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p = db.getCollection("padding");
p.drop();
for (var i = 0; i < 1000; i++) {
p.insert({ x: 1, y: "aaaaaaaaaaaaaaa" });
}
assert.eq(p.stats().paddingFactor, 1, "Padding Not 1");
for (var i = 0; i < 1000; i++) {
var x = p.findOne();
x.y = x.y + "aaaaaaaaaaaaaaaa";
p.update({}, x);
if (i % 100 == 0)
print(p.stats().paddingFactor);
}
assert.gt(p.stats().paddingFactor, 1.9, "Padding not > 1.9");
// this should make it go down
for (var i = 0; i < 1000; i++) {
p.update({}, { $inc: { x: 1} });
if (i % 100 == 0)
print(p.stats().paddingFactor);
}
assert.lt(p.stats().paddingFactor, 1.7, "Padding not < 1.7");
for (var i = 0; i < 1000; i++) {
if (i % 2 == 0) {
p.update({}, { $inc: { x: 1} });
}
else {
var x = p.findOne();
x.y = x.y + "aaaaaaaaaaaaaaaa";
p.update({}, x);
}
if( i % 100 == 0 )
print(p.stats().paddingFactor);
}
var ps = p.stats().paddingFactor;
assert.gt(ps, 1.7, "Padding not greater than 1.7");
assert.lt(ps, 1.9, "Padding not less than 1.9");
// 50/50 inserts and nonfitting updates
for (var i = 0; i < 1000; i++) {
if (i % 2 == 0) {
p.insert({});
}
else {
var x = p.findOne();
x.y = x.y + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
p.update({}, x);
}
if (i % 100 == 0)
print(p.stats().paddingFactor);
}
// should have trended somewhat higher over the above.
// speed of increase would be higher with more indexes.
assert.gt(p.stats().paddingFactor, ps + 0.02 , "padding factor not greater than value (+.02)");
p.drop();
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