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2026-03-06 - 18:14
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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 Fri Mar 06, 2026 12:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
982121700,6sleep02191699cyclictest11:20:210
2268621430,4sleep32191999cyclictest10:40:123
3177921420,7sleep22191899cyclictest08:40:172
2141021180,4sleep22191899cyclictest10:35:262
119042760,5sleep10-21swapper/110:15:191
134491630,5ptp4l0-21swapper/010:20:270
134491620,3ptp4l0-21swapper/212:25:302
21919996137,4cyclictest41-21ksoftirqd/312:33:093
21918996128,4cyclictest33-21ksoftirqd/209:40:002
158202610,5sleep10-21swapper/109:15:191
134491600,4ptp4l0-21swapper/107:15:211
134491590,4ptp4l0-21swapper/311:16:573
134491580,4ptp4l0-21swapper/009:55:240
134491580,4ptp4l0-21swapper/008:54:330
134491580,3ptp4l0-21swapper/112:25:141
134491580,3ptp4l0-21swapper/009:05:190
134491580,3ptp4l0-21swapper/007:50:170
21918995726,4cyclictest33-21ksoftirqd/212:25:002
134491570,4ptp4l0-21swapper/207:50:212
134491570,3ptp4l0-21swapper/110:35:281
134491570,3ptp4l0-21swapper/109:10:251
134491570,3ptp4l0-21swapper/010:50:160
134491570,3ptp4l0-21swapper/010:01:410
21919995615,7cyclictest41-21ksoftirqd/308:21:303
21918995624,3cyclictest33-21ksoftirqd/211:15:002
21919995527,4cyclictest41-21ksoftirqd/310:12:533
21919995524,3cyclictest41-21ksoftirqd/308:10:013
21919995521,4cyclictest41-21ksoftirqd/311:10:003
21918995524,4cyclictest33-21ksoftirqd/207:58:162
21918995521,4cyclictest33-21ksoftirqd/208:40:012
21919995437,2cyclictest41-21ksoftirqd/307:25:223
21919995418,7cyclictest41-21ksoftirqd/308:48:433
21919995414,9cyclictest41-21ksoftirqd/311:27:253
21918995424,4cyclictest33-21ksoftirqd/210:43:072
21918995423,3cyclictest33-21ksoftirqd/209:10:272
134491540,3ptp4l0-21swapper/011:34:490
134491540,3ptp4l0-21swapper/008:00:480
2191999532,7cyclictest0-21swapper/307:20:303
21919995318,8cyclictest41-21ksoftirqd/310:00:183
21918995318,4cyclictest33-21ksoftirqd/207:45:012
134491530,4ptp4l0-21swapper/111:20:061
247292520,1sleep124731-21date11:55:001
21919995236,4cyclictest41-21ksoftirqd/310:17:123
21919995220,7cyclictest41-21ksoftirqd/312:15:133
21919995213,9cyclictest41-21ksoftirqd/308:35:193
21918995223,4cyclictest33-21ksoftirqd/209:41:302
134491520,3ptp4l0-21swapper/109:21:121
21919995119,6cyclictest41-21ksoftirqd/310:56:123
21918995137,11cyclictest33-21ksoftirqd/209:25:002
21918995123,3cyclictest33-21ksoftirqd/210:55:292
21918995121,5cyclictest33-21ksoftirqd/207:27:482
21918995116,4cyclictest33-21ksoftirqd/207:15:242
134491510,9ptp4l20437-21irqstats07:05:240
134491510,5ptp4l0-21swapper/107:09:161
134491510,4ptp4l0-21swapper/012:33:420
134491510,3ptp4l10967-21fschecks_time09:05:161
2191999508,7cyclictest41-21ksoftirqd/309:40:003
2191999501,7cyclictest121rcu_preempt11:20:203
21919995011,3cyclictest41-21ksoftirqd/312:05:213
21919995010,7cyclictest41-21ksoftirqd/310:45:083
21918995022,4cyclictest33-21ksoftirqd/209:27:302
