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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Xen network tune for fileserver in DomU
Peter, Could You elaborate Your opinion? Why not? What are cons? Why not to use one of DomU as shared storage for others DomUs,hosts on a same network or even on the same physical node? Facts and numbers would be greate. Does use DomO for same purpose have a sense? Are pros and cons for this solution discussable? 2009/6/25 Peter Booth <peter_booth@xxxxxx>: > Alexandr, > > Using Xen for a fileserver doesn't make much sense. It's an inefficient use > of resources. > > Peter > > Sent from my iPhone > > On Jun 25, 2009, at 10:47 AM, "Alexandr R. Ogurtzoff" <iscander@xxxxxxxxx> > wrote: > >> Hello, gentlemen >> I need wise advice about how to tune network for performance usage >> file server under domU >> I use bridged network. >> On dom0 network settings are: >> auto eth0 >> iface eth0 inet static >> address 192.168.1.100 >> netmask 255.255.255.0 >> network 192.168.1.0 >> broadcast 192.168.1.255 >> up /etc/xen/scripts/network-bridge start bridge=br0 netdev=eth0 >> up ifconfig br0 up >> #up route add default gw 192.168.1.1 >> gateway 192.168.1.1 >> dns-nameserver 192.168.1.1 >> >> $ brctl show >> bridge name bridge id STP enabled interfaces >> br0 8000.000c76ba7b5e no peth0 >> vif1.0 >> vif2.0 >> >> I use two domU instances: >> app 192.168.1.110 >> file 192.168.1.140 >> >> ... and GlusterFS on file to export filesystem. >> >> then test it if bonnie I got next results: >> >> Version 1.03c ------Sequential Output------ --Sequential Input- >> --Random- >> -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- >> --Seeks-- >> Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP >> /sec %CP >> app.cluster.xe 128M 5623 17 16612 5 1818 3 15254 46 26112 9 >> 123.5 0 >> file.cluster.x 128M 9854 29 21547 4 3515 3 16907 44 30468 7 >> 188.1 1 >> iscander 128M 11308 37 11344 1 555 0 10589 33 11306 1 >> 70.1 0 >> file.cluster.x 128M 22408 74 23801 11 14326 4 18696 43 48676 4 >> 545.8 1 >> ------Sequential Create------ --------Random >> Create-------- >> -Create-- --Read--- -Delete-- -Create-- --Read--- >> -Delete-- >> files:max:min /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP >> /sec %CP >> app.cluster.xen 16 242 4 1106 5 300 4 242 4 1144 6 >> 288 4 >> file.cluster.xen 16 873 8 4112 11 1009 6 792 8 4351 10 >> 1165 8 >> iscander 16 565 2 2317 2 764 1 575 2 2546 2 >> 755 1 >> file.cluster.xen 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ >> +++++ +++ >> >> >> >> first one then run on app instance with /data mount from "file" by >> glusterfs >> second then test with /import mount from "file" by itself by glusterfs >> third line is then mount /data to my host in the same LAN (100Mbit) >> last is then test _local_ /data on "file" (ext3) localy >> >> I surprised why my external host works faster with mounted share then >> internals - I mean located on the same physical node VMs? >> How can I tune network stack for Xen and if it really Xen's network >> implemenation penalty ? >> >> /etc/xen/app.cluster.xen >> # this is autogenerated by Ganeti, please do not edit >> # >> kernel = '/boot/vmlinuz-2.6-xenU' >> ramdisk = '/boot/initrd-2.6-xenU' >> memory = 256 >> vcpus = 1 >> name = 'app.cluster.xen' >> vif = ['mac=aa:00:00:3e:98:e4, bridge=br0'] >> disk = ['phy:/var/run/ganeti/instance-disks/app.cluster.xen:0,sda,w'] >> root = '/dev/xvda1' >> on_poweroff = 'destroy' >> on_reboot = 'restart' >> on_crash = 'restart' >> extra = 'console=hvc0' >> >> /etc/xen/file.cluster.xen >> # this is autogenerated by Ganeti, please do not edit >> # >> kernel = '/boot/vmlinuz-2.6-xenU' >> ramdisk = '/boot/initrd-2.6-xenU' >> memory = 128 >> vcpus = 1 >> name = 'file.cluster.xen' >> vif = ['mac=aa:00:00:d5:0f:6d, bridge=br0, ip=192.168.1.140'] >> disk = >> ['phy:/var/run/ganeti/instance-disks/file.cluster.xen:0,sda,w','phy:/var/run/ganeti/instance-disks/file.cluster.xen:1,sdb,w','phy:/var/run/ganeti/instance-disks/file.cluster.xen:2,sdc,w'] >> root = '/dev/xvda1' >> on_poweroff = 'destroy' >> on_reboot = 'restart' >> on_crash = 'restart' >> extra = 'console=hvc0' >> -- >> My best wishes. >> Alexandr Ogurtsov. >> >> Linux is very friendly it is just picky who its friends are >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@xxxxxxxxxxxxxxxxxxx >> http://lists.xensource.com/xen-users > -- My best wishes. Alexandr Ogurtsov. Linux is very friendly it is just picky who its friends are _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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