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2026-07-16 - 16:56
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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 Thu Jul 16, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6921997314,10cyclictest25059-21taskset12:22:322
6921996914,10cyclictest1280-21taskset10:22:412
6921996911,16cyclictest6498-21df_abs09:25:132
6921996715,11cyclictest9678-21taskset08:22:412
6921996715,11cyclictest2605-21chrt08:06:292
6921996714,11cyclictest11024-21taskset07:15:512
6921996711,16cyclictest14625-21cut12:00:192
6921996711,10cyclictest13525-21ntp_states08:30:222
6921996710,10cyclictest212-21systemd-journal08:37:412
6919996730,6cyclictest9-21ksoftirqd/011:30:180
6921996614,11cyclictest21465-21taskset08:48:412
6921996614,11cyclictest17867-21taskset10:59:282
6921996611,11cyclictest7992-21missed_timers11:45:192
692299659,54cyclictest0-21swapper/309:46:493
6921996518,12cyclictest16172-21chrt07:29:592
6921996515,12cyclictest18804-21chrt08:41:432
6921996510,17cyclictest12033-21fschecks_count11:55:142
6921996510,10cyclictest6360-21date10:35:012
6919996531,6cyclictest9-21ksoftirqd/008:45:000
6921996419,11cyclictest27097-21chrt11:16:282
6921996419,10cyclictest3613-21taskset09:19:222
6921996417,17cyclictest29721-21ls10:15:122
6919996427,7cyclictest9-21ksoftirqd/007:25:280
6921996315,10cyclictest5933-21taskset09:24:232
6919996332,5cyclictest9-21ksoftirqd/008:25:250
6919996330,9cyclictest9-21ksoftirqd/010:50:180
692199628,11cyclictest1216-21switchtime11:30:262
6921996218,15cyclictest18018-21taskset12:05:592
6921996215,11cyclictest26634-21/usr/sbin/munin09:00:252
6921996215,11cyclictest26634-21/usr/sbin/munin09:00:252
6921996214,10cyclictest25362-21chrt07:47:042
6921996212,17cyclictest14206-21cat09:40:222
692099622,58cyclictest9344-21kworker/1:209:15:301
6919996229,5cyclictest9-21ksoftirqd/010:20:280
134491620,17ptp4l0-21swapper/109:00:231
134491620,17ptp4l0-21swapper/109:00:231
6922996112,47cyclictest0-21swapper/310:45:493
6919996131,4cyclictest9-21ksoftirqd/011:40:250
6919996129,5cyclictest9-21ksoftirqd/009:25:130
6919996124,3cyclictest9-21ksoftirqd/009:47:000
6919996122,3cyclictest9-21ksoftirqd/009:01:270
6919996122,3cyclictest9-21ksoftirqd/009:01:270
6921996018,10cyclictest18235-21taskset07:31:592
6921996017,11cyclictest6332-21chrt11:42:082
6921996012,16cyclictest27502-21awk07:50:262
6919996027,8cyclictest9-21ksoftirqd/008:25:000
6919996024,6cyclictest9-21ksoftirqd/009:20:190
692199599,10cyclictest22686-21cat10:00:132
6921995914,11cyclictest22269-21chrt09:58:582
6919995928,6cyclictest9-21ksoftirqd/007:20:180
6919995928,5cyclictest9-21ksoftirqd/012:25:010
6919995928,5cyclictest9-21ksoftirqd/008:55:210
6919995927,8cyclictest9-21ksoftirqd/008:10:000
6919995925,7cyclictest9-21ksoftirqd/011:20:160
6919995922,4cyclictest9-21ksoftirqd/011:51:240
134491590,4ptp4l0-21swapper/008:00:040
6921995812,8cyclictest15414-21apt-get10:55:002
6921995811,9cyclictest3212-21expr11:35:202
6921995811,9cyclictest3212-21expr11:35:202
6919995825,8cyclictest9-21ksoftirqd/012:05:160
6919995822,3cyclictest9-21ksoftirqd/010:31:170
134491580,5ptp4l692299cyclictest08:35:233
692199578,11cyclictest30514-21switchtime09:05:252
