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Add JEMALLOC_COLD, and mark some functions cold.

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This hints to the compiler that it should care more about space than CPU (among
other things).  In cases where the compiler lacks profile-guided information,
this can be a substantial space savings.

For now, we mark the mallctl or atexit driven profiling and stats functions that
take up the most space.
This commit is contained in:
David Goldblatt
2020-12-17 12:04:07 -08:00
committed by David Goldblatt
parent 5d8e70ab26
commit a9fa2defdb
7 changed files with 36 additions and 1 deletions
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6
src/stats.c
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@@ -281,6 +281,7 @@ mutex_stats_emit(emitter_t *emitter, emitter_row_t *row,
header_##column_name.str_val = human ? human : #column_name;
JEMALLOC_COLD
static void
stats_arena_bins_print(emitter_t *emitter, bool mutex, unsigned i, uint64_t uptime) {
size_t page;
@@ -488,6 +489,7 @@ stats_arena_bins_print(emitter_t *emitter, bool mutex, unsigned i, uint64_t upti
}
}
JEMALLOC_COLD
static void
stats_arena_lextents_print(emitter_t *emitter, unsigned i, uint64_t uptime) {
unsigned nbins, nlextents, j;
@@ -576,6 +578,7 @@ stats_arena_lextents_print(emitter_t *emitter, unsigned i, uint64_t uptime) {
}
}
JEMALLOC_COLD
static void
stats_arena_extents_print(emitter_t *emitter, unsigned i) {
unsigned j;
@@ -841,6 +844,7 @@ stats_arena_mutexes_print(emitter_t *emitter, unsigned arena_ind, uint64_t uptim
emitter_json_object_end(emitter); /* End "mutexes". */
}
JEMALLOC_COLD
static void
stats_arena_print(emitter_t *emitter, unsigned i, bool bins, bool large,
bool mutex, bool extents, bool hpa) {
@@ -1168,6 +1172,7 @@ stats_arena_print(emitter_t *emitter, unsigned i, bool bins, bool large,
}
}
JEMALLOC_COLD
static void
stats_general_print(emitter_t *emitter) {
const char *cpv;
@@ -1445,6 +1450,7 @@ stats_general_print(emitter_t *emitter) {
emitter_json_object_end(emitter); /* Close "arenas" */
}
JEMALLOC_COLD
static void
stats_print_helper(emitter_t *emitter, bool merged, bool destroyed,
bool unmerged, bool bins, bool large, bool mutex, bool extents, bool hpa) {