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-rw-r--r--erts/emulator/beam/erl_alloc_util.c105
-rw-r--r--erts/emulator/beam/erl_alloc_util.h11
2 files changed, 110 insertions, 6 deletions
diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c
index dbf27f1d2f..970facce09 100644
--- a/erts/emulator/beam/erl_alloc_util.c
+++ b/erts/emulator/beam/erl_alloc_util.c
@@ -3267,6 +3267,7 @@ cpool_fetch(Allctr_t *allctr, UWord size)
ASSERT(exp & ERTS_CRR_ALCTR_FLG_HOMECOMING);
crr->cpool.pooled.hdr.bhdr = erts_atomic_read_nob(&crr->cpool.max_size);
aoff_add_pooled_mbc(allctr, crr);
+ INC_CC(allctr->cpool.stat.skip_size);
continue;
}
else if (exp & ERTS_CRR_ALCTR_FLG_BUSY) {
@@ -3277,6 +3278,7 @@ cpool_fetch(Allctr_t *allctr, UWord size)
*/
ASSERT(!reinsert_crr);
reinsert_crr = crr;
+ INC_CC(allctr->cpool.stat.skip_busy);
continue;
}
@@ -3293,7 +3295,10 @@ cpool_fetch(Allctr_t *allctr, UWord size)
return crr;
}
exp = act;
+ INC_CC(allctr->cpool.stat.skip_race);
}
+ else
+ INC_CC(allctr->cpool.stat.skip_not_pooled);
/* Not in pool anymore */
ASSERT(!(exp & ERTS_CRR_ALCTR_FLG_BUSY));
@@ -3321,8 +3326,10 @@ cpool_fetch(Allctr_t *allctr, UWord size)
aoff_remove_pooled_mbc(allctr, crr);
crr->cpool.state = ERTS_MBC_WAS_TRAITOR;
- if (--i <= 0)
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_pooled);
return NULL;
+ }
}
@@ -3363,6 +3370,7 @@ cpool_fetch(Allctr_t *allctr, UWord size)
else if (cpdp == sentinel) {
if (loop_state == HAS_SEEN_SENTINEL) {
/* We been here before. cpool_entrance must have been removed */
+ INC_CC(allctr->cpool.stat.entrance_removed);
break;
}
cpdp = cpool_aint2cpd(cpool_read(&cpdp->prev));
@@ -3372,9 +3380,12 @@ cpool_fetch(Allctr_t *allctr, UWord size)
}
crr = ErtsContainerStruct(cpdp, Carrier_t, cpool);
exp = erts_smp_atomic_read_rb(&crr->allctr);
- if (((exp & (ERTS_CRR_ALCTR_FLG_IN_POOL |
- ERTS_CRR_ALCTR_FLG_BUSY)) == ERTS_CRR_ALCTR_FLG_IN_POOL)
- && (erts_atomic_read_nob(&cpdp->max_size) >= size)) {
+
+ if (erts_atomic_read_nob(&cpdp->max_size) < size) {
+ INC_CC(allctr->cpool.stat.skip_size);
+ }
+ else if ((exp & (ERTS_CRR_ALCTR_FLG_IN_POOL | ERTS_CRR_ALCTR_FLG_BUSY))
+ == ERTS_CRR_ALCTR_FLG_IN_POOL) {
erts_aint_t act;
erts_aint_t want = (((erts_aint_t) allctr)
| (exp & ERTS_CRR_ALCTR_FLG_HOMECOMING));
@@ -3390,8 +3401,15 @@ cpool_fetch(Allctr_t *allctr, UWord size)
}
}
- if (--i <= 0)
+ if (exp & ERTS_CRR_ALCTR_FLG_BUSY)
+ INC_CC(allctr->cpool.stat.skip_busy);
+ else
+ INC_CC(allctr->cpool.stat.skip_race);
+
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_shared);
return NULL;
+ }
}while (loop_state != THE_LAST_ONE);
check_dc_list:
@@ -3409,10 +3427,15 @@ check_dc_list:
return crr;
}
crr = crr->prev;
- if (--i <= 0)
+ if (--i <= 0) {
+ INC_CC(allctr->cpool.stat.fail_pend_dealloc);
return NULL;
+ }
}
+ if (i != ERTS_ALC_CPOOL_MAX_FETCH_INSPECT)
+ INC_CC(allctr->cpool.stat.fail);
+
return NULL;
}
@@ -3822,6 +3845,7 @@ create_carrier(Allctr_t *allctr, Uint umem_sz, UWord flags)
crr = cpool_fetch(allctr, blk_sz);
if (crr) {
STAT_MBC_CPOOL_FETCH(allctr, crr);
+ INC_CC(allctr->cpool.stat.fetch);
link_carrier(&allctr->mbc_list, crr);
(*allctr->add_mbc)(allctr, crr);
blk = (*allctr->get_free_block)(allctr, blk_sz, NULL, 0);
@@ -4278,6 +4302,17 @@ static struct {
Eterm mbcs;
#ifdef ERTS_SMP
Eterm mbcs_pool;
+ Eterm fetch;
+ Eterm fail_pooled;
+ Eterm fail_shared;
+ Eterm fail_pend_dealloc;
+ Eterm fail;
+ Eterm skip_size;
+ Eterm skip_busy;
