After starting from command line bitocoind, it can require minutes to have bitocoind to be real responsive, for example:
`$ ./bitcoin-cli stop`
`error: {"code":-28,"message":"Activating best chain..."}`

In such situation, I had sometimes to "kill -9" bitcoind to stop it.
I would like to be able to stop bitcoind in clean way.

p.s.:
`$ uname -a`
`Darwin isghe.local 14.4.0 Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64 x86_64`

if (i == NULL) return; 
    }
    
    double p = boost::math::pdf(poisson, nBlocks);
    LogPrint("partitioncheck", "%s: Found %d blocks in the last %d hours\n", __func__, nBlocks, SPAN_HOURS);
    LogPrint("partitioncheck", "%s: likelihood: %g\n", __func__, p);
    
    const int FIFTY_YEARS = 50*365*24*60*60;
    double alertThreshold = 1.0 / (FIFTY_YEARS / SPAN_SECONDS);
    if (p <= alertThreshold && nBlocks < BLOCKS_EXPECTED)
    {
        
        strWarning = strprintf(_("WARNING: check your network connection, %d blocks received in the last %d hours (%d expected)"),
                               nBlocks, SPAN_HOURS, BLOCKS_EXPECTED);
    }
    else if (p <= alertThreshold && nBlocks > BLOCKS_EXPECTED)
    {
        
        strWarning = strprintf(_("WARNING: abnormally high number of blocks generated, %d blocks received in the last %d hours (%d expected)"),
                               nBlocks, SPAN_HOURS, BLOCKS_EXPECTED);
    }
    if (!strWarning.empty())
    {
        strMiscWarning = strWarning;
        AlertNotify(strWarning, true);
        lastAlertTime = now;
    }
}
static VersionBitsCache versionbitscache;
int32_t ComputeBlockVersion(const CBlockIndex* pindexPrev, const Consensus::Params& params)