价是不太可能了

@cxe2v 谢谢，我想清楚了不用 7 类线了