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2026-03-22 - 19:00
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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 rackdslot1.osadl.org (updated Sun Mar 22, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2469099740,32cyclictest19862-21run-parts09:15:241
2469099730,29cyclictest1301-21snmpd11:00:241
2469099720,32cyclictest2802-21seq09:50:131
2469099720,32cyclictest18044-21taskset09:11:521
2469099710,29cyclictest759-21timerwakeupswit07:25:301
2469099670,30cyclictest11122-21taskset08:59:221
2469099660,38cyclictest7209-21taskset12:19:221
2469099660,31cyclictest8527-21seq08:50:361
2469099660,31cyclictest22974-21seq10:31:141
2469099660,31cyclictest13941-21seq12:32:051
2469099660,30cyclictest16229-21seq12:36:581
2469099660,30cyclictest10737-21seq07:48:591
2469099660,24cyclictest24331-21irqrtprio10:35:191
24689996612,10cyclictest9579-21date10:05:010
2469099650,30cyclictest29392-21taskset08:28:401
2469099650,30cyclictest13843-21seq10:12:121
2469099650,29cyclictest13592-21seq09:03:401
2468999659,17cyclictest13331-21latency_hist07:55:000
24689996511,16cyclictest421-21cut07:25:260
2469099640,31cyclictest17398-21seq08:00:551
2469099640,30cyclictest2659-21taskset12:09:531
2469099640,29cyclictest11529-21taskset11:17:461
2469099640,26cyclictest26897-21ssh09:30:251
2469099630,30cyclictest25057-21seq09:28:031
2468999639,17cyclictest31044-21fschecks_time12:00:150
24689996311,16cyclictest20613-21chrt11:36:080
2469099620,30cyclictest25469-21seq11:46:271
2469099620,30cyclictest13725-21taskset11:21:111
2469099620,25cyclictest10822-21ntpq10:05:211
24692996119,5cyclictest41-21ksoftirqd/307:45:013
24691996127,4cyclictest33-21ksoftirqd/208:30:182
2468999618,17cyclictest28595-21cat07:15:280
2468999617,10cyclictest0-21swapper/010:40:160
24689996111,15cyclictest13390-21switchtime10:10:260
2469099600,29cyclictest32579-21seq12:03:201
2469099600,29cyclictest18545-21seq10:23:191
2469099600,24cyclictest23265-21basename11:45:001
2468999607,16cyclictest0-21swapper/007:20:130
24689996017,9cyclictest26447-21taskset07:11:000
24689996017,11cyclictest24830-21taskset08:19:540
24689996017,11cyclictest24830-21taskset08:19:540
24689996012,11cyclictest13088-21ssh09:00:250
24689996010,15cyclictest5695-21chrt07:36:180
24691995928,7cyclictest33-21ksoftirqd/210:05:132
24691995927,4cyclictest33-21ksoftirqd/210:00:232
2469099590,28cyclictest31704-21ls09:40:261
2469099590,28cyclictest18323-21taskset11:31:141
2468999597,10cyclictest2653-21grep09:50:130
24689995913,16cyclictest22508-21grep10:30:240
2468999587,11cyclictest8445-21awk11:10:220
24689995818,7cyclictest29759-21apt-get08:30:110
24689995817,9cyclictest30291-21taskset11:58:440
24689995815,11cyclictest8482-21taskset07:44:320
24689995812,17cyclictest27841-21/usr/sbin/munin08:25:160
134491580,3ptp4l0-21swapper/110:45:271
24691995714,5cyclictest33-21ksoftirqd/210:50:252
24691995712,6cyclictest33-21ksoftirqd/207:25:212
2468999579,14cyclictest28919-21ntpq09:35:220
24689995718,10cyclictest2551-21taskset12:08:370
24689995717,9cyclictest7016-21seq11:08:520
24689995715,9cyclictest31389-21processes09:40:230
24689995715,11cyclictest32369-21runrttasks10:52:520
24689995714,14cyclictest1317-21runrttasks09:45:440
24689995713,15cyclictest28632-21perl10:45:190
24689995711,16cyclictest18922-21/usr/sbin/munin10:25:240
134491570,3ptp4l0-21swapper/309:35:153
24692995617,6cyclictest41-21ksoftirqd/308:30:203
2469199566,28cyclictest0-21swapper/209:05:202
24691995615,4cyclictest33-21ksoftirqd/207:20:132
2469099562,23cyclictest0-21swapper/107:35:151
2469099561,26cyclictest19498-21sed08:05:271
2469099561,19cyclictest7043-21/usr/sbin/munin07:40:191
2469099560,32cyclictest15193-21seq07:57:221
2468999568,16cyclictest13470-21mailstats12:30:240
2468999568,10cyclictest15013-21awk07:55:280
24689995618,10cyclictest22970-21taskset11:41:410
24689995617,9cyclictest18208-21taskset09:13:580
24689995616,11cyclictest27915-21taskset11:53:240
24689995611,11cyclictest9604-21latency_hist12:24:590
24689995610,8cyclictest16790-21df11:30:130
134491560,8ptp4l23787-21awk07:05:251
24691995528,4cyclictest33-21ksoftirqd/210:20:212
24691995523,3cyclictest33-21ksoftirqd/210:35:222
24691995517,7cyclictest33-21ksoftirqd/211:45:142
24689995516,9cyclictest16134-21taskset12:35:440
24689995516,11cyclictest22781-21runrttasks09:23:260
24689995515,9cyclictest2156-21taskset10:56:180
24689995514,10cyclictest1317-21runrttasks11:22:200
24689995513,11cyclictest1664-21taskset08:36:550
24689995511,7cyclictest2596-21meminfo07:30:190
2469299545,9cyclictest41-21ksoftirqd/308:35:253
2469299545,7cyclictest41-21ksoftirqd/307:55:233
24692995415,5cyclictest41-21ksoftirqd/312:05:263
2469199545,8cyclictest33-21ksoftirqd/208:20:112
24691995412,6cyclictest33-21ksoftirqd/207:35:172
24689995416,10cyclictest6994-21runrttasks09:58:000
24689995413,10cyclictest1317-21runrttasks09:08:360
2468999540,16cyclictest0-21swapper/010:35:170
2469199535,8cyclictest33-21ksoftirqd/211:00:152
2469199534,8cyclictest33-21ksoftirqd/210:10:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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