On Fri, Sep 2, 2016 at 4:44 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt; wrote: > Hi > i am trying Ovirt 4.0 and i am getting some strange results when > comparing with Xenserver > > **The host machine* > Intel Core i5-4440 3.10GHz running at 3093 MHz > 8 Gb of RAM (1x8) > 500 Gb of Disk (seagate st500dm002 7200rpm) > CentOS 7 (netinstall for the most updated and stable packages) > > > > **How i am testing:* > I choose two benchmark tools, sysbench(epel-repo on centos) and > novabench(for windows guest, https://novabench.com ), then i make a > clean install of xenserver and create two guests(CentOS and Windows 7 SP1) > > > **The Guest specs* > 2 cores > 4 Gb of RAM > 60 Gb of disk (using virtIO in a NFS storage) > The nfs server is in the host? > Important note: only the testing guest are up on benchmark and i have > installed the drivers in guest > > > **The Sysbench disk test(creates 10Gb of data and do the bench):* > # sysbench --test=fileio --file-total-size=10G prepare > # sysbench --test=fileio --file-total-size=10G --file-test-mode=rndrw > --init-rng=on --max-time=300 --max-requests=0 run > > Host result: 2.9843Mb/sec > Ovirt result: 1.1561Mb/sec > Xenserver result: 2.9006Mb/sec > - Is this 2.9GiB/s or 2.9 MiB/s? - Are you testing using NFS in all versions? - What is the disk format? - How do you test io on the host? - What kind of nic is used? (1G, 10G?) > > **The novabench test:* > Ovirt result: 79Mb/s > Xenserver result: 101Mb/s > We need much more details to understand what do you test here. - For ovirt, can you share the vm command line, available in /var/log/libvirt/qemu/vmname.log? - For Xenserver - detailed description of the vm and the storage configuration? Nir

