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2026-07-17 - 11:02
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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 Jul 17, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3077121650,3sleep2528599cyclictest22:20:272
5284998016,62cyclictest10206-21kworker/1:221:25:291
5283997437,7cyclictest9-21ksoftirqd/020:45:000
528699699,19cyclictest2213-21sed22:30:183
528499699,58cyclictest10206-21kworker/1:221:42:091
528699671,26cyclictest16350-21ls21:50:213
528699670,27cyclictest5631-21ls23:45:283
134491670,21ptp4l12242-21/usr/sbin/munin22:50:281
528699661,23cyclictest19459-21wc00:15:263
528699660,31cyclictest30212-21sed22:20:203
528699660,22cyclictest32243-21/usr/sbin/munin23:35:173
5283996532,6cyclictest9-21ksoftirqd/000:25:140
528699640,23cyclictest6307-21cpuspeed22:40:143
5283996432,6cyclictest9-21ksoftirqd/020:00:010
5283996431,6cyclictest9-21ksoftirqd/021:40:170
5283996428,5cyclictest9-21ksoftirqd/019:30:000
134491640,6ptp4l0-21swapper/319:07:203
528499636,55cyclictest25403-21kworker/1:023:06:091
5283996331,4cyclictest9-21ksoftirqd/019:15:000
5283996330,5cyclictest9-21ksoftirqd/019:50:140
134491630,3ptp4l32119-21missed_timers20:05:222
528499627,52cyclictest25403-21kworker/1:000:25:491
134491620,5ptp4l0-21swapper/019:05:250
528699610,24cyclictest12725-21seq21:44:143
5283996130,6cyclictest9-21ksoftirqd/023:05:140
5283996130,5cyclictest9-21ksoftirqd/021:35:160
5283996125,5cyclictest9-21ksoftirqd/000:00:010
5283996029,5cyclictest9-21ksoftirqd/023:20:120
5283996029,5cyclictest9-21ksoftirqd/023:10:270
5283996027,5cyclictest9-21ksoftirqd/021:15:260
134491600,17ptp4l0-21swapper/220:40:002
5283995928,5cyclictest9-21ksoftirqd/023:25:150
5283995922,5cyclictest9-21ksoftirqd/000:08:300
5283995921,5cyclictest9-21ksoftirqd/021:50:190
528699582,21cyclictest0-21swapper/322:11:073
528699580,27cyclictest28615-21taskset21:05:533
528699580,23cyclictest26062-21taskset19:52:313
5283995822,5cyclictest9-21ksoftirqd/021:45:280
528699571,27cyclictest26578-21taskset21:04:083
5283995731,6cyclictest9-21ksoftirqd/021:20:160
5283995731,5cyclictest9-21ksoftirqd/020:35:270
5283995724,6cyclictest9-21ksoftirqd/022:00:140
5283995721,10cyclictest9-21ksoftirqd/019:20:110
5283995717,3cyclictest9-21ksoftirqd/022:31:230
134491570,4ptp4l0-21swapper/223:15:292
134491570,4ptp4l0-21swapper/223:15:292
134491570,4ptp4l0-21swapper/220:59:572
134491570,4ptp4l0-21swapper/200:28:122
134491570,3ptp4l0-21swapper/123:03:211
134491570,3ptp4l0-21swapper/120:35:241
528699560,24cyclictest3522-21taskset23:40:383
5283995630,3cyclictest9-21ksoftirqd/000:38:370
134491560,4ptp4l0-21swapper/219:21:002
134491560,4ptp4l0-21swapper/122:45:441
134491560,3ptp4l0-21swapper/220:51:502
134491560,3ptp4l0-21swapper/200:12:322
528699550,25cyclictest7444-21ls23:50:223
528399554,4cyclictest9-21ksoftirqd/021:04:590
5283995526,5cyclictest9-21ksoftirqd/022:35:280
5283995522,4cyclictest9-21ksoftirqd/021:25:180
134491550,4ptp4l0-21swapper/219:30:392