21918995021,8cyclictest33-21ksoftirqd/209:04:232
21918995019,3cyclictest33-21ksoftirqd/211:10:002
134691500,4getstats0-21swapper/310:30:183
134491500,4ptp4l0-21swapper/110:51:211
134491500,4ptp4l0-21swapper/108:49:531
134491500,4ptp4l0-21swapper/011:08:340
134491500,3ptp4l0-21swapper/111:10:251
134491500,3ptp4l0-21swapper/009:36:320
21919994940,3cyclictest41-21ksoftirqd/311:46:113
2191899497,8cyclictest33-21ksoftirqd/208:00:182
21918994922,4cyclictest33-21ksoftirqd/212:16:062
21918994920,4cyclictest33-21ksoftirqd/208:21:272
21918994919,4cyclictest33-21ksoftirqd/207:10:182
21918994919,3cyclictest33-21ksoftirqd/211:25:192
134491490,9ptp4l0-21swapper/009:33:030
134491490,4ptp4l0-21swapper/210:52:462
134491490,4ptp4l0-21swapper/111:00:541
134491490,4ptp4l0-21swapper/108:59:571
134491490,4ptp4l0-21swapper/009:14:490
134491490,4ptp4l0-21swapper/008:11:340
134491490,3ptp4l0-21swapper/109:29:141
134491490,3ptp4l0-21swapper/008:19:030
310912480,4sleep10-21swapper/110:55:271
2191999482,6cyclictest121rcu_preempt08:00:013
21919994826,13cyclictest41-21ksoftirqd/310:25:133
21919994819,8cyclictest41-21ksoftirqd/309:40:253
21919994815,9cyclictest41-21ksoftirqd/308:00:153
2191999481,2cyclictest121rcu_preempt10:40:013
2191999480,3cyclictest41-21ksoftirqd/307:39:593
21918994822,5cyclictest33-21ksoftirqd/208:18:062
21918994820,3cyclictest33-21ksoftirqd/207:20:192
21918994814,4cyclictest33-21ksoftirqd/212:11:502
21918994813,4cyclictest33-21ksoftirqd/212:33:572
134491480,4ptp4l0-21swapper/210:48:432
134491480,4ptp4l0-21swapper/108:43:471
134491480,4ptp4l0-21swapper/108:05:011
134491480,3ptp4l0-21swapper/308:10:163
134491480,3ptp4l0-21swapper/108:50:271
134491480,17ptp4l0-21swapper/008:29:370
2191999475,3cyclictest41-21ksoftirqd/310:05:183
2191999475,2cyclictest41-21ksoftirqd/309:09:533
21919994736,4cyclictest41-21ksoftirqd/307:15:593
2191999473,3cyclictest121rcu_preempt09:45:223
2191999473,2cyclictest41-21ksoftirqd/311:55:223
2191999471,3cyclictest121rcu_preempt07:47:343
2191999471,2cyclictest41-21ksoftirqd/308:30:133
2191999470,3cyclictest121rcu_preempt12:24:023
2191999470,3cyclictest121rcu_preempt11:04:023
21918994718,4cyclictest33-21ksoftirqd/212:03:072
134491470,4ptp4l0-21swapper/110:42:201
134491470,4ptp4l0-21swapper/108:37:181
134491470,4ptp4l0-21swapper/010:17:540
134491470,4ptp4l0-21swapper/009:49:490
134491470,4ptp4l0-21swapper/009:04:050
134491470,4ptp4l0-21swapper/008:57:160
134491470,3ptp4l0-21swapper/208:33:352
134491470,12ptp4l26979-21latency_hist12:00:002
134491470,12ptp4l0-21swapper/012:02:480
2191999464,5cyclictest41-21ksoftirqd/309:50:123
2191999464,3cyclictest121rcu_preempt11:55:003
2191999463,2cyclictest121rcu_preempt12:35:193
21919994632,3cyclictest41-21ksoftirqd/309:19:533
21919994631,7cyclictest41-21ksoftirqd/311:10:363
21919994631,4cyclictest41-21ksoftirqd/312:00:253
21919994631,4cyclictest41-21ksoftirqd/309:59:563
2191999462,3cyclictest41-21ksoftirqd/307:50:263
21919994620,3cyclictest41-21ksoftirqd/308:25:183
