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2024-11-22 - 10:58
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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 rack0slot4.osadl.org (updated Fri Nov 22, 2024 00:46:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17753002359312,36sleep150-21swapper/1519:07:587
17752682358312,35sleep20-21swapper/219:07:298
17754032357313,14sleep60-21swapper/619:09:2512
17753902357310,15sleep100-21swapper/1019:09:132
17752862355332,12sleep10-21swapper/119:07:441
17753102352326,15sleep80-21swapper/819:08:0814
17751942351306,34sleep90-21swapper/919:06:3215
17753652345320,15sleep30-21swapper/319:08:519
17754452344319,15sleep40-21swapper/419:09:5610
17753912344319,15sleep110-21swapper/1119:09:153
17753252343319,14sleep50-21swapper/519:08:2111
17754152342316,16sleep120-21swapper/1219:09:324
17753932342314,16sleep130-21swapper/1319:09:175
17751512342317,14sleep70-21swapper/719:05:5813
17752572341316,15sleep140-21swapper/1419:07:256
17751612338313,15sleep00-21swapper/019:06:070
177586999268267,1cyclictest1781525-21nodedev-init19:15:017
177584999247246,1cyclictest1976712-21nodedev-init23:00:1615
177584399202202,0cyclictest0-21swapper/719:15:0213
1775819991130,112cyclictest1963789-21daemon-init22:45:170
177582999107105,2cyclictest0-21swapper/322:45:179
177583599106101,4cyclictest1963839-21nodedev-init22:45:1711
177582399990,99cyclictest0-21swapper/119:40:211
1775823999897,1cyclictest0-21swapper/123:00:161
1775843999695,1cyclictest1946696-21nodedev-init22:25:1713
1775825999391,1cyclictest1878114-21nodedev-init21:05:188
1775845999291,1cyclictest1972444-21nodedev-init22:55:1514
1775819999190,1cyclictest0-21swapper/023:40:180
1775823999089,1cyclictest2020645-21nodedev-init23:55:171
1775863998988,1cyclictest0-21swapper/1320:40:185
1775823998886,1cyclictest0-21swapper/119:20:181
1775865998786,1cyclictest1890969-21nodedev-init21:20:186
1775843998685,1cyclictest0-21swapper/723:50:1513
1775855998482,1cyclictest0-21swapper/1122:10:193
1775835998180,1cyclictest1925258-21nodedev-init22:00:1811
1775869997876,1cyclictest0-21swapper/1519:10:187
1775853996967,1cyclictest0-21swapper/1021:05:172
1775823996766,1cyclictest0-21swapper/120:00:201
1775839996665,1cyclictest1843799-21nodedev-init20:25:1512
1775845996463,1cyclictest0-21swapper/820:35:1714
1775819996463,1cyclictest2042122-21nodedev-init00:20:180
1775839996160,1cyclictest1813786-21nodedev-init19:50:1712
1775829996059,1cyclictest0-21swapper/300:10:249
1775823996059,1cyclictest0-21swapper/122:35:171
1775829995756,1cyclictest0-21swapper/321:10:189
1775839995150,1cyclictest0-21swapper/620:20:1712
1775849995049,1cyclictest1805220-21nodedev-init19:40:2115
1775863994847,1cyclictest0-21swapper/1321:00:185
1775835994645,1cyclictest0-21swapper/500:00:1711
177584599459,11cyclictest0-21swapper/822:33:3514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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