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Haswell
~~~~~~~
Following sections include sample calibration data measured on t1-sut1
server running in one of the Intel Xeon Haswell testbeds as specified in
`FD.io CSIT Testbeds - Xeon Haswell`_.
Calibration data obtained from all other servers in Haswell testbeds
shows the same or similar values.
Linux cmdline
^^^^^^^^^^^^^
::
$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.15.0-72-generic root=UUID=c59ae603-8076-41f4-bb5d-bc3fc8dd3ea1 ro isolcpus=1-17,19-35 nohz_full=1-17,19-35 rcu_nocbs=1-17,19-35 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=tty0console=ttyS0,115200n8
Linux uname
^^^^^^^^^^^
::
$ uname -a
Linux t1-tg1 4.15.0-72-generic #81-Ubuntu SMP Tue Nov 26 12:20:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
System-level Core Jitter
^^^^^^^^^^^^^^^^^^^^^^^^
::
$ sudo taskset -c 3 /home/testuser/pma_tools/jitter/jitter -i 30
Linux Jitter testing program version 1.8
Iterations=30
The pragram will execute a dummy function 80000 times
Display is updated every 20000 displayUpdate intervals
Timings are in CPU Core cycles
Inst_Min: Minimum Excution time during the display update interval(default is ~1 second)
Inst_Max: Maximum Excution time during the display update interval(default is ~1 second)
Inst_jitter: Jitter in the Excution time during rhe display update interval. This is the value of interest
last_Exec: The Excution time of last iteration just before the display update
Abs_Min: Absolute Minimum Excution time since the program started or statistics were reset
Abs_Max: Absolute Maximum Excution time since the program started or statistics were reset
tmp: Cumulative value calcualted by the dummy function
Interval: Time interval between the display updates in Core Cycles
Sample No: Sample number
Inst_Min Inst_Max Inst_jitter last_Exec Abs_min Abs_max tmp Interval Sample No
160024 172636 12612 160028 160024 172636 1573060608 3205463144 1
160024 188236 28212 160028 160024 188236 958595072 3205500844 2
160024 185676 25652 160028 160024 188236 344129536 3205485976 3
160024 172608 12584 160024 160024 188236 4024631296 3205472740 4
160024 179260 19236 160028 160024 188236 3410165760 3205502164 5
160024 172432 12408 160024 160024 188236 2795700224 3205452036 6
160024 178820 18796 160024 160024 188236 2181234688 3205455408 7
160024 172512 12488 160028 160024 188236 1566769152 3205461528 8
160024 172636 12612 160028 160024 188236 952303616 3205478820 9
160024 173676 13652 160028 160024 188236 337838080 3205470412 10
160024 178776 18752 160028 160024 188236 4018339840 3205481472 11
160024 172788 12764 160028 160024 188236 3403874304 3205492336 12
160024 174616 14592 160028 160024 188236 2789408768 3205474904 13
160024 174440 14416 160028 160024 188236 2174943232 3205479448 14
160024 178748 18724 160024 160024 188236 1560477696 3205482668 15
160024 172588 12564 169404 160024 188236 946012160 3205510496 16
160024 172636 12612 160024 160024 188236 331546624 3205472204 17
160024 172480 12456 160024 160024 188236 4012048384 3205455864 18
160024 172740 12716 160028 160024 188236 3397582848 3205464932 19
160024 179200 19176 160028 160024 188236 2783117312 3205476012 20
160024 172480 12456 160028 160024 188236 2168651776 3205465632 21
160024 172728 12704 160024 160024 188236 1554186240 3205497204 22
160024 172620 12596 160028 160024 188236 939720704 3205466972 23
160024 172640 12616 160028 160024 188236 325255168 3205471216 24
160024 172484 12460 160028 160024 188236 4005756928 3205467388 25
160024 172636 12612 160028 160024 188236 3391291392 3205482748 26
160024 179056 19032 160024 160024 188236 2776825856 3205467152 27
160024 172672 12648 160024 160024 188236 2162360320 3205483268 28