2191999461,3cyclictest121rcu_preempt11:44:383
2191999461,3cyclictest121rcu_preempt09:25:353
2191999461,3cyclictest121rcu_preempt08:40:043
21918994613,6cyclictest33-21ksoftirqd/207:39:152
134491460,4ptp4l0-21swapper/312:13:263
134491460,4ptp4l0-21swapper/112:09:311
134491460,4ptp4l0-21swapper/007:58:220
134491460,3ptp4l0-21swapper/010:34:390
134491460,3ptp4l0-21swapper/007:34:180
134491460,10ptp4l0-21swapper/010:11:150
2191999455,2cyclictest41-21ksoftirqd/309:11:543
21919994540,2cyclictest41-21ksoftirqd/309:00:003
2191999453,3cyclictest41-21ksoftirqd/307:10:223
21919994532,3cyclictest41-21ksoftirqd/308:50:173
21919994531,3cyclictest41-21ksoftirqd/311:30:113
2191999451,3cyclictest121rcu_preempt09:32:443
2191999450,3cyclictest121rcu_preempt10:20:463
2191999450,2cyclictest121rcu_preempt07:32:533
21918994533,3cyclictest33-21ksoftirqd/210:10:222
21918994517,4cyclictest33-21ksoftirqd/211:34:512
21918994516,4cyclictest33-21ksoftirqd/212:09:082
21918994515,4cyclictest33-21ksoftirqd/211:20:192
2191899451,2cyclictest121rcu_preempt12:35:122
134491450,4ptp4l0-21swapper/211:41:082
134491450,4ptp4l0-21swapper/110:46:071
134491450,3ptp4l0-21swapper/112:16:041
2191999443,3cyclictest41-21ksoftirqd/308:15:183
2191999442,5cyclictest41-21ksoftirqd/312:25:163
2191999442,3cyclictest41-21ksoftirqd/311:35:203
2191999440,3cyclictest121rcu_preempt10:52:273
21918994416,4cyclictest33-21ksoftirqd/208:48:402
21918994415,6cyclictest33-21ksoftirqd/208:27:082
21918994415,4cyclictest33-21ksoftirqd/210:30:242
21918994415,4cyclictest33-21ksoftirqd/209:55:172
21918994412,6cyclictest33-21ksoftirqd/209:15:062
134491440,9ptp4l0-21swapper/210:02:382
134491440,9ptp4l0-21swapper/010:55:360
134491440,9ptp4l0-21swapper/007:47:420
134491440,5ptp4l0-21swapper/211:15:122
134491440,4ptp4l0-21swapper/207:34:462
134491440,4ptp4l0-21swapper/011:48:360
134491440,4ptp4l0-21swapper/011:13:380
134491440,3ptp4l0-21swapper/208:10:392
134491440,3ptp4l0-21swapper/111:32:081
134491440,3ptp4l0-21swapper/009:25:240
134491440,10ptp4l0-21swapper/107:51:201
2191999430,7cyclictest17791-21tr09:20:133
2191999430,2cyclictest121rcu_preempt07:44:123
2191899439,3cyclictest33-21ksoftirqd/209:50:162
21918994311,5cyclictest33-21ksoftirqd/208:55:482
134491430,9ptp4l0-21swapper/007:29:330
134491430,6ptp4l0-21swapper/012:19:220
134491430,5ptp4l0-21swapper/107:40:231
134491430,5ptp4l0-21swapper/010:05:130
134491430,4ptp4l0-21swapper/208:07:362
134491430,3ptp4l6721-21ls07:45:191
134491430,3ptp4l0-21swapper/009:41:590
2191999423,2cyclictest121rcu_preempt09:02:473
21918994237,3cyclictest33-21ksoftirqd/211:40:002
21918994237,2cyclictest33-21ksoftirqd/209:09:592
21918994217,4cyclictest33-21ksoftirqd/211:03:152
134491420,5ptp4l19101-21/usr/sbin/munin11:40:200
134491420,5ptp4l0-21swapper/110:20:191
134491420,4ptp4l447-21meminfo11:00:210
134491420,4ptp4l18231-21df11:40:121
134491420,3ptp4l26505-21apt-get08:30:131
134491420,3ptp4l2318-21gnome-shell12:02:581
134491420,3ptp4l15705-21apt-get11:35:100
134491420,3ptp4l0-21swapper/007:15:210
