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2026-08-28 - 13:21
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Fri Aug 28, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1378917668,3phc2sys0-21swapper/319:09:593
78252660,4sleep00-21swapper/022:05:160
134491650,4ptp4l5122-21chrt23:06:191
23473996430,5cyclictest33-21ksoftirqd/222:45:132
23471996432,4cyclictest9-21ksoftirqd/023:00:150
134491620,19ptp4l0-21swapper/323:30:143
23473996024,5cyclictest33-21ksoftirqd/223:55:162
134491600,4ptp4l0-21swapper/000:21:100
134491600,3ptp4l20269-21meminfo22:30:203
23473995927,3cyclictest33-21ksoftirqd/222:35:282
134491590,3ptp4l0-21swapper/323:25:193
289372580,5sleep30-21swapper/320:30:193
2347299585,7cyclictest25-21ksoftirqd/122:40:251
134491580,4ptp4l0-21swapper/320:27:063
134491580,4ptp4l0-21swapper/119:22:091
134491580,4ptp4l0-21swapper/021:15:230
23473995727,9cyclictest33-21ksoftirqd/222:50:222
134491570,4ptp4l0-21swapper/322:27:153
134491570,4ptp4l0-21swapper/320:40:293
134491570,4ptp4l0-21swapper/019:05:500
134491570,3ptp4l0-21swapper/120:32:091
2347499562,52cyclictest0-21swapper/322:21:093
23471995625,4cyclictest9468-21kworker/0:121:07:280
23471995625,4cyclictest9468-21kworker/0:121:07:280
134491560,4ptp4l0-21swapper/321:00:043
134491560,4ptp4l0-21swapper/120:58:101
2347399552,31cyclictest0-21swapper/222:24:192
134491550,5ptp4l0-21swapper/123:27:491
134491550,4ptp4l0-21swapper/221:10:142
134491550,4ptp4l0-21swapper/022:20:220
134491550,4ptp4l0-21swapper/021:38:580
134491550,3ptp4l0-21swapper/321:55:263
2347399544,9cyclictest33-21ksoftirqd/219:50:182
2347399543,8cyclictest0-21swapper/219:35:142
2347399543,6cyclictest321ktimersoftd/222:55:232
23473995424,5cyclictest33-21ksoftirqd/219:10:162
2347399542,31cyclictest0-21swapper/219:29:142
193072540,4sleep20-21swapper/220:10:172
134491540,4ptp4l0-21swapper/122:17:421
134491540,4ptp4l0-21swapper/021:02:520
134491540,3ptp4l0-21swapper/319:40:233
134491540,3ptp4l0-21swapper/220:55:212
11442540,5sleep30-21swapper/319:30:263
2347399535,6cyclictest33-21ksoftirqd/223:20:012
2347399533,7cyclictest0-21swapper/223:30:402
2347399532,8cyclictest0-21swapper/220:20:162
2347399532,6cyclictest0-21swapper/223:35:242
2347399532,32cyclictest0-21swapper/220:09:212
2347399532,32cyclictest0-21swapper/220:09:212
134491530,4ptp4l0-21swapper/020:29:500
134491530,4ptp4l0-21swapper/019:52:110
134491530,3ptp4l2347499cyclictest22:14:563
134491530,3ptp4l0-21swapper/320:45:193
2347399526,7cyclictest33-21ksoftirqd/223:10:192
2347399525,5cyclictest33-21ksoftirqd/221:15:302
2347399523,6cyclictest0-21swapper/219:30:312
2347399523,3cyclictest121rcu_preempt22:15:242
2347399522,6cyclictest0-21swapper/219:41:432
2347399522,29cyclictest0-21swapper/200:25:202
2347399521,6cyclictest0-21swapper/220:15:282
2347399521,5cyclictest33-21ksoftirqd/221:35:182
2347399520,6cyclictest30116-21apt-get20:35:002
2347399520,13cyclictest33-21ksoftirqd/220:40:262
134491520,4ptp4l0-21swapper/121:46:571
134491520,11ptp4l21082-21apt-get19:05:121
2347399516,2cyclictest121rcu_preempt23:50:242
2347399514,8cyclictest33-21ksoftirqd/221:45:232
2347399514,6cyclictest33-21ksoftirqd/221:40:232
2347399514,5cyclictest33-21ksoftirqd/200:35:232
