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/*
* Copyright (c) 2021 Intel and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
enum
{
STALLS_L1D_MISS = 0,
STALLS_L2_MISS = 1,
STALLS_L3_MISS = 2,
STALLS_MEM_ANY = 3,
STALLS_TOTAL = 4,
BOUND_ON_STORES = 5,
FB_FULL = 6,
THREAD = 7,
};
static u8 *
format_intel_backend_bound_mem (u8 *s, va_list *args)
{
perfmon_node_stats_t *ss = va_arg (*args, perfmon_node_stats_t *);
int row = va_arg (*args, int);
f64 sv = 0;
if (!ss->n_packets)
return s;
if (0 == row)
{
sv = ss->value[THREAD] / ss->n_packets;
s = format (s, "%.0f", sv);
return s;
}
switch (row)
{
case 1:
sv = ss->value[BOUND_ON_STORES];
break;
case 2:
sv = ss->value[STALLS_MEM_ANY] - ss->value[STALLS_L1D_MISS];
break;
case 3:
sv = ss->value[FB_FULL];
break;
case 4:
sv = ss->value[STALLS_L1D_MISS] - ss->value[STALLS_L2_MISS];
break;
case 5:
sv = ss->value[STALLS_L2_MISS] - ss->value[STALLS_L3_MISS];
break;
case 6:
sv = ss->value[STALLS_L3_MISS];
break;
}
sv = clib_max ((sv / ss->value[THREAD]) * 100, 0);
s = format (s, "%04.1f", sv);
return s;
}
static perfmon_cpu_supports_t backend_bound_mem_cpu_supports[] = {
{ clib_cpu_supports_avx512_bitalg, PERFMON_BUNDLE_TYPE_NODE },
};
PERFMON_REGISTER_BUNDLE (intel_core_backend_bound_mem) = {
.name = "td-backend-mem",
.description = "Topdown BackEnd-bound Memory - % cycles not retiring "
"instructions due to memory stalls",
.source = "intel-core",
.events[0] = INTEL_CORE_E_CYCLE_ACTIVITY_STALLS_L1D_MISS, /* 0x0F */
.events[1] = INTEL_CORE_E_CYCLE_ACTIVITY_STALLS_L2_MISS, /* 0x0F */
.events[2] = INTEL_CORE_E_CYCLE_ACTIVITY_STALLS_L3_MISS, /* 0x0F */
.events[3] = INTEL_CORE_E_CYCLE_ACTIVITY_STALLS_MEM_ANY, /* 0xFF */
.events[4] = INTEL_CORE_E_CYCLE_ACTIVITY_STALLS_TOTAL, /* 0xFF */
.events[5] = INTEL_CORE_E_EXE_ACTIVITY_BOUND_ON_STORES, /* 0xFF */
.events[6] = INTEL_CORE_E_L1D_PEND_MISS_FB_FULL, /* 0x0F */
.events[7] = INTEL_CORE_E_CPU_CLK_UNHALTED_THREAD_P, /* 0xFF */
.n_events = 8,
.format_fn = format_intel_backend_bound_mem,
.cpu_supports = backend_bound_mem_cpu_supports,
.n_cpu_supports = ARRAY_LEN (backend_bound_mem_cpu_supports),
.column_headers = PERFMON_STRINGS ("Clocks/Packet", "%Store Bound",
"%L1 Bound", "%FB Full", "%L2 Bound",
"%L3 Bound", "%DRAM Bound"),
};
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