01-02-2013
How to troubleshoot a 1000 nodes Apache cluster?
Hi all.
May I get some expert advice on troubleshooting performance issues of a 1000 nodes Apache LB cluster. Users report slow loading/response of webpages. Different websites are hosted on this cluster for different clients. But all are reporting the same issue.
Could you please let me know what all basic aspects you would take into consideration for this sort of issue.
FYI. I do not have access to the load-balancers.
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LEARN ABOUT DEBIAN
clmresidue
clm residue(1) USER COMMANDS clm residue(1)
NAME
clm residue - extend clustering of subgraph to clustering of graph.
clmresidue is not in actual fact a program. This manual page documents the behaviour and options of the clm program when invoked in mode
residue. The options -h, --apropos, --version, -set, --nop are accessible in all clm modes. They are described in the clm manual page.
SYNOPSIS
clm residue -icl fname (input clustering) -imx fname (input graph) [-rpm fname (residue projection matrix)] [-o fname (output clustering
file)]
DESCRIPTION
The cluster file presumably contains a clustering of a subgraph of the graph G contained by the matrix file, implying that the row domain of
that clustering is a subset of the node domain of the graph. clm residue will compute a simple upwards projection of that clustering,
resulting in a clustering of G.
OPTIONS
-imx fname (input graph)
-icl fname (input clustering)
-rpm fname (residue projection matrix)
The name for the file in which the residue projection matrix is stored. It contains for each node and for each cluster in the input clus-
tering the combined weight of the (edges to the) neighbours of that node in that cluster. The default output file name is out.rpm.
-o fname (output clustering file)
The name for the file in which the majority vote projection clustering is stored. Aka the majority vote projection clustering storage file
name.
This embodies a very crude approach to distributing the missing nodes in the input clustering onto that same cluster. For each node, the
cluster is taken for which the residue projection is the largest (see above). The residue (i.e. the set of missing nodes) is initially
viewed as a cluster; the set of nodes for which the projection is largest for the residue itself will form a new cluster, if it is not
empty.
By default output is sent to STDOUT.
AUTHOR
Stijn van Dongen.
SEE ALSO
mclfamily(7) for an overview of all the documentation and the utilities in the mcl family.
clm residue 12-068 8 Mar 2012 clm residue(1)