23473995135,4cyclictest33-21ksoftirqd/222:30:252
23473995121,5cyclictest33-21ksoftirqd/223:20:262
2347399511,6cyclictest0-21swapper/223:49:202
2347399511,6cyclictest0-21swapper/220:29:222
2347399511,10cyclictest10826-21/usr/sbin/munin00:30:142
2347399510,5cyclictest33-21ksoftirqd/223:05:272
23472995111,4cyclictest25-21ksoftirqd/120:28:331
23471995116,5cyclictest9-21ksoftirqd/020:20:440
134491510,9ptp4l0-21swapper/122:34:071
134491510,6ptp4l41-21ksoftirqd/300:14:173
134491510,6ptp4l41-21ksoftirqd/300:14:173
134491510,5ptp4l0-21swapper/322:56:383
134491510,4ptp4l0-21swapper/122:05:571
134491510,4ptp4l0-21swapper/121:31:161
134491510,4ptp4l0-21swapper/000:30:530
2347399504,5cyclictest33-21ksoftirqd/221:00:132
2347399504,5cyclictest33-21ksoftirqd/200:00:192
2347399503,7cyclictest33-21ksoftirqd/222:10:132
2347399503,6cyclictest0-21swapper/223:00:152
2347399503,5cyclictest33-21ksoftirqd/220:50:012
2347399503,5cyclictest33-21ksoftirqd/220:05:012
2347399503,27cyclictest0-21swapper/221:21:172
2347399502,6cyclictest0-21swapper/221:25:182
2347399501,6cyclictest0-21swapper/200:05:232
2347399501,5cyclictest0-21swapper/221:30:292
2347399500,7cyclictest33-21ksoftirqd/219:45:232
2347399500,6cyclictest33-21ksoftirqd/220:50:252
2347399500,5cyclictest33-21ksoftirqd/222:00:202
134491500,5ptp4l0-21swapper/121:18:091
134491500,4ptp4l0-21swapper/200:13:092
134491500,4ptp4l0-21swapper/200:13:092
134491500,4ptp4l0-21swapper/121:05:511
134491500,4ptp4l0-21swapper/121:05:511
134491500,4ptp4l0-21swapper/023:29:060
134491500,3ptp4l0-21swapper/319:38:543
134491500,3ptp4l0-21swapper/120:52:561
2347399496,5cyclictest4299-21sed00:15:182
2347399494,6cyclictest33-21ksoftirqd/220:35:212
2347399494,6cyclictest33-21ksoftirqd/220:35:212
23473994922,5cyclictest33-21ksoftirqd/219:15:262
23473994922,5cyclictest33-21ksoftirqd/219:15:262
23472994920,2cyclictest25-21ksoftirqd/119:43:471
23471994936,10cyclictest13979-21kworker/0:023:45:010
23471994921,4cyclictest32423-21kworker/0:119:21:410
23471994920,4cyclictest28194-21kworker/0:200:35:070
134491490,4ptp4l0-21swapper/000:25:180
2347399484,9cyclictest33-21ksoftirqd/221:50:162
2347399484,5cyclictest33-21ksoftirqd/223:25:142
2347399484,4cyclictest33-21ksoftirqd/219:20:122
2347399483,6cyclictest33-21ksoftirqd/222:30:002
23472994812,9cyclictest25-21ksoftirqd/122:55:001
134491480,5ptp4l0-21swapper/119:10:011
134491480,4ptp4l0-21swapper/119:54:311
134491480,4ptp4l0-21swapper/100:19:521
134491480,4ptp4l0-21swapper/023:52:380
134491480,3ptp4l0-21swapper/100:20:391
134491480,3ptp4l0-21swapper/023:16:300
2347399471,7cyclictest321ktimersoftd/223:40:132
2347299476,8cyclictest25-21ksoftirqd/121:23:271
23472994715,9cyclictest25-21ksoftirqd/120:10:131
134491470,9ptp4l0-21swapper/022:34:220
134491470,4ptp4l0-21swapper/322:37:183
134491470,4ptp4l0-21swapper/019:31:340
2347399464,5cyclictest33-21ksoftirqd/219:55:182
2347299466,7cyclictest25-21ksoftirqd/120:20:251
2347299462,3cyclictest25-21ksoftirqd/123:20:271
2347299461,2cyclictest121rcu_preempt21:57:141
23472994611,5cyclictest25-21ksoftirqd/100:38:361
2347199463,4cyclictest9-21ksoftirqd/022:52:070
2347199461,3cyclictest121rcu_preempt20:55:080
134491460,5ptp4l0-21swapper/021:20:440
134491460,4ptp4l0-21swapper/020:02:260