692199578,11cyclictest30514-21switchtime09:05:252
6921995718,35cyclictest12900-21chrt10:47:202
692199571,16cyclictest0-21swapper/209:35:212
6919995726,6cyclictest9-21ksoftirqd/012:25:220
6919995725,6cyclictest9-21ksoftirqd/007:50:260
6919995724,5cyclictest9-21ksoftirqd/011:55:260
134491570,4ptp4l0-21swapper/010:05:180
134491570,3ptp4l0-21swapper/108:45:271
692199569,17cyclictest20060-21timerandwakeup12:10:292
6921995611,7cyclictest8592-21apt-get09:30:112
692099567,47cyclictest25-21ksoftirqd/109:31:101
6919995625,5cyclictest9-21ksoftirqd/011:15:180
6921995519,11cyclictest29214-21chrt10:14:222
6921995511,7cyclictest24333-21apt-get08:55:122
691999553,4cyclictest9-21ksoftirqd/011:45:250
6919995522,6cyclictest9-21ksoftirqd/009:35:000
6921995418,11cyclictest29498-21chrt11:22:302
6921995417,12cyclictest22590-21chrt11:07:342
6921995411,7cyclictest29696-21mailstats07:55:282
6921995411,7cyclictest29696-21mailstats07:55:282
6919995429,3cyclictest9-21ksoftirqd/010:55:140
6919995421,5cyclictest9-21ksoftirqd/010:45:130
691999540,7cyclictest9-21ksoftirqd/012:20:010
134491540,5ptp4l0-21swapper/007:05:540
134491540,2ptp4l0-21swapper/111:42:371
6921995317,34cyclictest13442-21taskset07:22:092
6921995317,11cyclictest11155-21chrt11:51:312
6921995313,16cyclictest23252-21ssh08:50:252
691999535,6cyclictest9-21ksoftirqd/010:25:270
691999535,6cyclictest9-21ksoftirqd/010:25:270
6919995323,3cyclictest9-21ksoftirqd/009:35:160
6919995320,2cyclictest9-21ksoftirqd/007:18:560
134491530,21ptp4l24128-21iostat_ios07:45:181
134491530,13ptp4l0-21swapper/108:55:301
6921995210,10cyclictest19806-21/usr/sbin/munin07:35:222
691999526,8cyclictest9-21ksoftirqd/009:15:000
691999523,5cyclictest9-21ksoftirqd/010:00:260
6919995223,3cyclictest9-21ksoftirqd/012:11:120
6919995219,5cyclictest9-21ksoftirqd/007:55:290
6919995219,5cyclictest9-21ksoftirqd/007:55:290
134491520,2ptp4l0-21swapper/112:25:121
6921995115,10cyclictest23226-21taskset07:44:082
6921995111,7cyclictest16938-21ssh09:45:272
691999515,5cyclictest9-21ksoftirqd/007:30:270
691999514,8cyclictest9-21ksoftirqd/011:10:280
691999513,9cyclictest9-21ksoftirqd/007:35:130
6919995120,2cyclictest9-21ksoftirqd/007:10:330
691999510,6cyclictest20616-21sh09:55:140
691999510,5cyclictest9-21ksoftirqd/009:50:250
231802510,6sleep10-21swapper/108:50:251
134491510,9ptp4l5697-21ntp_states07:05:191
134491510,4ptp4l0-21swapper/008:08:550
134491510,2ptp4l0-21swapper/109:22:541
692199508,8cyclictest11130-21ls08:25:212
692199500,15cyclictest25209-21latency_hist11:15:002
691999506,6cyclictest9-21ksoftirqd/009:40:140
691999504,6cyclictest121rcu_preempt08:35:430
691999504,5cyclictest9-21ksoftirqd/008:15:260
691999503,6cyclictest9-21ksoftirqd/007:40:190
6919995026,7cyclictest9-21ksoftirqd/008:45:280
6919995020,3cyclictest9-21ksoftirqd/011:25:330
134491500,3ptp4l0-21swapper/107:26:091
134491500,13ptp4l0-21swapper/111:48:591
692199498,11cyclictest29358-21sed12:30:282
6921994913,8cyclictest134491ptp4l09:10:142
691999493,10cyclictest9-21ksoftirqd/010:10:270
6919994929,2cyclictest9-21ksoftirqd/009:16:530
6919994922,2cyclictest9-21ksoftirqd/012:01:010
691999490,9cyclictest9-21ksoftirqd/008:50:120
134491490,5ptp4l0-21swapper/309:15:293