2191899418,4cyclictest33-21ksoftirqd/210:21:342
2191899410,2cyclictest121rcu_preempt08:50:182
134491410,5ptp4l0-21swapper/108:15:171
134491410,5ptp4l0-21swapper/108:10:121
134491410,5ptp4l0-21swapper/011:15:210
134491410,4ptp4l8816-21df10:10:131
134491410,4ptp4l0-21swapper/112:30:211
134491410,4ptp4l0-21swapper/012:25:240
134491410,4ptp4l0-21swapper/011:51:330
134491410,3ptp4l3406-21ls11:05:261
134491410,3ptp4l27099-21apt-get09:40:121
134491410,3ptp4l26238-21users09:35:281
134491410,3ptp4l2318-21gnome-shell11:25:580
134491410,3ptp4l15518-21apt-get10:25:141
134491410,3ptp4l1264-21sshd09:53:471
134491410,3ptp4l0-21swapper/008:22:040
21918994035,3cyclictest33-21ksoftirqd/210:25:212
21918994034,3cyclictest33-21ksoftirqd/210:15:582
134491400,5ptp4l0-21swapper/111:35:251
134491400,5ptp4l0-21swapper/012:06:070
134491400,5ptp4l0-21swapper/009:50:110
134491400,4ptp4l3914-21hddtemp_smartct07:40:150
134491400,4ptp4l28240-21users07:20:330
134491400,4ptp4l17039-21apt08:09:590
134491400,4ptp4l0-21swapper/211:54:552
134491400,4ptp4l0-21swapper/109:55:181
134491400,4ptp4l0-21swapper/109:45:171
134491400,4ptp4l0-21swapper/107:20:321
134491400,4ptp4l0-21swapper/012:37:340
134491400,4ptp4l0-21swapper/012:11:570
134491400,4ptp4l0-21swapper/011:55:160
134491400,4ptp4l0-21swapper/008:30:350
134491400,4ptp4l0-21swapper/007:10:320
134491400,3ptp4l31421-21df_inode08:40:140
134491400,3ptp4l24920-21apt-get11:55:121
134491400,3ptp4l24416-21df08:25:121
134491400,3ptp4l18783-21ntp_states09:20:210
134491400,3ptp4l1403-21df_inode07:35:150
134491400,3ptp4l1361-21df_inode08:45:160
134491400,2ptp4l2318-21gnome-shell11:28:591
21918993928,3cyclictest33-21ksoftirqd/207:47:412
134491390,4ptp4l23315-21irqstats10:40:170
134491390,4ptp4l12029-21/usr/sbin/munin12:35:211
134491390,4ptp4l0-21swapper/211:45:502
134491390,4ptp4l0-21swapper/210:05:012
134491390,4ptp4l0-21swapper/209:45:022
134491390,4ptp4l0-21swapper/209:31:232
134491390,4ptp4l0-21swapper/112:23:331
134491390,4ptp4l0-21swapper/111:15:201
134491390,4ptp4l0-21swapper/110:05:111
134491390,4ptp4l0-21swapper/110:04:031
134491390,4ptp4l0-21swapper/109:30:171
134491390,4ptp4l0-21swapper/109:03:591
134491390,4ptp4l0-21swapper/107:55:161
134491390,4ptp4l0-21swapper/012:20:240
134491390,4ptp4l0-21swapper/010:45:280
134491390,4ptp4l0-21swapper/010:37:100
134491390,4ptp4l0-21swapper/008:38:200
134491390,3ptp4l32038-21df12:10:121
134491390,3ptp4l22481-21iostat_ios08:20:181
134491390,3ptp4l18342-21if_enp1s010:30:181
134491390,3ptp4l12776-21/usr/sbin/munin08:00:141
134491390,3ptp4l0-21swapper/111:48:371
134491390,3ptp4l0-21swapper/009:16:010
134491380,4ptp4l30031-21grep07:25:221
134491380,4ptp4l0-21swapper/107:36:321
134491380,4ptp4l0-21swapper/107:30:141
134491380,4ptp4l0-21swapper/107:13:151
134491380,4ptp4l0-21swapper/010:25:010
215372123,4sleep30-21swapper/307:08:533
213122124,4sleep20-21swapper/207:06:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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