On Fri, Sep 2, 2016 at 5:33 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt; wrote: > Hi Nir, thanks for the answer > > > *The nfs server is in the host?* > Yes, i choose NFS to use as storage on ovirt host > > *- Is this 2.9GiB/s or 2.9 MiB/s?* > Is MiB/s, i put the full test on paste bin > centos guest on ovirt: > http://pastebin.com/d48qfvuf > > centos guest on xenserver: > http://pastebin.com/gqN3du29 > > how the test works: > https://www.howtoforge.com/how-to-benchmark-your-system-cpu- > file-io-mysql-with-sysbench > > *- Are you testing using NFS in all versions?* > i am using the v3 version > > *- What is the disk format?* > partion size format > / 20Gb xfs > swap 2 Gb xfs > /dados rest of disk xfs (note, this is the partition where i save the > ISOs,exports and VM disks) > > > *- How do you test io on the host?* > I do a clean install of centos and do the test before i install the ovirt > the test: > http://pastebin.com/7RKU7778 > > *- What kind of nic is used? (1G, 10G?)* > Is only a 100mbps :( > 100Mbps will not get you more than several MB/s. 11MB/s on a very bright day... > > *We need much more details to understand what do you test here.* > I have problems to upload the benchmark test on orvirt to novabench site, > so here is the screenshot(i make a mistake on the last email i get the > wrong value), is 86 Mb/s: > Which is not possible on the wire. Unless it's VM to VM? And the storage is local, which means it's the bandwidth of the physical disk itself? Y. > > ​ > And the novabench on xenserver: > https://novabench.com/compare.php?id=ba8dd628e4042dfc1f3d396 > 70b164ab11061671 > > *- For Xenserver - detailed description of the vm and the storage > configuration?* > The host is the same(i install xenserver, do the tests before i install > centos), the VM i use the same configuration of ovirt, 2 cores, 4 Gb of ram > and 60 Gb disk(in the default xenserver SR) > > *- For ovirt, can you share the vm command line, available in > /var/log/libvirt/qemu/vmname.**log?* > 2016-09-01 12:50:28.268+0000: starting up libvirt version: 1.2.17, > package: 13.el7_2.5 (CentOS BuildSystem <http://bugs.centos.org>;, > 2016-06-23-14:23:27, worker1.bsys.centos.org), qemu version: 2.3.0 > (qemu-kvm-ev-2.3.0-31.el7.16.1) > LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin > QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name vmcentos -S -machine > pc-i440fx-rhel7.2.0,accel=kvm,usb=off -cpu Haswell-noTSX -m > size=4194304k,slots=16,maxmem=4294967296k -realtime mlock=off -smp > 2,maxcpus=16,sockets=16,cores=1,threads=1 -numa > node,nodeid=0,cpus=0-1,mem=4096 -uuid 21872e4b-7699-4502-b1ef-2c058eff1c3c > -smbios type=1,manufacturer=oVirt,product=oVirt > Node,version=7-2.1511.el7.centos.2.10,serial=03AA02FC-0414- > 05F8-D906-710700080009,uuid=21872e4b-7699-4502-b1ef-2c058eff1c3c > -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/va > r/lib/libvirt/qemu/domain-vmcentos/monitor.sock,server,nowait -mon > chardev=charmonitor,id=monitor,mode=control -rtc > base=2016-09-01T09:50:28,driftfix=slew -global > kvm-pit.lost_tick_policy=discard -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=0x3 -device > virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x4 > -drive file=/rhev/data-center/mnt/ovirt.kemi.intranet:_dados_iso/ > 52ee9f87-9d38-48ec-8003-193262f81994/images/11111111-1111- > 1111-1111-111111111111/CentOS-7-x86_64-NetInstall-1511.iso, > if=none,id=drive-ide0-1-0,readonly=on,format=raw -device > ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 > -drive file=/rhev/data-center/00000001-0001-0001-0001-0000000002bb/ > 4ccdd1f3-ee79-4425-b6ed-5774643003fa/images/2ecfcf18- > ae84-4e73-922f-28b9cda9e6e1/800f05bf-23f7-4c9d-8c1d- > b2503592875f,if=none,id=drive-virtio-disk0,format=raw, > serial=2ecfcf18-ae84-4e73-922f-28b9cda9e6e1,cache=none, > werror=stop,rerror=stop,aio=threads -device > virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virti > o-disk0,id=virtio-disk0,bootindex=1 -chardev > socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/2 > 1872e4b-7699-4502-b1ef-2c058eff1c3c.com.redhat.rhevm.vdsm,server,nowait > -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel > 0,id=channel0,name=com.redhat.rhevm.vdsm -chardev > socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/2 > 1872e4b-7699-4502-b1ef-2c058eff1c3c.org.qemu.guest_agent.0,server,nowait > -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel > 1,id=channel1,name=org.qemu.guest_agent.0 -device usb-tablet,id=input0 > -vnc 192.168.0.189:0,password -k pt-br -device > VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device > virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on > 2016-09-01T12:50:28.307173Z qemu-kvm: warning: CPU(s) not present in any > NUMA nodes: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 > 2016-09-01T12:50:28.307371Z qemu-kvm: warning: All CPU(s) up to maxcpus > should be described in NUMA config > qemu: terminating on signal 15 from pid 1 > 2016-09-01 19:13:47.899+0000: shutting down > > > Thanks > > > > > > > > 2016-09-02 11:05 GMT-03:00 Nir Soffer <nsoffer(a)redhat.com&gt;: > >> On Fri, Sep 2, 2016 at 4:44 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br >> > wrote: >> >>> Hi >>> i am trying Ovirt 4.0 and i am getting some strange results when >>> comparing with Xenserver >>> >>> **The host machine* >>> Intel Core i5-4440 3.10GHz running at 3093 MHz >>> 8 Gb of RAM (1x8) >>> 500 Gb of Disk (seagate st500dm002 7200rpm) >>> CentOS 7 (netinstall for the most updated and stable packages) >>> >>> >>> >>> **How i am testing:* >>> I choose two benchmark tools, sysbench(epel-repo on centos) and >>> novabench(for windows guest, https://novabench.com ), then i make a >>> clean install of xenserver and create two guests(CentOS and Windows 7 SP1) >>> >>> >>> **The Guest specs* >>> 2 cores >>> 4 Gb of RAM >>> 60 Gb of disk (using virtIO in a NFS storage) >>> >> >> The nfs server is in the host? >> >> >>> Important note: only the testing guest are up on benchmark and i have >>> installed the drivers in guest >>> >>> >>> **The Sysbench disk test(creates 10Gb of data and do the bench):* >>> # sysbench --test=fileio --file-total-size=10G prepare >>> # sysbench --test=fileio --file-total-size=10G --file-test-mode=rndrw >>> --init-rng=on --max-time=300 --max-requests=0 run >>> >>> Host result: 2.9843Mb/sec >>> Ovirt result: 1.1561Mb/sec >>> Xenserver result: 2.9006Mb/sec >>> >> >> - Is this 2.9GiB/s or 2.9 MiB/s? >> - Are you testing using NFS in all versions? >> - What is the disk format? >> - How do you test io on the host? >> - What kind of nic is used? (1G, 10G?) >> >> >>> >>> **The novabench test:* >>> Ovirt result: 79Mb/s >>> Xenserver result: 101Mb/s >>> >> >> We need much more details to understand what do you test here. >> >> - For ovirt, can you share the vm command line, available in >> /var/log/libvirt/qemu/vmname.log? >> - For Xenserver - detailed description of the vm and the storage >> configuration? >> >> Nir >> > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >

