gistfile1.txt

(pyarrow-nightly-3.7) todd@va1022:/data/1/todd/kudu$ perf record -a python test.py arrow
Couldn't synthesize bpf events.
Read 200,000,000 rows in 2.6614990234375s (75,145,622 rows/sec, 150,291,244 cells/sec, 859MB/sec)
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.980 MB perf.data (21404 samples) ]
(pyarrow-nightly-3.7) todd@va1022:/data/1/todd/kudu$ perf report --percent-limit 1 --stdio --sort=sym | c++filt
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 21K of event 'cycles:ppp'
# Event count (approx.): 10157083305
#
# Overhead  Symbol                                                                                                                                                                                                                                                                                                                                                                                                            
# ........  ..................................................................................................................................................................................................................................................................................................................................................................................................................
#
    12.76%  [k] copy_user_enhanced_fast_string
     9.98%  [.] __memcpy_ssse3_back
     9.18%  [k] intel_idle
     5.16%  [.] kudu::tserver::ScanResultCopier::HandleRowBlock(kudu::tserver::Scanner*, kudu::RowBlock const&)
     2.04%  [.] kudu::SerializeRowBlockColumnar(kudu::RowBlock const&, kudu::Schema const*, kudu::ColumnarSerializedBatch*)
     1.12%  [.] _PyEval_EvalFrameDefault
     1.11%  [k] _raw_spin_lock
     1.08%  [k] poll_idle