Hi folks, I've been looking at various articles on the TRACING ON output of cassandra. I'm not finding a definitive description of what the output means.
https://docs.datastax.com/en/dse/6.7/cql/cql/cql_reference/cqlsh_commands/cqlshTracing.html says "Note: The source_elapsed column value is the elapsed time of the event on the source node in microseconds." Am I correct in the understanding that the current row's source_elapsed value minus the source_elapsed value of the previous row for the same source node should tell me how long the current row took to execute? As an example: activity | timestamp | source | source_elapsed | client ... Bloom filter allows skipping sstable 396 [ReadStage-3] | 2020-10-08 10:31:48.631001 | 10.220.50.148 | 402 | 10.220.50.148 Partition index with 0 entries found for sstable 382 [ReadStage-3] | 2020-10-08 10:31:48.636000 | 10.220.50.148 | 5819 | 10.220.50.148 Bloom filter allows skipping sstable 380 [ReadStage-3] | 2020-10-08 10:31:48.645000 | 10.220.50.148 | 14685 | 10.220.50.148 Bloom filter allows skipping sstable 14 [ReadStage-3] | 2020-10-08 10:31:48.645000 | 10.220.50.148 | 14714 | 10.220.50.148 Partition index with 0 entries found for sstable 6 [ReadStage-3] | 2020-10-08 10:31:48.666000 | 10.220.50.148 | 35410 | 10.220.50.148 ... Does the above indicate it took 20.696 milliseconds to run the last "Partition index with 0 entries found for sstable 6" activity? Jim
