These settings are available in system.settings and are autogenerated from source.
query_profiler_cpu_time_period_ns
Type
UInt64
Default
1000000000
Sets the period for a CPU clock timer of the query profiler. This timer counts only CPU time.
Possible values:
-
A positive integer number of nanoseconds.
Recommended values:
- 10000000 (100 times a second) nanoseconds and more for single queries.
- 1000000000 (once a second) for cluster-wide profiling.
-
0 for turning off the timer.
See also:
- System table trace_log
query_profiler_real_time_period_ns
Type
UInt64
Default
1000000000
Sets the period for a real clock timer of the query profiler. Real clock timer counts wall-clock time.
Possible values:
-
Positive integer number, in nanoseconds.
Recommended values:
- 10000000 (100 times a second) nanoseconds and less for single queries.
- 1000000000 (once a second) for cluster-wide profiling.
-
0 for turning off the timer.
See also:
- System table trace_log
Cloud default value: 3000000000.