:sig
DValue request_perf()

:params
return value : performance snapshot for the active request/workspace

:see
>sys
>time_precise

:content
Returns a DValue with timing and process metadata such as worker pid, parent pid, request count, request start times, native dispatch, workspace setup and birth, context application, guest execution, and hostcall timing. Hostcall totals include component resolution; MySQL, memcache, and component resolution also expose their own count and microsecond fields. `mysql_operations` is an ordered, query-text-free list of up to 64 logical MySQL operations and their microsecond durations; `mysql_operations_dropped` reports any overflow. The profiling hostcall itself is excluded from those totals so repeated snapshots remain comparable.

:example
DValue perf = request_perf();
print(perf.get_type_name() != "invalid" ? "captured a timing snapshot" : "no data", "\n");