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2026-09-06 - 08:56
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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 rackbslot7.osadl.org (updated Sun Sep 06, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23167217014,112sleep223206-21fschecks_count19:05:152
23167217014,112sleep223206-21fschecks_count19:05:152
244849912157,45cyclictest13775-21latency_hist22:24:512
24466991182,25cyclictest32458-21/usr/sbin/munin21:10:160
24466991132,24cyclictest19462-21rm22:33:220
244669911154,47cyclictest0-21swapper/021:39:510
244669911154,47cyclictest0-21swapper/021:39:510
244669911052,51cyclictest0-21swapper/020:15:110
24466991103,6cyclictest0-21swapper/022:20:010
24466991103,24cyclictest28689-21ssh22:47:540
24466991103,24cyclictest28689-21ssh22:47:540
244669911011,89cyclictest0-21swapper/000:15:080
24484991093,28cyclictest27880-21seq19:17:552
24466991093,28cyclictest8566-21latency_hist21:24:510
24466991093,28cyclictest8566-21latency_hist21:24:510
24466991092,23cyclictest6513-21sh22:12:160
24484991083,49cyclictest5798-21taskset21:20:032
24484991083,49cyclictest5798-21taskset21:20:032
244669910851,50cyclictest0-21swapper/019:40:240
24466991083,29cyclictest19029-21/usr/sbin/munin20:30:210
244669910654,44cyclictest0-21swapper/021:55:070
24466991063,74cyclictest10026-21apt-get23:10:070
24466991063,74cyclictest10026-21apt-get23:10:070
24466991062,25cyclictest343-21runrttasks23:34:110
24466991053,29cyclictest8745-21ssh23:59:480
24466991053,23cyclictest23723-21ssh00:22:530
24466991053,21cyclictest25629-21ssh22:43:040
24466991052,23cyclictest10204-21ssh21:25:570
24466991044,87cyclictest16863-21apt-get20:25:030
24484991033,29cyclictest32692-21taskset19:32:322
24484991033,29cyclictest32692-21taskset19:32:322
24466991034,76cyclictest30247-21apt-get21:05:030
24466991033,6cyclictest0-21swapper/023:39:580
244669910333,60cyclictest0-21swapper/022:15:250
24466991032,30cyclictest359-21snmpd00:26:590
24466991032,30cyclictest359-21snmpd00:26:590
24466991032,24cyclictest18247-21ssh21:39:550
244669910268,22cyclictest28329-21latency_hist20:59:520
244669910247,48cyclictest27882-21/usr/sbin/munin00:30:150
244669910246,49cyclictest0-21swapper/023:05:120
244669910244,50cyclictest24939-21apt-key20:49:520
244669910244,50cyclictest24939-21apt-key20:49:520
244669910244,50cyclictest0-21swapper/000:05:240
24466991023,23cyclictest20446-21sh23:25:270
24484991019,68cyclictest18565-21apt-get00:15:082
24484991012,29cyclictest11027-21sh00:02:432
244669910148,45cyclictest0-21swapper/020:39:490
244669910148,45cyclictest0-21swapper/020:39:490
24466991012,24cyclictest27204-21ssh21:54:200
24466991003,7cyclictest0-21swapper/019:10:010
24466991003,22cyclictest4026-21ssh23:51:170
24466991002,26cyclictest3791-21ssh21:15:370
24484999976,13cyclictest0-21swapper/220:09:502
24484999976,13cyclictest0-21swapper/220:09:502
2448499993,50cyclictest7858-21ssh22:15:042
2446699993,7cyclictest0-21swapper/022:50:060
24466999928,48cyclictest181rcu_preempt22:55:260
2446699992,28cyclictest14457-21sh23:16:030
2446699992,22cyclictest478-21ssh00:37:430
2446699992,22cyclictest478-21ssh00:37:430
2446699984,8cyclictest0-21swapper/000:00:010
2446699983,22cyclictest4805-21ssh23:00:420
2446699983,22cyclictest14049-21sh21:32:490
2446699983,21cyclictest3468-21ssh22:07:280
2446699982,22cyclictest390-21ssh22:02:370
2446699982,22cyclictest390-21ssh22:02:370
2379629812,60sleep123890-21cat19:05:351
2379629812,60sleep123890-21cat19:05:351
24484999771,13cyclictest0-21swapper/220:34:522
24484999750,40cyclictest31591-21diskmemload23:35:002
2448499973,68cyclictest5954-21ssh23:55:042
2448499964,26cyclictest31591-21diskmemload23:42:322
2446699963,7cyclictest0-21swapper/000:10:020
24466999632,57cyclictest0-21swapper/023:45:000
24466999632,57cyclictest0-21swapper/023:45:000
2446699962,24cyclictest5245-21taskset19:49:280
24484999568,15cyclictest0-21swapper/221:48:022
2446699953,22cyclictest13140-21runrttasks20:12:190
24484999457,28cyclictest12395-21ssh21:30:162
2448499943,28cyclictest30475-21ntp_states19:25:202
2448499942,30cyclictest12365-21sh23:13:422
2448499942,30cyclictest12365-21sh23:13:422
2448499942,27cyclictest26064-21sh00:25:532
2448499942,27cyclictest26064-21sh00:25:532
24466999440,43cyclictest24396-21kworker/u19:3+events_unbound20:04:530
24466999440,43cyclictest24396-21kworker/u19:3+events_unbound20:04:530
2446699943,6cyclictest0-21swapper/020:00:020
2446699943,6cyclictest0-21swapper/020:00:020
2446699942,71cyclictest20535-21cstates22:35:080
2446699942,71cyclictest20535-21cstates22:35:080
2448499933,23cyclictest1358-21sort22:04:512
2448499933,23cyclictest1358-21sort22:04:512
2446699934,8cyclictest0-21swapper/019:55:040
2446699933,7cyclictest0-21swapper/021:00:000
24466999329,56cyclictest0-21swapper/019:25:090
230712938,61sleep023123-21expr19:05:090
230712938,61sleep023123-21expr19:05:090
2446699923,75cyclictest21705-21apt-get20:40:000
2446699923,26cyclictest25227-21apt-get20:50:440
2446699922,21cyclictest22598-21sh21:45:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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