2 * Copyright (c) 2020 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/vnet.h>
17 #include <perfmon/perfmon.h>
18 #include <perfmon/intel/core.h>
21 format_load_blocks (u8 *s, va_list *args)
23 perfmon_node_stats_t *ns = va_arg (*args, perfmon_node_stats_t *);
24 int row = va_arg (*args, int);
29 s = format (s, "%12lu", ns->n_calls);
32 s = format (s, "%12lu", ns->n_packets);
35 s = format (s, "%9.2f", (f64) ns->value[0] / ns->n_calls);
38 s = format (s, "%9.2f", (f64) ns->value[1] / ns->n_calls);
41 s = format (s, "%9.2f", (f64) ns->value[2] / ns->n_calls);
47 PERFMON_REGISTER_BUNDLE (load_blocks) = {
48 .name = "load-blocks",
49 .description = "load operations blocked due to various uarch reasons",
50 .source = "intel-core",
51 .type = PERFMON_BUNDLE_TYPE_NODE,
52 .events[0] = INTEL_CORE_E_LD_BLOCKS_STORE_FORWARD,
53 .events[1] = INTEL_CORE_E_LD_BLOCKS_NO_SR,
54 .events[2] = INTEL_CORE_E_LD_BLOCKS_PARTIAL_ADDRESS_ALIAS,
56 .format_fn = format_load_blocks,
57 .column_headers = PERFMON_STRINGS ("Calls", "Packets", "[1]", "[2]", "[3]"),
58 .footer = "Per node call statistics:\n"
59 "[1] Loads blocked due to overlapping with a preceding store that "
60 "cannot be forwarded.\n"
61 "[2] The number of times that split load operations are "
62 "temporarily blocked because\n"
63 " all resources for handling the split accesses are in use\n"
64 "[3] False dependencies in Memory Order Buffer (MOB) due to "
65 "partial compare on address.\n",