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Sample Data are stored in a relational database.
A perl script is run to retrieve events located in a region defined by ra_max, dec_max, ra_min,dec_min. (typically 32x32 degrees).
The time spent by the query as well as the number of events found are kept.
The query is launched 100 times, statistics are output.
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On the X axis is the dimension : a value of 16 defines a square of 32x32 degrees.
The Y axis indicates the time in milliseconds.
The crosshairs show the number of events found divided by 10.Radius | events | oracle | mysql | postgresql |
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1 | 135 | 90 | 4 | 30 | 2 | 360 | 110 | 9 | 40 | 8 | 4300 | 280 | 100 | 260 | 16 | 15000 | 900 | 380 | 2200 |
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| Column |
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On the X axis is the dimension : a value of 16 defines a square of 32x32 degrees.
The Y axis indicates the time in milliseconds.
The crosshairs show the number of events found divided by 10.
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Details are available on this page.
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