ABCDEFGHIJKLMNOPQRSTUVWXYZAAAB
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DescriptionHot Perf ImprovementCold Perf ImprovementColumn HotColumn WarmColumn ColdNoColumn HotNoColumn WarmNoColumn ColdSBE HotRaw Query
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Group 1 column61.67%2565.40%96011311182155210091315058193db.products.aggregate([{$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{'$natural':1}})
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Group 1 column + $exists146.66%3973.61%733867879180810362358078650db.products.aggregate([{$match:{'type': {$exists:true}}}, {$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{'$natural':1}})
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Non-matching query on scalar244.40%7160.71%2774014259549196308581060db.products.aggregate([{$match:{'type': 'asdf'}}, {$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{'$natural':1}})
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Non-matching query on array598.26%34424022914db.products.aggregate([{$match:{'categoryPath.name': 'asdf'}}, {$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{'$natural':1}})
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Matching query 2 columns (117 matches)519.95%39624553043
db.products.aggregate([{$match:{'categoryPath.name': 'Pop', type:'Movie'}}, {$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{$natural:1}})
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Matching query 2 columns (268k matches)367.43%5652641111604240
db.products.aggregate([{$match:{'categoryPath.name': 'Pop', type:'Music'}}, {$group:{_id:'$type', count: {$sum:1}}}], {noColumns:false, hint:{$natural:1}})
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All times are milliseconds
All tests were run against bestbuy data set
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Hot = in WT cache
1,901,574 documents
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Warm = in file system cache
2.2GB snappy compressed
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Cold = not in any cache
8GB uncompressed
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200% improvement is 3x speed or 1/3 time
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