db.currentOp().inprog.filter(function(op){return op.msg === "waiting for write concern"}).map(function(op){op.ms = op.microsecs_running ? op.microsecs_running/1000 : 0; return op;}).filter(function(op){ return op.ms > 50}).map(function(op){return {ms : op.ms, col : op.ns}}).reduce(function(e, c){if(e[c.col]){e[c.col].push(c.ms)}else{e[c.col]=[c.ms]} return e}, {})
{
	"talk-visitor.$cmd" : [
		63.167,
		53.842,
		58.851,
		83.493,
		84.996,
		56.482,
		73.045,
		72.069,
		61.626,
		52.806,
		94.394,
		69.88
	],
	"talk-bprocess.$cmd" : [
		55.879,
		83.506,
		84.399,
		71.866,
		94.442,
		72.401,
		96.183,
		85.898,
		85.221,
		93.1,
		73.524,
		53.025,
		64.207,
		67.257,
		74.376,
		75.892,
		74.373,
		76.926,
		58.193,
		97.267,
		98.968,
		58.552,
		64.406,
		50.717,
		78.873,
		86.672,
		76.467,
		55.732,
		54.724,
		88.214,
		63.564,
		83.126,
		96.293,
		82.08,
		94.8,
		77.737,
		97.811,
		97.347,
		66.507,
		66.666,
		98.903,
		77.283,
		76.561,
		84.656,
		52.504,
		78.816,
		65.262,
		82.005,
		64.24,
		75.829,
		88.85
	],
	"talk-vsession.$cmd" : [
		68.412
	]
}