On Fri, Sep 2, 2016 at 6:11 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt;

> > Hi Yaniv > > Sorry guys, i don't explain well on my first mail, i notice a bad IO

But where is the disk? If it's across the network, then network is

Y. > > > > > > > > > 2016-09-02 12:04 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: >> >> On Fri, Sep 2, 2016 at 5:33 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt;

>>> >>> Hi Nir, thanks for the answer >>> >>> The nfs server is in the host? >>> Yes, i choose NFS to use as storage on ovirt host >>> >>> - Is this 2.9GiB/s or 2.9 MiB/s? >>> Is MiB/s, i put the full test on paste bin >>> centos guest on ovirt: >>> http://pastebin.com/d48qfvuf >>> >>> centos guest on xenserver: >>> http://pastebin.com/gqN3du29 >>> >>> how the test works: >>>

>>> >>> - Are you testing using NFS in all versions? >>> i am using the v3 version >>> >>> - What is the disk format? >>> partion size format >>> / 20Gb xfs >>> swap 2 Gb xfs >>> /dados rest of disk xfs (note, this is the partition where i save

>>> >>> - How do you test io on the host? >>> I do a clean install of centos and do the test before i install the

>>> the test: >>> http://pastebin.com/7RKU7778 >>> >>> - What kind of nic is used? (1G, 10G?) >>> Is only a 100mbps :( >> >> >> 100Mbps will not get you more than several MB/s. 11MB/s on a very

>>> >>> >>> We need much more details to understand what do you test here. >>> I have problems to upload the benchmark test on orvirt to novabench

>> >> >> Which is not possible on the wire. Unless it's VM to VM? And the

>> Y. >> >> >>> >>> >>> ​ >>> And the novabench on xenserver: >>>

>>> >>> - For Xenserver - detailed description of the vm and the storage

>>> The host is the same(i install xenserver, do the tests before i

>>> >>> - For ovirt, can you share the vm command line, available in

>>> 2016-09-01 12:50:28.268+0000: starting up libvirt version: 1.2.17,

>>> LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin

>>> 2016-09-01T12:50:28.307173Z qemu-kvm: warning: CPU(s) not present in

>>> 2016-09-01T12:50:28.307371Z qemu-kvm: warning: All CPU(s) up to

>>> qemu: terminating on signal 15 from pid 1 >>> 2016-09-01 19:13:47.899+0000: shutting down >>> >>> >>> Thanks >>> >>> >>> >>> >>> >>> >>> >>> 2016-09-02 11:05 GMT-03:00 Nir Soffer <nsoffer(a)redhat.com&gt;: >>>> >>>> On Fri, Sep 2, 2016 at 4:44 PM, Gabriel Ozaki <

>>>>> >>>>> Hi >>>>> i am trying Ovirt 4.0 and i am getting some strange results when

>>>>> >>>>> *The host machine >>>>> Intel Core i5-4440 3.10GHz running at 3093 MHz >>>>> 8 Gb of RAM (1x8) >>>>> 500 Gb of Disk (seagate st500dm002 7200rpm) >>>>> CentOS 7 (netinstall for the most updated and stable packages) >>>>> >>>>> >>>>> *How i am testing: >>>>> I choose two benchmark tools, sysbench(epel-repo on centos) and

>>>>> >>>>> *The Guest specs >>>>> 2 cores >>>>> 4 Gb of RAM >>>>> 60 Gb of disk (using virtIO in a NFS storage) >>>> >>>> >>>> The nfs server is in the host? >>>> >>>>> >>>>> Important note: only the testing guest are up on benchmark and i

>>>>> >>>>> *The Sysbench disk test(creates 10Gb of data and do the bench): >>>>> # sysbench --test=fileio --file-total-size=10G prepare >>>>> # sysbench --test=fileio --file-total-size=10G

>>>>> >>>>> Host result: 2.9843Mb/sec >>>>> Ovirt result: 1.1561Mb/sec >>>>> Xenserver result: 2.9006Mb/sec >>>> >>>> >>>> - Is this 2.9GiB/s or 2.9 MiB/s? >>>> - Are you testing using NFS in all versions? >>>> - What is the disk format? >>>> - How do you test io on the host? >>>> - What kind of nic is used? (1G, 10G?) >>>> >>>>> >>>>> *The novabench test: >>>>> Ovirt result: 79Mb/s >>>>> Xenserver result: 101Mb/s >>>> >>>> >>>> We need much more details to understand what do you test here. >>>> >>>> - For ovirt, can you share the vm command line, available in

>>>> - For Xenserver - detailed description of the vm and the storage

>>>> >>>> Nir >>> >>> >>> >>> _______________________________________________ >>> Users mailing list >>> Users(a)ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >>> >> > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

