On 01/05/2012 12:07 PM, Dax Kelson wrote: > Looking in older Red Hat Magazine article by Matthew O'Keefe such as: > > http://www.redhat.com/magazine/008jun05/features/gfs/ > http://www.redhat.com/magazine/008jun05/features/gfs_nfs/ > > There are references to large GFS clusters. > > "For example, if 128 GFS server nodes require..." and "scalability 300+ > or more" > > Why is it on RHEL6 only a max of 16 nodes is supported? > > Thanks, > Dax Kelson > Guru Labs Speaking as an independent; I often see people with latency issues when they try to grow past 16 nodes when using corosync, which is the HA cluster communication layer in RHEL 6. More specifically, DLM (the distributed lock manager) can start to suffer from a performance perspective as the size of the cluster grows. You may be able to go higher, but be prepared to do a lot of network tweaking. Also, as Steven and Adam pointed out, >16 is outside the supported size so you will have trouble getting any official support. If you want to try anyway, the freenode IRC channel #linux-cluster is a good place to ask about specific problems you run into. -- Digimer E-Mail: digimer@xxxxxxxxxxx Freenode handle: digimer Papers and Projects: http://alteeve.com Node Assassin: http://nodeassassin.org "omg my singularity battery is dead again. stupid hawking radiation." - epitron -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
