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2026-06-22 - 11:04
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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 Mon Jun 22, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2495121600,5sleep31541099cyclictest19:30:143
2495121600,5sleep31541099cyclictest19:30:143
326521390,6sleep11540899cyclictest00:30:191
15408996933,5cyclictest25-21ksoftirqd/122:59:591
15408996724,5cyclictest25-21ksoftirqd/119:15:181
134491670,3ptp4l0-21swapper/019:36:250
15408996432,4cyclictest25-21ksoftirqd/121:20:251
15408996330,8cyclictest25-21ksoftirqd/122:30:001
15408996329,8cyclictest25-21ksoftirqd/120:10:281
15408996228,6cyclictest25-21ksoftirqd/122:35:281
15408996227,4cyclictest25-21ksoftirqd/122:05:271
1541099612,36cyclictest0-21swapper/320:22:283
15408996129,7cyclictest25-21ksoftirqd/122:50:281
15408996123,8cyclictest25-21ksoftirqd/119:25:011
15408996121,7cyclictest25-21ksoftirqd/120:20:171
15408996120,6cyclictest25-21ksoftirqd/120:40:211
134491610,3ptp4l0-21swapper/223:46:002
15408996030,6cyclictest25-21ksoftirqd/119:10:241
15408996028,6cyclictest25-21ksoftirqd/122:10:201
15408996027,4cyclictest25-21ksoftirqd/122:45:151
15408996027,3cyclictest25-21ksoftirqd/100:15:011
15408996025,8cyclictest25-21ksoftirqd/100:00:291
15408995931,9cyclictest25-21ksoftirqd/121:30:011
15408995931,7cyclictest25-21ksoftirqd/120:00:291
15408995926,3cyclictest25-21ksoftirqd/119:40:011
15408995925,7cyclictest25-21ksoftirqd/121:50:181
15408995923,8cyclictest25-21ksoftirqd/123:50:161
15408995923,8cyclictest25-21ksoftirqd/123:25:251
15408995923,3cyclictest25-21ksoftirqd/120:05:271
15408995921,7cyclictest25-21ksoftirqd/123:40:161
15408995919,8cyclictest25-21ksoftirqd/119:55:191
134491590,4ptp4l0-21swapper/121:10:191
134491590,4ptp4l0-21swapper/120:45:161
134491590,4ptp4l0-21swapper/021:45:190
235312580,6sleep21540999cyclictest22:55:162
1541099583,6cyclictest401ktimersoftd/321:40:013
15408995827,8cyclictest25-21ksoftirqd/123:35:171
15408995826,3cyclictest25-21ksoftirqd/122:40:191
15408995823,8cyclictest25-21ksoftirqd/119:45:181
20972570,6sleep31541099cyclictest23:20:003
1541099572,36cyclictest0-21swapper/323:42:143
15408995728,7cyclictest25-21ksoftirqd/120:15:141
15408995727,7cyclictest25-21ksoftirqd/122:15:211
15408995725,8cyclictest25-21ksoftirqd/100:05:151
15408995724,8cyclictest25-21ksoftirqd/120:30:251
15408995723,6cyclictest25-21ksoftirqd/121:40:181
15408995722,3cyclictest25-21ksoftirqd/120:35:221
15408995718,6cyclictest25-21ksoftirqd/119:51:301
134491570,5ptp4l101ktimersoftd/020:36:130
1541099562,35cyclictest0-21swapper/321:19:413
1541099562,32cyclictest0-21swapper/319:27:373
1541099562,12cyclictest0-21swapper/320:10:243
15408995625,6cyclictest25-21ksoftirqd/123:05:251
15408995623,8cyclictest25-21ksoftirqd/100:20:151
15408995623,7cyclictest25-21ksoftirqd/120:25:171
15408995622,8cyclictest25-21ksoftirqd/121:05:291
134491560,5ptp4l0-21swapper/021:20:300
134491560,4ptp4l0-21swapper/121:32:251
134491560,3ptp4l2753-21fschecks_count00:30:160
134491560,3ptp4l0-21swapper/121:01:421
134491560,11ptp4l0-21swapper/221:02:112
1541099554,12cyclictest0-21swapper/300:18:333
1541099553,5cyclictest401ktimersoftd/319:40:013