+ Eterm skip_not_pooled;
+ Eterm skip_homecoming;
+ Eterm skip_race;
+ Eterm entrance_removed;
#endif
Eterm sbcs;
@@ -4368,6 +4403,17 @@ init_atoms(Allctr_t *allctr)
AM_INIT(mbcs);
#ifdef ERTS_SMP
AM_INIT(mbcs_pool);
+ AM_INIT(fetch);
+ AM_INIT(fail_pooled);
+ AM_INIT(fail_shared);
+ AM_INIT(fail_pend_dealloc);
+ AM_INIT(fail);
+ AM_INIT(skip_size);
+ AM_INIT(skip_busy);
+ AM_INIT(skip_not_pooled);
+ AM_INIT(skip_homecoming);
+ AM_INIT(skip_race);
+ AM_INIT(entrance_removed);
#endif
AM_INIT(sbcs);
@@ -4653,9 +4699,56 @@ info_cpool(Allctr_t *allctr,
if (hpp || szp) {
res = NIL;
+
+ if (!sz_only) {
+ add_3tup(hpp, szp, &res, am.fail_pooled,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_pooled)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_pooled)));
+
+ add_3tup(hpp, szp, &res, am.fail_shared,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_shared)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_shared)));
+
+ add_3tup(hpp, szp, &res, am.fail_pend_dealloc,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail_pend_dealloc)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail_pend_dealloc)));
+
+ add_3tup(hpp, szp, &res, am.fail,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fail)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fail)));
+
+ add_3tup(hpp, szp, &res, am.fetch,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.fetch)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.fetch)));
+
+ add_3tup(hpp, szp, &res, am.skip_size,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_size)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_size)));
+
+ add_3tup(hpp, szp, &res, am.skip_busy,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_busy)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_busy)));
+
+ add_3tup(hpp, szp, &res, am.skip_not_pooled,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_not_pooled)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_not_pooled)));
+
+ add_3tup(hpp, szp, &res, am.skip_homecoming,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_homecoming)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_homecoming)));
+
+ add_3tup(hpp, szp, &res, am.skip_race,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.skip_race)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.skip_race)));
+
+ add_3tup(hpp, szp, &res, am.entrance_removed,
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_GIGA_VAL(allctr->cpool.stat.entrance_removed)),
+ bld_unstable_uint(hpp, szp, ERTS_ALC_CC_VAL(allctr->cpool.stat.entrance_removed)));
+
add_2tup(hpp, szp, &res,
am.carriers_size,
bld_unstable_uint(hpp, szp, csz));
+ }
if (!sz_only)
add_2tup(hpp, szp, &res,
am.carriers,
diff --git a/erts/emulator/beam/erl_alloc_util.h b/erts/emulator/beam/erl_alloc_util.h
index e5bf494e97..19165d83d9 100644
--- a/erts/emulator/beam/erl_alloc_util.h
+++ b/erts/emulator/beam/erl_alloc_util.h
@@ -602,6 +602,17 @@ struct Allctr_t_ {
erts_atomic_t no_blocks;
erts_atomic_t carriers_size;
erts_atomic_t no_carriers;
+ CallCounter_t fail_pooled;
+ CallCounter_t fail_shared;
+ CallCounter_t fail_pend_dealloc;
+ CallCounter_t fail;
+ CallCounter_t fetch;
+ CallCounter_t skip_size;
+ CallCounter_t skip_busy;
+ CallCounter_t skip_not_pooled;
+ CallCounter_t skip_homecoming;
+ CallCounter_t skip_race;
+ CallCounter_t entrance_removed;
} stat;
} cpool;
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 15:48:09 +0000