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x/tool/profile

Performance profiling and smart garbage collection.

alloc-count

Return the number of heap objects allocated.

Returns: INT — Total heap allocations since last reset

eval-count

Return the number of eval invocations.

Returns: INT — Total eval calls since last reset

tco-count

Return the number of tail-call optimizations performed.

Returns: INT — Total tail-call optimizations since last reset

assoc-calls-count

Return the number of association list lookup operations.

Returns: INT — Total alist lookup calls

assoc-steps-count

Return the total steps walked during alist lookups.

Returns: INT — Total alist walk steps

sym-find-calls-count

Return the number of symbol lookup operations.

Returns: INT — Total symbol-find calls

sym-find-steps-count

Return the total steps walked during symbol lookups.

Returns: INT — Total symbol-find steps

gc-runs-count

Return the number of garbage collection runs.

Returns: INT — Total GC mark/sweep cycles

bst-hits-count

Return the number of successful BST (binary search tree) lookups.

Returns: INT — BST cache hits

bst-misses-count

Return the number of BST lookups that fell through to alist walk.

Returns: INT — BST cache misses

profile-reset

Reset all performance counters to zero.

heap-collect-force

Force a full GC mark/sweep cycle, returning the number of objects freed.

Returns: INT — Number of objects freed

heap-collect

Smart GC: only collect when allocations since last run exceed surviving objects.

Returns: INT — Number of objects freed, or 0 if skipped

profile-dump

Dump all profile counters to stderr.