From d74796ecb17a68d442e846c4032a57cb2c083686 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Mon, 18 Dec 2017 18:41:38 +0100 Subject: erts: Add more stats for mbcs_pool similar to the ones in OTP-19.2.3.1 --- erts/emulator/beam/erl_alloc_util.c | 105 +++++++++++++++++++++++++++++++++--- 1 file changed, 99 insertions(+), 6 deletions(-) (limited to 'erts/emulator/beam/erl_alloc_util.c') 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, -- cgit v1.2.3