Dear Listeroons, I have been doing some testing with KVM and Virtuozzo(containers based virtualisation) and various storage devices and have some results I would like some help analyzing.
I have a nice big ZFS box from Oracle (Yes, evil but Solaris NFS is amazing). I have 10G and IB connecting these to my cluster My cluster is four HP servers (E5-2670 & 144GB ram) with a RAID10 of 600k SAS drives. Please open these pictures side by side. https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-12-04%20at%202.50.33%20PM.png https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-12-04%20at%203.18.03%20PM.png You will notice that using KVM/LVM on the local RAID10 completely destroys performance whereas the container based virtualisation stuff is awesome and as fast as the NFS. Why does LVM suck so hard compared to a single filesystem approach. What am I doing wrong? 4,8,12,16...VMs relates to the aggregate performance of the benchmark in that number of VMs. 4 = 1 VM on each node, 8 = 2 VM on each node. TPCC warehouses is the number of tpcc warehouses that the benchmark used. 1 warehouse is about 150MB so 10 warehouses would mean about 1.5GB of data being held in the innodb pool. Thanks, Andrew
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