134491490,4ptp4l0-21swapper/011:36:080
134491490,4ptp4l0-21swapper/011:36:080
134491490,4ptp4l0-21swapper/008:31:430
6921994815,11cyclictest32618-21runrttasks08:01:052
692099480,3cyclictest15891-21kworker/1:012:03:491
691999486,5cyclictest20276-21cron11:05:010
691999485,7cyclictest9-21ksoftirqd/010:40:180
691999484,7cyclictest9-21ksoftirqd/010:15:120
691999483,5cyclictest9-21ksoftirqd/012:30:150
691999482,6cyclictest0-21swapper/010:35:160
6921994717,12cyclictest10746-21taskset10:44:122
6921994713,10cyclictest31636-21chrt11:25:312
691999471,8cyclictest21775-21strings11:05:190
691999471,7cyclictest212-21systemd-journal09:10:000
691999471,7cyclictest212-21systemd-journal09:10:000
134491470,5ptp4l0-21swapper/207:09:022
6921994618,11cyclictest3688-21taskset10:28:072
6921994618,11cyclictest3688-21taskset10:28:072
691999463,8cyclictest9-21ksoftirqd/012:35:140
134491460,4ptp4l0-21swapper/107:38:571
691999456,6cyclictest9-21ksoftirqd/007:45:190
692199447,15cyclictest26709-21ps12:25:232
134491440,9ptp4l0-21swapper/210:37:252
134491440,5ptp4l0-21swapper/110:25:201
134491440,5ptp4l0-21swapper/110:25:201
134491440,4ptp4l29160-21apt-get09:05:123
134491440,4ptp4l29160-21apt-get09:05:123
134491430,9ptp4l0-21swapper/309:33:183
134491430,9ptp4l0-21swapper/212:18:132
134491430,4ptp4l18965-21memory09:50:191
6921994214,26cyclictest20226-21runrttasks11:04:272
134491420,5ptp4l0-21swapper/311:05:103
134491420,5ptp4l0-21swapper/309:50:253
134491420,5ptp4l0-21swapper/308:55:133
134491420,5ptp4l0-21swapper/307:45:273
134491420,5ptp4l0-21swapper/109:35:151
134491420,4ptp4l6374-21ls08:15:211
134491420,4ptp4l3865-21users11:35:273
134491420,4ptp4l3865-21users11:35:273
134491420,4ptp4l337-21iostat11:30:171
134491420,4ptp4l28334-21ntp_states10:10:231
134491420,4ptp4l19545-21memory12:10:231
134491420,4ptp4l17861-21irqstats08:40:201
134491420,4ptp4l15938-21hddtemp_smartct09:45:161
134491420,4ptp4l15009-21diskstats08:35:151
134491420,4ptp4l12407-21apt-get08:30:121
134491420,3ptp4l0-21swapper/108:22:201
134491420,19ptp4l25-21ksoftirqd/112:21:041
6921994115,10cyclictest31819-21taskset12:35:592
6920994111,29cyclictest0-21swapper/109:10:401
134491410,6ptp4l0-21swapper/308:15:293
134491410,5ptp4l0-21swapper/307:50:253
134491410,5ptp4l0-21swapper/108:10:161
134491410,4ptp4l23606-21iostat_ios11:10:181
134491410,4ptp4l20618-21diskstats09:55:141
134491410,4ptp4l0-21swapper/310:50:143
134491410,4ptp4l0-21swapper/309:58:423
134491410,3ptp4l743-21apt-get08:05:131
134491400,5ptp4l28919-21iostat07:55:191
134491400,5ptp4l28919-21iostat07:55:191
134491400,5ptp4l0-21swapper/312:35:153
134491400,5ptp4l0-21swapper/308:45:033
134491400,5ptp4l0-21swapper/110:40:141
134491400,5ptp4l0-21swapper/110:15:131
134491400,4ptp4l25873-21meminfo10:05:201
134491400,4ptp4l17336-21/usr/sbin/munin07:30:181
134491400,4ptp4l0-21swapper/310:10:163
134491400,4ptp4l0-21swapper/307:40:203
134491400,4ptp4l0-21swapper/210:05:012
134491400,4ptp4l0-21swapper/209:50:492
134491400,4ptp4l0-21swapper/208:18:492
134491400,4ptp4l0-21swapper/208:11:192
134491400,4ptp4l0-21swapper/111:37:021
134491400,4ptp4l0-21swapper/111:37:021
134491400,4ptp4l0-21swapper/111:25:221
134491400,4ptp4l0-21swapper/110:34:431