134491550,3ptp4l0-21swapper/019:32:100
134491550,2ptp4l0-21swapper/123:50:171
5283995419,3cyclictest9-21ksoftirqd/000:11:160
5283995418,6cyclictest9-21ksoftirqd/020:17:370
134491540,4ptp4l0-21swapper/220:15:462
134491540,4ptp4l0-21swapper/220:11:512
134491540,4ptp4l0-21swapper/219:49:212
134491540,4ptp4l0-21swapper/200:19:072
134491540,4ptp4l0-21swapper/200:01:532
528699532,20cyclictest0-21swapper/321:10:013
528699530,12cyclictest134491ptp4l21:00:003
528399537,6cyclictest9-21ksoftirqd/022:50:280
528399535,5cyclictest9-21ksoftirqd/023:30:280
528399534,8cyclictest9-21ksoftirqd/021:35:000
5283995339,3cyclictest9-21ksoftirqd/023:40:160
5283995320,4cyclictest9-21ksoftirqd/019:37:570
134491530,4ptp4l0-21swapper/220:41:542
134491530,4ptp4l0-21swapper/220:04:032
134491530,3ptp4l0-21swapper/222:51:502
134491530,3ptp4l0-21swapper/221:46:102
134491530,12ptp4l0-21swapper/121:57:431
528399526,6cyclictest9-21ksoftirqd/019:50:010
528399525,4cyclictest9-21ksoftirqd/021:10:170
5283995226,6cyclictest9-21ksoftirqd/020:05:180
5283995220,5cyclictest9-21ksoftirqd/023:45:250
528399521,8cyclictest121rcu_preempt23:00:250
134491520,5ptp4l0-21swapper/121:51:171
134491520,4ptp4l0-21swapper/219:26:352
134491520,3ptp4l0-21swapper/221:11:442
528699512,22cyclictest0-21swapper/322:05:293
528599513,3cyclictest121rcu_preempt21:18:222
528399515,9cyclictest9-21ksoftirqd/022:25:000
528399514,8cyclictest121rcu_preempt20:13:120
528399514,3cyclictest121rcu_preempt22:10:130
528399513,5cyclictest9-21ksoftirqd/020:00:250
528399513,5cyclictest9-21ksoftirqd/019:40:150
5283995119,4cyclictest9-21ksoftirqd/020:23:420
5283995117,3cyclictest9-21ksoftirqd/023:54:080
134491510,4ptp4l0-21swapper/223:45:052
134491510,4ptp4l0-21swapper/222:09:382
134491510,4ptp4l0-21swapper/200:39:592
134491510,4ptp4l0-21swapper/119:14:131
134491510,3ptp4l0-21swapper/223:37:452
528699501,44cyclictest8591-21apt-get22:45:143
528699500,27cyclictest10805-21seq23:59:493
528499500,48cyclictest25403-21kworker/1:023:56:291
528399505,7cyclictest9-21ksoftirqd/023:00:000
528399502,8cyclictest121rcu_preempt22:43:390
528399502,5cyclictest9-21ksoftirqd/000:00:150
134491500,8ptp4l0-21swapper/122:01:291
134491500,4ptp4l0-21swapper/023:37:230
134491500,3ptp4l0-21swapper/222:37:192
134491500,3ptp4l0-21swapper/222:34:552
134491500,3ptp4l0-21swapper/222:25:242
134491500,3ptp4l0-21swapper/122:32:031
528699490,27cyclictest3354-21taskset21:22:563
528399493,3cyclictest27756-21uname21:05:200
528399490,6cyclictest1322-21turbostat22:30:000
134491490,5ptp4l0-21swapper/221:26:052
134491490,4ptp4l0-21swapper/223:54:082
134491490,3ptp4l0-21swapper/223:12:452
134491490,3ptp4l0-21swapper/223:02:312
528399486,9cyclictest9-21ksoftirqd/020:50:130
528399486,6cyclictest9-21ksoftirqd/021:55:190
528399485,4cyclictest382-21avahi-daemon22:15:270
528399485,3cyclictest9-21ksoftirqd/022:05:190
528399483,7cyclictest9-21ksoftirqd/019:15:280
528399483,6cyclictest9-21ksoftirqd/022:45:300
528399483,5cyclictest0-21swapper/020:30:190
528399482,2cyclictest121rcu_preempt23:15:170
