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2026-06-10 - 13:31
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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 highest latencies:
System rackdslot1.osadl.org (updated Wed Jun 10, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
97852820,5sleep00-21swapper/020:30:210
134491720,3ptp4l0-21swapper/119:30:121
4147997031,8cyclictest41-21ksoftirqd/321:10:243
4147997029,8cyclictest41-21ksoftirqd/322:35:223
4147997025,7cyclictest41-21ksoftirqd/321:57:113
4147996936,7cyclictest41-21ksoftirqd/300:20:003
4147996732,3cyclictest41-21ksoftirqd/323:30:003
134491670,28ptp4l25293-21awk22:15:001
4147996635,7cyclictest41-21ksoftirqd/322:45:113
4147996627,11cyclictest41-21ksoftirqd/300:36:423
4144996633,10cyclictest9-21ksoftirqd/000:30:000
4147996535,7cyclictest41-21ksoftirqd/320:35:283
4147996527,8cyclictest41-21ksoftirqd/321:00:003
4144996528,6cyclictest9-21ksoftirqd/020:00:190
4144996527,3cyclictest9-21ksoftirqd/000:35:130
4147996433,7cyclictest41-21ksoftirqd/320:28:273
4147996431,7cyclictest41-21ksoftirqd/321:10:003
4147996424,8cyclictest41-21ksoftirqd/322:21:103
76252630,3sleep30-21swapper/321:35:183
4147996333,6cyclictest41-21ksoftirqd/323:25:013
4147996333,3cyclictest41-21ksoftirqd/320:20:013
4147996330,6cyclictest41-21ksoftirqd/322:30:213
4147996330,4cyclictest41-21ksoftirqd/321:15:303
4147996330,4cyclictest41-21ksoftirqd/321:15:303
4147996329,8cyclictest41-21ksoftirqd/320:20:133
4147996329,7cyclictest41-21ksoftirqd/319:10:233
4147996326,8cyclictest41-21ksoftirqd/322:19:343
4147996325,10cyclictest41-21ksoftirqd/319:42:173
4147996233,8cyclictest41-21ksoftirqd/320:40:173
4147996232,3cyclictest41-21ksoftirqd/323:30:223
4147996229,4cyclictest41-21ksoftirqd/321:55:003
4147996229,4cyclictest41-21ksoftirqd/321:55:003
4147996228,3cyclictest41-21ksoftirqd/323:05:003
4147996225,7cyclictest41-21ksoftirqd/322:53:463
4147996224,8cyclictest41-21ksoftirqd/319:16:433
4147996224,7cyclictest41-21ksoftirqd/323:56:543
4147996223,7cyclictest41-21ksoftirqd/321:00:193
4147996223,7cyclictest41-21ksoftirqd/320:51:593
134491620,21ptp4l0-21swapper/200:25:202
4147996131,7cyclictest41-21ksoftirqd/322:10:263
4147996130,8cyclictest41-21ksoftirqd/323:50:173
4147996126,7cyclictest41-21ksoftirqd/321:45:143
4147996124,7cyclictest41-21ksoftirqd/300:17:043
4147996124,10cyclictest41-21ksoftirqd/320:02:263
4144996131,5cyclictest9-21ksoftirqd/021:20:180
4144996131,5cyclictest9-21ksoftirqd/021:20:180
4144996126,5cyclictest9-21ksoftirqd/021:35:190
4144996126,4cyclictest9-21ksoftirqd/022:45:190
4147996031,4cyclictest41-21ksoftirqd/319:50:263
4147996028,9cyclictest41-21ksoftirqd/323:40:163
4147996028,9cyclictest41-21ksoftirqd/319:45:193
4147996024,7cyclictest41-21ksoftirqd/323:09:003
4147996022,7cyclictest41-21ksoftirqd/322:41:203
4144996031,8cyclictest9-21ksoftirqd/000:05:320
4144996027,3cyclictest9-21ksoftirqd/023:25:190
4144996025,7cyclictest9-21ksoftirqd/021:50:000
4147995926,9cyclictest41-21ksoftirqd/300:05:223
4147995922,8cyclictest41-21ksoftirqd/323:48:113
4147995922,8cyclictest41-21ksoftirqd/323:48:113
4147995922,8cyclictest41-21ksoftirqd/322:28:163
4147995921,8cyclictest41-21ksoftirqd/323:18:513
4144995928,6cyclictest9-21ksoftirqd/021:55:270
