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2026-04-02 - 11:49
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Thu Apr 02, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591207173,22phc2sys0-21swapper/319:07:593
33182203169,22sleep10-21swapper/119:09:161
32052201167,22sleep00-21swapper/019:07:460
30812198167,21sleep20-21swapper/219:06:112
131912670,5sleep312945-21latency_hist21:40:013
90302630,2sleep30-21swapper/323:40:123
367699630,3cyclictest23195-21latency_hist22:00:001
26582580,5sleep125-21ksoftirqd/100:30:201
367599535,6cyclictest24260-21cut22:00:180
138491520,1ptp4l401ktimersoftd/323:57:213
3675994811,5cyclictest9-21ksoftirqd/019:11:380
367599475,6cyclictest11867-21irqrtprio20:30:190
367599460,11cyclictest5247-21ls22:25:250
367599445,6cyclictest3193-21/usr/sbin/munin23:25:260
367599440,10cyclictest21134-21expr21:55:130
138491440,0ptp4l401ktimersoftd/300:37:423
138491430,0ptp4l401ktimersoftd/323:21:483
138491430,0ptp4l401ktimersoftd/320:35:433
138491430,0ptp4l401ktimersoftd/320:05:393
138491420,0ptp4l401ktimersoftd/322:25:003
138491420,0ptp4l401ktimersoftd/321:40:473
138491420,0ptp4l401ktimersoftd/320:26:533
138491420,0ptp4l401ktimersoftd/319:52:253
367699410,3cyclictest15557-21taskset22:47:371
367599414,6cyclictest6452-21cat21:25:170
3675994121,4cyclictest9-21ksoftirqd/021:22:400
138491410,0ptp4l401ktimersoftd/319:15:203
3677994034,3cyclictest33-21ksoftirqd/200:25:112
3676994035,3cyclictest25-21ksoftirqd/100:29:591
3676994027,11cyclictest25-21ksoftirqd/100:10:081
367699402,27cyclictest7799-21taskset23:35:241
3677993929,3cyclictest33-21ksoftirqd/219:40:012
367699391,16cyclictest0-21swapper/120:25:161
3675993933,4cyclictest9-21ksoftirqd/020:55:000
3675993921,4cyclictest9-21ksoftirqd/021:13:450
3675993920,3cyclictest9-21ksoftirqd/021:09:000
3675993910,5cyclictest9-21ksoftirqd/019:21:370
3675993910,5cyclictest9-21ksoftirqd/019:21:370
138491390,0ptp4l401ktimersoftd/321:15:143
138491390,0ptp4l401ktimersoftd/319:30:133
3678993832,4cyclictest41-21ksoftirqd/323:47:063
3677993833,3cyclictest33-21ksoftirqd/220:55:002
3676993830,5cyclictest25-21ksoftirqd/121:55:001
367599386,5cyclictest9-21ksoftirqd/019:30:220
367599383,4cyclictest9-21ksoftirqd/023:33:570
3675993820,8cyclictest9-21ksoftirqd/020:15:490
138491380,1ptp4l401ktimersoftd/322:06:193
3677993731,4cyclictest33-21ksoftirqd/220:41:272
3677993731,4cyclictest33-21ksoftirqd/220:23:072
3677993731,4cyclictest33-21ksoftirqd/220:00:472
3677993731,4cyclictest33-21ksoftirqd/219:51:242
3677993731,4cyclictest33-21ksoftirqd/200:04:382
367699370,3cyclictest2840-21taskset21:17:061
367599377,5cyclictest9-21ksoftirqd/023:06:010
367599376,5cyclictest9-21ksoftirqd/023:02:070
367599376,4cyclictest9-21ksoftirqd/023:17:440
367599374,4cyclictest9-21ksoftirqd/022:24:130
3675993721,4cyclictest9-21ksoftirqd/020:21:310
3675993714,5cyclictest9-21ksoftirqd/022:40:260
138491370,0ptp4l401ktimersoftd/321:05:133
3678993630,4cyclictest41-21ksoftirqd/322:34:093
3678993630,4cyclictest41-21ksoftirqd/321:32:273
3678993630,4cyclictest41-21ksoftirqd/319:22:533
3678993630,4cyclictest41-21ksoftirqd/319:22:533
3678993630,3cyclictest41-21ksoftirqd/323:30:003
3677993631,3cyclictest33-21ksoftirqd/219:35:102
3677993630,4cyclictest33-21ksoftirqd/220:59:362
3677993630,4cyclictest33-21ksoftirqd/220:33:212
3677993630,4cyclictest33-21ksoftirqd/220:11:592
3676993630,4cyclictest25-21ksoftirqd/123:19:321
3676993630,4cyclictest25-21ksoftirqd/123:07:201
3676993630,4cyclictest25-21ksoftirqd/120:43:181
3676993630,4cyclictest25-21ksoftirqd/120:24:491
367599367,5cyclictest9-21ksoftirqd/020:40:390
367599366,5cyclictest9-21ksoftirqd/023:53:310
367599365,5cyclictest9-21ksoftirqd/023:43:440
367599363,8cyclictest9-21ksoftirqd/019:40:180
3675993630,4cyclictest15753-21idleruntime-cro22:50:000
3678993530,3cyclictest41-21ksoftirqd/323:40:003
3678993530,3cyclictest41-21ksoftirqd/323:00:183
3678993530,3cyclictest41-21ksoftirqd/321:05:003
3678993530,3cyclictest41-21ksoftirqd/319:14:113
3678993529,4cyclictest41-21ksoftirqd/322:18:013
3678993529,4cyclictest41-21ksoftirqd/322:10:103
3678993529,4cyclictest41-21ksoftirqd/320:56:293
3678993529,4cyclictest41-21ksoftirqd/320:52:313
3678993529,4cyclictest41-21ksoftirqd/300:15:333
3677993529,4cyclictest33-21ksoftirqd/223:10:582
3677993529,4cyclictest33-21ksoftirqd/221:46:382
3677993529,4cyclictest33-21ksoftirqd/221:20:582
3677993529,4cyclictest33-21ksoftirqd/221:06:022
3677993529,4cyclictest33-21ksoftirqd/200:36:272
3676993529,4cyclictest25-21ksoftirqd/122:23:241
3676993529,4cyclictest25-21ksoftirqd/119:53:171
3676993529,4cyclictest25-21ksoftirqd/119:34:341
3676993529,4cyclictest25-21ksoftirqd/119:28:491
3676993529,4cyclictest25-21ksoftirqd/100:23:091
367599356,5cyclictest9-21ksoftirqd/000:15:330
367599356,4cyclictest9-21ksoftirqd/022:34:440
367599356,4cyclictest9-21ksoftirqd/020:14:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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