wiki:db/DC2/FineChunkPerf

Version 3 (modified by smm, 13 years ago) (diff)

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Fine Chunks: Performance

Notes

For the high density FOV

  • 3596852 objects are read into memory
  • 3596852 objects read from disk

For the low density FOV

  • 105847 objects are read into memory
  • 105847 objects read from disk

For the average density FOV

  • 446289 objects are read into memory
  • 446289 objects read from disk

Below, elapsed times for multiple runs of every test performed are listed. Detailed iostat traces for the first of these runs are available by clicking on the links.

Test FOV Row Size Time - 1st run Time - 2nd run Time - 3d run
Load test High density Skinny
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat
Load and index test High density Skinny
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat
Load then index test High density Skinny
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat