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perfmon: show distribution of uops delivered to frontend

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Breakdown the distribution of uops delivered to the frontend.
Collerates directly with the source of the uops.

Type: improvement

Signed-off-by: Ray Kinsella <mdr@ashroe.eu>
Change-Id: I93a57dbe56dfa0f378527844aa4e63f45a548e55
This commit is contained in:
Ray Kinsella
2022-02-18 04:17:56 +00:00
committed by Damjan Marion
parent 502714fc44
commit 489d89c1cb
4 changed files with 109 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/plugins/perfmon/CMakeLists.txt
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@ -34,7 +34,8 @@ add_vpp_plugin(perfmon
intel/bundle/topdown_metrics.c
intel/bundle/topdown_icelake.c
intel/bundle/topdown_tremont.c
intel/bundle/frontend_bound_bw.c
intel/bundle/frontend_bound_bw_src.c
intel/bundle/frontend_bound_bw_uops.c
intel/bundle/frontend_bound_lat.c
intel/bundle/iio_bw.c

14
src/plugins/perfmon/intel/bundle/frontend_bound_bw.c → src/plugins/perfmon/intel/bundle/frontend_bound_bw_src.c
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@ -25,7 +25,7 @@ enum
};
static u8 *
format_intel_frontend_bound_bw (u8 *s, va_list *args)
format_intel_frontend_bound_bw_src (u8 *s, va_list *args)
{
perfmon_node_stats_t *ss = va_arg (*args, perfmon_node_stats_t *);
int row = va_arg (*args, int);
@ -65,12 +65,12 @@ format_intel_frontend_bound_bw (u8 *s, va_list *args)
return s;
}
static perfmon_cpu_supports_t frontend_bound_bw_cpu_supports[] = {
static perfmon_cpu_supports_t frontend_bound_bw_cpu_supports_src[] = {
{ clib_cpu_supports_avx512_bitalg, PERFMON_BUNDLE_TYPE_NODE },
};
PERFMON_REGISTER_BUNDLE (intel_core_frontend_bound_bw) = {
.name = "td-frontend-bw",
PERFMON_REGISTER_BUNDLE (intel_core_frontend_bound_bw_src) = {
.name = "td-frontend-bw-src",
.description =
"Topdown FrontEnd-bound BandWidth - % uops from each uop fetch source",
.source = "intel-core",
@ -79,9 +79,9 @@ PERFMON_REGISTER_BUNDLE (intel_core_frontend_bound_bw) = {
.events[2] = INTEL_CORE_E_IDQ_MITE_UOPS, /* 0x0F */
.events[3] = INTEL_CORE_E_LSD_UOPS, /* 0x0F */
.n_events = 4,
.format_fn = format_intel_frontend_bound_bw,
.cpu_supports = frontend_bound_bw_cpu_supports,
.n_cpu_supports = ARRAY_LEN (frontend_bound_bw_cpu_supports),
.format_fn = format_intel_frontend_bound_bw_src,
.cpu_supports = frontend_bound_bw_cpu_supports_src,
.n_cpu_supports = ARRAY_LEN (frontend_bound_bw_cpu_supports_src),
.column_headers = PERFMON_STRINGS ("UOPs/PKT", "% DSB UOPS", "% MS UOPS",
"% MITE UOPS", "% LSD UOPS"),
.footer =

89
src/plugins/perfmon/intel/bundle/frontend_bound_bw_uops.c Normal file
View File