Hi Yaniv and Sandro The disk is in the same machine then ovirt-engine

Thanks 2016-09-02 15:31 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: > > > On Fri, Sep 2, 2016 at 6:11 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt; > wrote: > >> Hi Yaniv >> >> Sorry guys, i don't explain well on my first mail, i notice a bad IO >> performance on *disk* benchmarks, the network are working really fine >> > > But where is the disk? If it's across the network, then network is > involved and is certainly a bottleneck. > Y. > > >> >> >> >> >> >> >> >> 2016-09-02 12:04 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: >> >>> On Fri, Sep 2, 2016 at 5:33 PM, Gabriel Ozaki < >>> gabriel.ozaki(a)kemi.com.br&gt; wrote: >>> >>>> Hi Nir, thanks for the answer >>>> >>>> >>>> *The nfs server is in the host?* >>>> Yes, i choose NFS to use as storage on ovirt host >>>> >>>> *- Is this 2.9GiB/s or 2.9 MiB/s?* >>>> Is MiB/s, i put the full test on paste bin >>>> centos guest on ovirt: >>>> http://pastebin.com/d48qfvuf >>>> >>>> centos guest on xenserver: >>>> http://pastebin.com/gqN3du29 >>>> >>>> how the test works: >>>> https://www.howtoforge.com/how-to-benchmark-your-system-cpu- >>>> file-io-mysql-with-sysbench >>>> >>>> *- Are you testing using NFS in all versions?* >>>> i am using the v3 version >>>> >>>> *- What is the disk format?* >>>> partion size format >>>> / 20Gb xfs >>>> swap 2 Gb xfs >>>> /dados rest of disk xfs (note, this is the partition where i save >>>> the ISOs,exports and VM disks) >>>> >>>> >>>> *- How do you test io on the host?* >>>> I do a clean install of centos and do the test before i install the >>>> ovirt >>>> the test: >>>> http://pastebin.com/7RKU7778 >>>> >>>> *- What kind of nic is used? (1G, 10G?)* >>>> Is only a 100mbps :( >>>> >>> >>> 100Mbps will not get you more than several MB/s. 11MB/s on a very >>> bright day... >>> >>>> >>>> *We need much more details to understand what do you test here.* >>>> I have problems to upload the benchmark test on orvirt to novabench >>>> site, so here is the screenshot(i make a mistake on the last email i get >>>> the wrong value), is 86 Mb/s: >>>> >>> >>> Which is not possible on the wire. Unless it's VM to VM? And the >>> storage is local, which means it's the bandwidth of the physical disk >>> itself? >>> Y. >>> >>> >>> >>>> >>>> ​ >>>> And the novabench on xenserver: >>>> https://novabench.com/compare.php?id=ba8dd628e4042dfc1f3d396 >>>> 70b164ab11061671 >>>> >>>> *- For Xenserver - detailed description of the vm and the storage >>>> configuration?* >>>> The host is the same(i install xenserver, do the tests before i >>>> install centos), the VM i use the same configuration of ovirt, 2 cores, 4 >>>> Gb of ram and 60 Gb disk(in the default xenserver SR) >>>> >>>> *- For ovirt, can you share the vm command line, available in >>>> /var/log/libvirt/qemu/vmname.**log?* >>>> 2016-09-01 12:50:28.268+0000: starting up libvirt version: 1.2.17, >>>> package: 13.el7_2.5 (CentOS BuildSystem <http://bugs.centos.org>;, >>>> 2016-06-23-14:23:27, worker1.bsys.centos.org), qemu version: 2.3.0 >>>> (qemu-kvm-ev-2.3.0-31.el7.16.1) >>>> LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin >>>> QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name vmcentos -S -machine >>>> pc-i440fx-rhel7.2.0,accel=kvm,usb=off -cpu Haswell-noTSX -m >>>> size=4194304k,slots=16,maxmem=4294967296k -realtime mlock=off -smp >>>> 2,maxcpus=16,sockets=16,cores=1,threads=1 -numa >>>> node,nodeid=0,cpus=0-1,mem=4096 -uuid 21872e4b-7699-4502-b1ef-2c058eff1c3c >>>> -smbios type=1,manufacturer=oVirt,product=oVirt >>>> Node,version=7-2.1511.el7.centos.2.10,serial=03AA02FC-0414-0 >>>> 5F8-D906-710700080009,uuid=21872e4b-7699-4502-b1ef-2c058eff1c3c >>>> -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/va >>>> r/lib/libvirt/qemu/domain-vmcentos/monitor.sock,server,nowait -mon >>>> chardev=charmonitor,id=monitor,mode=control -rtc >>>> base=2016-09-01T09:50:28,driftfix=slew -global >>>> kvm-pit.lost_tick_policy=discard -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=0x3 -device >>>> virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x4 >>>> -drive file=/rhev/data-center/mnt/ovirt.kemi.intranet:_dados_iso/52 >>>> ee9f87-9d38-48ec-8003-193262f81994/images/11111111-1111-1111 >>>> -1111-111111111111/CentOS-7-x86_64-NetInstall-1511.iso,if=no >>>> ne,id=drive-ide0-1-0,readonly=on,format=raw -device >>>> ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 >>>> -drive file=/rhev/data-center/00000001-0001-0001-0001-0000000002bb/ >>>> 4ccdd1f3-ee79-4425-b6ed-5774643003fa/images/2ecfcf18-ae84-4e >>>> 73-922f-28b9cda9e6e1/800f05bf-23f7-4c9d-8c1d-b2503592875f,if >>>> =none,id=drive-virtio-disk0,format=raw,serial=2ecfcf18-ae84- >>>> 4e73-922f-28b9cda9e6e1,cache=none,werror=stop,rerror=stop,aio=threads >>>> -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virti >>>> o-disk0,id=virtio-disk0,bootindex=1 -chardev >>>> socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/2 >>>> 1872e4b-7699-4502-b1ef-2c058eff1c3c.com.redhat.rhevm.vdsm,server,nowait >>>> -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel >>>> 0,id=channel0,name=com.redhat.rhevm.vdsm -chardev >>>> socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/2 >>>> 1872e4b-7699-4502-b1ef-2c058eff1c3c.org.qemu.guest_agent.0,server,nowait >>>> -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel >>>> 1,id=channel1,name=org.qemu.guest_agent.0 -device >>>> usb-tablet,id=input0 -vnc 192.168.0.189:0,password -k pt-br -device >>>> VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device >>>> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on >>>> 2016-09-01T12:50:28.307173Z qemu-kvm: warning: CPU(s) not present in >>>> any NUMA nodes: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>>> 2016-09-01T12:50:28.307371Z qemu-kvm: warning: All CPU(s) up to >>>> maxcpus should be described in NUMA config >>>> qemu: terminating on signal 15 from pid 1 >>>> 2016-09-01 19:13:47.899+0000: shutting down >>>> >>>> >>>> Thanks >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> 2016-09-02 11:05 GMT-03:00 Nir Soffer <nsoffer(a)redhat.com&gt;: >>>> >>>>> On Fri, Sep 2, 2016 at 4:44 PM, Gabriel Ozaki < >>>>> gabriel.ozaki(a)kemi.com.br&gt; wrote: >>>>> >>>>>> Hi >>>>>> i am trying Ovirt 4.0 and i am getting some strange results when >>>>>> comparing with Xenserver >>>>>> >>>>>> **The host machine* >>>>>> Intel Core i5-4440 3.10GHz running at 3093 MHz >>>>>> 8 Gb of RAM (1x8) >>>>>> 500 Gb of Disk (seagate st500dm002 7200rpm) >>>>>> CentOS 7 (netinstall for the most updated and stable packages) >>>>>> >>>>>> >>>>>> >>>>>> **How i am testing:* >>>>>> I choose two benchmark tools, sysbench(epel-repo on centos) and >>>>>> novabench(for windows guest, https://novabench.com ), then i make a >>>>>> clean install of xenserver and create two guests(CentOS and Windows 7 SP1) >>>>>> >>>>>> >>>>>> **The Guest specs* >>>>>> 2 cores >>>>>> 4 Gb of RAM >>>>>> 60 Gb of disk (using virtIO in a NFS storage) >>>>>> >>>>> >>>>> The nfs server is in the host? >>>>> >>>>> >>>>>> Important note: only the testing guest are up on benchmark and i >>>>>> have installed the drivers in guest >>>>>> >>>>>> >>>>>> **The Sysbench disk test(creates 10Gb of data and do the bench):* >>>>>> # sysbench --test=fileio --file-total-size=10G prepare >>>>>> # sysbench --test=fileio --file-total-size=10G >>>>>> --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run >>>>>> >>>>>> Host result: 2.9843Mb/sec >>>>>> Ovirt result: 1.1561Mb/sec >>>>>> Xenserver result: 2.9006Mb/sec >>>>>> >>>>> >>>>> - Is this 2.9GiB/s or 2.9 MiB/s? >>>>> - Are you testing using NFS in all versions? >>>>> - What is the disk format? >>>>> - How do you test io on the host? >>>>> - What kind of nic is used? (1G, 10G?) >>>>> >>>>> >>>>>> >>>>>> **The novabench test:* >>>>>> Ovirt result: 79Mb/s >>>>>> Xenserver result: 101Mb/s >>>>>> >>>>> >>>>> We need much more details to understand what do you test here. >>>>> >>>>> - For ovirt, can you share the vm command line, available in >>>>> /var/log/libvirt/qemu/vmname.log? >>>>> - For Xenserver - detailed description of the vm and the storage >>>>> configuration? >>>>> >>>>> Nir >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>> >> >

