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2026-05-16 - 16:16
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sat May 16, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22364997735,4cyclictest41-21ksoftirqd/307:35:003
2236499712,31cyclictest0-21swapper/310:52:093
22364997027,8cyclictest41-21ksoftirqd/310:45:233
134491700,5ptp4l0-21swapper/011:30:110
22364996928,4cyclictest41-21ksoftirqd/312:10:003
22363996938,3cyclictest33-21ksoftirqd/208:50:002
22363996933,5cyclictest33-21ksoftirqd/210:30:012
22364996826,9cyclictest41-21ksoftirqd/310:40:243
22364996731,3cyclictest41-21ksoftirqd/310:10:233
2236499672,32cyclictest0-21swapper/307:55:343
22363996634,3cyclictest33-21ksoftirqd/209:25:002
22363996632,4cyclictest33-21ksoftirqd/212:24:592
22363996632,4cyclictest33-21ksoftirqd/211:45:152
22364996530,7cyclictest41-21ksoftirqd/309:40:213
2236499652,31cyclictest0-21swapper/309:00:233
2236499652,30cyclictest0-21swapper/310:20:273
22364996521,4cyclictest41-21ksoftirqd/308:35:273
22363996524,4cyclictest33-21ksoftirqd/211:15:132
22363996434,3cyclictest33-21ksoftirqd/208:00:292
22363996433,3cyclictest33-21ksoftirqd/211:25:272
22363996428,9cyclictest33-21ksoftirqd/207:10:182
22364996331,7cyclictest41-21ksoftirqd/308:25:233
22364996329,3cyclictest41-21ksoftirqd/310:35:223
22364996327,9cyclictest41-21ksoftirqd/309:20:193
2236499632,27cyclictest0-21swapper/312:35:163
22363996331,4cyclictest33-21ksoftirqd/207:40:172
22363996329,4cyclictest33-21ksoftirqd/209:35:002
22363996323,20cyclictest33-21ksoftirqd/209:10:012
22364996231,10cyclictest41-21ksoftirqd/309:15:203
22364996230,9cyclictest41-21ksoftirqd/308:30:253
22364996230,8cyclictest41-21ksoftirqd/309:45:213
22364996230,3cyclictest41-21ksoftirqd/307:25:253
22363996232,3cyclictest33-21ksoftirqd/210:30:162
22363996231,2cyclictest33-21ksoftirqd/209:38:572
22363996229,4cyclictest33-21ksoftirqd/210:45:002
22363996224,4cyclictest33-21ksoftirqd/212:30:132
22363996222,11cyclictest33-21ksoftirqd/209:45:282
2236299628,7cyclictest32196-21tr08:40:001
22364996129,5cyclictest41-21ksoftirqd/309:30:243
22364996121,3cyclictest41-21ksoftirqd/308:50:253
22363996133,3cyclictest33-21ksoftirqd/208:05:002
22363996132,3cyclictest33-21ksoftirqd/212:07:132
22363996130,3cyclictest33-21ksoftirqd/210:05:262
22363996128,4cyclictest33-21ksoftirqd/208:20:242
22363996125,9cyclictest33-21ksoftirqd/211:55:152
22364996030,4cyclictest41-21ksoftirqd/310:59:533
22363996027,7cyclictest33-21ksoftirqd/208:54:052
22363996026,3cyclictest33-21ksoftirqd/208:30:142
22363996024,4cyclictest33-21ksoftirqd/210:10:212
22363996024,3cyclictest33-21ksoftirqd/208:10:192
134491600,4ptp4l0-21swapper/110:10:181
22363995929,4cyclictest33-21ksoftirqd/207:45:182
22363995920,3cyclictest33-21ksoftirqd/211:40:182
2236299597,6cyclictest1890-21unixbench_singl12:10:301
134491590,3ptp4l0-21swapper/012:31:020
134491590,18ptp4l8129-21ntp_states08:55:240
2236499584,8cyclictest41-21ksoftirqd/307:15:143
22364995827,9cyclictest41-21ksoftirqd/310:05:163
22364995820,3cyclictest41-21ksoftirqd/310:25:163
22363995842,3cyclictest33-21ksoftirqd/212:25:222
22363995825,3cyclictest33-21ksoftirqd/209:55:232