4144995924,3cyclictest9-21ksoftirqd/000:21:220
4147995830,6cyclictest41-21ksoftirqd/322:55:263
4147995827,6cyclictest41-21ksoftirqd/320:30:233
4147995822,4cyclictest41-21ksoftirqd/300:10:233
4147995821,7cyclictest41-21ksoftirqd/322:05:453
4147995820,7cyclictest41-21ksoftirqd/320:10:033
4144995829,7cyclictest9-21ksoftirqd/023:57:060
4147995725,7cyclictest41-21ksoftirqd/323:35:243
4147995724,10cyclictest41-21ksoftirqd/321:40:133
4147995722,6cyclictest41-21ksoftirqd/321:30:133
4144995726,5cyclictest9-21ksoftirqd/023:15:230
4144995726,3cyclictest9-21ksoftirqd/023:47:010
4144995726,3cyclictest9-21ksoftirqd/023:47:010
4144995725,5cyclictest9-21ksoftirqd/019:45:140
134491570,4ptp4l0-21swapper/220:53:182
134491570,3ptp4l0-21swapper/222:20:332
4147995628,7cyclictest41-21ksoftirqd/321:25:273
4147995625,7cyclictest41-21ksoftirqd/319:20:253
4147995623,7cyclictest41-21ksoftirqd/300:30:143
4144995628,5cyclictest9-21ksoftirqd/022:50:140
4144995627,7cyclictest9-21ksoftirqd/023:00:260
4144995625,4cyclictest9-21ksoftirqd/022:05:180
4144995624,5cyclictest9-21ksoftirqd/023:35:130
4144995624,3cyclictest9-21ksoftirqd/019:32:450
4144995623,3cyclictest9-21ksoftirqd/023:32:410
4144995622,5cyclictest9-21ksoftirqd/019:50:250
4144995621,5cyclictest9-21ksoftirqd/019:17:230
4144995620,5cyclictest9-21ksoftirqd/019:10:170
4147995520,7cyclictest41-21ksoftirqd/320:48:273
414499556,8cyclictest9-21ksoftirqd/022:20:270
414499553,6cyclictest9-21ksoftirqd/021:30:000
134491550,4ptp4l0-21swapper/119:22:171
134491550,3ptp4l0-21swapper/223:11:552
134491550,3ptp4l0-21swapper/223:11:552
134491550,3ptp4l0-21swapper/121:15:231
134491550,3ptp4l0-21swapper/121:15:221
4147995443,3cyclictest41-21ksoftirqd/320:05:133
4147995422,8cyclictest41-21ksoftirqd/319:30:183
4147995422,6cyclictest41-21ksoftirqd/319:30:013
4147995421,6cyclictest41-21ksoftirqd/320:00:003
4145995429,4cyclictest25-21ksoftirqd/121:25:131
4144995426,3cyclictest9-21ksoftirqd/020:48:310
4144995423,6cyclictest9-21ksoftirqd/020:25:010
4144995423,2cyclictest9-21ksoftirqd/020:12:330
414799533,11cyclictest0-21swapper/321:20:123
414799533,11cyclictest0-21swapper/321:20:123
4147995323,8cyclictest41-21ksoftirqd/300:00:273
414499538,7cyclictest441-21in:imuxsock00:20:000
414499532,5cyclictest0-21swapper/022:40:220
4144995322,3cyclictest9-21ksoftirqd/023:50:040
4144995315,7cyclictest9-21ksoftirqd/019:29:420
134491530,4ptp4l0-21swapper/223:02:092
134491530,4ptp4l0-21swapper/100:20:181
134491530,3ptp4l0-21swapper/200:31:342
134491530,3ptp4l0-21swapper/119:35:201
134491530,10ptp4l0-21swapper/123:47:391
134491530,10ptp4l0-21swapper/123:47:391
414499526,6cyclictest9-21ksoftirqd/019:35:170
414499525,6cyclictest9-21ksoftirqd/023:20:190
414499523,8cyclictest9-21ksoftirqd/020:00:000
414499523,6cyclictest9-21ksoftirqd/022:35:190
4144995227,4cyclictest9-21ksoftirqd/020:58:520
414499522,5cyclictest0-21swapper/022:15:270
4144995224,3cyclictest9-21ksoftirqd/020:39:560
4144995218,3cyclictest9-21ksoftirqd/022:55:390
414799515,7cyclictest41-21ksoftirqd/323:14:023
414799515,7cyclictest41-21ksoftirqd/323:14:023
414799512,11cyclictest0-21swapper/300:25:133
414499515,5cyclictest9-21ksoftirqd/021:00:180
4144995122,3cyclictest9-21ksoftirqd/022:28:050
4144995122,3cyclictest9-21ksoftirqd/000:33:130