160024 176932 16908 160024 160024 188236 1547894784 3205488536 29
160024 172452 12428 160028 160024 188236 933429248 3205440636 30
Memory Bandwidth
^^^^^^^^^^^^^^^^
::
$ sudo /home/testuser/mlc --bandwidth_matrix
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --bandwidth_matrix
Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
Measuring Memory Bandwidths between nodes within system
Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
Using all the threads from each core if Hyper-threading is enabled
Using Read-only traffic type
Numa node
Numa node 0 1
0 57935.5 30265.2
1 30284.6 58409.9
::
$ sudo /home/testuser/mlc --peak_injection_bandwidth
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --peak_injection_bandwidth
Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
Measuring Peak Injection Memory Bandwidths for the system
Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
Using all the threads from each core if Hyper-threading is enabled
Using traffic with the following read-write ratios
ALL Reads : 115762.2
3:1 Reads-Writes : 106242.2
2:1 Reads-Writes : 103031.8
1:1 Reads-Writes : 87943.7
Stream-triad like: 100048.4
::
$ sudo /home/testuser/mlc --max_bandwidth
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --max_bandwidth
Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
Measuring Maximum Memory Bandwidths for the system
Will take several minutes to complete as multiple injection rates will be tried to get the best bandwidth
Bandwidths are in MB/sec (1 MB/sec = 1,000,000 Bytes/sec)
Using all the threads from each core if Hyper-threading is enabled
Using traffic with the following read-write ratios
ALL Reads : 115782.41
3:1 Reads-Writes : 105965.78
2:1 Reads-Writes : 103162.38
1:1 Reads-Writes : 88255.82
Stream-triad like: 105608.10
Memory Latency
^^^^^^^^^^^^^^
::
$ sudo /home/testuser/mlc --latency_matrix
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --latency_matrix
Using buffer size of 200.000MB
Measuring idle latencies (in ns)...
Numa node
Numa node 0 1
0 101.0 132.0
1 141.2 98.8
::
$ sudo /home/testuser/mlc --idle_latency
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --idle_latency
Using buffer size of 200.000MB
Each iteration took 227.2 core clocks ( 99.0 ns)
::
$ sudo /home/testuser/mlc --loaded_latency
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --loaded_latency
Using buffer size of 100.000MB/thread for reads and an additional 100.000MB/thread for writes
Measuring Loaded Latencies for the system
Using all the threads from each core if Hyper-threading is enabled
Using Read-only traffic type
Inject Latency Bandwidth
Delay (ns) MB/sec
==========================
00000 294.08 115841.6
00002 294.27 115851.5
00008 293.67 115821.8
00015 278.92 115587.5
00050 246.80 113991.2
00100 206.86 104508.1
00200 123.72 72873.6
00300 113.35 52641.1
00400 108.89 41078.9
00500 108.11 33699.1
00700 106.19 24878.0
01000 104.75 17948.1
01300 103.72 14089.0
01700 102.95 11013.6
02500 102.25 7756.3
03500 101.81 5749.3
05000 101.46 4230.4
09000 101.05 2641.4
20000 100.77 1542.5
L1/L2/LLC Latency
^^^^^^^^^^^^^^^^^
::
$ sudo /home/testuser/mlc --c2c_latency
Intel(R) Memory Latency Checker - v3.5
Command line parameters: --c2c_latency
Measuring cache-to-cache transfer latency (in ns)...
Local Socket L2->L2 HIT latency 42.1
Local Socket L2->L2 HITM latency 47.0
Remote Socket L2->L2 HITM latency (data address homed in writer socket)
Reader Numa Node
Writer Numa Node 0 1
0 - 108.0
1 106.9 -
Remote Socket L2->L2 HITM latency (data address homed in reader socket)
Reader Numa Node
Writer Numa Node 0 1
0 - 107.7
1 106.6 -
.. include:: ../introduction/test_environment_sut_meltspec_hsw.rst
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