2236299587,7cyclictest27118-21grep08:25:291
2236299587,6cyclictest9659-21df_abs11:20:151
2236299586,6cyclictest29250-21switchtime10:50:251
22364995731,4cyclictest41-21ksoftirqd/310:18:123
22364995730,3cyclictest41-21ksoftirqd/308:05:003
22364995727,8cyclictest41-21ksoftirqd/312:30:203
22364995726,9cyclictest41-21ksoftirqd/311:35:223
22364995726,4cyclictest41-21ksoftirqd/307:20:153
22364995725,4cyclictest41-21ksoftirqd/312:10:173
2236499572,3cyclictest121rcu_preempt10:02:303
2236399577,3cyclictest33-21ksoftirqd/207:19:592
22363995730,4cyclictest33-21ksoftirqd/210:15:182
22363995727,3cyclictest33-21ksoftirqd/208:40:192
2236399572,29cyclictest0-21swapper/210:46:592
2236299577,6cyclictest22950-21sed09:30:001
2236299570,15cyclictest0-21swapper/109:10:011
22364995628,3cyclictest41-21ksoftirqd/309:53:423
22364995626,9cyclictest41-21ksoftirqd/308:45:243
22364995613,7cyclictest41-21ksoftirqd/307:45:273
22363995630,8cyclictest33-21ksoftirqd/212:15:012
22363995630,7cyclictest33-21ksoftirqd/209:00:272
22363995629,4cyclictest33-21ksoftirqd/208:20:002
22363995626,3cyclictest33-21ksoftirqd/209:25:272
2236299567,6cyclictest7655-21fschecks_time12:25:161
2236299566,6cyclictest7604-21irqrtprio08:55:191
2236299563,10cyclictest13144-21sed08:00:001
2236299561,11cyclictest31601-21timerandwakeup12:05:261
2236299560,15cyclictest0-21swapper/109:10:151
134491560,4ptp4l0-21swapper/308:15:323
134491560,4ptp4l0-21swapper/011:25:070
134491560,4ptp4l0-21swapper/007:20:350
134491560,3ptp4l0-21swapper/107:20:031
2236399553,6cyclictest121rcu_preempt11:05:012
22363995536,3cyclictest33-21ksoftirqd/208:29:082
22363995525,4cyclictest33-21ksoftirqd/211:10:142
2236299559,13cyclictest0-21swapper/112:00:251
2236299553,8cyclictest28215-21cut08:30:161
2236299552,12cyclictest6615-21sed12:20:291
2236299551,16cyclictest4794-21cat12:20:001
2236299551,11cyclictest1846-21cpuspeed_turbos07:35:151
2236299550,8cyclictest2067-21latency_hist08:45:001
2236499543,6cyclictest0-21swapper/307:37:563
22364995427,9cyclictest41-21ksoftirqd/312:20:263
22364995427,8cyclictest41-21ksoftirqd/307:40:153
22364995425,7cyclictest41-21ksoftirqd/312:27:003
2236499542,11cyclictest0-21swapper/311:50:103
2236499542,11cyclictest0-21swapper/311:21:153
2236499542,10cyclictest0-21swapper/311:40:073
2236499542,10cyclictest0-21swapper/311:04:013
2236399544,3cyclictest33-21ksoftirqd/207:25:222
22363995423,9cyclictest33-21ksoftirqd/212:00:172
2236299546,7cyclictest17186-21grep10:25:201
2236299540,16cyclictest18916-21df_abs10:30:141
2236499532,7cyclictest0-21swapper/311:48:303
2236499532,7cyclictest0-21swapper/311:28:243
22364995325,7cyclictest41-21ksoftirqd/308:55:193
2236499532,11cyclictest0-21swapper/311:18:093
2236499532,10cyclictest0-21swapper/312:04:213
2236499532,10cyclictest0-21swapper/309:05:463
22364995311,4cyclictest41-21ksoftirqd/309:35:163
22363995320,9cyclictest33-21ksoftirqd/210:50:212
2236299537,7cyclictest14062-21expr10:20:141
2236299537,6cyclictest6065-21cat10:00:271
2236299536,7cyclictest16718-21fschecks_time11:35:171
2236299536,6cyclictest27970-21df_abs09:40:141
2236299536,6cyclictest17237-21missed_timers09:15:211
2236299530,9cyclictest25051-21latency_hist08:25:011
