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2026-07-19 - 03:36
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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 Jul 19, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211521560,6sleep2630699cyclictest20:30:172
2365421240,7sleep0630499cyclictest20:55:180
3013321220,5sleep30-21swapper/322:20:023
120142740,5sleep125-21ksoftirqd/120:30:161
6306996939,2cyclictest33-21ksoftirqd/200:00:132
6306996632,2cyclictest33-21ksoftirqd/220:45:242
134491650,3ptp4l0-21swapper/320:30:253
6306996229,3cyclictest33-21ksoftirqd/223:00:192
6306996226,6cyclictest33-21ksoftirqd/221:30:192
134491620,6ptp4l0-21swapper/019:10:000
6306996131,7cyclictest33-21ksoftirqd/219:55:002
6306996131,7cyclictest33-21ksoftirqd/219:55:002
6306996127,5cyclictest33-21ksoftirqd/222:54:592
6306996029,3cyclictest33-21ksoftirqd/222:30:212
6306996027,6cyclictest33-21ksoftirqd/223:10:122
6306996025,5cyclictest33-21ksoftirqd/221:40:152
6306995928,7cyclictest33-21ksoftirqd/223:20:202
6306995927,6cyclictest33-21ksoftirqd/200:20:202
6306995924,5cyclictest33-21ksoftirqd/222:44:592
6306995829,4cyclictest33-21ksoftirqd/222:45:222
6306995828,7cyclictest33-21ksoftirqd/220:00:012
6306995826,5cyclictest33-21ksoftirqd/220:15:212
6306995826,4cyclictest33-21ksoftirqd/220:10:162
134491580,4ptp4l0-21swapper/319:43:533
134491580,4ptp4l0-21swapper/300:10:233
134491580,3ptp4l3850-21ssh22:30:273
6306995727,7cyclictest33-21ksoftirqd/223:50:212
6306995725,5cyclictest33-21ksoftirqd/223:30:242
6306995725,5cyclictest33-21ksoftirqd/223:30:242
6306995629,8cyclictest33-21ksoftirqd/220:35:222
6306995626,5cyclictest33-21ksoftirqd/223:45:152
6306995626,4cyclictest33-21ksoftirqd/223:59:432
6306995626,4cyclictest33-21ksoftirqd/223:15:142
6306995624,4cyclictest33-21ksoftirqd/223:25:152
6306995624,4cyclictest33-21ksoftirqd/222:35:132
6306995622,5cyclictest33-21ksoftirqd/221:25:002
134491560,4ptp4l0-21swapper/019:39:330
134491560,3ptp4l1301-21snmpd19:50:323
134491560,3ptp4l1301-21snmpd19:50:323
134491560,3ptp4l0-21swapper/322:49:183
134491560,3ptp4l0-21swapper/219:42:242
6306995528,6cyclictest33-21ksoftirqd/200:05:162
6306995526,3cyclictest33-21ksoftirqd/219:45:162
6306995526,3cyclictest33-21ksoftirqd/219:45:162
6306995525,4cyclictest33-21ksoftirqd/222:55:262
6306995525,3cyclictest33-21ksoftirqd/221:14:172
6306995523,5cyclictest33-21ksoftirqd/223:35:222
6306995523,5cyclictest33-21ksoftirqd/200:25:232
6306995523,4cyclictest33-21ksoftirqd/200:16:292
6306995522,7cyclictest33-21ksoftirqd/221:45:152
6306995521,4cyclictest33-21ksoftirqd/222:17:022
6306995520,8cyclictest33-21ksoftirqd/219:10:242
134491550,4ptp4l30128-21/usr/sbin/munin23:30:213
134491550,4ptp4l30128-21/usr/sbin/munin23:30:213
134491550,4ptp4l0-21swapper/320:45:263
134491550,3ptp4l0-21swapper/323:58:493
6306995426,6cyclictest33-21ksoftirqd/219:15:292
6306995426,3cyclictest33-21ksoftirqd/221:35:132
6306995424,4cyclictest33-21ksoftirqd/219:35:282
6306995424,3cyclictest33-21ksoftirqd/221:58:042
6306995422,4cyclictest33-21ksoftirqd/222:24:292
6306995421,6cyclictest33-21ksoftirqd/223:05:192
6306995421,5cyclictest33-21ksoftirqd/222:10:252
134491540,4ptp4l0-21swapper/323:37:093
134491540,3ptp4l0-21swapper/320:15:253
134491540,3ptp4l0-21swapper/300:38:233
6306995323,6cyclictest33-21ksoftirqd/221:00:182
6306995323,4cyclictest33-21ksoftirqd/200:14:052
6306995323,3cyclictest33-21ksoftirqd/219:32:072
6306995321,4cyclictest33-21ksoftirqd/220:28:072
134491530,4ptp4l0-21swapper/320:20:143
134491530,4ptp4l0-21swapper/300:25:183
6306995223,4cyclictest33-21ksoftirqd/200:35:262
6306995222,3cyclictest33-21ksoftirqd/223:43:042
6306995219,3cyclictest33-21ksoftirqd/222:00:162
6306995216,8cyclictest33-21ksoftirqd/221:15:162
6306995215,6cyclictest33-21ksoftirqd/219:25:002
134491520,5ptp4l0-21swapper/219:06:112
134491520,4ptp4l0-21swapper/323:45:193
134491520,3ptp4l0-21swapper/322:15:093
6306995123,6cyclictest33-21ksoftirqd/220:55:212
6306995123,3cyclictest33-21ksoftirqd/220:20:192
6306995121,3cyclictest33-21ksoftirqd/221:51:462
6306995121,3cyclictest33-21ksoftirqd/220:42:272
6306995119,6cyclictest33-21ksoftirqd/220:05:242
6306995117,5cyclictest33-21ksoftirqd/220:00:182
134491510,4ptp4l0-21swapper/322:59:133
134491510,4ptp4l0-21swapper/322:02:003
134491510,2ptp4l0-21swapper/323:15:183
6306995024,6cyclictest33-21ksoftirqd/200:30:172
134491500,4ptp4l0-21swapper/322:27:553
134491500,4ptp4l0-21swapper/321:52:063
134491500,3ptp4l0-21swapper/300:02:443
6306994925,12cyclictest33-21ksoftirqd/222:05:232
134491490,4ptp4l0-21swapper/323:08:263
134491490,3ptp4l0-21swapper/321:31:503
24182480,4sleep00-21swapper/021:20:130
134491480,4ptp4l0-21swapper/323:04:333
134491480,10ptp4l0-21swapper/300:05:243
6306994712,5cyclictest33-21ksoftirqd/222:25:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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