@ -0,0 +1,89 @@
/*
* Copyright (c) 2022 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
{
THREAD_P,
THREE_UOP,
TWO_UOP,
ONE_UOP,
NO_UOP,
FOUR_UOP,
};
static u8 *
format_intel_frontend_bound_bw_uops (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;
f64 cycles = ss->value[THREAD_P];
switch (row)
{
case 0:
sv = (ss->value[FOUR_UOP] / cycles) * 100;
break;
case 1:
sv = ((ss->value[THREE_UOP] - ss->value[TWO_UOP]) / cycles) * 100;
break;
case 2:
sv = ((ss->value[TWO_UOP] - ss->value[ONE_UOP]) / cycles) * 100;
break;
case 3:
sv = ((ss->value[ONE_UOP] - ss->value[NO_UOP]) / cycles) * 100;
break;
case 4:
sv = (ss->value[NO_UOP] / cycles) * 100;
break;
}
s = format (s, "%04.1f", sv);
return s;
}
static perfmon_cpu_supports_t frontend_bound_bw_cpu_supports_uops[] = {
{ clib_cpu_supports_avx512_bitalg, PERFMON_BUNDLE_TYPE_NODE },
};
PERFMON_REGISTER_BUNDLE (intel_core_frontend_bound_bw_uops) = {
.name = "td-frontend-bw-uops",
.description = "Topdown FrontEnd-bound BandWidth - distribution of "
"uops delivered to frontend",
.source = "intel-core",
.events[0] = INTEL_CORE_E_CPU_CLK_UNHALTED_THREAD_P, /* 0x0F */
.events[1] =
INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_3_UOP_DELIV_CORE, /* 0xFF */
.events[2] =
INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_2_UOP_DELIV_CORE, /* 0xFF */
.events[3] =
INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_1_UOP_DELIV_CORE, /* 0xFF */
.events[4] =
INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_0_UOP_DELIV_CORE, /* 0xFF */
.events[5] = INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_FE_WAS_OK, /* 0xFF */
.n_events = 6,
.format_fn = format_intel_frontend_bound_bw_uops,
.cpu_supports = frontend_bound_bw_cpu_supports_uops,
.n_cpu_supports = ARRAY_LEN (frontend_bound_bw_cpu_supports_uops),
.column_headers = PERFMON_STRINGS ("% 4 UOPS", "% 3 UOPS", "% 2 UOPS",
"% 1 UOPS", "% 0 UOPS"),
.footer =
"For more information, see the Intel(R) 64 and IA-32 Architectures\n"
"Optimization Reference Manual section on the Front End.",
};

11
src/plugins/perfmon/intel/core.h
View File

@ -152,6 +152,17 @@
_ (0x9C, 0x01, 0, 0, 0, 0x05, IDQ_UOPS_NOT_DELIVERED, CORE, \
"Uops not delivered to Resource Allocation Table (RAT) per thread when " \
"backend of the machine is not stalled") \
_ (0x9C, 0x01, 0, 0, 1, 0x01, IDQ_UOPS_NOT_DELIVERED, CYCLES_FE_WAS_OK, \
"Cycles with 4 uops delivered by the front end or Resource Allocation " \
"Table (RAT) was stalling FE.x") \
_ (0x9C, 0x01, 0, 0, 0, 0x01, IDQ_UOPS_NOT_DELIVERED_CYCLES_3_UOP_DELIV, \
CORE, "Cycles with 3 uops delivered by the front end.") \
_ (0x9C, 0x01, 0, 0, 0, 0x02, IDQ_UOPS_NOT_DELIVERED_CYCLES_2_UOP_DELIV, \
CORE, "Cycles with 2 uops delivered by the front end.") \
_ (0x9C, 0x01, 0, 0, 0, 0x03, IDQ_UOPS_NOT_DELIVERED_CYCLES_1_UOP_DELIV, \
CORE, "Cycles with 1 uops delivered by the front end.") \
_ (0x9C, 0x01, 0, 0, 0, 0x04, IDQ_UOPS_NOT_DELIVERED_CYCLES_0_UOP_DELIV, \
CORE, "Cycles with 0 uops delivered by the front end.") \
_ (0xA1, 0x01, 0, 0, 0, 0x00, UOPS_DISPATCHED, PORT_0, \
"Number of uops executed on port 0") \
_ (0xA1, 0x02, 0, 0, 0, 0x00, UOPS_DISPATCHED, PORT_1, \