Revision 673f0f00 Ganeti/HTools/Cluster.hs

b/Ganeti/HTools/Cluster.hs
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                  , "n1_score"
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                  , "reserved_mem_cv"
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                  , "offline_all_cnt"
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                  , "offline_pri_cnt"
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                  , "vcpu_ratio_cv"
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                  , "cpu_load_cv"
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                  , "mem_load_cv"
......
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        offline_isec = sum . map (length . Node.sList) $ offline
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        -- metric: count of instances on offline nodes
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        off_score = fromIntegral (offline_ipri + offline_isec)::Double
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        -- metric: count of primary instances on offline nodes (this
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        -- helps with evacuation/failover of primary instances on
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        -- 2-node clusters with one node offline)
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        off_pri_score = fromIntegral offline_ipri::Double
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        cpu_l = map Node.pCpu nodes
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        -- metric: covariance of vcpu/pcpu ratio
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        cpu_cv = varianceCoeff cpu_l
......
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        -- metric: conflicting instance count
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        pri_tags_inst = sum $ map Node.conflictingPrimaries nodes
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        pri_tags_score = fromIntegral pri_tags_inst::Double
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    in [ mem_cv, dsk_cv, n1_score, res_cv, off_score, cpu_cv
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    in [ mem_cv, dsk_cv, n1_score, res_cv, off_score, off_pri_score, cpu_cv
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       , varianceCoeff c_load, varianceCoeff m_load
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       , varianceCoeff d_load, varianceCoeff n_load
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       , pri_tags_score ]

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