2236299530,11cyclictest10940-21sed07:55:001
134491530,3ptp4l0-21swapper/311:56:103
2236499522,7cyclictest0-21swapper/308:41:313
2236499522,7cyclictest0-21swapper/308:00:113
22364995219,4cyclictest41-21ksoftirqd/311:10:123
2236399527,3cyclictest33-21ksoftirqd/211:35:142
2236399525,7cyclictest33-21ksoftirqd/210:20:182
2236399524,7cyclictest33-21ksoftirqd/211:30:242
2236399523,8cyclictest27012-21apt-get07:20:122
22363995221,7cyclictest33-21ksoftirqd/210:58:422
22363995217,6cyclictest33-21ksoftirqd/209:13:362
22363995216,5cyclictest33-21ksoftirqd/209:53:362
2236399520,5cyclictest33-21ksoftirqd/207:35:252
2236299525,6cyclictest26414-21sed11:55:191
2236299524,6cyclictest23044-21cut07:10:181
2236299523,10cyclictest6550-21grep07:45:151
2236299521,10cyclictest26330-21irqrtprio10:45:181
134491520,4ptp4l0-21swapper/007:16:410
134491520,3ptp4l0-21swapper/011:40:260
2236499514,3cyclictest41-21ksoftirqd/312:20:003
2236499512,7cyclictest41-21ksoftirqd/307:10:133
2236499512,10cyclictest0-21swapper/309:55:493
2236399516,6cyclictest121rcu_preempt10:05:002
22363995134,5cyclictest33-21ksoftirqd/208:35:292
22363995133,9cyclictest33-21ksoftirqd/210:35:192
22363995133,6cyclictest33-21ksoftirqd/207:50:242
22363995120,3cyclictest33-21ksoftirqd/208:55:142
2236399510,9cyclictest23227-21apt-get11:50:132
2236299516,6cyclictest8296-21mailstats10:05:271
2236299514,6cyclictest16267-21sed11:35:011
2236299514,6cyclictest0-21swapper/111:15:271
2236299513,9cyclictest31719-21cpuspeed_turbos07:30:151
2236299511,11cyclictest19272-21sed11:40:191
2236299511,10cyclictest475-21irqrtprio09:50:191
2236299510,15cyclictest0-21swapper/111:05:151
2236299510,10cyclictest30303-21sed07:25:211
134491510,4ptp4l0-21swapper/007:51:000
22363995034,4cyclictest33-21ksoftirqd/212:35:172
2236399502,7cyclictest0-21swapper/211:05:162
2236299506,9cyclictest5647-21ls07:40:251
2236299505,6cyclictest23211-21/usr/sbin/munin11:50:251
2236299502,11cyclictest23694-21tune2fs10:40:151
2236299500,11cyclictest9774-21ls12:30:141
134691500,10getstats9-21ksoftirqd/008:44:220
134491500,4ptp4l0-21swapper/008:21:280
134491500,3ptp4l0-21swapper/012:05:160
22364994921,9cyclictest41-21ksoftirqd/310:30:053
22364994914,8cyclictest41-21ksoftirqd/307:50:073
2236499490,6cyclictest41-21ksoftirqd/308:20:213
22363994933,5cyclictest33-21ksoftirqd/211:20:132
2236299496,6cyclictest5150-21fschecks_count11:10:131
2236299495,6cyclictest0-21swapper/109:35:211
2236299495,4cyclictest0-21swapper/111:45:141
2236299492,10cyclictest22468-21sed10:35:271
2236299491,6cyclictest31541-21timerandwakeup09:45:281
2236199497,16cyclictest134491ptp4l08:10:260
134691490,10getstats9-21ksoftirqd/008:34:030
134491490,3ptp4l0-21swapper/009:29:010
134491490,3ptp4l0-21swapper/007:46:110
2236499482,7cyclictest0-21swapper/309:25:563
2236499482,31cyclictest0-21swapper/309:13:233
2236499480,6cyclictest134491ptp4l08:10:193
22363994834,6cyclictest33-21ksoftirqd/209:15:182
22363994833,4cyclictest33-21ksoftirqd/212:15:272
22363994832,4cyclictest33-21ksoftirqd/208:00:002
2236299484,5cyclictest0-21swapper/112:35:201
2236299482,11cyclictest20567-21sed08:15:001
2236299480,7cyclictest0-21swapper/109:00:141
