wiki:db/DC2/CoarseChunkPerf
Last modified 6 years ago Last modified on 02/01/2013 02:25:09 PM

Coarse Chunks: Performance

Notes

For the high density FOV

  • 3044468 objects are read into memory
  • 5865220 objects read from disk

For the low density FOV

  • 76073 objects are read into memory
  • ? objects read from disk

For the average density FOV

  • 373763 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 4m52.873s
Low density Skinny 0m1.969s
Fat 0m9.818s
Avg. density Skinny 0m5.517s
Fat 0m39.668s
Load and index test High density Skinny 1m0.011s
Fat 5m27.291s
Low density Skinny 0m2.488s
Fat 0m10.513s
Avg. density Skinny 0m8.013s
Fat 0m42.883s
Load then index test High density Skinny 1m14.078s
Fat 13m56.050s
Low density Skinny 0m3.178s
Fat 0m25.482s
Avg. density Skinny 0m9.924s
Fat 1m7.057s