1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
p = db.getCollection("padding");
p.drop();
// this test requires usePowerOf2Sizes to be off
db.createCollection( p.getName(), { "usePowerOf2Sizes" : false } );
assert.eq(0, p.stats().userFlags);
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();
|