Simple test harness for mongo

mongoload.js

db.foo.drop();
db.foo.insert( { _id : 1 } )

ops = [{ op : "findOne" , ns : "test.foo" , query : { _id : 1 } }]

for ( x = 1; x<=128; x*=2){
    res = benchRun( { parallel: x, seconds: 5, ops: ops } )
    print( "threads: " + x + "\t queries/sec: " + res.query )
}