Word index prototype » History » Version 5
Greg Burri, 09/10/2009 10:56 AM
| 1 | 1 | Greg Burri | h1. Word index prototype |
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| 3 | 2 | Greg Burri | see here : [[Algorithms#Word-indexing]] |
| 4 | 3 | Greg Burri | |
| 5 | h2. Measure |
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| 6 | |||
| 7 | 5 | Greg Burri | Each file and folder is split in words and indexed by these words. |
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| 9 | 3 | Greg Burri | h3. Case 1 |
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| 11 | * 8'531 files/folders (some mp3) |
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| 12 | * Time to index : ~1s (8'000 item/s) |
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| 13 | * Average size per indexed item : 464 bytes. |
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| 14 | * Total size in memory : ~3.7 MB |
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| 15 | * Speed to do a search : < 1 ms |
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| 16 | |||
| 17 | h3. Case 2 |
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| 18 | 1 | Greg Burri | |
| 19 | 5 | Greg Burri | * 309'269 files/folders (various files) |
| 20 | 3 | Greg Burri | * Time to index : ~30s (10'000 item/s) |
| 21 | * Average size per indexed item : 140 bytes. (The filenames from case 1 are surely longer and thus own more words). |
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| 22 | * Total size in memory : ~42 MB |
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| 23 | * Speed to do a search : < 1 ms |
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| 24 | |||
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| 26 | h2. Conclusion |
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| 28 | 4 | Greg Burri | This algorithm is very time effective for searching or indexing but takes a lot of memory. For the moment it will be used unchanged but some space optimization may be done for the future. |