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2026-06-23 - 11:01
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Tue Jun 23, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20412993331,2cyclictest0-21swapper/121:00:351
20412993322,11cyclictest0-21swapper/123:39:001
20412993230,2cyclictest0-21swapper/120:43:091
20412993230,2cyclictest0-21swapper/100:27:191
20412993230,0cyclictest0-21swapper/122:29:431
20412993130,0cyclictest0-21swapper/121:06:421
20412993029,1cyclictest15157-21kworker/1:120:36:511
20412993029,0cyclictest0-21swapper/122:21:101
20412993028,2cyclictest0-21swapper/100:33:061
20412992929,0cyclictest21-21ksoftirqd/120:54:491
20412992928,0cyclictest0-21swapper/123:53:181
20412992928,0cyclictest0-21swapper/123:24:151
20412992919,10cyclictest0-21swapper/122:53:251
20412992818,9cyclictest15157-21kworker/1:121:54:201
20412992818,10cyclictest0-21swapper/120:31:301
20412992817,0cyclictest0-21swapper/120:22:491
20412992718,9cyclictest0-21swapper/123:25:411
20412992718,0cyclictest0-21swapper/120:17:311
20408992624,1cyclictest1100-21snmpd21:59:080
20415992424,0cyclictest0-21swapper/221:00:082
2040899248,15cyclictest9-21ksoftirqd/022:15:230
2041299235,2cyclictest0-21swapper/120:58:411
2041299230,22cyclictest0-21swapper/120:46:321
2040899230,5cyclictest0-21swapper/020:25:320
2040899230,5cyclictest0-21swapper/000:17:190
2040899230,1cyclictest0-21swapper/020:04:240
20415992222,0cyclictest0-21swapper/222:16:282
20415992220,1cyclictest455-21plymouthd23:50:312
20415992121,0cyclictest0-21swapper/200:39:252
20408992115,3cyclictest0-21swapper/023:36:330
2041599203,16cyclictest12130-21timerandwakeup20:45:222
20415992020,0cyclictest0-21swapper/220:38:512
2041299204,16cyclictest0-21swapper/123:43:191
2041299204,15cyclictest0-21swapper/121:39:041
20412992016,1cyclictest111rcu_preempt19:32:311
2041599193,15cyclictest0-21swapper/200:26:352
20415991919,0cyclictest0-21swapper/200:19:452
20415991917,1cyclictest19411-21apache_volume22:55:112
20415991916,2cyclictest993-21dbus-daemon19:55:022
20415991913,5cyclictest0-21swapper/220:19:342
2041599190,2cyclictest3987-21H222:10:212
2041599190,19cyclictest0-21swapper/222:26:292
2041599190,18cyclictest843-21systemd-network21:11:242
2041599190,18cyclictest843-21systemd-network21:11:232
2041599190,0cyclictest0-21swapper/221:21:052
2041299194,0cyclictest0-21swapper/122:49:361
20412991919,0cyclictest0-21swapper/100:10:341
2041299190,4cyclictest25415-21grep20:15:001
2041299190,16cyclictest3983-21H222:10:211
2041299190,16cyclictest3976-21H222:10:211
2040899192,16cyclictest19843-21nfsd423:50:170
2040899192,16cyclictest0-21swapper/020:37:060
20408991917,1cyclictest0-21swapper/021:49:410
20408991917,1cyclictest0-21swapper/000:00:290
20408991916,2cyclictest16629-21http_loadtime23:45:150
20408991915,3cyclictest26443-21fschecks_count20:15:130
2040899190,2cyclictest3985-21H222:10:210
2040899190,16cyclictest3989-21H222:10:210
2040899190,16cyclictest3989-21H222:10:210
2040899190,0cyclictest0-21swapper/021:20:170
2041599183,9cyclictest10868-21/usr/sbin/munin19:50:012
2041599182,15cyclictest0-21swapper/200:08:242
20415991818,0cyclictest0-21swapper/221:42:532
20415991816,1cyclictest14563-21ntp_offset23:40:192
20415991816,1cyclictest0-21swapper/223:20:022
20415991815,2cyclictest4880-21/usr/sbin/munin00:20:192
20415991815,2cyclictest1100-21snmpd21:32:282
20415991814,3cyclictest3979-21H222:10:212
20415991814,3cyclictest32210-21irqstats20:25:182
20415991813,1cyclictest0-21swapper/222:02:582
20415991813,1cyclictest0-21swapper/222:02:572
2041599181,2cyclictest25033-21cut19:15:182
2041599180,3cyclictest843-21systemd-network21:09:212
2041599180,2cyclictest3976-21H222:10:212
2041599180,17cyclictest3979-21H222:10:212
2041599180,16cyclictest3985-21H222:10:212
2041599180,15cyclictest4035-21H222:10:212
2041599180,0cyclictest0-21swapper/200:02:182
2041299182,15cyclictest0-21swapper/122:00:131
2041299182,15cyclictest0-21swapper/122:00:131
20412991816,1cyclictest3986-21H222:10:211
20412991816,1cyclictest21-21ksoftirqd/100:07:591
20412991815,2cyclictest25739-21ps21:10:211
20412991815,2cyclictest25739-21ps21:10:211
20412991815,2cyclictest10056-21netstat21:40:171
20412991814,3cyclictest31792-21runrttasks21:21:351
2041299181,1cyclictest3985-21H222:10:211
2041299181,16cyclictest27010-21/usr/sbin/munin21:15:111
2041299180,2cyclictest3983-21H222:10:211
2041299180,17cyclictest4035-21H222:10:211
2041299180,17cyclictest3991-21H222:10:211
20408991817,1cyclictest22488-21kworker/0:122:39:390
20408991816,1cyclictest0-21swapper/022:21:280
20408991815,2cyclictest12612-21missed_timers00:35:180
20408991814,3cyclictest3991-21H222:10:210
20408991814,3cyclictest16634-21cron21:55:000
2040899181,1cyclictest0-21swapper/020:40:490
2040899180,2cyclictest4035-21H222:10:210
2040899180,2cyclictest3991-21H222:10:210
2040899180,2cyclictest3989-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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