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Ice Lake
~~~~~~~~
Following sections include sample calibration data measured on
s71-t212-sut1 server running in one of the Intel Xeon Ice Lake testbeds as
specified in `FD.io CSIT testbeds - Xeon Ice Lake`_.
Calibration data obtained from all other servers in Ice Lake testbeds
shows the same or similar values.
Linux cmdline
^^^^^^^^^^^^^
::
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-5.4.0-65-generic root=UUID=3250758a-9bb6-48c8-9c36-ecb6a269223f ro audit=0 default_hugepagesz=2M hugepagesz=1G hugepages=32 hugepagesz=2M hugepages=32768 hpet=disable intel_idle.max_cstate=1 intel_iommu=on intel_pstate=disable iommu=pt isolcpus=1-31,33-63,65-95,97-127 mce=off nmi_watchdog=0 nohz_full=1-31,33-63,65-95,97-127 nosoftlockup numa_balancing=disable processor.max_cstate=1 rcu_nocbs=1-31,33-63,65-95,97-127 tsc=reliable console=ttyS0,115200n8 quiet
Linux uname
^^^^^^^^^^^
::
$ uname -a
Linux 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 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 1.9
Iterations=20
The pragram will execute a dummy function 80000 times
Display is updated every 20000 displayUpdate intervals
Thread affinity will be set to core_id:7
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
126082,133950,7868,126094,126082,133950,3829268480,2524167454,1
126082,134696,8614,126094,126082,134696,1778253824,2524273022,2
126082,136092,10010,126094,126082,136092,4022206464,2524203296,3
126082,135094,9012,126094,126082,136092,1971191808,2524274302,4
126082,136482,10400,126094,126082,136482,4215144448,2524318496,5
126082,134990,8908,126094,126082,136482,2164129792,2524155038,6
126082,134710,8628,126092,126082,136482,113115136,2524215228,7
126082,135080,8998,126092,126082,136482,2357067776,2524168906,8
126082,134470,8388,126094,126082,136482,306053120,2524163312,9
126082,135246,9164,126092,126082,136482,2550005760,2524394986,10
126082,132662,6580,126094,126082,136482,498991104,2524163156,11
126082,132954,6872,126094,126082,136482,2742943744,2524154386,12
126082,135340,9258,126092,126082,136482,691929088,2524222386,13
126082,133036,6954,126094,126082,136482,2935881728,2524150132,14
126082,137776,11694,126094,126082,137776,884867072,2524239346,15
126082,137850,11768,126094,126082,137850,3128819712,2524342944,16
126082,133000,6918,126094,126082,137850,1077805056,2524160062,17
126082,133332,7250,126094,126082,137850,3321757696,2524158804,18
126082,133234,7152,126092,126082,137850,1270743040,2524174400,19
126082,152552,26470,126094,126082,152552,3514695680,2524857280,20
.. include:: ../introduction/test_environment_sut_meltspec_icx.rst
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