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2026-09-06 - 05:38
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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 Sun Sep 06, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2540621390,5sleep20-21swapper/222:00:272
2540621390,5sleep20-21swapper/222:00:272
1869121360,5sleep3912699cyclictest21:45:273
9125998418,63cyclictest32021-21users19:55:282
9125998418,63cyclictest32021-21users19:55:282
9125997815,61cyclictest0-21swapper/219:25:282
912599711,68cyclictest0-21swapper/220:10:282
38342710,5sleep03835-21ps20:05:230
317972700,3sleep20-21swapper/222:15:192
912499690,66cyclictest31476-21/usr/sbin/munin21:05:241
320322690,4sleep10-21swapper/100:35:191
109282670,1sleep010930-21phc2sys20:20:240
912499651,60cyclictest31989-21ntp_states22:15:241
134491650,3ptp4l4646-21ls22:25:260
912499641,60cyclictest12631-21iostat_ios20:25:201
912499640,60cyclictest29699-21ntp_states22:10:261
912499630,26cyclictest2842-21chrt22:24:211
912499620,59cyclictest8277-21irqstats20:15:191
912499620,59cyclictest28263-21df19:50:151
912499612,57cyclictest7170-21kworker/1:222:55:291
912499590,27cyclictest1317-21runrttasks20:54:461
134491590,4ptp4l0-21swapper/220:45:562
912499581,23cyclictest19054-21chrt21:49:551
134491580,5ptp4l0-21swapper/322:45:163
134491580,4ptp4l0-21swapper/000:30:210
134491580,3ptp4l0-21swapper/221:40:112
134491570,4ptp4l0-21swapper/021:25:180
134491570,3ptp4l0-21swapper/323:25:263
134491570,3ptp4l0-21swapper/300:34:103
134491570,3ptp4l0-21swapper/121:15:241
912599562,52cyclictest0-21swapper/221:32:492
912599562,52cyclictest0-21swapper/221:32:492
912499562,51cyclictest0-21swapper/120:10:131
912499560,27cyclictest25895-21chrt23:11:281
912499550,24cyclictest14221-21seq22:47:431
134491550,4ptp4l0-21swapper/022:11:370
134491550,3ptp4l0-21swapper/320:55:183
134491550,3ptp4l0-21swapper/223:45:352
134491550,3ptp4l0-21swapper/223:10:242
134491550,3ptp4l0-21swapper/220:06:512
134491550,12ptp4l7740-21meminfo19:05:201
134491550,12ptp4l7102-21diskstats19:05:160
912499548,21cyclictest16148-21taskset20:31:581
134491540,4ptp4l0-21swapper/021:35:400
134491540,4ptp4l0-21swapper/019:41:050
134491540,3ptp4l0-21swapper/321:05:293
134491540,3ptp4l0-21swapper/023:31:380
134491540,20ptp4l9-21ksoftirqd/021:05:000
134491540,10ptp4l6793-21apt-get19:05:123
912599531,50cyclictest0-21swapper/221:04:482
912499532,21cyclictest0-21swapper/123:05:301
9124995312,39cyclictest22416-21kworker/1:019:35:091
134491530,5ptp4l0-21swapper/021:30:180
134491530,5ptp4l0-21swapper/021:30:180
134491530,4ptp4l0-21swapper/320:41:253
134491530,4ptp4l0-21swapper/121:43:541
134491530,4ptp4l0-21swapper/021:22:380
134491530,3ptp4l0-21swapper/319:30:423
134491530,3ptp4l0-21swapper/121:35:201
134491530,3ptp4l0-21swapper/019:35:150
912499520,22cyclictest26551-21seq00:22:591
134491520,4ptp4l0-21swapper/020:46:400
134491520,3ptp4l0-21swapper/023:13:220
134491520,3ptp4l0-21swapper/023:05:280
134491520,3ptp4l0-21swapper/022:35:490
912499515,44cyclictest30414-21kworker/1:100:31:091
