gistfile1.txt

    function computeRemainingTime(ratio_updated) {
        var averageBlockTime = 12;
        var blockGasIncrease = (20-3)/2; // Gross average of gas increase
        var requiredGasLimit = 21000;
        var currentGasLimit = eth.getBlock("latest").gasLimit;
        var GasLimitDelta = requiredGasLimit - currentGasLimit;
        var increasingBlockRatio = (ratio_updated - (1 - ratio_updated));
        var necessaryBlocks = (GasLimitDelta / increasingBlockRatio) / blockGasIncrease;
        var necessaryTime = necessaryBlocks * averageBlockTime;

        console.log("ETA for first TX: " + Math.round(necessaryTime / 3600) + "h" + Math.round((necessaryTime % 3600) / 60) + "m");
    }

    function getUpdatedMinerRatio(){
        var latestBlock = eth.getBlock("latest");
        var n = latestBlock.number;
        var gasLimit = [];
        
        for (i = n-150; i<n; i++){
            var l = eth.getBlock(i).gasLimit;
            gasLimit.push(l);
        }
        var updatedCount = 0;
        var notUpdatedCount = 0;
        gasLimit.forEach(function(e, i){
            if(i >= 1) {
                if(e > gasLimit[i-1]) {
                    updatedCount++;
                }
                else {
                    notUpdatedCount++;
                }
                
            }
            
        });
        var ratio_updated = updatedCount / (updatedCount + notUpdatedCount);
        console.log("Current Block Number: " + n + "\nMiners updated to 1.0.1+ : " + Math.round(ratio_updated * 10000)/100 + "%" );
        console.log("Current gas limit: " + latestBlock.gasLimit);
        if(ratio_updated < 0.5) {
            console.log("Not enough switched miners yet for first tx ETA.")
        }
        else {
            computeRemainingTime(ratio_updated);
        }

        var updated_ratios = [ 55, 60, 65, 70, 75, 80, 85, 90, 95, 100 ];
        updated_ratios.forEach(function(e) {
            console.log("For info: if " + e + "% are updated");
            computeRemainingTime(e/100);
        });

    }


    getUpdatedMinerRatio();