[Java] Benchmark results for ARROW-1807 #20590
Description
This is to record numbers for a test that has been done internally to compact ArrowBuf heap foot print by moving variables (udle, refcnt, isempty) to buffer ledger. It also removes the debug fields in ledger (buffers, historical log) to a different class.
Running a test that does 20000 allocations of arrow bufs and with ravindra's ongoing fix that does the slicing of arrow bufs, below are the results (without/with above fix)
Without above fix :
Total Bytes: 13,028,109
Total Classes: 2,367
Total Instances: 193,471
Classloaders: 77
GC Roots: 1,641
Number of Objects Pending for Finalization: 0
With above fix :
Total Bytes: 12,700,115
Total Classes: 2,373
Total Instances: 193,635
Classloaders: 82
GC Roots: 1,642
Number of Objects Pending for Finalization: 0
ArrowBuf size decreased from 109 bytes to 88 bytes and BufferLedger size increased from 80 bytes to 89 bytes.
Reporter: shyam narayan singh / @shyambits2004
Assignee: shyam narayan singh / @shyambits2004
Related issues:
Note: This issue was originally created as ARROW-3987. Please see the migration documentation for further details.