912499510,25cyclictest7328-21seq22:32:581
912499510,25cyclictest7328-21seq22:32:581
134491510,4ptp4l0-21swapper/319:12:373
134491510,4ptp4l0-21swapper/022:21:160
134491510,4ptp4l0-21swapper/020:00:460
134491510,3ptp4l0-21swapper/322:06:133
134491510,3ptp4l0-21swapper/020:40:130
912499501,24cyclictest16637-21taskset22:54:121
9124995011,37cyclictest30414-21kworker/1:123:39:491
912499500,26cyclictest30782-21taskset23:24:511
134691500,16getstats0-21swapper/220:43:552
134491500,4ptp4l0-21swapper/323:45:583
134491500,4ptp4l0-21swapper/323:08:143
134491500,4ptp4l0-21swapper/322:11:173
134491500,4ptp4l0-21swapper/019:17:500
134491500,10ptp4l0-21swapper/322:00:543
134491500,10ptp4l0-21swapper/322:00:543
912499492,19cyclictest0-21swapper/121:22:471
912499490,24cyclictest12133-21runrttasks23:50:451
912499490,21cyclictest21433-21runrttasks23:03:481
912499490,21cyclictest21433-21runrttasks23:03:481
134491490,4ptp4l0-21swapper/320:21:023
134491490,4ptp4l0-21swapper/320:07:063
134491490,4ptp4l0-21swapper/320:04:363
134491490,4ptp4l0-21swapper/019:58:230
134491490,4ptp4l0-21swapper/019:58:230
134491490,3ptp4l0-21swapper/021:14:540
912499480,23cyclictest4834-21taskset22:25:311
134491480,3ptp4l0-21swapper/023:24:040
134491480,13ptp4l0-21swapper/322:30:343
134491480,13ptp4l0-21swapper/322:30:343
912499470,46cyclictest22416-21kworker/1:019:26:091
912499470,16cyclictest134491ptp4l22:05:261
134491470,5ptp4l0-21swapper/219:45:032
134491470,4ptp4l0-21swapper/320:10:493
134491470,4ptp4l0-21swapper/023:00:060
134491470,4ptp4l0-21swapper/023:00:060
134491470,4ptp4l0-21swapper/020:18:310
134491470,3ptp4l0-21swapper/023:52:310
134491470,3ptp4l0-21swapper/022:50:290
134491470,12ptp4l0-21swapper/120:45:261
134491470,11ptp4l0-21swapper/023:45:140
912599461,44cyclictest0-21swapper/200:30:292
134491460,3ptp4l0-21swapper/220:30:172
134491460,11ptp4l0-21swapper/023:17:120
9125994515,29cyclictest0-21swapper/223:20:392
134491450,4ptp4l0-21swapper/219:24:072
134491450,3ptp4l0-21swapper/219:11:202
134491450,3ptp4l0-21swapper/019:45:490
134491450,1ptp4l0-21swapper/000:13:240
9125994414,28cyclictest0-21swapper/222:40:402
912499441,40cyclictest24935-21memory22:00:221
912499441,40cyclictest24935-21memory22:00:221
912499440,16cyclictest134491ptp4l21:25:261
134491440,9ptp4l0-21swapper/221:14:482
134491440,5ptp4l0-21swapper/219:05:122
134491440,4ptp4l20059-21apt-get00:10:132
134491440,4ptp4l0-21swapper/320:19:533
134491440,4ptp4l0-21swapper/121:10:271
134491440,3ptp4l0-21swapper/300:23:503
134491440,3ptp4l0-21swapper/220:00:012
912499430,22cyclictest27796-21runrttasks20:58:041
134691430,4getstats0-21swapper/022:43:330
134491430,9ptp4l0-21swapper/222:12:182
134491430,5ptp4l0-21swapper/123:40:111
134491430,4ptp4l23192-21apt-get19:40:112
134491430,4ptp4l0-21swapper/319:53:243
134491430,4ptp4l0-21swapper/220:25:242
134491430,3ptp4l0-21swapper/023:42:050
134491430,3ptp4l0-21swapper/020:52:110
9125994216,23cyclictest1301-21snmpd20:53:582
912499422,38cyclictest0-21swapper/121:30:271
912499422,38cyclictest0-21swapper/121:30:271
