Date: Mon, 26 Oct 2020 17:25:49 +0100 From: rainer@ultra-secure.de To: freebsd-virtualization@freebsd.org Subject: Why is it that when I run FreeBSD in a local KVM, it behaves normal, but when it run it in our OpenStack cloud, IO is painfully slow? Message-ID: <0466f1268c7059af6a5e9950e47db6a0@ultra-secure.de>
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Hi, I uploaded the qcow2 image of 12.2RC3 and a recent 13-snapshot to our Openstack Cloud. I use dc3dd wipe to test IO because it eliminates the filesystem. I don't really have a particular fast SSD in my office PC, but I get around 100MB/s from writing zeros to the harddisk in CentOS. I also get about 100MB/s on FreeBSD on my local PC. The FreeBSD 13 VM on OpenStack is running like this: 1321858 ? Sl 174:16 | \_ /usr/bin/qemu-system-x86_64 -name guest=instance-0000a1a0,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-499-instance-0000a1a0/master-key.aes -machine pc-i440fx-bionic,accel=kvm,usb=off,dump-guest-core=off -cpu Skylake-Server-IBRS,ss=on,vmx=on,hypervisor=on,tsc_adjust=on,clflushopt=on,pku=on,md-clear=on,ssbd=on,xsaves=on,ibpb=on,amd-ssbd=on -m 4096 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 621d88e9-e803-4c26-9056-285a3320eeb2 -smbios type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=18.2.4,serial=d48ad200-7d1a-11e9-8000-ac1f6bd59bbe,uuid=621d88e9-e803-4c26-9056-285a3320eeb2,family=Virtual Machine -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-499-instance-0000a1a0/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -object secret,id=virtio-disk0-secret0,data=vwxTtkLohnqwK2r2/UtsDsSy+rhsrHVkltURhbJ4Bpw=,keyid=masterKey0,iv=xRU+WRSUhJLLfXwevFHcOQ==,format=base64 -drive file=rbd:ewos1-prod_nova/621d88e9-e803-4c26-9056-285a3320eeb2_disk:id=nova:auth_supported=cephx\;none:mon_host=10.38.65.71\:6789\;10.38.66.71\:6789\;10.38.67.71\:6789\;10.38.66.74\:6789,file.password-secret=virtio-disk0-secret0,format=raw,if=none,id=drive-virtio-disk0,cache=writeback,discard=unmap,throttling.bps-total=104857600,throttling.iops-total=800 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -object secret,id=virtio-disk1-secret0,data=2EEZom/oYVK9UXPdJvm8s3/nlpqPjbE9TOpwC/G8NjI=,keyid=masterKey0,iv=ltTLZnuc24yoLp0dSCN8zg==,format=base64 -drive file=rbd:ewos1-prod_cinder/volume-1c88c69a-6b88-4887-b11c-571cc6b8c647:id=cinder:auth_supported=cephx\;none:mon_host=10.38.65.71\:6789\;10.38.66.71\:6789\;10.38.67.71\:6789\;10.38.66.74\:6789,file.password-secret=virtio-disk1-secret0,format=raw,if=none,id=drive-virtio-disk1,serial=1c88c69a-6b88-4887-b11c-571cc6b8c647,cache=writeback,discard=unmap,throttling.bps-total=262144000,throttling.iops-total=5000 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=1010,id=hostnet0,vhost=on,vhostfd=1012 -device virtio-net-pci,host_mtu=1500,netdev=hostnet0,id=net0,mac=fa:16:3e:bf:58:7e,bus=pci.0,addr=0x3 -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/621d88e9-e803-4c26-9056-285a3320eeb2/console.log,logappend=off -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0,bus=usb.0,port=1 -vnc 10.33.66.150:130 -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on
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