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2025-09-18 - 15:03
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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 rackaslot8.osadl.org (updated Thu Sep 18, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212492304272,20sleep20-21swapper/207:06:282
212502274239,22sleep30-21swapper/307:06:293
211812274210,22sleep10-21swapper/107:05:351
212022265232,21sleep00-21swapper/007:05:500
149142610,0sleep20-21swapper/209:37:042
144342600,0sleep30-21swapper/310:25:073
293392580,0sleep10-21swapper/109:48:171
184652580,0sleep00-21swapper/009:40:160
137972570,0sleep00-21swapper/011:49:490
207882550,0sleep00-21swapper/009:15:560
285692540,0sleep10-21swapper/110:11:351
83552530,0sleep10-21swapper/111:24:591
213982150,0sleep00-21swapper/011:33:040
285832130,0sleep20-21swapper/211:16:112
21628991310,2cyclictest12-21ksoftirqd/012:00:000
199382130,0sleep20-21swapper/211:53:322
2162899129,2cyclictest12-21ksoftirqd/011:00:000
2162899129,2cyclictest12-21ksoftirqd/007:15:010
2162899118,2cyclictest12-21ksoftirqd/010:25:010
2162899108,2cyclictest12-21ksoftirqd/010:45:020
2162899107,2cyclictest12-21ksoftirqd/012:20:000
2162899107,2cyclictest12-21ksoftirqd/011:40:010
2162899107,2cyclictest12-21ksoftirqd/010:20:010
2162899107,2cyclictest12-21ksoftirqd/009:30:000
182572100,0sleep20-21swapper/212:34:522
216419994,3cyclictest508-21dbus-daemon08:34:223
216419994,3cyclictest19982-21systemd-journal09:01:283
216369994,3cyclictest19982-21systemd-journal07:57:392
216289998,1cyclictest131rcuc/012:30:010
216289998,1cyclictest131rcuc/012:30:000
216289997,2cyclictest12-21ksoftirqd/009:40:010
216289997,1cyclictest131rcuc/007:20:000
216289997,1cyclictest12-21ksoftirqd/008:10:000
216289997,1cyclictest12-21ksoftirqd/008:00:000
216289996,2cyclictest12-21ksoftirqd/010:15:010
216289996,2cyclictest12-21ksoftirqd/009:35:000
216289996,2cyclictest12-21ksoftirqd/009:15:000
16288290,0sleep10-21swapper/112:11:561
216419984,3cyclictest508-21dbus-daemon08:24:223
216419984,3cyclictest19982-21systemd-journal11:08:513
216419983,3cyclictest19982-21systemd-journal07:10:073
216369983,3cyclictest19982-21systemd-journal11:46:012
216369983,3cyclictest19982-21systemd-journal07:12:112
216369983,1cyclictest28-21ksoftirqd/212:25:132
216369983,1cyclictest28-21ksoftirqd/212:25:132
216339986,1cyclictest4851-21users11:00:191
216289987,1cyclictest12-21ksoftirqd/010:55:010
216289987,1cyclictest12-21ksoftirqd/008:45:020
216289987,1cyclictest12-21ksoftirqd/007:40:000
216289985,2cyclictest6087-21grep09:55:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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