134491460,3ptp4l0-21swapper/122:56:501
2347399453,7cyclictest33-21ksoftirqd/221:59:592
2347399453,6cyclictest0-21swapper/221:05:072
2347399453,6cyclictest0-21swapper/221:05:072
2347399452,6cyclictest0-21swapper/200:21:582
2347399450,7cyclictest321ktimersoftd/222:05:182
2347299454,3cyclictest121rcu_preempt23:18:531
2347299453,7cyclictest25-21ksoftirqd/123:51:421
23471994512,5cyclictest13979-21kworker/0:022:03:480
134491450,5ptp4l0-21swapper/322:05:143
134491450,4ptp4l0-21swapper/323:03:023
134491450,4ptp4l0-21swapper/022:40:320
134491450,4ptp4l0-21swapper/019:12:120
2347399443,6cyclictest0-21swapper/222:42:522
2347299441,3cyclictest25-21ksoftirqd/121:40:251
23472994413,9cyclictest25-21ksoftirqd/121:50:291
2347199448,6cyclictest9-21ksoftirqd/019:49:070
23471994439,2cyclictest9-21ksoftirqd/020:20:010
23471994426,7cyclictest9-21ksoftirqd/021:50:250
23471994412,4cyclictest9-21ksoftirqd/022:55:170
2347199440,7cyclictest9-21ksoftirqd/022:10:270
134491440,7ptp4l0-21swapper/319:51:053
134491440,4ptp4l0-21swapper/000:15:340
134491440,3ptp4l26440-21apt-get23:55:133
134491440,3ptp4l0-21swapper/322:16:183
134491440,11ptp4l0-21swapper/321:21:533
23472994338,3cyclictest25-21ksoftirqd/120:20:001
2347299432,2cyclictest121rcu_preempt23:12:341
23472994321,3cyclictest25-21ksoftirqd/122:00:241
23472994314,8cyclictest25-21ksoftirqd/122:28:531
23472994314,6cyclictest25-21ksoftirqd/119:59:001
23471994329,3cyclictest9-21ksoftirqd/023:45:140
23471994328,4cyclictest9-21ksoftirqd/022:45:270
23471994325,5cyclictest9-21ksoftirqd/000:00:300
134491430,5ptp4l2318-21gnome-shell22:48:583
134491430,4ptp4l28177-21users22:45:291
134491430,3ptp4l0-21swapper/022:29:000
2347299423,3cyclictest121rcu_preempt19:30:261
2347299421,3cyclictest121rcu_preempt00:28:501
2347199426,4cyclictest9-21ksoftirqd/020:40:010
2347199426,4cyclictest9-21ksoftirqd/020:40:010
23471994229,4cyclictest9-21ksoftirqd/020:40:170
23471994227,4cyclictest9-21ksoftirqd/023:35:260
23471994227,4cyclictest9-21ksoftirqd/019:25:180
23471994227,3cyclictest9-21ksoftirqd/020:30:290
23471994214,4cyclictest9-21ksoftirqd/023:55:190
2347199420,2cyclictest121rcu_preempt20:45:260
134491420,5ptp4l27470-21sensors_temp21:35:271
134491420,5ptp4l0-21swapper/323:50:213
134491420,5ptp4l0-21swapper/323:40:173
134491420,5ptp4l0-21swapper/320:10:123
134491420,5ptp4l0-21swapper/121:01:311
134491420,5ptp4l0-21swapper/022:15:190
134491420,5ptp4l0-21swapper/021:10:270
134491420,5ptp4l0-21swapper/019:35:130
134491420,4ptp4l15678-21meminfo22:20:221
134491420,3ptp4l30742-21apt-get21:45:120
134491420,3ptp4l2318-21gnome-shell20:04:581
134491420,10ptp4l0-21swapper/320:50:563
23472994127,4cyclictest25-21ksoftirqd/123:39:101
23472994126,4cyclictest25-21ksoftirqd/123:30:191
23472994126,3cyclictest25-21ksoftirqd/120:35:171
23472994126,3cyclictest25-21ksoftirqd/120:35:171
23472994125,4cyclictest25-21ksoftirqd/120:45:581
23472994125,4cyclictest25-21ksoftirqd/119:26:591
23471994124,7cyclictest9-21ksoftirqd/022:35:210
134491410,6ptp4l29329-21proc_pri19:20:243
134491410,4ptp4l29101-21df_inode22:50:143
134491410,4ptp4l14563-21apt-get21:10:123
134491410,4ptp4l0-21swapper/320:05:113
134491410,4ptp4l0-21swapper/320:05:113
134491410,4ptp4l0-21swapper/300:15:193
