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libexpr: Track and show GC time and cycle number

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This commit is contained in:
Robert Hensing 2024-07-22 12:56:01 +02:00
parent 0ec5e3a1bc
commit b16861d82e
3 changed files with 32 additions and 0 deletions
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13
src/libexpr/eval.cc
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@ -2610,6 +2610,11 @@ void EvalState::printStatistics()
#if HAVE_BOEHMGC
GC_word heapSize, totalBytes;
GC_get_heap_usage_safe(&heapSize, 0, 0, 0, &totalBytes);
double gcFullOnlyTime = ({
auto ms = GC_get_full_gc_total_time();
ms * 0.001;
});
auto gcCycles = getGCCycles();
#endif
auto outPath = getEnv("NIX_SHOW_STATS_PATH").value_or("-");
@ -2620,6 +2625,13 @@ void EvalState::printStatistics()
#ifndef _WIN32 // TODO implement
topObj["cpuTime"] = cpuTime;
#endif
topObj["time"] = {
{"cpu", cpuTime},
#ifdef HAVE_BOEHMGC
{GC_is_incremental_mode() ? "gcNonIncremental" : "gc", gcFullOnlyTime},
{GC_is_incremental_mode() ? "gcNonIncrementalFraction" : "gcFraction", gcFullOnlyTime / cpuTime},
#endif
};
topObj["envs"] = {
{"number", nrEnvs},
{"elements", nrValuesInEnvs},
@ -2661,6 +2673,7 @@ void EvalState::printStatistics()
topObj["gc"] = {
{"heapSize", heapSize},
{"totalBytes", totalBytes},
{"cycles", gcCycles},
};
#endif