1541099552,11cyclictest0-21swapper/321:21:123
15409995527,8cyclictest33-21ksoftirqd/200:00:222
15408995527,7cyclictest25-21ksoftirqd/100:00:011
15408995521,7cyclictest25-21ksoftirqd/123:00:171
15408995519,5cyclictest25-21ksoftirqd/122:00:271
134491550,5ptp4l0-21swapper/022:20:210
134491550,5ptp4l0-21swapper/022:20:210
134491550,4ptp4l0-21swapper/022:50:300
1541099542,7cyclictest0-21swapper/322:20:243
1541099542,7cyclictest0-21swapper/322:20:233
15408995423,7cyclictest25-21ksoftirqd/123:15:221
134491540,12ptp4l14417-21python19:05:240
1541099534,7cyclictest41-21ksoftirqd/320:55:153
1541099533,6cyclictest41-21ksoftirqd/320:00:143
1541099533,5cyclictest401ktimersoftd/321:50:223
1541099531,6cyclictest0-21swapper/321:10:203
15408995313,8cyclictest25-21ksoftirqd/123:30:221
134491530,5ptp4l0-21swapper/021:37:270
134491530,4ptp4l0-21swapper/223:00:512
134491530,4ptp4l0-21swapper/222:16:462
1541099523,7cyclictest401ktimersoftd/300:30:163
1541099523,5cyclictest401ktimersoftd/319:10:243
1541099522,6cyclictest0-21swapper/321:00:163
1541099522,5cyclictest0-21swapper/320:05:163
1541099522,33cyclictest0-21swapper/300:10:293
15410995221,7cyclictest41-21ksoftirqd/323:50:173
1541099522,11cyclictest0-21swapper/322:40:243
1541099520,6cyclictest30114-21cut19:40:193
1540899526,2cyclictest25-21ksoftirqd/122:30:201
1540899525,2cyclictest25-21ksoftirqd/120:50:211
15408995220,7cyclictest25-21ksoftirqd/119:40:161
15408995218,8cyclictest25-21ksoftirqd/123:10:141
15408995218,8cyclictest25-21ksoftirqd/121:55:121
134491520,4ptp4l0-21swapper/021:32:170
134491520,4ptp4l0-21swapper/021:29:420
134491520,4ptp4l0-21swapper/019:59:120
1541099515,8cyclictest41-21ksoftirqd/321:26:493
1541099512,7cyclictest0-21swapper/322:55:253
1541099512,5cyclictest0-21swapper/323:00:183
1541099511,6cyclictest0-21swapper/321:30:153
1541099510,7cyclictest41-21ksoftirqd/322:35:233
15409995112,9cyclictest33-21ksoftirqd/219:45:002
1540899515,6cyclictest25-21ksoftirqd/100:15:231
1540899511,7cyclictest25-21ksoftirqd/123:45:181
134491510,4ptp4l0-21swapper/200:38:332
134491510,4ptp4l0-21swapper/122:24:341
134491510,4ptp4l0-21swapper/122:24:331
134491510,3ptp4l2291-21df22:10:130
1541099503,8cyclictest28102-21irqrtprio20:45:173
1541099503,7cyclictest0-21swapper/319:51:433
1541099503,6cyclictest41-21ksoftirqd/322:30:223
1541099503,12cyclictest0-21swapper/300:03:563
1541099502,7cyclictest0-21swapper/323:25:243
1541099502,7cyclictest0-21swapper/323:10:133
1541099502,38cyclictest0-21swapper/320:42:253
1541099501,7cyclictest41-21ksoftirqd/322:00:213
1541099501,7cyclictest41-21ksoftirqd/320:30:243
15410995016,4cyclictest41-21ksoftirqd/323:05:183
1541099500,7cyclictest41-21ksoftirqd/300:05:303
1541099500,7cyclictest29690-21cat22:00:013
1541099500,5cyclictest19309-21kernelversion23:55:193
15409995015,7cyclictest33-21ksoftirqd/223:20:002
15409995013,4cyclictest33-21ksoftirqd/219:40:002
15408995028,3cyclictest25-21ksoftirqd/119:26:261
15408995022,7cyclictest25-21ksoftirqd/100:40:011
134491500,4ptp4l0-21swapper/320:17:523
134491500,4ptp4l0-21swapper/219:20:532
134491500,4ptp4l0-21swapper/023:45:540
1541099494,10cyclictest41-21ksoftirqd/323:30:203
