I made the 100,000,000 test and found this ;-)


worker 1: Executed 99720000 writes in 746ms { rss: 54153216, heapTotal: 45030848, heapUsed: 18446536 }
worker 3: Executed 99980000 writes in 612ms { rss: 53854208, heapTotal: 44721984, heapUsed: 22851648 }
worker 2: Executed 97190000 writes in 672ms { rss: 54603776, heapTotal: 45006464, heapUsed: 14507968 }
worker 3: Executed 99985000 writes in 608ms { rss: 53633024, heapTotal: 44478144, heapUsed: 12673360 }
worker 1: Executed 99725000 writes in 687ms { rss: 54153216, heapTotal: 45030848, heapUsed: 9664464 }
worker 4: Executed 95670000 writes in 749ms { rss: 26583040, heapTotal: 23876864, heapUsed: 10630328 }
worker 2: Executed 97195000 writes in 673ms { rss: 54603776, heapTotal: 45006464, heapUsed: 17716544 }
worker 3: Executed 99990000 writes in 598ms { rss: 53538816, heapTotal: 44478144, heapUsed: 12401584 }
worker 1: Executed 99730000 writes in 670ms { rss: 54181888, heapTotal: 45063616, heapUsed: 14609336 }
worker 4: Executed 95675000 writes in 712ms { rss: 33505280, heapTotal: 24632768, heapUsed: 12654544 }
worker 2: Executed 97200000 writes in 666ms { rss: 54624256, heapTotal: 45026944, heapUsed: 8354032 }
worker 3: Executed 99995000 writes in 598ms { rss: 53592064, heapTotal: 44498624, heapUsed: 16514176 }
worker 1: Executed 99735000 writes in 681ms { rss: 54153216, heapTotal: 45030848, heapUsed: 5826376 }
worker 4: Executed 95680000 writes in 746ms { rss: 50016256, heapTotal: 40901824, heapUsed: 6960304 }
worker 2: Executed 97205000 writes in 680ms { rss: 54624256, heapTotal: 45026944, heapUsed: 20846544 }

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
RangeError: Invalid array length
    at [object Object]._zeros (/home/voltdb/voltdb-client-nodejs/lib/connection.js:132:15)
    at [object Object]._getUID (/home/voltdb/voltdb-client-nodejs/lib/connection.js:127:20)
    at [object Object].call (/home/voltdb/voltdb-client-nodejs/lib/connection.js:112:20)
    at EventEmitter.<anonymous> (/home/voltdb/voltdb-client-nodejs/lib/client.js:84:18)
    at EventEmitter.call (native)
    at Array.<anonymous> (/home/voltdb/voltdb-client-nodejs/writes-forked.js:196:20)
    at EventEmitter._tickCallback (node.js:192:40)
master  : worker (pid 5084) exits.
worker 1: Executed 99740000 writes in 689ms { rss: 54153216, heapTotal: 45030848, heapUsed: 19180544 }
worker 4: Executed 95685000 writes in 776ms { rss: 52813824, heapTotal: 43933568, heapUsed: 19667528 }
worker 2: Executed 97210000 writes in 703ms { rss: 54603776, heapTotal: 45006464, heapUsed: 22199392 }
worker 1: Executed 99745000 writes in 700ms { rss: 54153216, heapTotal: 45030848, heapUsed: 20757648 }
worker 4: Executed 95690000 writes in 760ms { rss: 52695040, heapTotal: 43689728, heapUsed: 20613744 }
worker 2: Executed 97215000 writes in 683ms { rss: 54603776, heapTotal: 45006464, heapUsed: 16999160 }
worker 1: Executed 99750000 writes in 725ms { rss: 54153216, heapTotal: 45030848, heapUsed: 11639712 }
worker 2: Executed 97220000 writes in 709ms { rss: 54603776, heapTotal: 45006464, heapUsed: 18180696 }

...

