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[HPA] Add ability to start page as huge and more flexibility for purging

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This commit is contained in:
Slobodan Predolac 2025-08-25 13:23:07 -07:00 • committed by Guangli Dai
parent ace437d26a
commit a199278f37
20 changed files with 1231 additions and 116 deletions
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44
src/jemalloc.c
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@ -1619,6 +1619,50 @@ malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
opt_hpa_opts.experimental_max_purge_nhp,
"experimental_hpa_max_purge_nhp", -1, SSIZE_MAX);
/*
* Accept either a ratio-based or an exact purge
* threshold.
*/
CONF_HANDLE_SIZE_T(opt_hpa_opts.purge_threshold,
"hpa_purge_threshold", PAGE, HUGEPAGE,
CONF_CHECK_MIN, CONF_CHECK_MAX, true);
if (CONF_MATCH("hpa_purge_threshold_ratio")) {
fxp_t ratio;
char *end;
bool err = fxp_parse(&ratio, v, &end);
if (err || (size_t)(end - v) != vlen
|| ratio > FXP_INIT_INT(1)) {
CONF_ERROR("Invalid conf value", k,
klen, v, vlen);
} else {
opt_hpa_opts.purge_threshold =
fxp_mul_frac(HUGEPAGE, ratio);
}
CONF_CONTINUE;
}
CONF_HANDLE_UINT64_T(opt_hpa_opts.min_purge_delay_ms,
"hpa_min_purge_delay_ms", 0, UINT64_MAX,
CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX, false);
if (strncmp("hpa_hugify_style", k, klen) == 0) {
bool match = false;
for (int m = 0; m < hpa_hugify_style_limit; m++) {
if (strncmp(hpa_hugify_style_names[m],
v, vlen)
== 0) {
opt_hpa_opts.hugify_style = m;
match = true;
break;
}
}
if (!match) {
CONF_ERROR("Invalid conf value", k,
klen, v, vlen);
}
CONF_CONTINUE;
}
if (CONF_MATCH("hpa_dirty_mult")) {
if (CONF_MATCH_VALUE("-1")) {
opt_hpa_opts.dirty_mult = (fxp_t)-1;