1541099493,7cyclictest41-21ksoftirqd/300:35:203
1541099492,11cyclictest0-21swapper/322:25:153
1541099491,6cyclictest0-21swapper/300:20:113
1541099490,6cyclictest501-21basename00:25:183
15409994934,12cyclictest33-21ksoftirqd/200:35:002
1540999490,3cyclictest33-21ksoftirqd/220:50:012
1540899495,2cyclictest25-21ksoftirqd/121:15:171
134491490,4ptp4l0-21swapper/200:11:592
134491490,4ptp4l0-21swapper/121:46:341
134491490,4ptp4l0-21swapper/022:34:570
134491490,4ptp4l0-21swapper/020:04:510
134491490,3ptp4l0-21swapper/020:28:270
1541099483,6cyclictest0-21swapper/322:06:383
1541099483,5cyclictest0-21swapper/321:45:143
1541099482,7cyclictest0-21swapper/319:55:153
1541099482,6cyclictest401ktimersoftd/322:15:293
1541099481,6cyclictest0-21swapper/319:15:273
1541099480,5cyclictest9678-21if_enp1s023:35:183
1540899485,3cyclictest25-21ksoftirqd/120:55:171
1540899485,2cyclictest25-21ksoftirqd/121:40:011
134491480,5ptp4l0-21swapper/219:09:342
134491480,5ptp4l0-21swapper/022:03:420
134491480,4ptp4l0-21swapper/021:59:480
134491480,4ptp4l0-21swapper/021:11:260
1541099474,5cyclictest0-21swapper/323:20:183
15410994742,3cyclictest391rcuc/320:25:183
1541099473,6cyclictest0-21swapper/320:52:083
1541099472,6cyclictest0-21swapper/319:24:473
1541099472,5cyclictest0-21swapper/322:53:143
1541099472,5cyclictest0-21swapper/321:05:273
15409994727,12cyclictest33-21ksoftirqd/223:08:292
15409994721,11cyclictest33-21ksoftirqd/200:15:052
1540899473,3cyclictest0-21swapper/119:30:251
1540899473,3cyclictest0-21swapper/119:30:251
1540899472,8cyclictest25-21ksoftirqd/100:25:211
134491470,4ptp4l0-21swapper/021:04:570
1541099462,7cyclictest41-21ksoftirqd/322:48:103
1541099461,6cyclictest0-21swapper/321:42:113
1541099460,2cyclictest137891phc2sys22:10:263
15409994641,3cyclictest33-21ksoftirqd/223:55:002
15409994632,12cyclictest33-21ksoftirqd/221:00:002
15409994626,11cyclictest33-21ksoftirqd/221:27:312
15409994618,4cyclictest33-21ksoftirqd/222:27:522
134491460,3ptp4l0-21swapper/021:15:220
134491460,3ptp4l0-21swapper/000:28:530
1540999452,2cyclictest121rcu_preempt19:52:152
134491450,8ptp4l19290-21ls19:15:262
134491450,4ptp4l0-21swapper/219:30:592
134491450,4ptp4l0-21swapper/219:30:592
1541099444,7cyclictest41-21ksoftirqd/320:35:243
1541099442,5cyclictest401ktimersoftd/323:45:283
1541099441,6cyclictest41-21ksoftirqd/319:45:143
1540999447,7cyclictest33-21ksoftirqd/222:10:222
1540999446,6cyclictest33-21ksoftirqd/220:25:222
15409994438,3cyclictest33-21ksoftirqd/223:40:002
15409994424,11cyclictest33-21ksoftirqd/220:08:322
15409994420,16cyclictest33-21ksoftirqd/223:40:192
15409994413,3cyclictest33-21ksoftirqd/219:30:002
15409994411,5cyclictest33-21ksoftirqd/221:57:042
15408994428,4cyclictest25-21ksoftirqd/123:20:151
134491440,5ptp4l0-21swapper/222:05:112
1540999438,7cyclictest33-21ksoftirqd/219:55:272
15409994337,3cyclictest33-21ksoftirqd/221:45:002
15409994337,3cyclictest33-21ksoftirqd/220:30:202
15409994337,3cyclictest33-21ksoftirqd/220:10:272
15409994324,9cyclictest33-21ksoftirqd/223:27:512
1540999431,2cyclictest121rcu_preempt19:46:262
1540999430,8cyclictest33-21ksoftirqd/223:20:352
134491430,9ptp4l0-21swapper/223:31:002
134491430,8ptp4l0-21swapper/222:54:012
134491430,7ptp4l121rcu_preempt21:53:570
