1 .\" Copyright (c) 2013 Hiren Panchasara <hiren.panchasara@gmail.com>
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 .Nd uncore measurement events for
41 CPUs contain PMCs conforming to version 3 of the
43 performance measurement architecture.
44 These CPUs contain two classes of PMCs:
45 .Bl -tag -width "Li PMC_CLASS_UCP"
47 Fixed-function counters that count only one hardware event per counter.
49 Programmable counters that may be configured to count one of a defined
50 set of hardware events.
53 The number of PMCs available in each class and their widths need to be
54 determined at run time by calling
57 Intel Haswell PMCs are documented in
59 .%B "Intel(R) 64 and IA-32 Architectures Software Developers Manual"
60 .%T "Combined Volumes: 1, 2A, 2B, 2C, 3A, 3B and 3C"
61 .%N "Order Number: 325462-045US"
63 .%Q "Intel Corporation"
65 .Ss HASWELL UNCORE FIXED FUNCTION PMCS
66 These PMCs and their supported events are documented in
68 Not all CPUs in this family implement fixed-function counters.
69 .Ss HASWELL UNCORE PROGRAMMABLE PMCS
70 The programmable PMCs support the following capabilities:
71 .Bl -column "PMC_CAP_INTERRUPT" "Support"
72 .It Em Capability Ta Em Support
73 .It PMC_CAP_CASCADE Ta \&No
74 .It PMC_CAP_EDGE Ta Yes
75 .It PMC_CAP_INTERRUPT Ta \&No
76 .It PMC_CAP_INVERT Ta Yes
77 .It PMC_CAP_READ Ta Yes
78 .It PMC_CAP_PRECISE Ta \&No
79 .It PMC_CAP_SYSTEM Ta \&No
80 .It PMC_CAP_TAGGING Ta \&No
81 .It PMC_CAP_THRESHOLD Ta Yes
82 .It PMC_CAP_USER Ta \&No
83 .It PMC_CAP_WRITE Ta Yes
86 Event specifiers for these PMCs support the following common
88 .Bl -tag -width indent
89 .It Li cmask= Ns Ar value
90 Configure the PMC to increment only if the number of configured
91 events measured in a cycle is greater than or equal to
94 Configure the PMC to count the number of de-asserted to asserted
95 transitions of the conditions expressed by the other qualifiers.
96 If specified, the counter will increment only once whenever a
97 condition becomes true, irrespective of the number of clocks during
98 which the condition remains true.
100 Invert the sense of comparison when the
102 qualifier is present, making the counter increment when the number of
103 events per cycle is less than the value specified by the
107 .Ss Event Specifiers (Programmable PMCs)
108 Haswell programmable PMCs support the following events:
109 .Bl -tag -width indent
110 .It Li UNC_CBO_XSNP_RESPONSE.MISS
111 .Pq Event 22H , Umask 01H
112 A snoop misses in some processor core.
113 .It Li UNC_CBO_XSNP_RESPONSE.INVAL
114 .Pq Event 22H , Umask 02H
115 A snoop invalidates a non-modified line in some
117 .It Li UNC_CBO_XSNP_RESPONSE.HIT
118 .Pq Event 22H , Umask 04H
119 A snoop hits a non-modified line in some processor
121 .It Li UNC_CBO_XSNP_RESPONSE.HITM
122 .Pq Event 22H , Umask 08H
123 A snoop hits a modified line in some processor core.
124 .It Li UNC_CBO_XSNP_RESPONSE.INVAL_M
125 .Pq Event 22H , Umask 10H
126 A snoop invalidates a modified line in some processor
128 .It Li UNC_CBO_XSNP_RESPONSE.EXTERNAL_FILTER
129 .Pq Event 22H , Umask 20H
130 Filter on cross-core snoops initiated by this Cbox due
131 to external snoop request.
132 .It Li UNC_CBO_XSNP_RESPONSE.XCORE_FILTER
133 .Pq Event 22H , Umask 40H
134 Filter on cross-core snoops initiated by this Cbox due
135 to processor core memory request.
136 .It Li UNC_CBO_XSNP_RESPONSE.EVICTION_FILTER
137 .Pq Event 22H , Umask 80H
138 Filter on cross-core snoops initiated by this Cbox due
140 .It Li UNC_CBO_CACHE_LOOKUP.M
141 .Pq Event 34H , Umask 01H
142 LLC lookup request that access cache and found line in
144 .It Li UNC_CBO_CACHE_LOOKUP.ES
145 .Pq Event 34H , Umask 06H
146 LLC lookup request that access cache and found line in
148 .It Li UNC_CBO_CACHE_LOOKUP.I
149 .Pq Event 34H , Umask 08H
150 LLC lookup request that access cache and found line in
152 .It Li UNC_CBO_CACHE_LOOKUP.READ_FILTER
153 .Pq Event 34H , Umask 10H
154 Filter on processor core initiated cacheable read
156 Must combine with at least one of 01H, 02H, 04H, 08H.
157 .It Li UNC_CBO_CACHE_LOOKUP.WRITE_FILTER
158 .Pq Event 34H , Umask 20H
159 Filter on processor core initiated cacheable write requests.
160 Must combine with at least one of 01H, 02H, 04H, 08H.
161 .It Li UNC_CBO_CACHE_LOOKUP.EXTSNP_FILTER
162 .Pq Event 34H , Umask 40H
163 Filter on external snoop requests.
164 Must combine with at least one of 01H, 02H, 04H, 08H.
165 .It Li UNC_CBO_CACHE_LOOKUP.ANY_REQUEST_FILTER
166 .Pq Event 34H , Umask 80H
167 Filter on any IRQ or IPQ initiated requests including
168 uncacheable, non-coherent requests.
169 Must combine with at least one of 01H, 02H, 04H, 08H.
170 .It Li UNC_ARB_TRK_OCCUPANCY.ALL
171 .Pq Event 80H , Umask 01H
172 Counts cycles weighted by the number of requests
173 waiting for data returning from the memory controller.
174 Accounts for coherent and non-coherent requests
175 initiated by IA cores, processor graphic units, or LLC.
176 .It Li UNC_ARB_TRK_REQUEST.ALL
177 .Pq Event 81H , Umask 01H
178 Counts the number of coherent and in-coherent
179 requests initiated by IA cores, processor graphic units,
181 .It Li UNC_ARB_TRK_REQUEST.WRITES
182 .Pq Event 81H , Umask 20H
183 Counts the number of allocated write entries, include
184 full, partial, and LLC evictions.
185 .It Li UNC_ARB_TRK_REQUEST.EVICTIONS
186 .Pq Event 81H , Umask 80H
187 Counts the number of LLC evictions allocated.
188 .It Li UNC_ARB_COH , Umask TRK_OCCUPANCY.ALL
189 .Pq Event 83H , Umask 01H
190 Cycles weighted by number of requests pending in
192 .It Li UNC_ARB_COH , Umask TRK_REQUEST.ALL
193 .Pq Event 84H , Umask 01H
194 Number of requests allocated in Coherency Tracker.
206 .Xr pmc.sandybridge 3 ,
207 .Xr pmc.sandybridgeuc 3 ,
208 .Xr pmc.sandybridgexeon 3 ,
213 .Xr pmc.westmereuc 3 ,
220 library first appeared in
226 library was written by
227 .An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .
228 The support for the Haswell
229 microarchitecture was added by
230 .An Hiren Panchasara Aq Mt hiren.panchasara@gmail.com .