Machine virtuelle Libvirt utilise deux fois plus de mémoire

Machine virtuelle CentOS 7, Lancé sur le serveur Ubuntu, Consume la mémoire:

Héberger:

# free -m

                            total        used        free      shared  buff/cache   available

Mem:          80140       71676        5346           7        3117        7655

Swap:          4095         265        3830



# ps_mem

  Private  +   Shared  =  RAM used   Program



  59.7 MiB +  67.4 MiB = 127.1 MiB   fail2ban-server (4)

189.2 MiB + 189.6 MiB = 378.8 MiB   mysqld

202.2 MiB + 206.9 MiB = 409.1 MiB   lxd (5)

128.5 MiB + 558.5 MiB = 687.0 MiB   systemd-journald (5)

  30.1 GiB +  30.3 GiB =  60.4 GiB   qemu-system-x86_64

---------------------------------

                                                  62.8 GiB

=================================



# virsh dommemstat ispmanager-master

actual 33554432

swap_in 1214268

swap_out 6718144

major_fault 429115

minor_fault 27183560666

unused 569424

available 32779288

usable 19841256

last_update 1597820230

rss 33239928

Un invité:

# free -m

                            total        used        free      shared  buff/cache   available

Mem:          32011       11235         548         978       20226       19403

Swap:         10235        2568        7667



# lsmod | grep virt

virtio_balloon         18015  0 

virtio_net             28114  0 

net_failover           18147  1 virtio_net

virtio_blk             18323  4 

virtio_console         28076  1 

virtio_pci             22985  0 

virtio_ring            22952  5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_console

virtio                 14959  5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_consol



# virsh dommemstat ispmanager-master

actual 33554432

swap_in 0

swap_out 168

major_fault 24275

minor_fault 796131035

unused 395204

available 32779288

usable 25097908

last_update 1597885620

rss 33535884

Configuration client:

<domain type="kvm">

<name>ispmanager-master</name>

<uuid>353f2014-53d7-413e-b635-60eb4e78751b</uuid>

<metadata>

<libosinfo:libosinfo xmlns:libosinfo="[url=http://libosinfo.org/xmlns/libvirt/domain/1.0">]http://libosinfo.org/xmlns/lib ... gt%3B[/url]

<libosinfo:os id="[url=http://centos.org/centos/7.0"></libosinfo:os>]http://centos.org/centos/7.0%2 ... gt%3B[/url]

</libosinfo:libosinfo>

</metadata>

<memory unit="KiB">33554432</memory>

<currentmemory unit="KiB">33554432</currentmemory>

<vcpu placement="static">10</vcpu>

<os>

<type arch="x86_64" machine="pc-i440fx-bionic">hvm</type>

</os>

<features>

<acpi></acpi>

<apic></apic>

<vmport state="off"></vmport>

</features>

<cpu check="partial" match="exact" mode="custom">

<model fallback="allow">Skylake-Server-IBRS</model>

</cpu>

<clock offset="utc">

<timer name="rtc" tickpolicy="catchup"></timer>

<timer name="pit" tickpolicy="delay"></timer>

<timer name="hpet" present="no"></timer>

</clock>

<on_poweroff>destroy</on_poweroff>

<on_reboot>restart</on_reboot>

<on_crash>destroy</on_crash>

<pm>

<suspend-to-mem enabled="no"></suspend-to-mem>

<suspend-to-disk enabled="no"></suspend-to-disk>

</pm>

<devices>

<emulator>/usr/bin/kvm-spice</emulator>

<disk device="disk" type="block">

<driver cache="none" io="native" name="qemu" type="raw"></driver>

<source dev="/dev/zvol/pool1/vm/isp-master"/>

<target bus="virtio" dev="vda"></target>

<boot order="1"></boot>

<address bus="0x00" domain="0x0000" function="0x0" slot="0x07" type="pci"></address>

</disk>

<disk device="disk" type="block">

<driver cache="none" io="native" name="qemu" type="raw"></driver>

<source dev="/dev/zvol/pool1/vm/isp-master-backups"/>

<target bus="virtio" dev="vdb"></target>

<address bus="0x00" domain="0x0000" function="0x0" slot="0x09" type="pci"></address>

</disk>

<disk device="disk" type="block">

<driver cache="none" io="native" name="qemu" type="raw"></driver>

<source dev="/dev/zvol/ssd1/vm/isp-master"/>

<target bus="virtio" dev="vdc"></target>

<address bus="0x00" domain="0x0000" function="0x0" slot="0x0a" type="pci"></address>

</disk>

<disk device="cdrom" type="file">

<driver name="qemu" type="raw"></driver>

<target bus="ide" dev="hda"></target>

<readonly></readonly>

<address bus="0" controller="0" target="0" type="drive" unit="0"></address>

</disk>

<controller index="0" model="ich9-ehci1" type="usb">

<address bus="0x00" domain="0x0000" function="0x7" slot="0x05" type="pci"></address>

</controller>

<controller index="0" model="ich9-uhci1" type="usb">

<master startport="0"></master>

<address bus="0x00" domain="0x0000" function="0x0" multifunction="on" slot="0x05" type="pci"></address>

</controller>

<controller index="0" model="ich9-uhci2" type="usb">

<master startport="2"></master>

<address bus="0x00" domain="0x0000" function="0x1" slot="0x05" type="pci"></address>

</controller>

<controller index="0" model="ich9-uhci3" type="usb">

<master startport="4"></master>

<address bus="0x00" domain="0x0000" function="0x2" slot="0x05" type="pci"></address>

</controller>

<controller index="0" model="pci-root" type="pci"></controller>

<controller index="0" type="ide">

<address bus="0x00" domain="0x0000" function="0x1" slot="0x01" type="pci"></address>

</controller>

<controller index="0" type="virtio-serial">

<address bus="0x00" domain="0x0000" function="0x0" slot="0x06" type="pci"></address>

</controller>

<interface type="bridge">

<mac address="52:54:00:83:c1:a8"></mac>

<source bridge="br0"/>

<model type="virtio"></model>

<address bus="0x00" domain="0x0000" function="0x0" slot="0x03" type="pci"></address>

</interface>

<serial type="pty">

<target port="0" type="isa-serial">

<model name="isa-serial"></model>

</target>

</serial>

<console type="pty">

<target port="0" type="serial"></target>

</console>

<channel type="unix">

<target name="org.qemu.guest_agent.0" type="virtio"></target>

<address bus="0" controller="0" port="1" type="virtio-serial"></address>

</channel>

<channel type="spicevmc">

<target name="com.redhat.spice.0" type="virtio"></target>

<address bus="0" controller="0" port="2" type="virtio-serial"></address>

</channel>

<input bus="usb" type="tablet"/>

<address bus="0" port="1" type="usb"></address>

<input bus="ps2" type="mouse"/>

<input bus="ps2" type="keyboard"/>

<graphics autoport="yes" type="spice">

<listen type="address"></listen>

</graphics>

<video>

<model heads="1" primary="yes" ram="65536" type="qxl" vgamem="16384" vram="65536"></model>

<address bus="0x00" domain="0x0000" function="0x0" slot="0x02" type="pci"></address>

</video>

<redirdev bus="usb" type="spicevmc">

<address bus="0" port="2" type="usb"></address>

</redirdev>

<redirdev bus="usb" type="spicevmc">

<address bus="0" port="3" type="usb"></address>

</redirdev>

<memballoon model="virtio">

<address bus="0x00" domain="0x0000" function="0x0" slot="0x08" type="pci"></address>

</memballoon>

</devices>

</domain>

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