Hi Yaniv This results is averange in sysbench, my machine for example gets 1.3905Mb/sec, i don't know how this test really works and i will search about it So i try to make a* bonnie++ test* ( reference http://support.commgate.net/index.php?/Knowledgebase/Article/View/212 ): Xenserver speeds: Write speed: 91076 KB/sec ReWrite speed: 57885 KB/sec Read speed: 215457 KB/sec (Strange, too high) Num of Blocks: 632.4 Ovirt Speeds: Write speed: 111597 KB/sec (22% more then xenserver) ReWrite speed: 73402 KB/sec (26% more then xenserver) Read speed: 121537 KB/sec (44% less then xenserver) Num of Blocks: 537.2 ( 15% less then xenserver) result: a draw?

And* DD test *( reference: https://romanrm.net/dd-benchmark )*:* [root@xenserver teste]# echo 2 > /proc/sys/vm/drop_caches && sync [root@xenserver teste]# dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync

256+0 registros de saída 268435456 bytes (268 MB) copiados, 1,40111 s, 192 MB/s (Again, too high)

[root@ovirt teste]# echo 2 > /proc/sys/vm/drop_caches && sync [root@ovirt teste]# dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync 256+0 registros de entrada 256+0 registros de saída 268435456 bytes (268 MB) copiados, 2,31288 s, 116 MB/s (Really fair, the host result is 124 MB/s) *HDparm *(FAIL on xenserver) [root@xenserver teste]# hdparm -Tt /dev/xvda1 /dev/xvda1: Timing cached reads: 25724 MB in 2.00 seconds = 12882.77 MB/sec Timing buffered disk reads: 2984 MB in 3.00 seconds = 994.43 MB/sec ( 8 times the expect value, something is very wrong) [root@ovirt teste]# hdparm -Tt /dev/vda1 /dev/vda1: Timing cached reads: 25042 MB in 2.00 seconds = 12540.21 MB/sec Timing buffered disk reads: 306 MB in 3.01 seconds = 101.66 MB/sec(ok result) There is something strange in xenserver affecting the results, probably the best choice is close the thread and start the studies about benchmarks

