1 Calibration Data - Skylake
2 --------------------------
4 Following sections include sample calibration data measured on
5 s11-t31-sut1 server running in one of the Intel Xeon Skylake testbeds as
6 specified in `FD.io CSIT testbeds - Xeon Skylake, Arm, Atom`_.
8 Calibration data obtained from all other servers in Skylake testbeds
9 shows the same or similar values.
18 BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic root=UUID=e05120bb-7127-43db-b1e3-a66edd4c43bd ro isolcpus=1-27,29-55,57-83,85-111 nohz_full=1-27,29-55,57-83,85-111 rcu_nocbs=1-27,29-55,57-83,85-111 numa_balancing=disable intel_pstate=disable intel_iommu=on iommu=pt nmi_watchdog=0 audit=0 nosoftlockup processor.max_cstate=1 intel_idle.max_cstate=1 hpet=disable tsc=reliable mce=off console=tty0 console=ttyS0,115200n8
27 Linux s3-t21-sut1 4.15.0-72-generic #81-Ubuntu SMP Tue Nov 26 12:20:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
30 System-level Core Jitter
31 ~~~~~~~~~~~~~~~~~~~~~~~~
35 $ sudo taskset -c 3 /home/testuser/pma_tools/jitter/jitter -i 20
36 Linux Jitter testing program version 1.8
38 The pragram will execute a dummy function 80000 times
39 Display is updated every 20000 displayUpdate intervals
40 Timings are in CPU Core cycles
41 Inst_Min: Minimum Excution time during the display update interval(default is ~1 second)
42 Inst_Max: Maximum Excution time during the display update interval(default is ~1 second)
43 Inst_jitter: Jitter in the Excution time during rhe display update interval. This is the value of interest
44 last_Exec: The Excution time of last iteration just before the display update
45 Abs_Min: Absolute Minimum Excution time since the program started or statistics were reset
46 Abs_Max: Absolute Maximum Excution time since the program started or statistics were reset
47 tmp: Cumulative value calcualted by the dummy function
48 Interval: Time interval between the display updates in Core Cycles
49 Sample No: Sample number
51 Inst_Min Inst_Max Inst_jitter last_Exec Abs_min Abs_max tmp Interval Sample No
52 160022 171330 11308 160022 160022 171330 2538733568 3204142750 1
53 160022 167294 7272 160026 160022 171330 328335360 3203873548 2
54 160022 167560 7538 160026 160022 171330 2412904448 3203878736 3
55 160022 169000 8978 160024 160022 171330 202506240 3203864588 4
56 160022 166572 6550 160026 160022 171330 2287075328 3203866224 5
57 160022 167460 7438 160026 160022 171330 76677120 3203854632 6
58 160022 168134 8112 160024 160022 171330 2161246208 3203874674 7
59 160022 169094 9072 160022 160022 171330 4245815296 3203878798 8
60 160022 172460 12438 160024 160022 172460 2035417088 3204112010 9
61 160022 167862 7840 160030 160022 172460 4119986176 3203856800 10
62 160022 168398 8376 160024 160022 172460 1909587968 3203854192 11
63 160022 167548 7526 160024 160022 172460 3994157056 3203847442 12
64 160022 167562 7540 160026 160022 172460 1783758848 3203862936 13
65 160022 167604 7582 160024 160022 172460 3868327936 3203859346 14
66 160022 168262 8240 160024 160022 172460 1657929728 3203851120 15
67 160022 169700 9678 160024 160022 172460 3742498816 3203877690 16
68 160022 170476 10454 160026 160022 172460 1532100608 3204088480 17
69 160022 167798 7776 160024 160022 172460 3616669696 3203862072 18
70 160022 166540 6518 160024 160022 172460 1406271488 3203836904 19
71 160022 167516 7494 160024 160022 172460 3490840576 3203848120 20
79 $ sudo /home/testuser/mlc --bandwidth_matrix
80 Intel(R) Memory Latency Checker - v3.5
81 Command line parameters: --bandwidth_matrix
83 Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
84 Measuring Memory Bandwidths between nodes within system
85 Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
86 Using all the threads from each core if Hyper-threading is enabled
87 Using Read-only traffic type
95 $ sudo /home/testuser/mlc --peak_injection_bandwidth
96 Intel(R) Memory Latency Checker - v3.5
97 Command line parameters: --peak_injection_bandwidth
99 Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
101 Measuring Peak Injection Memory Bandwidths for the system
102 Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
103 Using all the threads from each core if Hyper-threading is enabled
104 Using traffic with the following read-write ratios
106 3:1 Reads-Writes : 182141.9
107 2:1 Reads-Writes : 178615.7
108 1:1 Reads-Writes : 149911.3
109 Stream-triad like: 159533.6
113 $ sudo /home/testuser/mlc --max_bandwidth
114 Intel(R) Memory Latency Checker - v3.5
115 Command line parameters: --max_bandwidth
117 Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
119 Measuring Maximum Memory Bandwidths for the system
120 Will take several minutes to complete as multiple injection rates will be tried to get the best bandwidth
121 Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
122 Using all the threads from each core if Hyper-threading is enabled
123 Using traffic with the following read-write ratios
124 ALL Reads : 216875.73
125 3:1 Reads-Writes : 182615.14
126 2:1 Reads-Writes : 178745.67
127 1:1 Reads-Writes : 149485.27
128 Stream-triad like: 180057.87
136 $ sudo /home/testuser/mlc --latency_matrix
137 Intel(R) Memory Latency Checker - v3.5
138 Command line parameters: --latency_matrix
140 Using buffer size of 2000.000MB
141 Measuring idle latencies (in ns)...
149 $ sudo /home/testuser/mlc --idle_latency
150 Intel(R) Memory Latency Checker - v3.5
151 Command line parameters: --idle_latency
153 Using buffer size of 2000.000MB
154 Each iteration took 202.0 core clocks ( 80.8 ns)
158 $ sudo /home/testuser/mlc --loaded_latency
159 Intel(R) Memory Latency Checker - v3.5
160 Command line parameters: --loaded_latency
162 Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
164 Measuring Loaded Latencies for the system
165 Using all the threads from each core if Hyper-threading is enabled
166 Using Read-only traffic type
167 Inject Latency Bandwidth
169 ==========================
170 00000 282.66 215712.8
171 00002 282.14 215757.4
172 00008 280.21 215868.1
173 00015 279.20 216313.2
174 00050 275.25 216643.0
175 00100 227.05 215075.0
176 00200 121.92 160242.9
177 00300 101.21 111587.4
196 $ sudo /home/testuser/mlc --c2c_latency
197 Intel(R) Memory Latency Checker - v3.5
198 Command line parameters: --c2c_latency
200 Measuring cache-to-cache transfer latency (in ns)...
201 Local Socket L2->L2 HIT latency 53.7
202 Local Socket L2->L2 HITM latency 53.7
203 Remote Socket L2->L2 HITM latency (data address homed in writer socket)
208 Remote Socket L2->L2 HITM latency (data address homed in reader socket)
214 .. include:: ../introduction/test_environment_sut_meltspec_skx.rst