134491400,4ptp4l0-21swapper/109:40:231
134491400,4ptp4l0-21swapper/108:00:211
134491400,4ptp4l0-21swapper/107:42:451
134491400,3ptp4l9686-21df_inode11:50:141
134491400,3ptp4l831-21ls10:20:261
134491400,3ptp4l29320-21users11:20:281
134491400,3ptp4l11612-21ls08:25:271
134491400,3ptp4l0-21swapper/110:55:281
134491390,5ptp4l21259-21fschecks_time12:15:151
134491390,5ptp4l0-21swapper/307:09:163
134491390,5ptp4l0-21swapper/107:15:151
134491390,4ptp4l0-21swapper/312:23:133
134491390,4ptp4l0-21swapper/312:07:333
134491390,4ptp4l0-21swapper/311:45:013
134491390,4ptp4l0-21swapper/309:25:283
134491390,4ptp4l0-21swapper/309:25:013
134491390,4ptp4l0-21swapper/308:34:433
134491390,4ptp4l0-21swapper/307:59:443
134491390,4ptp4l0-21swapper/307:59:443
134491390,4ptp4l0-21swapper/307:23:013
134491390,4ptp4l0-21swapper/307:16:033
134491390,4ptp4l0-21swapper/307:10:293
134491390,4ptp4l0-21swapper/207:13:582
134491390,4ptp4l0-21swapper/112:39:001
134491390,4ptp4l0-21swapper/112:30:151
134491390,4ptp4l0-21swapper/112:05:151
134491390,4ptp4l0-21swapper/111:55:241
134491390,4ptp4l0-21swapper/111:15:221
134491390,4ptp4l0-21swapper/111:05:111
134491390,4ptp4l0-21swapper/110:50:151
134491390,4ptp4l0-21swapper/110:45:131
134491390,4ptp4l0-21swapper/110:00:531
134491390,4ptp4l0-21swapper/109:05:461
134491390,4ptp4l0-21swapper/109:05:461
134491390,4ptp4l0-21swapper/107:10:211
134491380,5ptp4l0-21swapper/312:16:433
134491380,5ptp4l0-21swapper/308:12:473
134491380,4ptp4l0-21swapper/312:31:453
134491380,4ptp4l0-21swapper/312:29:133
134491380,4ptp4l0-21swapper/311:57:583
134491380,4ptp4l0-21swapper/311:31:243
134491380,4ptp4l0-21swapper/311:29:323
134491380,4ptp4l0-21swapper/311:11:513
134491380,4ptp4l0-21swapper/310:41:413
134491380,4ptp4l0-21swapper/310:25:193
134491380,4ptp4l0-21swapper/310:25:193
134491380,4ptp4l0-21swapper/310:20:493
134491380,4ptp4l0-21swapper/310:17:163
134491380,4ptp4l0-21swapper/310:05:123
134491380,4ptp4l0-21swapper/309:40:383
134491380,4ptp4l0-21swapper/309:12:353
134491380,4ptp4l0-21swapper/309:03:343
134491380,4ptp4l0-21swapper/309:03:343
134491380,4ptp4l0-21swapper/308:29:133
134491380,4ptp4l0-21swapper/308:05:013
134491380,4ptp4l0-21swapper/307:35:273
134491380,4ptp4l0-21swapper/111:02:231
134491380,4ptp4l0-21swapper/109:26:471
134491380,4ptp4l0-21swapper/107:20:191
134491380,3ptp4l0-21swapper/307:25:053
134491380,3ptp4l0-21swapper/110:35:211
134491380,3ptp4l0-21swapper/107:50:031
134491370,4ptp4l0-21swapper/312:13:333
134491370,4ptp4l0-21swapper/312:04:203
134491370,4ptp4l0-21swapper/311:23:023
134491370,4ptp4l0-21swapper/309:37:533
134491370,4ptp4l0-21swapper/308:40:373
134491370,4ptp4l0-21swapper/308:21:163
134491370,4ptp4l0-21swapper/308:04:133
134491370,3ptp4l0-21swapper/310:34:583
134491360,3ptp4l0-21swapper/310:55:223
134491360,3ptp4l0-21swapper/310:38:093
134491360,3ptp4l0-21swapper/310:03:053
134491360,3ptp4l0-21swapper/308:52:363
134491350,3ptp4l0-21swapper/311:53:193
134491350,3ptp4l0-21swapper/311:49:443
134491350,3ptp4l0-21swapper/311:02:343
134491350,3ptp4l0-21swapper/307:30:373
6922993327,4cyclictest41-21ksoftirqd/311:18:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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