worker 1: Executed 99985000 writes in 741ms { rss: 54169600, heapTotal: 45051328, heapUsed: 21188160 }
worker 4: Executed 95905000 writes in 766ms { rss: 52338688, heapTotal: 43214400, heapUsed: 10249056 }
worker 2: Executed 97460000 writes in 693ms { rss: 54603776, heapTotal: 45006464, heapUsed: 6379896 }
worker 1: Executed 99990000 writes in 733ms { rss: 54153216, heapTotal: 45030848, heapUsed: 11949400 }
worker 4: Executed 95910000 writes in 759ms { rss: 52240384, heapTotal: 43193920, heapUsed: 14117736 }
worker 2: Executed 97465000 writes in 672ms { rss: 54603776, heapTotal: 45006464, heapUsed: 19140872 }
worker 1: Executed 99995000 writes in 676ms { rss: 54153216, heapTotal: 45030848, heapUsed: 25320408 }
worker 4: Executed 95915000 writes in 786ms { rss: 52285440, heapTotal: 43193920, heapUsed: 19193000 }
worker 2: Executed 97470000 writes in 673ms { rss: 54603776, heapTotal: 45006464, heapUsed: 20168448 }

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
RangeError: Invalid array length
    at [object Object]._zeros (/home/voltdb/voltdb-client-nodejs/lib/connection.js:132:15)
    at [object Object]._getUID (/home/voltdb/voltdb-client-nodejs/lib/connection.js:127:20)
    at [object Object].call (/home/voltdb/voltdb-client-nodejs/lib/connection.js:112:20)
    at EventEmitter.<anonymous> (/home/voltdb/voltdb-client-nodejs/lib/client.js:84:18)
    at EventEmitter.call (native)
    at Array.0 (/home/voltdb/voltdb-client-nodejs/writes-forked.js:196:20)
    at EventEmitter._tickCallback (node.js:192:40)
master  : worker (pid 5081) exits.
worker 2: Executed 97475000 writes in 686ms { rss: 54603776, heapTotal: 45006464, heapUsed: 10941536 }
worker 4: Executed 95920000 writes in 788ms { rss: 52080640, heapTotal: 42950080, heapUsed: 9558512 }
worker 2: Executed 97480000 writes in 687ms { rss: 54603776, heapTotal: 45006464, heapUsed: 15248312 }
worker 4: Executed 95925000 writes in 746ms { rss: 52985856, heapTotal: 43941696, heapUsed: 21965680 }
worker 2: Executed 97485000 writes in 688ms { rss: 54603776, heapTotal: 45006464, heapUsed: 6219736 }
worker 4: Executed 95930000 writes in 755ms { rss: 52822016, heapTotal: 43697856, heapUsed: 12086856 }
worker 2: Executed 97490000 writes in 685ms { rss: 54603776, heapTotal: 45006464, heapUsed: 19370792 }
worker 4: Executed 95935000 writes in 729ms { rss: 52731904, heapTotal: 43697856, heapUsed: 12648424 }

...

worker 2: Executed 99975000 writes in 709ms { rss: 53850112, heapTotal: 44258688, heapUsed: 11696104 }
worker 2: Executed 99980000 writes in 679ms { rss: 53850112, heapTotal: 44258688, heapUsed: 15952352 }
worker 4: Executed 98225000 writes in 753ms { rss: 33320960, heapTotal: 24376576, heapUsed: 11852152 }
worker 2: Executed 99985000 writes in 688ms { rss: 53850112, heapTotal: 44258688, heapUsed: 7059072 }
worker 4: Executed 98230000 writes in 770ms { rss: 34988032, heapTotal: 41413888, heapUsed: 14351504 }
worker 2: Executed 99990000 writes in 687ms { rss: 53850112, heapTotal: 44258688, heapUsed: 20287656 }
worker 4: Executed 98235000 writes in 788ms { rss: 52973568, heapTotal: 43974208, heapUsed: 4936536 }
worker 2: Executed 99995000 writes in 657ms { rss: 53850112, heapTotal: 44258688, heapUsed: 21870504 }
worker 4: Executed 98240000 writes in 725ms { rss: 53067776, heapTotal: 43974208, heapUsed: 17761080 }