2236299480,10cyclictest25356-21irqrtprio07:15:191
22361994831,5cyclictest9-21ksoftirqd/007:35:000
134491480,6ptp4l20033-21apt-get07:05:141
134491480,4ptp4l0-21swapper/011:52:550
134491480,4ptp4l0-21swapper/007:14:530
22364994733,3cyclictest41-21ksoftirqd/311:30:243
22363994731,4cyclictest33-21ksoftirqd/209:40:192
2236399472,4cyclictest33-21ksoftirqd/207:31:142
134491470,6ptp4l2318-21gnome-shell07:07:580
2236499462,6cyclictest401ktimersoftd/311:10:013
2236299465,4cyclictest0-21swapper/108:45:181
134491460,4ptp4l0-21swapper/009:20:170
134491460,4ptp4l0-21swapper/008:52:560
2236299457,5cyclictest3750-21sed09:55:241
2236299455,4cyclictest0-21swapper/108:00:201
22361994541,3cyclictest9-21ksoftirqd/010:20:000
22361994540,3cyclictest9-21ksoftirqd/011:40:000
22361994539,3cyclictest9-21ksoftirqd/008:20:000
134691450,8getstats9-21ksoftirqd/010:28:220
134491450,3ptp4l0-21swapper/012:10:250
22362994411,2cyclictest137891phc2sys09:33:481
134691440,12getstats9-21ksoftirqd/009:06:510
134491440,1ptp4l0-21swapper/011:58:220
134691430,10getstats0-21swapper/011:22:560
134691430,10getstats0-21swapper/011:11:350
134691430,10getstats0-21swapper/009:32:280
134491430,4ptp4l0-21swapper/010:56:330
2236299420,10cyclictest0-21swapper/108:15:161
22361994236,3cyclictest9-21ksoftirqd/010:35:000
134691420,10getstats0-21swapper/009:13:110
134491420,9ptp4l0-21swapper/008:01:480
134491420,5ptp4l0-21swapper/012:20:190
134491420,5ptp4l0-21swapper/009:00:200
134491420,4ptp4l4448-21df_inode07:40:130
134491420,4ptp4l15398-21apt-get08:05:010
134491420,4ptp4l0-21swapper/010:46:240
2236299414,5cyclictest0-21swapper/110:20:011
2236299413,5cyclictest5664-21meminfo08:50:201
22361994136,3cyclictest9-21ksoftirqd/010:00:000
134691410,10getstats0-21swapper/007:29:560
134491410,5ptp4l0-21swapper/010:00:130
134491410,4ptp4l7273-21apt-get12:25:120
134491410,4ptp4l30993-21meminfo09:45:210
134491410,4ptp4l3079-21perl12:15:160
134491410,4ptp4l25036-21apt-get08:25:030
134491410,4ptp4l21226-21df_inode11:45:140
134491410,4ptp4l0-21swapper/111:00:201
134491410,4ptp4l0-21swapper/012:37:340
134491410,4ptp4l0-21swapper/010:10:040
134491410,3ptp4l24800-21ls10:40:270
22361994035,3cyclictest9-21ksoftirqd/010:35:190
22361994034,3cyclictest9-21ksoftirqd/011:15:180
134491400,5ptp4l20067-21/usr/sbin/munin09:20:271
134491400,5ptp4l0-21swapper/012:00:140
134491400,5ptp4l0-21swapper/009:35:220
134491400,4ptp4l0-21swapper/010:05:230
134491400,3ptp4l28593-21irqstats09:40:190
134491400,3ptp4l0-21swapper/008:37:450
22361993934,3cyclictest9-21ksoftirqd/011:05:130
134491390,4ptp4l0-21swapper/110:55:201
134491390,4ptp4l0-21swapper/108:05:251
134491390,4ptp4l0-21swapper/011:00:240
134491390,4ptp4l0-21swapper/010:51:100
134491390,4ptp4l0-21swapper/009:15:250
134491390,4ptp4l0-21swapper/008:47:160
134491390,4ptp4l0-21swapper/007:58:360
134491390,4ptp4l0-21swapper/007:36:580
134491390,3ptp4l0-21swapper/111:25:191
134491390,3ptp4l0-21swapper/009:50:250
46198380,5rtkit-daemon0-21swapper/307:05:093
134491380,4ptp4l0-21swapper/010:24:470
218672161,9sleep21301-21snmpd07:07:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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