void UncoreCounterState::readAndAggregate(MsrHandle * msr)
{
    TemporalThreadAffinity tempThreadAffinity(msr->getCoreId()); // speedup trick for Linux

    PCM * m = PCM::getInstance();
    uint32 cpu_model = m->getCPUModel();
    switch (cpu_model)
    {
    case PCM::WESTMERE_EP:
    case PCM::NEHALEM_EP:
    {
        uint64 cUncMCFullWrites = 0;
        uint64 cUncMCNormalReads = 0;
        msr->read(MSR_UNCORE_PMC0, &cUncMCFullWrites);
        msr->read(MSR_UNCORE_PMC1, &cUncMCNormalReads);
        UncMCFullWrites += m->extractUncoreGenCounterValue(cUncMCFullWrites);
        UncMCNormalReads += m->extractUncoreGenCounterValue(cUncMCNormalReads);
    }
    break;
    case PCM::NEHALEM_EX:
    case PCM::WESTMERE_EX:
    {
        uint64 cUncMCNormalReads = 0;
        msr->read(MB0_MSR_PMU_CNT_0, &cUncMCNormalReads);
        UncMCNormalReads += m->extractUncoreGenCounterValue(cUncMCNormalReads);
        msr->read(MB1_MSR_PMU_CNT_0, &cUncMCNormalReads);
        UncMCNormalReads += m->extractUncoreGenCounterValue(cUncMCNormalReads);

        uint64 cUncMCFullWrites = 0;                         // really good approximation of
        msr->read(BB0_MSR_PERF_CNT_1, &cUncMCFullWrites);
        UncMCFullWrites += m->extractUncoreGenCounterValue(cUncMCFullWrites);
        msr->read(BB1_MSR_PERF_CNT_1, &cUncMCFullWrites);
        UncMCFullWrites += m->extractUncoreGenCounterValue(cUncMCFullWrites);
    }
    break;
    case PCM::JAKETOWN:
    case PCM::SANDY_BRIDGE:
    case PCM::IVY_BRIDGE:
    {
    }
    break;
    default:;
    }

                uint64 cC2Residency = 0;
    uint64 cC3Residency = 0;
    uint64 cC6Residency = 0;
    uint64 cC7Residency = 0;

    msr->read(MSR_PKG_C3_RESIDENCY, &cC3Residency);
    msr->read(MSR_PKG_C6_RESIDENCY, &cC6Residency);

    if(m->extendedCStateMetricsAvailable())
    {
        msr->read(MSR_PKG_C2_RESIDENCY, &cC2Residency);
        msr->read(MSR_PKG_C7_RESIDENCY, &cC7Residency);
    }

    C2Residency += cC2Residency;
    C3Residency += cC3Residency;
    C6Residency += cC6Residency;
    C7Residency += cC7Residency;
}