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Memory (SunOS): takes ZFS arc bytes into account

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This commit is contained in:
李通洲
2026-06-27 17:49:32 +08:00
parent dfdc7284a2
commit 778aa21192
1 changed files with 36 additions and 2 deletions
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src/detection/memory/memory_sunos.c
+36 -2
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@@ -1,9 +1,43 @@
#include "memory.h"
#include <unistd.h>
#include <kstat.h>
static inline void kstatFreeWrap(kstat_ctl_t** pkc) {
assert(pkc);
if (*pkc) {
kstat_close(*pkc);
}
}
const char* ffDetectMemory(FFMemoryResult* ram) {
ram->bytesTotal = (uint64_t) sysconf(_SC_PHYS_PAGES) * instance.state.platform.sysinfo.pageSize;
ram->bytesUsed = ram->bytesTotal - (uint64_t) sysconf(_SC_AVPHYS_PAGES) * instance.state.platform.sysinfo.pageSize;
uint64_t pageSize = instance.state.platform.sysinfo.pageSize;
ram->bytesTotal = (uint64_t) sysconf(_SC_PHYS_PAGES) * pageSize;
ram->bytesUsed = ram->bytesTotal - (uint64_t) sysconf(_SC_AVPHYS_PAGES) * pageSize;
FF_A_CLEANUP(kstatFreeWrap) kstat_ctl_t* kc = kstat_open();
if (kc != NULL) {
kstat_t* ksp = kstat_lookup(kc, "zfs", -1, "arcstats");
if (ksp != NULL && kstat_read(kc, ksp, NULL) != -1) {
kstat_named_t* kn_size = (kstat_named_t*) kstat_data_lookup(ksp, "size");
kstat_named_t* kn_cmin = (kstat_named_t*) kstat_data_lookup(ksp, "c_min");
if (kn_size != NULL && kn_cmin != NULL &&
kn_size->data_type == KSTAT_DATA_UINT64 &&
kn_cmin->data_type == KSTAT_DATA_UINT64) {
uint64_t arcSize = kn_size->value.ui64;
uint64_t arcMin = kn_cmin->value.ui64;
if (arcSize > arcMin) {
uint64_t reclaimableArc = arcSize - arcMin;
if (ram->bytesUsed > reclaimableArc) {
ram->bytesUsed -= reclaimableArc;
}
}
}
}
}
return NULL;
}