Lines Matching +full:system +full:- +full:wide
1 perf-amd-ibs(1)
5 ----
6 perf-amd-ibs - Support for AMD Instruction-Based Sampling (IBS) with perf tool
9 --------
11 'perf record' -e ibs_op//
12 'perf record' -e ibs_fetch//
15 -----------
17 Instruction-Based Sampling (IBS) provides precise Instruction Pointer (IP)
20 execution (micro-op execution to be precise) with details like d-cache
21 hit/miss, d-TLB hit/miss, cache miss latency, load/store data source, branch
23 with details like i-cache hit/miss, i-TLB hit/miss, fetch latency etc. IBS is
24 per-smt-thread i.e. each SMT hardware thread contains standalone IBS units.
40 ------------------------
54 -e cpu-cycles:p becomes -e ibs_op//
55 -e r076:p becomes -e ibs_op//
56 -e r0C1:p becomes -e ibs_op/cnt_ctl=1/
59 --------
64 System-wide profile, cycles event, sampling period: 100000
66 # perf record -e ibs_op// -c 100000 -a
68 Per-cpu profile (cpu10), cycles event, sampling period: 100000
70 # perf record -e ibs_op// -c 100000 -C 10
72 Per-cpu profile (cpu10), cycles event, sampling freq: 1000
74 # perf record -e ibs_op// -F 1000 -C 10
76 System-wide profile, uOps event, sampling period: 100000
78 # perf record -e ibs_op/cnt_ctl=1/ -c 100000 -a
82 # perf record -e ibs_op/cnt_ctl=1/ -c 100000 -a --raw-samples
84 System-wide profile, uOps event, sampling period: 100000, L3MissOnly (Zen4 onward)
86 # perf record -e ibs_op/cnt_ctl=1,l3missonly=1/ -c 100000 -a
88 System-wide profile, cycles event, sampling period: 100000, LdLat filtering (Zen5
91 # perf record -e ibs_op/ldlat=128/ -c 100000 -a
99 # perf record -e ibs_op/cnt_ctl=1/ -c 100000 -p 1234
103 # perf record -e ibs_op/cnt_ctl=1/ -c 100000 -- ls
114 Raw dump of IBS registers when profiled with --raw-samples
116 # perf report -D
142 https://lore.kernel.org/r/20220921063638.2489-1-kprateek.nayak@amd.com
149 System-wide profile, fetch ops event, sampling period: 100000
151 # perf record -e ibs_fetch// -c 100000 -a
153 System-wide profile, fetch ops event, sampling period: 100000, Random enable
155 # perf record -e ibs_fetch/rand_en=1/ -c 100000 -a
164 ---------------------
170 # perf mem record -c 100000 -- make
176 # perf mem report -F overhead,cache,snoop,comm
181 # ---------- Cache ----------- --- Snoop ----
182 # Overhead L1 L2 L1-buf Other HitM Other Command
191 0.28% 0.1% 0.0% 0.0% 0.2% 0.1% 0.2% pkg-config
199 # perf mem report -s mem,snoop
220 --------
222 linkperf:perf-record[1], linkperf:perf-script[1], linkperf:perf-report[1],
223 linkperf:perf-mem[1], linkperf:perf-c2c[1]