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2026-01-02 - 17:49
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Fri Jan 02, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153372312286,17sleep10-21swapper/107:05:331
154402274242,21sleep30-21swapper/307:06:533
155532266237,19sleep20-21swapper/207:08:212
154722260227,22sleep00-21swapper/007:07:170
38302730,0sleep30-21swapper/310:39:583
83362700,0sleep10-21swapper/111:55:161
235272620,0sleep30-21swapper/310:32:103
62552610,0sleep30-21swapper/311:17:383
264062590,0sleep20-21swapper/209:39:102
298322580,0sleep20-21swapper/207:35:232
149722560,0sleep20-21swapper/211:22:342
153122530,0sleep00-21swapper/012:35:240
294962430,0sleep30-21swapper/308:45:223
212952240,0sleep00-21swapper/010:49:520
156642190,0sleep00-21swapper/010:27:510
315622140,0sleep10-21swapper/111:31:351
261662130,0sleep00-21swapper/009:56:430
209352130,0sleep20-21swapper/211:44:292
177382130,0sleep2271rcuc/209:15:212
114062120,0sleep10-21swapper/109:30:161
182282110,0sleep00-21swapper/011:24:530
15808991110,1cyclictest34-21ksoftirqd/307:40:023
1579599119,1cyclictest11454-21dump-pmu-power08:10:010
1580599104,1cyclictest4008-21cron11:35:012
158059993,2cyclictest658-21snmpd12:23:112
158059993,1cyclictest0-21swapper/211:27:522
157959997,2cyclictest12-21ksoftirqd/010:05:000
8171280,0sleep30-21swapper/310:41:473
158089987,1cyclictest34-21ksoftirqd/311:45:003
158089986,1cyclictest0-21swapper/312:35:063
158059982,2cyclictest658-21snmpd11:50:292
158059982,1cyclictest0-21swapper/210:06:132
13345280,0sleep10-21swapper/109:50:121
9521270,0sleep30-21swapper/311:55:353
2056270,0sleep00-21swapper/010:38:430
158089973,3cyclictest658-21snmpd10:50:193
158089973,3cyclictest504-21dbus-daemon11:54:113
158089973,3cyclictest19761-21gltestperf09:35:133
158059976,1cyclictest28-21ksoftirqd/210:50:012
158059974,2cyclictest275-21systemd-journal10:22:272
158059973,3cyclictest658-21snmpd12:00:562
158059973,3cyclictest504-21dbus-daemon09:55:192
158059971,3cyclictest947-21perf12:09:592
158059970,1cyclictest0-21swapper/212:17:452
158009973,3cyclictest658-21snmpd11:06:211
158009973,3cyclictest504-21dbus-daemon09:55:021
158009973,3cyclictest275-21systemd-journal09:22:391
158009971,3cyclictest945-21basename12:09:591
158009970,4cyclictest23414-21perf07:25:011
157959976,1cyclictest8177-21ssh09:28:500
157959973,3cyclictest275-21systemd-journal08:29:170
11872270,0sleep10-21swapper/110:07:051
7223260,0sleep20-21swapper/209:10:122
158089966,0cyclictest0-21swapper/312:05:323
158089966,0cyclictest0-21swapper/311:32:193
158089966,0cyclictest0-21swapper/310:08:303
158089964,1cyclictest34-21ksoftirqd/308:40:013
158089964,1cyclictest22396-21ntp_states07:20:173
158089964,1cyclictest17816-21users11:05:213
158089963,2cyclictest658-21snmpd11:39:373
158089963,2cyclictest658-21snmpd10:16:273
158089963,2cyclictest658-21snmpd08:50:013
158089963,2cyclictest4672-21grep12:30:113
158089963,2cyclictest34-21ksoftirqd/308:25:013
158089963,2cyclictest28872-21expr12:25:153
158089963,2cyclictest275-21systemd-journal10:45:413
158089963,2cyclictest275-21systemd-journal07:45:573
158089963,2cyclictest23105-21ssh12:21:523
158089963,2cyclictest15641-21ssh11:23:033
158089963,2cyclictest12015-21sh09:12:303
158089963,1cyclictest0-21swapper/310:03:213
158089962,3cyclictest658-21snmpd11:47:053
158089962,3cyclictest658-21snmpd11:29:373
158089962,3cyclictest658-21snmpd11:10:463
158089962,3cyclictest658-21snmpd09:46:133
158089962,3cyclictest658-21snmpd09:41:243
158089962,3cyclictest658-21snmpd09:41:243
158089962,3cyclictest658-21snmpd09:34:213
158089962,3cyclictest658-21snmpd09:20:393
158089962,3cyclictest658-21snmpd09:07:563
158089962,3cyclictest658-21snmpd09:03:053
158089962,3cyclictest658-21snmpd08:41:523
158089962,3cyclictest658-21snmpd07:53:443
158089962,3cyclictest658-21snmpd07:32:393
158089962,3cyclictest504-21dbus-daemon09:30:013
158089962,3cyclictest31423-21cat07:40:153
158089962,3cyclictest31423-21cat07:40:153
158089962,3cyclictest275-21systemd-journal10:14:373
158089962,3cyclictest16672-21cut08:20:163
158089962,3cyclictest10593-21sh11:01:293
158089962,1cyclictest0-21swapper/312:18:013
158089962,1cyclictest0-21swapper/310:24:373
158089961,2cyclictest10275-21kworker/u8:012:00:223
158089960,6cyclictest0-21swapper/307:15:023
158089960,2cyclictest10919-21fschecks_time10:25:123
158089960,0cyclictest2622-21ssh10:57:063
158089960,0cyclictest0-21swapper/312:10:133
158089960,0cyclictest0-21swapper/309:55:083
158059963,2cyclictest658-21snmpd09:45:412
158059963,2cyclictest5210-21cut12:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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