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Alex Cope 2023-07-07 07:37:07 -07:00 committed by Malavan Sotheeswaran
parent cf4735b61e
commit b5a20a4f91
2 changed files with 18 additions and 5 deletions
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18
src/evict.cpp
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@ -414,8 +414,13 @@ size_t freeMemoryGetNotCountedMemory(void) {
* memory currently used. May be > 1 if we are over the memory
* limit.
* (Populated both for C_ERR and C_OK)
*
* 'reason' the reason why the memory limit was exceeded
* EVICT_REASON_USER: reported user memory exceeded maxmemory
* EVICT_REASON_SYS: available system memory under configurable threshold
* (Populated when C_ERR is returned)
*/
int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *level, bool fQuickCycle, bool fPreSnapshot) {
int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *level, int *reason, bool fQuickCycle, bool fPreSnapshot) {
size_t mem_reported, mem_used, mem_tofree;
/* Check if we are over the memory usage limit. If we are not, no need
@ -480,6 +485,8 @@ int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *lev
if (logical) *logical = mem_used;
if (tofree) *tofree = mem_tofree;
if (reason) *reason = sys_available_mem_buffer < 0 ? EVICT_REASON_SYS : EVICT_REASON_USER;
return C_ERR;
}
@ -668,10 +675,11 @@ int performEvictions(bool fPreSnapshot) {
const bool fEvictToStorage = !cserver.delete_on_evict && g_pserver->db[0]->FStorageProvider();
int result = EVICT_FAIL;
int ckeysFailed = 0;
int evictReason;
std::unique_ptr<FreeMemoryLazyFree> splazy = std::make_unique<FreeMemoryLazyFree>();
if (getMaxmemoryState(&mem_reported,NULL,&mem_tofree,NULL,false,fPreSnapshot) == C_OK)
if (getMaxmemoryState(&mem_reported,NULL,&mem_tofree,NULL,&evictReason,false,fPreSnapshot) == C_OK)
return EVICT_OK;
if (g_pserver->maxmemory_policy == MAXMEMORY_NO_EVICTION)
@ -854,7 +862,9 @@ int performEvictions(bool fPreSnapshot) {
* across the dbAsyncDelete() call, while the thread can
* release the memory all the time. */
if (g_pserver->lazyfree_lazy_eviction) {
updateSysAvailableMemory();
if (evictReason == EVICT_REASON_SYS) {
updateSysAvailableMemory();
}
if (getMaxmemoryState(NULL,NULL,NULL,NULL) == C_OK) {
break;
}
@ -885,7 +895,7 @@ int performEvictions(bool fPreSnapshot) {
}
cant_free:
if (mem_freed > 0) {
if (mem_freed > 0 && evictReason == EVICT_REASON_SYS) {
updateSysAvailableMemory();
}

5
src/server.h
View File

@ -3378,7 +3378,7 @@ int zslLexValueGteMin(sds value, zlexrangespec *spec);
int zslLexValueLteMax(sds value, zlexrangespec *spec);
/* Core functions */
int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *level, bool fQuickCycle = false, bool fPreSnapshot=false);
int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *level, int *reason=NULL, bool fQuickCycle=false, bool fPreSnapshot=false);
size_t freeMemoryGetNotCountedMemory();
int overMaxmemoryAfterAlloc(size_t moremem);
int processCommand(client *c, int callFlags);
@ -3662,6 +3662,9 @@ unsigned long LFUDecrAndReturn(robj_roptr o);
#define EVICT_RUNNING 1
#define EVICT_FAIL 2
int performEvictions(bool fPreSnapshot);
#define EVICT_REASON_NONE 0
#define EVICT_REASON_USER 1
#define EVICT_REASON_SYS 2
/* meminfo.cpp -- get memory info from /proc/memoryinfo for linux distros */
size_t getMemAvailable();