134491410,4ptp4l0-21swapper/100:05:241
134491410,3ptp4l8544-21apt-get00:25:133
134491410,3ptp4l32412-21users21:45:313
134491410,3ptp4l11878-21apt-get19:55:103
23472994026,3cyclictest25-21ksoftirqd/123:42:391
23472994024,3cyclictest25-21ksoftirqd/120:08:581
23472994024,3cyclictest25-21ksoftirqd/120:08:581
2347299401,2cyclictest121rcu_preempt00:01:381
23471994035,3cyclictest9-21ksoftirqd/020:50:140
2347199403,4cyclictest9-21ksoftirqd/000:10:010
2347199403,4cyclictest9-21ksoftirqd/000:10:010
23471994026,3cyclictest9-21ksoftirqd/023:20:280
23471994026,3cyclictest9-21ksoftirqd/020:05:320
23471994026,3cyclictest9-21ksoftirqd/020:05:320
23471994025,4cyclictest9-21ksoftirqd/021:40:240
23471994025,3cyclictest9-21ksoftirqd/023:10:230
23471994025,3cyclictest9-21ksoftirqd/019:55:230
23471994024,4cyclictest9-21ksoftirqd/023:30:270
134491400,5ptp4l0-21swapper/320:55:183
134491400,5ptp4l0-21swapper/319:10:293
134491400,5ptp4l0-21swapper/119:35:241
134491400,4ptp4l2347499cyclictest19:17:283
134491400,4ptp4l2347499cyclictest19:17:283
134491400,4ptp4l2318-21gnome-shell22:42:583
134491400,4ptp4l0-21swapper/300:35:173
134491400,4ptp4l0-21swapper/123:55:311
134491400,4ptp4l0-21swapper/000:05:270
23472993928,9cyclictest25-21ksoftirqd/121:10:281
23472993921,8cyclictest25-21ksoftirqd/123:00:141
23471993926,3cyclictest9-21ksoftirqd/019:40:250
23471993925,3cyclictest9-21ksoftirqd/021:30:240
134491390,5ptp4l22402-21taskset21:25:190
134491390,5ptp4l0-21swapper/323:35:153
134491390,5ptp4l0-21swapper/320:16:513
134491390,4ptp4l6784-21ntp_states23:10:223
134491390,4ptp4l12617-21iostat21:05:193
134491390,4ptp4l12617-21iostat21:05:193
134491390,4ptp4l0-21swapper/323:20:193
134491390,4ptp4l0-21swapper/323:15:333
134491390,4ptp4l0-21swapper/323:05:253
134491390,4ptp4l0-21swapper/322:00:053
134491390,4ptp4l0-21swapper/321:44:143
134491390,4ptp4l0-21swapper/321:35:153
134491390,4ptp4l0-21swapper/320:20:233
134491390,4ptp4l0-21swapper/320:00:253
134491390,4ptp4l0-21swapper/300:34:133
134491390,4ptp4l0-21swapper/300:20:183
134491390,4ptp4l0-21swapper/123:46:521
134491390,4ptp4l0-21swapper/122:35:481
134491390,4ptp4l0-21swapper/122:10:261
134491390,4ptp4l0-21swapper/119:19:091
134491390,4ptp4l0-21swapper/119:19:091
134491390,4ptp4l0-21swapper/100:34:171
134491390,4ptp4l0-21swapper/100:10:561
134491390,4ptp4l0-21swapper/100:10:551
134491390,4ptp4l0-21swapper/023:09:040
134491390,4ptp4l0-21swapper/019:17:400
134491390,4ptp4l0-21swapper/019:17:400
134491390,3ptp4l924-21diskstats21:50:163
134491390,3ptp4l8392-21ntp_states19:45:233
134491390,3ptp4l8228-21meminfo19:45:201
134491390,3ptp4l22546-21ls21:25:221
134491380,5ptp4l0-21swapper/321:25:273
134491380,4ptp4l30371-21cat20:35:003
134491380,4ptp4l30371-21cat20:35:003
134491380,4ptp4l0-21swapper/321:30:183
134491380,4ptp4l0-21swapper/321:17:393
134491380,4ptp4l0-21swapper/319:25:053
134491380,4ptp4l0-21swapper/300:03:353
134491380,4ptp4l0-21swapper/021:55:190
134491380,4ptp4l0-21swapper/020:10:530
134491380,3ptp4l0-21swapper/120:40:591
134491370,4ptp4l0-21swapper/323:45:073
134491370,4ptp4l0-21swapper/300:05:073
213862154,6sleep20-21swapper/219:05:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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