Thanks 2016-09-05 12:01 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: > > > On Mon, Sep 5, 2016 at 1:45 PM, Gabriel Ozaki <gabriel.ozaki(a)kemi.com.br&gt; > wrote: > >> Hi Yaniv and Sandro >> >> The disk is in the same machine then ovirt-engine >> > > I'm looking back at your results, and something is terribly wrong there: > For example, sysbench: > > Host result: 2.9843Mb/sec > Ovirt result: 1.1561Mb/sec > Xenserver result: 2.9006Mb/sec > > This is slower than a USB1 disk on key performance. I don't know what to > make of it, but it's completely bogus. Even plain QEMU can get better > results than this. > And the 2nd benchmark: > > > **The novabench test:* > Ovirt result: 79Mb/s > Xenserver result: 101Mb/s > > This is better, but still very slow. If I translate it to MB/s, it's > ~10-12MBs - still very very slow. > If, however, this is MB/sec, then this makes sense - and is probably as > much as you can get from a single spindle. > The difference between XenServer and oVirt are more likely have to do > with caching than anything else. I don't know what the caching settings of > XenServer - can you ensure no caching ('direct IO') is used? > > > >> Thanks >> >> >> >> >> >> 2016-09-02 15:31 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: >> >>> >>> >>> On Fri, Sep 2, 2016 at 6:11 PM, Gabriel Ozaki < >>> gabriel.ozaki(a)kemi.com.br&gt; wrote: >>> >>>> Hi Yaniv >>>> >>>> Sorry guys, i don't explain well on my first mail, i notice a bad IO >>>> performance on *disk* benchmarks, the network are working really fine >>>> >>> >>> But where is the disk? If it's across the network, then network is >>> involved and is certainly a bottleneck. >>> Y. >>> >>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> 2016-09-02 12:04 GMT-03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: >>>> >>>>> On Fri, Sep 2, 2016 at 5:33 PM, Gabriel Ozaki < >>>>> gabriel.ozaki(a)kemi.com.br&gt; wrote: >>>>> >>>>>> Hi Nir, thanks for the answer >>>>>> >>>>>> >>>>>> *The nfs server is in the host?* >>>>>> Yes, i choose NFS to use as storage on ovirt host >>>>>> >>>>>> *- Is this 2.9GiB/s or 2.9 MiB/s?* >>>>>> Is MiB/s, i put the full test on paste bin >>>>>> centos guest on ovirt: >>>>>> http://pastebin.com/d48qfvuf >>>>>> >>>>>> centos guest on xenserver: >>>>>> http://pastebin.com/gqN3du29 >>>>>> >>>>>> how the test works: >>>>>> https://www.howtoforge.com/how-to-benchmark-your-system-cpu- >>>>>> file-io-mysql-with-sysbench >>>>>> >>>>>> *- Are you testing using NFS in all versions?* >>>>>> i am using the v3 version >>>>>> >>>>>> *- What is the disk format?* >>>>>> partion size format >>>>>> / 20Gb xfs >>>>>> swap 2 Gb xfs >>>>>> /dados rest of disk xfs (note, this is the partition where i save >>>>>> the ISOs,exports and VM disks) >>>>>> >>>>>> >>>>>> *- How do you test io on the host?* >>>>>> I do a clean install of centos and do the test before i install the >>>>>> ovirt >>>>>> the test: >>>>>> http://pastebin.com/7RKU7778 >>>>>> >>>>>> *- What kind of nic is used? (1G, 10G?)* >>>>>> Is only a 100mbps :( >>>>>> >>>>> >>>>> 100Mbps will not get you more than several MB/s. 11MB/s on a very >>>>> bright day... >>>>> >>>>>> >>>>>> *We need much more details to understand what do you test here.* >>>>>> I have problems to upload the benchmark test on orvirt to novabench >>>>>> site, so here is the screenshot(i make a mistake on the last email i get >>>>>> the wrong value), is 86 Mb/s: >>>>>> >>>>> >>>>> Which is not possible on the wire. Unless it's VM to VM? And the >>>>> storage is local, which means it's the bandwidth of the physical disk >>>>> itself? >>>>> Y. >>>>> >>>>> >>>>> >>>>>> >>>>>> ​ >>>>>> And the novabench on xenserver: >>>>>> https://novabench.com/compare.php?id=ba8dd628e4042dfc1f3d396 >>>>>> 70b164ab11061671 >>>>>> >>>>>> *- For Xenserver - detailed description of the vm and the storage >>>>>> configuration?* >>>>>> The host is the same(i install xenserver, do the tests before i >>>>>> install centos), the VM i use the same configuration of ovirt, 2 cores, 4 >>>>>> Gb of ram and 60 Gb disk(in the default xenserver SR) >>>>>> >>>>>> *- For ovirt, can you share the vm command line, available in >>>>>> /var/log/libvirt/qemu/vmname.**log?* >>>>>> 2016-09-01 12:50:28.268+0000: starting up libvirt version: 1.2.17, >>>>>> package: 13.el7_2.5 (CentOS BuildSystem <http://bugs.centos.org>;, >>>>>> 2016-06-23-14:23:27, worker1.bsys.centos.org), qemu version: 2.3.0 >>>>>> (qemu-kvm-ev-2.3.0-31.el7.16.1) >>>>>> LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin >>>>>> QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name vmcentos -S -machine >>>>>> pc-i440fx-rhel7.2.0,accel=kvm,usb=off -cpu Haswell-noTSX -m >>>>>> size=4194304k,slots=16,maxmem=4294967296k -realtime mlock=off -smp >>>>>> 2,maxcpus=16,sockets=16,cores=1,threads=1 -numa >>>>>> node,nodeid=0,cpus=0-1,mem=4096 -uuid 21872e4b-7699-4502-b1ef-2c058eff1c3c >>>>>> -smbios type=1,manufacturer=oVirt,product=oVirt >>>>>> Node,version=7-2.1511.el7.centos.2.10,serial=03AA02FC-0414-0 >>>>>> 5F8-D906-710700080009,uuid=21872e4b-7699-4502-b1ef-2c058eff1c3c >>>>>> -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/va >>>>>> r/lib/libvirt/qemu/domain-vmcentos/monitor.sock,server,nowait -mon >>>>>> chardev=charmonitor,id=monitor,mode=control -rtc >>>>>> base=2016-09-01T09:50:28,driftfix=slew -global >>>>>> kvm-pit.lost_tick_policy=discard -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=0x3 -device >>>>>> virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x4 >>>>>> -drive file=/rhev/data-center/mnt/ovirt.kemi.intranet:_dados_iso/52 >>>>>> ee9f87-9d38-48ec-8003-193262f81994/images/11111111-1111-1111 >>>>>> -1111-111111111111/CentOS-7-x86_64-NetInstall-1511.iso,if=no >>>>>> ne,id=drive-ide0-1-0,readonly=on,format=raw -device >>>>>> ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=2 >>>>>> -drive file=/rhev/data-center/00000001-0001-0001-0001-0000000002bb/ >>>>>> 4ccdd1f3-ee79-4425-b6ed-5774643003fa/images/2ecfcf18-ae84-4e >>>>>> 73-922f-28b9cda9e6e1/800f05bf-23f7-4c9d-8c1d-b2503592875f,if >>>>>> =none,id=drive-virtio-disk0,format=raw,serial=2ecfcf18-ae84- >>>>>> 4e73-922f-28b9cda9e6e1,cache=none,werror=stop,rerror=stop,aio=threads >>>>>> -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virti >>>>>> o-disk0,id=virtio-disk0,bootindex=1 -chardev >>>>>> socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/2 >>>>>> 1872e4b-7699-4502-b1ef-2c058eff1c3c.com.redhat.rhevm.vdsm,server,nowait >>>>>> -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel >>>>>> 0,id=channel0,name=com.redhat.rhevm.vdsm -chardev >>>>>> socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/2 >>>>>> 1872e4b-7699-4502-b1ef-2c058eff1c3c.org.qemu.guest_agent.0,server,nowait >>>>>> -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel >>>>>> 1,id=channel1,name=org.qemu.guest_agent.0 -device >>>>>> usb-tablet,id=input0 -vnc 192.168.0.189:0,password -k pt-br -device >>>>>> VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device >>>>>> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on >>>>>> 2016-09-01T12:50:28.307173Z qemu-kvm: warning: CPU(s) not present in >>>>>> any NUMA nodes: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>>>>> 2016-09-01T12:50:28.307371Z qemu-kvm: warning: All CPU(s) up to >>>>>> maxcpus should be described in NUMA config >>>>>> qemu: terminating on signal 15 from pid 1 >>>>>> 2016-09-01 19:13:47.899+0000: shutting down >>>>>> >>>>>> >>>>>> Thanks >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> 2016-09-02 11:05 GMT-03:00 Nir Soffer <nsoffer(a)redhat.com&gt;: >>>>>> >>>>>>> On Fri, Sep 2, 2016 at 4:44 PM, Gabriel Ozaki < >>>>>>> gabriel.ozaki(a)kemi.com.br&gt; wrote: >>>>>>> >>>>>>>> Hi >>>>>>>> i am trying Ovirt 4.0 and i am getting some strange results when >>>>>>>> comparing with Xenserver >>>>>>>> >>>>>>>> **The host machine* >>>>>>>> Intel Core i5-4440 3.10GHz running at 3093 MHz >>>>>>>> 8 Gb of RAM (1x8) >>>>>>>> 500 Gb of Disk (seagate st500dm002 7200rpm) >>>>>>>> CentOS 7 (netinstall for the most updated and stable packages) >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> **How i am testing:* >>>>>>>> I choose two benchmark tools, sysbench(epel-repo on centos) and >>>>>>>> novabench(for windows guest, https://novabench.com ), then i make >>>>>>>> a clean install of xenserver and create two guests(CentOS and Windows 7 SP1) >>>>>>>> >>>>>>>> >>>>>>>> **The Guest specs* >>>>>>>> 2 cores >>>>>>>> 4 Gb of RAM >>>>>>>> 60 Gb of disk (using virtIO in a NFS storage) >>>>>>>> >>>>>>> >>>>>>> The nfs server is in the host? >>>>>>> >>>>>>> >>>>>>>> Important note: only the testing guest are up on benchmark and i >>>>>>>> have installed the drivers in guest >>>>>>>> >>>>>>>> >>>>>>>> **The Sysbench disk test(creates 10Gb of data and do the bench):* >>>>>>>> # sysbench --test=fileio --file-total-size=10G prepare >>>>>>>> # sysbench --test=fileio --file-total-size=10G >>>>>>>> --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run >>>>>>>> >>>>>>>> Host result: 2.9843Mb/sec >>>>>>>> Ovirt result: 1.1561Mb/sec >>>>>>>> Xenserver result: 2.9006Mb/sec >>>>>>>> >>>>>>> >>>>>>> - Is this 2.9GiB/s or 2.9 MiB/s? >>>>>>> - Are you testing using NFS in all versions? >>>>>>> - What is the disk format? >>>>>>> - How do you test io on the host? >>>>>>> - What kind of nic is used? (1G, 10G?) >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> **The novabench test:* >>>>>>>> Ovirt result: 79Mb/s >>>>>>>> Xenserver result: 101Mb/s >>>>>>>> >>>>>>> >>>>>>> We need much more details to understand what do you test here. >>>>>>> >>>>>>> - For ovirt, can you share the vm command line, available in >>>>>>> /var/log/libvirt/qemu/vmname.log? >>>>>>> - For Xenserver - detailed description of the vm and the storage >>>>>>> configuration? >>>>>>> >>>>>>> Nir >>>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Users mailing list >>>>>> Users(a)ovirt.org >>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>> >>>>>> >>>>> >>>> >>> >> >