912499420,23cyclictest9576-21seq22:37:201
134491420,9ptp4l0-21swapper/321:02:163
134491420,9ptp4l0-21swapper/220:56:082
134491420,6ptp4l0-21swapper/220:20:442
134491420,5ptp4l0-21swapper/100:25:291
134491420,4ptp4l26860-21hddtemp_smartct23:15:183
134491420,4ptp4l19532-21df21:50:171
134491420,4ptp4l0-21swapper/319:15:123
134491420,3ptp4l12689-21/usr/sbin/munin22:45:180
134491420,3ptp4l0-21swapper/122:44:581
912499411,38cyclictest0-21swapper/123:25:481
912499410,23cyclictest27483-21taskset19:46:011
134491410,9ptp4l0-21swapper/200:19:572
134491410,5ptp4l0-21swapper/321:10:233
134491410,5ptp4l0-21swapper/222:25:222
134491410,5ptp4l0-21swapper/123:55:271
134491410,5ptp4l0-21swapper/121:00:171
134491410,5ptp4l0-21swapper/120:35:271
134491410,5ptp4l0-21swapper/019:30:140
134491410,4ptp4l9721-21iostat19:10:181
134491410,4ptp4l6396-21meminfo22:30:230
134491410,4ptp4l6396-21meminfo22:30:230
134491410,4ptp4l17551-21apt-get00:05:133
134491410,4ptp4l15088-21iostat_ios21:40:193
134491410,4ptp4l0-21swapper/319:55:143
134491410,4ptp4l0-21swapper/319:55:143
134491410,4ptp4l0-21swapper/223:15:272
134491410,4ptp4l0-21swapper/222:08:222
134491410,4ptp4l0-21swapper/022:15:410
134491410,3ptp4l9122-21cyclictest19:40:133
134491410,3ptp4l28360-21df_inode19:50:150
134491410,3ptp4l18075-21ntp_states22:55:230
134491410,3ptp4l17325-21df_inode21:45:150
134491410,3ptp4l0-21swapper/220:15:212
912699402,3cyclictest121rcu_preempt20:54:413
134491400,6ptp4l24514-21cut23:10:173
134491400,5ptp4l912699cyclictest22:35:283
134491400,5ptp4l28508-21timerwakeupswit00:25:282
134491400,5ptp4l0-21swapper/023:25:280
134491400,5ptp4l0-21swapper/021:50:270
134491400,5ptp4l0-21swapper/000:22:070
134491400,4ptp4l26697-21df_abs23:15:161
134491400,4ptp4l21914-21df_inode21:55:151
134491400,4ptp4l14660-21diskstats20:30:153
134491400,4ptp4l0-21swapper/322:41:163
134491400,4ptp4l0-21swapper/223:40:232
134491400,4ptp4l0-21swapper/222:36:022
134491400,4ptp4l0-21swapper/221:07:572
134491400,4ptp4l0-21swapper/219:50:132
134491400,4ptp4l0-21swapper/219:37:572
134491400,4ptp4l0-21swapper/200:00:172
134491400,4ptp4l0-21swapper/023:58:340
134491400,4ptp4l0-21swapper/021:40:240
134491400,4ptp4l0-21swapper/021:05:220
134491400,4ptp4l0-21swapper/000:19:240
134491400,3ptp4l26712-21hddtemp_smartct22:05:150
134491400,3ptp4l22208-21memory20:45:203
134491400,3ptp4l16589-21diskstats19:25:150
134491400,2ptp4l12725-21apt-get23:55:123
912499392,35cyclictest0-21swapper/119:58:081
912499392,35cyclictest0-21swapper/119:58:081
134491390,5ptp4l0-21swapper/320:25:143
134491390,5ptp4l0-21swapper/000:25:190
134491390,4ptp4l5081-21chrt22:28:363
134491390,4ptp4l0-21swapper/323:02:483
134491390,4ptp4l0-21swapper/323:02:483
134491390,4ptp4l0-21swapper/322:24:503
134491390,4ptp4l0-21swapper/321:36:503
134491390,4ptp4l0-21swapper/321:33:043
134491390,4ptp4l0-21swapper/321:33:043
134491390,4ptp4l0-21swapper/319:37:073
134491390,4ptp4l0-21swapper/319:25:273
134491390,4ptp4l0-21swapper/319:21:543
134491390,4ptp4l0-21swapper/300:13:113
134491390,4ptp4l0-21swapper/223:53:102