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
RangeError: Invalid array length
    at [object Object]._zeros (/home/voltdb/voltdb-client-nodejs/lib/connection.js:132:15)
    at [object Object]._getUID (/home/voltdb/voltdb-client-nodejs/lib/connection.js:127:20)
    at [object Object].call (/home/voltdb/voltdb-client-nodejs/lib/connection.js:112:20)
    at EventEmitter.<anonymous> (/home/voltdb/voltdb-client-nodejs/lib/client.js:84:18)
    at EventEmitter.call (native)
    at Array.0 (/home/voltdb/voltdb-client-nodejs/writes-forked.js:196:20)
    at EventEmitter._tickCallback (node.js:192:40)
master  : worker (pid 5083) exits.
worker 4: Executed 98245000 writes in 735ms { rss: 53071872, heapTotal: 43974208, heapUsed: 18656056 }
worker 4: Executed 98250000 writes in 709ms { rss: 53071872, heapTotal: 43974208, heapUsed: 13525912 }
worker 4: Executed 98255000 writes in 702ms { rss: 53071872, heapTotal: 43974208, heapUsed: 14855720 }
worker 4: Executed 98260000 writes in 703ms { rss: 53071872, heapTotal: 43974208, heapUsed: 18837136 }
worker 4: Executed 98265000 writes in 700ms { rss: 53071872, heapTotal: 43974208, heapUsed: 11022944 }
worker 4: Executed 98270000 writes in 715ms { rss: 53071872, heapTotal: 43974208, heapUsed: 15022200 }
worker 4: Executed 98275000 writes in 717ms { rss: 53071872, heapTotal: 43974208, heapUsed: 5700416 }

...

worker 4: Executed 99960000 writes in 689ms { rss: 53342208, heapTotal: 44201792, heapUsed: 16800304 }
worker 4: Executed 99965000 writes in 681ms { rss: 53342208, heapTotal: 44201792, heapUsed: 18255416 }
worker 4: Executed 99970000 writes in 695ms { rss: 53342208, heapTotal: 44201792, heapUsed: 9141456 }
worker 4: Executed 99975000 writes in 692ms { rss: 53342208, heapTotal: 44201792, heapUsed: 13240648 }
worker 4: Executed 99980000 writes in 686ms { rss: 53342208, heapTotal: 44201792, heapUsed: 26302576 }
worker 4: Executed 99985000 writes in 719ms { rss: 53342208, heapTotal: 44201792, heapUsed: 17158704 }
worker 4: Executed 99990000 writes in 713ms { rss: 53342208, heapTotal: 44201792, heapUsed: 18438736 }
worker 4: Executed 99995000 writes in 721ms { rss: 53342208, heapTotal: 44201792, heapUsed: 9332080 }

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
RangeError: Invalid array length
    at [object Object]._zeros (/home/voltdb/voltdb-client-nodejs/lib/connection.js:132:15)
    at [object Object]._getUID (/home/voltdb/voltdb-client-nodejs/lib/connection.js:127:20)
    at [object Object].call (/home/voltdb/voltdb-client-nodejs/lib/connection.js:112:20)
    at EventEmitter.<anonymous> (/home/voltdb/voltdb-client-nodejs/lib/client.js:84:18)
    at EventEmitter.call (native)
    at Array.<anonymous> (/home/voltdb/voltdb-client-nodejs/writes-forked.js:196:20)
    at EventEmitter._tickCallback (node.js:192:40)
master  : worker (pid 5085) exits.
master  : Total: 0 TPS
voltdb@ip-10-68-15-201:~/voltdb-client-nodejs$