wiki:db/DC2/FineChunkPerf

Version 1 (modified by smm, 13 years ago) (diff)

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Fine Chunks: Performance

Notes

For the high density FOV

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

For the low density FOV

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

For the average density FOV

  • ? objects are read into memory
  • ? 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 0m36.023s
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat
Load and index test High density Skinny 1m0.011s
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat
Load then index test High density Skinny 1m14.078s
Fat
Low density Skinny
Fat
Avg. density Skinny
Fat