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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] vlans directly configured inside each domU using the default xen bridge have very poor performance ...
Hello, vlans directly configured inside each domU using the default xen bridge have poor performance ... I've configured somes vlan using 2nd technic that Felipe Alfaro explain in it's blog : http://felipe-alfaro.org/blog/category/xen/ For example with OpenLdap I have got very very poor performance more than 3 minuts to make an ldap search on a small branch with less 250 entries ... and this process finish to hang the domU ... So I've look at /proc/interupts. I've read somewhere that a too high value might significate a bridge configuration problem ... ??? #cat /proc/interrupts CPU0 256: 39881 Dynamic-irq timer0 257: 0 Dynamic-irq resched0 258: 0 Dynamic-irq callfunc0 259: 235 Dynamic-irq xenbus 260: 3130 Dynamic-irq xencons 261: 5686 Dynamic-irq blkif 262: 1 Dynamic-irq blkif 263: 31658 Dynamic-irq eth0 I've setup this VM inside using one bridge per vlan with vlan configured into dom0 ... Now ldap search are very quick and the server seems to be stable So all to seems works well except some problem with ARP I've forced the MAC but sometimes seems that arp values are incorrect ... very strange ! I've got to 2 redundants routers with keepalived to going out to Internet ... So my default gateway is always a virtual IP ... and this seems to be a problem with arp Moreover value of eth0 interupts is + or - the half of the old config ... #cat /proc/interrupts CPU0 256: 25818 Dynamic-irq timer0 257: 0 Dynamic-irq resched0 258: 0 Dynamic-irq callfunc0 259: 237 Dynamic-irq xenbus 260: 819 Dynamic-irq xencons 261: 3434 Dynamic-irq blkif 262: 1 Dynamic-irq blkif 263: 16754 Dynamic-irq eth0 _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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