Hi
there,
I am looking for any
ideas as to why our cluster has a weird load issue. We are currently
running a 2 node GFS cluster with ES 4 and GFS 6.1.
Currently these
systems are running a light load as a mail cluster. We eventually plan to push
our heavily loaded systems onto 3 node clusters. However we are now concerend as
the system load seems to be higher than we expected it to
be.
I have noticed that
between the two nodes that load bounces between 0.5 and 1.8-2. It cycles between
the machines. ie one will be 0.5 and then the other would be 1.7 per say... then
a few min later the one that was not loaded is now loaded and the loaded one is
now idle.
Our worrying concern
is that the mail servers that we are going to move onto these hosts are
currently running a max of 0.5 however they process a lot more of mail than the
current GFS cluster.
The other day we did
a patch update to see if any new patches corrected these issues. However they
are still there.
The top deamons in
use are gfs_scand, gfs_inoded and dlm_recvd However they take about
7% of the CPU time which does not explain the high load on the server. As I
speak the once node has spiked to 2.98.
Any
ideas?
Robert Moody
Snr. Sun Solaris/Linux
Engineer
WPF : Communications
Officer
MWeb
Tel : 021 596 8753
Cell : 084 466 8521
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