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Slobodan Predolac e0eda9659b Add timer_scale to uniformly scale time-based thresholds
timer_scale multiplies the tcache GC interval, dirty/muzzy decay
epochs, HPA min purge interval and hugify delay, and the background
thread minimum sleep.  Set it with MALLOC_CONF=timer_scale:N (1..1000,
default 1; opt.timer_scale) or at run time via the "timer_scale"
mallctl.  Useful when the whole process runs uniformly slower, e.g.
under heavy profiling or instrumentation.

Decay samples timer_scale once per epoch; reported decay_ms values are
unscaled.
2026-10-09 13:13:31 -04:00
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