134491510,3ptp4l0-21swapper/120:10:251
414799506,2cyclictest41-21ksoftirqd/319:40:013
4147995016,7cyclictest41-21ksoftirqd/322:02:243
414599501,4cyclictest9098-21latency_hist21:40:001
4145995014,2cyclictest134491ptp4l21:30:191
414499504,3cyclictest121rcu_preempt20:50:140
414499503,5cyclictest9-21ksoftirqd/021:50:170
414499503,5cyclictest9-21ksoftirqd/021:50:170
4144995021,6cyclictest9-21ksoftirqd/022:32:160
4144995021,2cyclictest9-21ksoftirqd/021:19:040
4144995021,2cyclictest9-21ksoftirqd/021:19:040
4144995017,3cyclictest9-21ksoftirqd/023:08:210
4144995017,3cyclictest9-21ksoftirqd/021:06:060
134491500,4ptp4l0-21swapper/223:15:212
134491500,4ptp4l0-21swapper/222:26:172
134491500,4ptp4l0-21swapper/119:55:431
134491500,3ptp4l0-21swapper/123:23:411
414499494,5cyclictest9-21ksoftirqd/022:10:270
414499494,5cyclictest9-21ksoftirqd/021:40:250
414499494,3cyclictest0-21swapper/021:30:140
414499493,7cyclictest9-21ksoftirqd/023:40:240
414499492,3cyclictest0-21swapper/020:30:010
414499491,2cyclictest121rcu_preempt00:10:280
414499490,5cyclictest0-21swapper/019:40:130
134491490,5ptp4l0-21swapper/019:07:100
134491490,4ptp4l0-21swapper/223:36:552
414499483,3cyclictest121rcu_preempt20:05:160
414499480,8cyclictest9-21ksoftirqd/023:10:260
414499480,8cyclictest9-21ksoftirqd/023:10:260
414499474,7cyclictest121rcu_preempt20:40:140
414499473,5cyclictest9-21ksoftirqd/020:15:150
4144994629,5cyclictest9-21ksoftirqd/022:00:270
414499462,2cyclictest0-21swapper/000:00:200
134491460,5ptp4l2758-21meminfo19:05:191
134491460,4ptp4l0-21swapper/222:08:362
134491460,4ptp4l0-21swapper/221:56:442
134491460,3ptp4l0-21swapper/221:49:512
134491460,3ptp4l0-21swapper/220:02:232
414499453,6cyclictest121rcu_preempt19:22:060
414499451,8cyclictest29783-21ls21:15:000
134491450,8ptp4l0-21swapper/222:17:472
134491450,5ptp4l1969-21apt-get20:15:102
134491450,4ptp4l0-21swapper/223:43:402
134491450,4ptp4l0-21swapper/219:45:122
134491450,4ptp4l0-21swapper/200:06:032
134491450,4ptp4l0-21swapper/119:15:571
134491450,3ptp4l0-21swapper/200:11:272
414599440,5cyclictest25-21ksoftirqd/120:55:411
134491440,4ptp4l3872-21ls22:35:272
134491440,4ptp4l0-21swapper/220:37:262
134491440,4ptp4l0-21swapper/119:40:341
134491440,3ptp4l0-21swapper/123:17:131
134491430,9ptp4l0-21swapper/223:32:422
134491430,9ptp4l0-21swapper/221:50:452
134491430,9ptp4l0-21swapper/221:50:442
134491430,9ptp4l0-21swapper/221:10:162
134491430,4ptp4l9449-21apt-get00:00:132
134491430,4ptp4l16540-21apt-get00:15:142
134491430,3ptp4l0-21swapper/121:43:021
134491430,3ptp4l0-21swapper/120:24:581
134491430,3ptp4l0-21swapper/100:02:461
134491420,9ptp4l0-21swapper/223:08:292
134491420,9ptp4l0-21swapper/220:40:082
134491420,8ptp4l0-21swapper/223:45:482
134491420,8ptp4l0-21swapper/223:45:482
134491420,5ptp4l23171-21diskstats19:50:151
134491420,5ptp4l22401-21apt-get19:50:032
134491420,5ptp4l18557-21/usr/sbin/munin19:40:172
134491420,5ptp4l0-21swapper/100:35:241
134491420,4ptp4l8937-21apt-get20:30:121
134491420,4ptp4l1106-21memory23:40:201
134491420,4ptp4l0-21swapper/223:24:482
134491420,4ptp4l0-21swapper/122:00:001
134491420,3ptp4l0-21swapper/221:00:012
4145994136,3cyclictest25-21ksoftirqd/122:45:001
134491410,5ptp4l906-21irqstats21:20:181
134491410,5ptp4l906-21irqstats21:20:181
