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2026-04-30 - 16:48
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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 Thu Apr 30, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1066521730,5sleep03033899cyclictest10:00:120
1760021410,6sleep03033899cyclictest07:50:190
30341997534,8cyclictest41-21ksoftirqd/310:07:373
74212730,3sleep37414-21cron08:40:013
30341997140,3cyclictest41-21ksoftirqd/307:30:003
30338997134,9cyclictest9-21ksoftirqd/010:07:400
30338997127,9cyclictest9-21ksoftirqd/009:05:010
30338997125,8cyclictest9-21ksoftirqd/008:40:180
30341996525,8cyclictest41-21ksoftirqd/309:35:243
30341996433,7cyclictest41-21ksoftirqd/308:07:443
30341996431,8cyclictest41-21ksoftirqd/312:20:163
30341996429,8cyclictest41-21ksoftirqd/311:40:233
30341996424,8cyclictest41-21ksoftirqd/309:05:373
30341996331,4cyclictest41-21ksoftirqd/310:05:013
30341996329,4cyclictest41-21ksoftirqd/311:15:013
30341996329,4cyclictest41-21ksoftirqd/307:30:163
30341996325,8cyclictest41-21ksoftirqd/311:02:483
30341996325,8cyclictest41-21ksoftirqd/311:02:483
30341996325,7cyclictest41-21ksoftirqd/309:23:513
30341996324,7cyclictest41-21ksoftirqd/309:04:413
30341996324,7cyclictest41-21ksoftirqd/308:49:013
30341996322,7cyclictest41-21ksoftirqd/312:15:203
30338996332,4cyclictest9-21ksoftirqd/007:35:010
134491630,4ptp4l18948-21df10:15:131
30341996231,8cyclictest41-21ksoftirqd/311:50:013
30341996228,9cyclictest41-21ksoftirqd/307:50:173
30341996228,7cyclictest41-21ksoftirqd/308:55:003
30341996227,4cyclictest41-21ksoftirqd/308:00:003
30341996225,3cyclictest41-21ksoftirqd/309:10:163
30341996224,7cyclictest41-21ksoftirqd/312:34:023
30341996222,8cyclictest41-21ksoftirqd/311:31:453
30341996222,5cyclictest41-21ksoftirqd/310:55:253
30338996226,5cyclictest9-21ksoftirqd/012:00:240
30338996225,4cyclictest9-21ksoftirqd/010:55:130
30341996129,3cyclictest41-21ksoftirqd/308:30:223
30341996128,8cyclictest41-21ksoftirqd/310:55:003
30341996127,4cyclictest41-21ksoftirqd/310:40:013
30341996127,10cyclictest41-21ksoftirqd/312:00:183
30341996123,8cyclictest41-21ksoftirqd/311:38:113
30341996123,7cyclictest41-21ksoftirqd/307:40:263
30341996118,5cyclictest41-21ksoftirqd/307:35:163
30338996135,7cyclictest9-21ksoftirqd/010:44:000
134491610,4ptp4l0-21swapper/007:22:570
30341996023,7cyclictest41-21ksoftirqd/312:39:483
30341996023,7cyclictest41-21ksoftirqd/307:14:463
30338996028,5cyclictest9-21ksoftirqd/012:05:130
30338996026,3cyclictest9-21ksoftirqd/008:55:000
30341995932,7cyclictest41-21ksoftirqd/309:55:253
30341995927,6cyclictest41-21ksoftirqd/307:15:133
30341995926,7cyclictest41-21ksoftirqd/311:25:173
30341995924,8cyclictest41-21ksoftirqd/311:53:383
30341995922,9cyclictest41-21ksoftirqd/309:55:003
30341995920,8cyclictest41-21ksoftirqd/310:42:393
30338995933,4cyclictest9-21ksoftirqd/012:25:220
30338995932,7cyclictest9-21ksoftirqd/008:10:270
30338995929,5cyclictest9-21ksoftirqd/010:25:270
30338995928,6cyclictest9-21ksoftirqd/011:35:190
30338995926,5cyclictest9-21ksoftirqd/009:10:140
30338995923,3cyclictest9-21ksoftirqd/008:21:480
30338995921,4cyclictest9-21ksoftirqd/012:20:180
30341995822,7cyclictest41-21ksoftirqd/307:45:353