134491390,4ptp4l0-21swapper/223:26:012
134491390,4ptp4l0-21swapper/223:02:472
134491390,4ptp4l0-21swapper/223:02:472
134491390,4ptp4l0-21swapper/222:57:502
134491390,4ptp4l0-21swapper/222:45:192
134491390,4ptp4l0-21swapper/221:56:202
134491390,4ptp4l0-21swapper/221:53:192
134491390,4ptp4l0-21swapper/221:27:262
134491390,4ptp4l0-21swapper/221:15:122
134491390,4ptp4l0-21swapper/120:40:201
134491390,4ptp4l0-21swapper/120:24:411
134491390,4ptp4l0-21swapper/119:15:191
134491390,4ptp4l0-21swapper/100:15:131
134491390,4ptp4l0-21swapper/023:35:060
134491390,4ptp4l0-21swapper/022:03:140
134491390,4ptp4l0-21swapper/022:03:140
134491390,4ptp4l0-21swapper/021:56:070
134491390,4ptp4l0-21swapper/020:55:270
134491390,4ptp4l0-21swapper/020:35:270
134491390,4ptp4l0-21swapper/020:31:390
134491390,4ptp4l0-21swapper/020:27:290
134491390,4ptp4l0-21swapper/020:13:070
134491390,4ptp4l0-21swapper/019:22:220
134491390,4ptp4l0-21swapper/019:10:260
134491390,4ptp4l0-21swapper/000:09:520
134491390,4ptp4l0-21swapper/000:03:050
134491390,3ptp4l28752-21apt-get23:20:143
134491390,3ptp4l16854-21df20:35:152
134491390,3ptp4l0-21swapper/219:30:112
134491390,3ptp4l0-21swapper/219:15:232
134491390,3ptp4l0-21swapper/119:40:241
134491380,4ptp4l16065-21irqrtprio00:00:211
134491380,4ptp4l14793-21sed19:20:201
134491380,4ptp4l0-21swapper/323:50:153
134491380,4ptp4l0-21swapper/323:30:173
134491380,4ptp4l0-21swapper/322:56:143
134491380,4ptp4l0-21swapper/322:19:353
134491380,4ptp4l0-21swapper/321:50:343
134491380,4ptp4l0-21swapper/321:25:103
134491380,4ptp4l0-21swapper/321:20:073
134491380,4ptp4l0-21swapper/320:37:343
134491380,4ptp4l0-21swapper/319:45:053
134491380,4ptp4l0-21swapper/300:25:233
134491380,4ptp4l0-21swapper/300:16:493
134491380,4ptp4l0-21swapper/223:55:242
134491380,4ptp4l0-21swapper/223:30:242
134491380,4ptp4l0-21swapper/222:51:332
134491380,4ptp4l0-21swapper/222:31:282
134491380,4ptp4l0-21swapper/222:31:282
134491380,4ptp4l0-21swapper/222:22:502
134491380,4ptp4l0-21swapper/221:35:372
134491380,4ptp4l0-21swapper/221:22:242
134491380,4ptp4l0-21swapper/200:35:472
134491380,4ptp4l0-21swapper/123:32:051
134491380,4ptp4l0-21swapper/119:32:411
134491380,4ptp4l0-21swapper/100:13:231
134491380,4ptp4l0-21swapper/100:05:171
134491380,4ptp4l0-21swapper/021:19:400
134491380,4ptp4l0-21swapper/000:35:300
134491380,3ptp4l2760-21/usr/sbin/munin21:15:123
134491380,3ptp4l212-21systemd-journal21:55:183
134491380,3ptp4l0-21swapper/221:47:462
134491380,3ptp4l0-21swapper/123:48:521
912499374,31cyclictest20957-21kworker/1:120:00:091
134491370,4ptp4l0-21swapper/323:40:183
134491370,4ptp4l0-21swapper/200:20:122
134491370,4ptp4l0-21swapper/120:06:471
134491370,3ptp4l0-21swapper/322:51:463
134491370,3ptp4l0-21swapper/300:02:533
134491370,3ptp4l0-21swapper/223:36:572
134491370,3ptp4l0-21swapper/223:05:142
134491370,3ptp4l0-21swapper/200:06:122
134491360,4ptp4l0-21swapper/300:39:203
134491340,3ptp4l0-21swapper/323:38:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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