134491430,4ptp4l0-21swapper/020:49:270
134491430,10ptp4l0-21swapper/200:25:422
15409994238,2cyclictest33-21ksoftirqd/221:25:002
15409994237,3cyclictest33-21ksoftirqd/221:40:002
15409994237,3cyclictest33-21ksoftirqd/221:10:122
15409994213,6cyclictest33-21ksoftirqd/220:20:002
134491420,9ptp4l0-21swapper/221:54:092
134491420,9ptp4l0-21swapper/220:53:402
134491420,8ptp4l0-21swapper/223:12:222
134491420,8ptp4l0-21swapper/221:47:192
134491420,8ptp4l0-21swapper/000:38:020
134491420,5ptp4l13491-21df20:15:130
134491420,5ptp4l0-21swapper/022:45:110
134491420,4ptp4l11408-21hddtemp_smartct20:10:160
134491420,4ptp4l0-21swapper/200:20:462
134491420,3ptp4l18752-21diskstats23:55:150
1540999415,3cyclictest33-21ksoftirqd/200:05:192
1540999412,5cyclictest121rcu_preempt20:36:282
1540999411,8cyclictest121rcu_preempt20:00:402
1540999411,10cyclictest33-21ksoftirqd/222:41:052
134491410,7ptp4l25941-21kernelversion20:40:180
134491410,5ptp4l0-21swapper/222:30:212
134491410,5ptp4l0-21swapper/000:12:010
134491410,4ptp4l4424-21apt-get22:15:130
134491410,4ptp4l31244-21unixbench_multi20:50:270
134491410,4ptp4l21328-21iostat00:00:210
134491410,4ptp4l16790-21iostat_ios22:40:180
134491410,3ptp4l28415-21iostat00:15:170
134491410,3ptp4l0-21swapper/219:10:412
15409994035,3cyclictest33-21ksoftirqd/220:40:142
15409994023,6cyclictest33-21ksoftirqd/220:20:132
134491400,5ptp4l0-21swapper/023:00:160
134491400,4ptp4l7728-21irqstats23:30:200
134491400,4ptp4l30001-21/usr/sbin/munin23:10:190
134491400,4ptp4l2865-21iostat_ios23:20:200
134491400,4ptp4l13826-21/usr/sbin/munin22:35:160
134491400,4ptp4l10154-21ntp_states22:25:220
134491400,4ptp4l0-21swapper/223:59:362
134491400,4ptp4l0-21swapper/221:05:112
134491400,4ptp4l0-21swapper/119:08:121
134491400,4ptp4l0-21swapper/023:45:000
134491400,4ptp4l0-21swapper/021:05:210
134491400,4ptp4l0-21swapper/020:30:220
134491400,4ptp4l0-21swapper/020:05:220
134491400,3ptp4l31822-21apt-get19:45:120
134491400,3ptp4l25002-21diskstats19:30:130
134491400,3ptp4l25002-21diskstats19:30:130
134491400,3ptp4l24179-21ntp_states00:05:260
1540999391,2cyclictest121rcu_preempt22:20:012
1540999391,2cyclictest121rcu_preempt22:20:012
1540999390,2cyclictest121rcu_preempt22:35:252
134491390,5ptp4l24001-21sed22:55:190
134491390,4ptp4l0-21swapper/222:45:252
134491390,4ptp4l0-21swapper/221:32:012
134491390,4ptp4l0-21swapper/221:16:502
134491390,4ptp4l0-21swapper/023:15:180
134491390,4ptp4l0-21swapper/023:05:180
134491390,4ptp4l0-21swapper/022:05:130
134491390,4ptp4l0-21swapper/021:42:410
134491390,4ptp4l0-21swapper/020:23:420
134491390,4ptp4l0-21swapper/019:50:190
134491390,4ptp4l0-21swapper/019:41:050
134491390,4ptp4l0-21swapper/019:25:310
134491390,4ptp4l0-21swapper/019:20:220
134491390,4ptp4l0-21swapper/019:15:150
134491390,4ptp4l0-21swapper/000:23:450
134491390,3ptp4l32571-21iostat20:55:180
134491390,3ptp4l16449-21meminfo19:10:270
134491390,3ptp4l0-21swapper/023:52:140
134491390,2ptp4l0-21swapper/023:35:200
15409993832,3cyclictest33-21ksoftirqd/222:00:122
134491380,5ptp4l0-21swapper/319:08:343
134491380,3ptp4l0-21swapper/023:28:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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