134491410,5ptp4l0-21swapper/123:55:231
134491410,5ptp4l0-21swapper/120:00:151
134491410,4ptp4l7590-21meminfo20:25:191
134491410,4ptp4l4174-21apt-get19:10:101
134491410,4ptp4l30471-21df23:35:141
134491410,4ptp4l27223-21apt-get21:10:021
134491410,4ptp4l26093-21hddtemp_smartct23:25:161
134491410,4ptp4l2436-21apt-get21:25:122
134491410,4ptp4l21892-21diskstats00:25:151
134491410,4ptp4l19108-21iostat23:10:181
134491410,4ptp4l19108-21iostat23:10:181
134491410,4ptp4l16540-21apt-get00:15:131
134491410,4ptp4l0-21swapper/221:44:072
134491410,3ptp4l7042-21apt-get21:35:112
134491410,3ptp4l18613-21apt-get22:00:122
134491410,3ptp4l0-21swapper/220:30:222
134491410,3ptp4l0-21swapper/121:09:241
4145994035,3cyclictest25-21ksoftirqd/122:35:131
4145994035,3cyclictest25-21ksoftirqd/100:35:001
4145994035,2cyclictest25-21ksoftirqd/122:10:001
134491400,8ptp4l0-21swapper/219:22:472
134491400,6ptp4l12109-21ls21:45:171
134491400,6ptp4l0-21swapper/122:55:011
134491400,5ptp4l0-21swapper/222:55:582
134491400,5ptp4l0-21swapper/119:45:231
134491400,4ptp4l7936-21meminfo22:45:211
134491400,4ptp4l14253-21diskstats21:50:141
134491400,4ptp4l14253-21diskstats21:50:141
134491400,4ptp4l0-21swapper/222:11:332
134491400,4ptp4l0-21swapper/221:15:232
134491400,4ptp4l0-21swapper/221:15:232
134491400,4ptp4l0-21swapper/220:09:032
134491400,4ptp4l0-21swapper/122:30:101
134491400,4ptp4l0-21swapper/120:50:181
134491400,3ptp4l31135-21ls22:25:211
134491400,3ptp4l14114-21iostat20:40:171
134491400,3ptp4l13083-21ls22:55:281
134491400,3ptp4l12199-21ntp_states19:25:211
134491400,3ptp4l1106-21ntp_states22:30:232
46198390,5rtkit-daemon0-21swapper/200:20:032
4145993934,3cyclictest25-21ksoftirqd/122:15:181
4145993934,3cyclictest25-21ksoftirqd/120:10:001
134491390,5ptp4l27849-21date23:30:002
134491390,5ptp4l0-21swapper/223:55:152
134491390,5ptp4l0-21swapper/219:36:232
134491390,4ptp4l0-21swapper/223:53:312
134491390,4ptp4l0-21swapper/222:45:022
134491390,4ptp4l0-21swapper/221:22:132
134491390,4ptp4l0-21swapper/221:22:132
134491390,4ptp4l0-21swapper/221:05:132
134491390,4ptp4l0-21swapper/220:46:432
134491390,4ptp4l0-21swapper/220:25:412
134491390,4ptp4l0-21swapper/219:57:232
134491390,4ptp4l0-21swapper/219:18:572
134491390,4ptp4l0-21swapper/200:35:412
134491390,4ptp4l0-21swapper/123:00:251
134491390,4ptp4l0-21swapper/120:15:151
134491390,3ptp4l5641-21meminfo22:40:212
134491390,3ptp4l12869-21ntp_states00:05:261
4145993827,9cyclictest25-21ksoftirqd/122:20:201
134491380,4ptp4l0-21swapper/222:53:472
134491380,4ptp4l0-21swapper/221:30:242
134491380,4ptp4l0-21swapper/219:30:192
134491380,4ptp4l0-21swapper/219:25:192
134491380,4ptp4l0-21swapper/123:54:291
134491380,4ptp4l0-21swapper/123:34:211
134491380,4ptp4l0-21swapper/122:00:191
134491380,4ptp4l0-21swapper/120:47:411
134491380,3ptp4l0-21swapper/220:20:042
134491380,3ptp4l0-21swapper/219:11:052
134491380,3ptp4l0-21swapper/123:05:281
134491370,4ptp4l0-21swapper/220:55:362
134491370,4ptp4l0-21swapper/121:01:191
134491370,4ptp4l0-21swapper/100:10:111
134491370,3ptp4l0-21swapper/220:10:222
134491360,3ptp4l0-21swapper/120:35:261
137891222,13phc2sys2152-21grep19:05:153
18472121,4sleep22061-21df_inode19:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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