New Dell R510, 40GB ram, 2x quad procs Dom0 allocated 2GB Two test DomUs - insignificant use. one (default) bridge rsync two lvms from mounted NFS shares - on Dom0 It was running fine, but suddenly the transfer slows down to a crawl ................ AND the system - Dom0 is almost non-responsive !!!!!! Any ideas or suggestions would be greatly appreciated. BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 Regards, frank _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 10-11-12 04:26 PM, fpt stl wrote:> New Dell R510, 40GB ram, 2x quad procs > Dom0 allocated 2GB > Two test DomUs - insignificant use. > one (default) bridge > rsync two lvms from mounted NFS shares - on Dom0 > It was running fine, but suddenly the transfer slows down to a crawl > ................ > AND the system - Dom0 is almost non-responsive !!!!!! > > Any ideas or suggestions would be greatly appreciated. > > BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 > > Regards, > > frankWhat does top show on dom0? -- Digimer E-Mail: digimer@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Here it is: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 5832 root 18 0 99052 3484 212 S 41.0 0.0 149:09.80 dsm_sa_datamgrd 420 root 20 -5 0 0 0 R 35.1 0.0 244:22.21 kswapd0 6967 root 18 0 234m 15m 184 S 24.3 0.0 172:49.49 dsm_om_connsvcd 25359 root 19 0 114m 48m 648 R 20.1 0.1 353:52.54 rsync 14165 root 19 0 271m 10m 1164 R 18.2 0.0 111:47.19 gnome-terminal 27194 root 25 0 2069m 1.9g 604 R 18.2 5.3 155:52.42 rsync 21229 root 23 0 164m 4432 916 R 17.8 0.0 139:23.31 qemu-dm 6859 root 25 0 248m 5280 1076 R 17.7 0.0 13:39.37 wnck-applet 28896 root 23 0 245m 177m 660 R 17.3 0.5 267:39.14 rsync 9572 root 25 0 118m 17m 892 R 16.4 0.0 159:51.16 Xorg 14585 root 25 0 265m 3508 972 R 16.4 0.0 15:01.02 clock-applet 7896 root 19 0 354m 22m 568 S 16.2 0.1 219:07.70 xend 31002 root 20 0 268m 8188 1216 R 16.1 0.0 111:49.85 gnome-terminal 14611 root 24 0 534m 41m 1492 R 16.0 0.1 128:30.72 /usr/share/virt On Fri, Nov 12, 2010 at 3:45 PM, Digimer <linux@alteeve.com> wrote:> On 10-11-12 04:26 PM, fpt stl wrote: > > New Dell R510, 40GB ram, 2x quad procs > > Dom0 allocated 2GB > > Two test DomUs - insignificant use. > > one (default) bridge > > rsync two lvms from mounted NFS shares - on Dom0 > > It was running fine, but suddenly the transfer slows down to a crawl > > ................ > > AND the system - Dom0 is almost non-responsive !!!!!! > > > > Any ideas or suggestions would be greatly appreciated. > > > > BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 > > > > Regards, > > > > frank > > What does top show on dom0? > > -- > Digimer > E-Mail: digimer@alteeve.com > AN!Whitepapers: http://alteeve.com > Node Assassin: http://nodeassassin.org >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Friday 12 November 2010 22:26:05 fpt stl wrote:> New Dell R510, 40GB ram, 2x quad procs > Dom0 allocated 2GB > Two test DomUs - insignificant use. > one (default) bridge > rsync two lvms from mounted NFS shares - on Dom0 > It was running fine, but suddenly the transfer slows down to a crawl > ................ > AND the system - Dom0 is almost non-responsive !!!!!! > > Any ideas or suggestions would be greatly appreciated. > > BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 > > Regards, > > frankLet me guess: H200 RAID controller? _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
H700, if that helps. On Fri, Nov 12, 2010 at 4:34 PM, Bart Coninckx <bart.coninckx@telenet.be>wrote:> On Friday 12 November 2010 22:26:05 fpt stl wrote: > > New Dell R510, 40GB ram, 2x quad procs > > Dom0 allocated 2GB > > Two test DomUs - insignificant use. > > one (default) bridge > > rsync two lvms from mounted NFS shares - on Dom0 > > It was running fine, but suddenly the transfer slows down to a crawl > > ................ > > AND the system - Dom0 is almost non-responsive !!!!!! > > > > Any ideas or suggestions would be greatly appreciated. > > > > BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 > > > > Regards, > > > > frank > > > Let me guess: H200 RAID controller? >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Friday 12 November 2010 23:39:09 fpt stl wrote:> H700, if that helps. > > On Fri, Nov 12, 2010 at 4:34 PM, Bart Coninckx<bart.coninckx@telenet.be>wrote:> > On Friday 12 November 2010 22:26:05 fpt stl wrote: > > > New Dell R510, 40GB ram, 2x quad procs > > > Dom0 allocated 2GB > > > Two test DomUs - insignificant use. > > > one (default) bridge > > > rsync two lvms from mounted NFS shares - on Dom0 > > > It was running fine, but suddenly the transfer slows down to a crawl > > > ................ > > > AND the system - Dom0 is almost non-responsive !!!!!! > > > > > > Any ideas or suggestions would be greatly appreciated. > > > > > > BTW, Dom0 is CentOS 5.5 64bit, the disks are RAID1 10.000rpm, Xen 3.4.2 > > > > > > Regards, > > > > > > frank > > > > Let me guess: H200 RAID controller?In that case: no - I just had an issue with H200 controllers rendering Xen useless because they are terribly slow with RAID1. It seems one needs to enable disk caching policy after installing Dell''s Openmanage Server Administration since this settings is not available in the card''s BIOS. Even after that they are slower than a 4 year old Dell server with RAID1 on SATA I have. Things to examine are as mentionned, top and also (you never know) a test with bonnie++ of the used storage. B. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users