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2024-04-25 - 22:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot6s.osadl.org (updated Thu Apr 25, 2024 00:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3688189992491824908,9cyclictest16-1pr/ttyS021:32:192
3688189992170821697,10cyclictest16-1pr/ttyS000:10:002
368818799182550,18254cyclictest3798178-21kworker/9:2+rcu_gp21:32:1919
36881989966540,6652cyclictest3801551-21kworker/u40:6+flush-259:021:31:355
36881589929140,2912cyclictest3776917-21kworker/u40:5+flush-259:021:31:260
3688181992650111,2538cyclictest146-40khugepaged19:30:2417
368817399249184,2406cyclictest146-40khugepaged19:40:1415
36882049923570,2357cyclictest160-21kswapd000:22:257
3688168992333177,2156cyclictest146-40khugepaged21:10:2113
3688189992300137,2162cyclictest146-40khugepaged00:21:332
3688168992270125,2144cyclictest146-40khugepaged22:08:4313
3688161992238138,2099cyclictest146-40khugepaged20:15:071
3688196992218137,2080cyclictest146-40khugepaged21:30:374
368819299220478,2125cyclictest146-40khugepaged20:51:263
3688187992201136,2064cyclictest146-40khugepaged21:45:2219
36881619921891,2187cyclictest146-40khugepaged00:05:351
368816899216775,2091cyclictest146-40khugepaged21:06:5013
3688166992156158,1997cyclictest146-40khugepaged21:25:4212
368820299213745,2091cyclictest146-40khugepaged23:04:086
3688173992113155,1957cyclictest146-40khugepaged19:10:4515
36881689921075,2101cyclictest146-40khugepaged21:35:3213
368815899209238,2053cyclictest146-40khugepaged20:55:160
3688177992022166,1855cyclictest144-21kcompactd022:25:1916
36882139920190,2018cyclictest3970820-21conntrack00:00:1810
368816899201925,1993cyclictest146-40khugepaged22:13:3813
36882109919770,1976cyclictest3758197-21conntrack20:40:139
3688192991977212,1762cyclictest146-40khugepaged20:06:023
3688192991977212,1762cyclictest146-40khugepaged20:06:023
368819299196121,1939cyclictest146-40khugepaged20:36:113
368818799194544,1900cyclictest146-40khugepaged21:50:1719
36881689919360,1935cyclictest4000442-21conntrack00:35:1613
36882159919330,1932cyclictest3886526-21conntrack22:20:1211
3688158991929104,1824cyclictest146-40khugepaged23:45:550
36881829919250,1924cyclictest3702089-21conntrack19:30:1218
36881589919216,1914cyclictest146-40khugepaged23:20:070
36882159919160,1915cyclictest3711832-21conntrack19:45:1511
368817399191164,1847cyclictest146-40khugepaged22:05:0115
3688210991909189,1719cyclictest146-40khugepaged20:21:169
36881819919070,1906cyclictest3791938-21conntrack21:20:1317
36881779919070,1906cyclictest3958129-21conntrack23:45:1516
36881819919020,1901cyclictest3775088-21conntrack21:00:1717
368818199190138,1862cyclictest146-40khugepaged19:23:0217
36881819919010,1900cyclictest3915959-21conntrack22:55:1417
36882029918980,1897cyclictest3745559-21conntrack20:25:146
36882109918970,1896cyclictest3787729-21conntrack21:15:189
36881879918940,1893cyclictest3696561-21conntrack19:20:1119
36881819918940,1893cyclictest3728717-21conntrack20:05:1817
36881819918940,1893cyclictest3728717-21conntrack20:05:1817
36881929918920,1891cyclictest3878109-21conntrack22:10:143
368818199188935,1853cyclictest146-40khugepaged19:59:5417
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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