On Tue, 10 Dec 2019 at 11:30, Arjit Chaudhary <[email protected]> wrote:
> Hi, > Aha so they're the same thing, was just curious as I've been noticing a > bit of odd behavior on OpenVZ 7 host-nodes where the node has 128G RAM, > around 30G used and it's swapping out 12G still instead of using the RAM as > vSwap. Swappiness is set to 10 as well. > Is it for containers or the host? You can use vzubc to check it. In general, it's normal for some swappiness to occur even in case there's enough free RAM, but I agree that the figure of 12G looks a bit too big. > > I'm using the following commands to build the container if that help, > > /usr/sbin/vzctl create $VMID --ostemplate $DISTRO > /usr/sbin/vzctl set $VMID --ipadd $VPS_IP --save > /usr/sbin/vzctl set $VMID --hostname vps.server.com --save > /usr/sbin/vzctl set $VMID --nameserver 8.8.8.8 --save > /usr/sbin/vzctl set $VMID --diskspace > $DISK_SPACE$DISK_VARIABLE:$DISK_SPACE$DISK_VARIABLE --save > /usr/sbin/vzctl set $VMID --ram $RAM$RAM_VARIABLE --swappages > $SWAP$SWAP_VARIABLE --save > > Again, please read the man page and use --swap not --swappages. If you're so inclined to use --swappages, please do it in a correct manner (barrier should be set to 0 as described). > > > On Wed, Dec 11, 2019 at 12:51 AM Kirill Kolyshkin <[email protected]> > wrote: > >> On Tue, 10 Dec 2019 at 10:42, Arjit Chaudhary <[email protected]> wrote: >> >>> Hi, >>> Is there any difference between setting vSwap on the OpenVZ 7 based >>> virtual machine? >>> >>> vzctl set $VMID --ram $RAM --swap $SWAP --save >>> >>> vs >>> >>> vzctl set $VMID --ram $RAM --swappages $SWAP --save >>> >>> >>> does --swap end up using real swap on the host-node >>> >>> and >>> >>> --swappages use the RAM as swap (ie, vswap) ? >>> >>> >>> or are both the same ? >>> >> >> Please take a look at vzctl man page, it's all described in there. In >> short, you should use --swap; >> --swappages is working but obsolete. >> >> >> _______________________________________________ >> Users mailing list >> [email protected] >> https://lists.openvz.org/mailman/listinfo/users >> > > > -- > Thanks, > Arjit Chaudhary > _______________________________________________ > Users mailing list > [email protected] > https://lists.openvz.org/mailman/listinfo/users >
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