30341995821,7cyclictest41-21ksoftirqd/310:25:583
30341995816,7cyclictest41-21ksoftirqd/311:20:223
3033899586,6cyclictest9-21ksoftirqd/009:30:210
30338995829,5cyclictest9-21ksoftirqd/010:35:120
30338995823,5cyclictest9-21ksoftirqd/007:50:000
134491580,4ptp4l0-21swapper/308:03:483
134491580,4ptp4l0-21swapper/110:30:181
30341995721,8cyclictest41-21ksoftirqd/309:30:333
30341995719,8cyclictest41-21ksoftirqd/308:10:503
30341995719,7cyclictest41-21ksoftirqd/309:40:203
3034199570,6cyclictest121rcu_preempt11:58:293
30338995729,9cyclictest9-21ksoftirqd/012:40:010
134491570,3ptp4l0-21swapper/210:50:152
134491570,3ptp4l0-21swapper/111:27:031
30341995642,3cyclictest41-21ksoftirqd/312:25:273
30341995623,8cyclictest41-21ksoftirqd/311:15:133
30338995619,6cyclictest9-21ksoftirqd/009:40:180
30341995523,8cyclictest41-21ksoftirqd/308:15:273
30341995515,6cyclictest41-21ksoftirqd/307:20:183
30338995529,4cyclictest9-21ksoftirqd/007:40:160
30338995520,3cyclictest9-21ksoftirqd/008:08:420
134491550,3ptp4l0-21swapper/212:17:542
134491550,3ptp4l0-21swapper/207:30:502
134491550,3ptp4l0-21swapper/110:28:221
30341995426,9cyclictest41-21ksoftirqd/308:40:173
30341995422,6cyclictest41-21ksoftirqd/308:20:283
30341995419,8cyclictest41-21ksoftirqd/310:50:003
3033899544,3cyclictest9-21ksoftirqd/012:20:010
3033899543,6cyclictest9-21ksoftirqd/008:36:220
3033899543,6cyclictest9-21ksoftirqd/008:30:150
30338995423,3cyclictest9-21ksoftirqd/011:03:090
30338995423,3cyclictest9-21ksoftirqd/011:03:090
30338995421,6cyclictest9-21ksoftirqd/011:20:110
30338995420,3cyclictest9-21ksoftirqd/010:54:220
30338995417,7cyclictest9-21ksoftirqd/011:15:110
134491540,4ptp4l0-21swapper/207:07:512
134491540,4ptp4l0-21swapper/207:07:512
3034199536,3cyclictest41-21ksoftirqd/310:20:213
30341995333,2cyclictest41-21ksoftirqd/308:25:243
3034199532,7cyclictest41-21ksoftirqd/310:15:183
3033899535,6cyclictest9-21ksoftirqd/007:25:130
3033899534,6cyclictest9-21ksoftirqd/010:45:200
30338995321,3cyclictest9-21ksoftirqd/011:26:390
30338995319,5cyclictest9-21ksoftirqd/010:20:240
3033899525,5cyclictest9-21ksoftirqd/011:50:260
30338995217,5cyclictest9-21ksoftirqd/007:15:220
134491520,4ptp4l0-21swapper/211:40:212
134491520,4ptp4l0-21swapper/210:36:522
134491520,3ptp4l1759-21/usr/sbin/munin11:55:211
76382510,6sleep10-21swapper/112:10:111
30341995119,7cyclictest41-21ksoftirqd/311:06:093
3034199511,8cyclictest121rcu_preempt09:16:263
3033999515,8cyclictest25-21ksoftirqd/110:07:421
3033899514,6cyclictest9-21ksoftirqd/011:45:260
30338995125,6cyclictest9-21ksoftirqd/007:55:230
30338995118,3cyclictest9-21ksoftirqd/012:31:120
134491510,3ptp4l0-21swapper/112:26:041
3034199505,5cyclictest41-21ksoftirqd/312:05:243
30341995017,8cyclictest41-21ksoftirqd/310:13:073
30339995022,3cyclictest25-21ksoftirqd/108:36:231
3033899503,6cyclictest9-21ksoftirqd/011:55:160
30338995020,5cyclictest9-21ksoftirqd/009:20:000
30338995019,3cyclictest9-21ksoftirqd/009:46:300
134491500,4ptp4l0-21swapper/212:07:442
134491500,4ptp4l0-21swapper/007:09:210
134491500,4ptp4l0-21swapper/007:09:210
3034199493,3cyclictest121rcu_preempt10:31:283
3033899495,5cyclictest9-21ksoftirqd/009:55:250
3033899494,5cyclictest9-21ksoftirqd/010:35:000
30338994922,3cyclictest9-21ksoftirqd/009:38:490
30338994918,4cyclictest9-21ksoftirqd/007:14:480
3033899491,6cyclictest9-21ksoftirqd/008:25:230
134491490,4ptp4l0-21swapper/211:07:142
134491490,4ptp4l0-21swapper/209:17:382
134491490,4ptp4l0-21swapper/208:26:482
3034199483,3cyclictest121rcu_preempt08:58:203
3034199483,3cyclictest121rcu_preempt08:58:193
3034199482,6cyclictest0-21swapper/312:10:183
3034199481,8cyclictest41-21ksoftirqd/309:30:003
3033999483,6cyclictest25-21ksoftirqd/110:44:011
3033899484,3cyclictest9-21ksoftirqd/009:54:590
30338994837,2cyclictest9-21ksoftirqd/011:40:160
3033899483,2cyclictest121rcu_preempt08:00:280
3033899482,6cyclictest9-21ksoftirqd/008:15:240
3033899481,2cyclictest121rcu_preempt10:19:590
134491480,4ptp4l0-21swapper/212:00:022
134491480,4ptp4l0-21swapper/107:40:501
3034199476,5cyclictest41-21ksoftirqd/309:45:183
3033899475,3cyclictest9-21ksoftirqd/009:05:160
30338994721,3cyclictest9-21ksoftirqd/012:14:550
3033899471,4cyclictest0-21swapper/009:25:260
3033899470,5cyclictest9-21ksoftirqd/011:05:180
134491470,4ptp4l0-21swapper/209:21:152
134491470,4ptp4l0-21swapper/108:52:491
134491470,3ptp4l2346-21ntpd12:20:222
134491470,3ptp4l0-21swapper/111:05:081
3033899463,2cyclictest0-21swapper/008:45:290
3033899461,4cyclictest0-21swapper/011:10:280
3033899460,7cyclictest9-21ksoftirqd/007:40:010
3033899460,4cyclictest24639-21grep09:20:170
134491460,3ptp4l0-21swapper/107:17:301
134491460,12ptp4l0-21swapper/208:50:002
3033899453,5cyclictest0-21swapper/011:30:210
3033899452,3cyclictest9-21ksoftirqd/008:55:160
3033899452,3cyclictest9-21ksoftirqd/008:55:160
134491450,9ptp4l0-21swapper/211:26:452
134491450,4ptp4l0-21swapper/212:35:342
134491450,3ptp4l18738-21apt-get10:15:102
134491450,3ptp4l0-21swapper/208:09:392
134491450,19ptp4l0-21swapper/110:52:471
30339994439,3cyclictest25-21ksoftirqd/111:55:001
134491440,9ptp4l0-21swapper/210:56:242
134491440,9ptp4l0-21swapper/210:33:322
134491440,9ptp4l0-21swapper/209:02:072
134491440,9ptp4l0-21swapper/208:10:032
134491440,9ptp4l0-21swapper/208:02:012
134491440,3ptp4l0-21swapper/110:04:551
134491440,3ptp4l0-21swapper/107:38:061
134491440,10ptp4l0-21swapper/211:47:572
134491440,10ptp4l0-21swapper/211:02:062
134491440,10ptp4l0-21swapper/211:02:062
134491440,10ptp4l0-21swapper/209:12:242
30339994337,4cyclictest25-21ksoftirqd/108:00:001
3033899430,5cyclictest18626-21cat10:15:000
134491430,9ptp4l0-21swapper/211:33:592
134491430,9ptp4l0-21swapper/210:07:242
134491430,9ptp4l0-21swapper/207:55:532
134491430,4ptp4l2318-21gnome-shell07:51:591
134491430,4ptp4l2318-21gnome-shell07:09:581
134491430,4ptp4l2318-21gnome-shell07:09:581
134491430,4ptp4l21112-21apt-get10:20:082
134491430,3ptp4l0-21swapper/212:27:582
30339994237,3cyclictest25-21ksoftirqd/109:35:001
134491420,9ptp4l0-21swapper/208:59:142
134491420,9ptp4l0-21swapper/208:59:142
134491420,9ptp4l0-21swapper/207:41:162
134491420,8ptp4l0-21swapper/210:44:312
134491420,8ptp4l0-21swapper/208:32:492
134491420,5ptp4l0-21swapper/211:15:182
134491420,4ptp4l7540-21df_inode07:30:131
134491420,4ptp4l0-21swapper/211:10:222
134491420,3ptp4l9986-21apt-get08:45:131
134491420,3ptp4l9066-21ls11:00:291
134491420,3ptp4l9066-21ls11:00:291
134491420,3ptp4l31374-21apt-get09:35:102
134491420,3ptp4l26176-21apt-get11:40:111
134491420,11ptp4l0-21swapper/208:38:502
3033999411,4cyclictest25-21ksoftirqd/111:15:271
134491410,5ptp4l26875-21meminfo08:10:191
134491410,5ptp4l0-21swapper/209:05:182
134491410,5ptp4l0-21swapper/107:20:151
134491410,4ptp4l9909-21users09:55:291
134491410,4ptp4l29345-21ntp_states08:15:231
134491410,4ptp4l15785-21iostat09:00:171
134491410,4ptp4l0-21swapper/212:14:352
134491410,4ptp4l0-21swapper/107:11:581
134491410,3ptp4l5471-21diskstats10:55:161
134491410,3ptp4l401ktimersoftd/307:05:003
134491410,3ptp4l401ktimersoftd/307:05:003
134491410,3ptp4l23865-21apt-get11:35:141
134491410,3ptp4l23630-21apt-get08:05:121
134491410,3ptp4l21765-21hddtemp_smartct08:00:171
134491410,3ptp4l17286-21hddtemp_smartct12:30:151
134491410,3ptp4l12095-21apt-get11:10:131
134491410,3ptp4l0-21swapper/107:25:181
134491410,2ptp4l17227-21diskstats11:20:122
3033999406,3cyclictest25-21ksoftirqd/112:20:001
30339994035,2cyclictest25-21ksoftirqd/109:50:131
134491400,5ptp4l0-21swapper/108:55:091
134491400,5ptp4l0-21swapper/108:55:091
134491400,4ptp4l21111-21apt10:20:091
134491400,4ptp4l0-21swapper/211:59:192
134491400,4ptp4l0-21swapper/211:50:072
134491400,4ptp4l0-21swapper/210:46:552
134491400,4ptp4l0-21swapper/210:26:442
134491400,4ptp4l0-21swapper/210:10:232
134491400,4ptp4l0-21swapper/210:03:352
134491400,4ptp4l0-21swapper/209:55:352
134491400,4ptp4l0-21swapper/209:53:392
134491400,4ptp4l0-21swapper/207:54:592
134491400,4ptp4l0-21swapper/207:20:362
134491400,4ptp4l0-21swapper/112:05:181
134491400,4ptp4l0-21swapper/111:34:461
134491400,4ptp4l0-21swapper/109:25:261
134491400,3ptp4l4487-21irqstats09:45:181
134491400,3ptp4l32485-21ntp_states09:35:211
134491400,3ptp4l22462-21df_inode09:15:141
134491400,3ptp4l1594-21df_inode09:40:151
134491400,3ptp4l0-21swapper/209:29:272
134491400,3ptp4l0-21swapper/107:49:591
134491390,5ptp4l0-21swapper/207:35:272
134491390,4ptp4l17982-21ls10:10:281
134491390,4ptp4l0-21swapper/212:32:072
134491390,4ptp4l0-21swapper/209:46:342
134491390,4ptp4l0-21swapper/209:40:172
134491390,4ptp4l0-21swapper/209:30:242
134491390,4ptp4l0-21swapper/208:51:422
134491390,4ptp4l0-21swapper/208:22:172
134491390,4ptp4l0-21swapper/208:17:232
134491390,4ptp4l0-21swapper/207:45:312
134491390,4ptp4l0-21swapper/207:26:142
134491390,4ptp4l0-21swapper/207:16:182
134491390,4ptp4l0-21swapper/207:13:422
134491390,4ptp4l0-21swapper/112:35:131
134491390,4ptp4l0-21swapper/110:45:031
134491390,4ptp4l0-21swapper/109:13:401
134491390,4ptp4l0-21swapper/109:05:051
134491390,4ptp4l0-21swapper/108:30:191
134491390,3ptp4l24794-21diskstats09:20:181
134491390,3ptp4l0-21swapper/211:36:142
134491390,3ptp4l0-21swapper/110:38:211
134491380,4ptp4l0-21swapper/111:45:221
134491380,4ptp4l0-21swapper/108:20:011
134491380,3ptp4l3457-21fschecks_time12:00:151
134491380,3ptp4l18644-21sshd11:20:541
134491380,3ptp4l0-21swapper/208:40:352
134491380,3ptp4l0-21swapper/108:40:211
134491370,3ptp4l0-21swapper/112:23:271
134491370,3ptp4l0-21swapper/108:28:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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