528399482,2cyclictest121rcu_preempt23:15:170
528399481,7cyclictest121rcu_preempt20:27:430
5283994812,3cyclictest9-21ksoftirqd/000:21:490
134491480,5ptp4l0-21swapper/221:30:032
134491480,3ptp4l0-21swapper/222:55:472
528699472,22cyclictest0-21swapper/320:23:123
528699470,27cyclictest3053-21seq20:14:073
5285994735,9cyclictest33-21ksoftirqd/219:35:182
528599472,2cyclictest121rcu_preempt19:50:592
528599471,2cyclictest121rcu_preempt21:53:582
528399474,4cyclictest9-21ksoftirqd/000:35:000
528399472,5cyclictest9-21ksoftirqd/020:45:200
528399472,5cyclictest0-21swapper/020:55:160
528399470,8cyclictest134491ptp4l00:15:140
134491470,6ptp4l2947-21apt-get19:05:101
528699460,15cyclictest134491ptp4l00:20:173
528599461,2cyclictest121rcu_preempt20:48:582
528499462,43cyclictest0-21swapper/122:20:401
134491460,4ptp4l0-21swapper/219:09:372
134491460,4ptp4l0-21swapper/200:09:542
134491460,3ptp4l0-21swapper/221:20:032
528699452,22cyclictest0-21swapper/321:58:443
528699452,20cyclictest0-21swapper/321:17:223
528699450,25cyclictest17610-21seq23:03:093
528699450,22cyclictest29900-21awk20:00:233
134491450,3ptp4l0-21swapper/220:25:112
528699442,22cyclictest0-21swapper/300:01:363
528599449,3cyclictest33-21ksoftirqd/223:29:592
5285994433,9cyclictest33-21ksoftirqd/222:40:302
134491440,9ptp4l0-21swapper/221:04:012
134491440,5ptp4l0-21swapper/219:55:122
134491440,3ptp4l0-21swapper/120:15:101
134491430,9ptp4l0-21swapper/320:40:123
134491430,4ptp4l20307-21apt-get23:10:131
134491430,4ptp4l13182-21apt-get22:55:123
134491430,4ptp4l0-21swapper/223:58:272
5285994237,3cyclictest33-21ksoftirqd/223:05:192
528499423,38cyclictest0-21swapper/119:50:391
528499421,40cyclictest0-21swapper/122:26:591
134491420,8ptp4l0-21swapper/223:42:432
134491420,5ptp4l21917-21apt-get19:45:141
134491420,5ptp4l18183-21apt-get00:15:131
134491420,5ptp4l0-21swapper/319:25:103
134491420,5ptp4l0-21swapper/100:10:211
134491420,4ptp4l27054-21apt-get22:15:131
134491420,4ptp4l24920-21apt-get23:20:111
134491420,4ptp4l19923-21df_inode19:40:141
134491420,4ptp4l0-21swapper/322:25:213
134491420,4ptp4l0-21swapper/300:28:323
134491420,4ptp4l0-21swapper/120:44:021
134491420,3ptp4l3378-21apt-get20:15:143
134491420,13ptp4l0-21swapper/119:58:521
528699412,21cyclictest0-21swapper/321:29:433
528699410,39cyclictest20849-21awk20:50:223
528699410,26cyclictest14877-21taskset21:47:253
528699410,19cyclictest20840-21cat22:00:203
5285994137,3cyclictest33-21ksoftirqd/219:15:002
5285994135,3cyclictest33-21ksoftirqd/223:35:002
528499411,2cyclictest25-21ksoftirqd/122:41:291
134491410,8ptp4l0-21swapper/221:37:142
134491410,4ptp4l24901-21df_inode21:00:141
134491410,4ptp4l14129-21meminfo22:55:211
134491410,4ptp4l0-21swapper/220:31:572
134491410,3ptp4l19944-21apt-get22:00:122
134491410,2ptp4l121rcu_preempt22:38:401
134491410,10ptp4l0-21swapper/120:50:401
5286994033,4cyclictest41-21ksoftirqd/323:30:123
528699402,22cyclictest0-21swapper/319:57:413
528699402,21cyclictest0-21swapper/300:07:463
528699400,25cyclictest28868-21seq22:17:093
5285994035,3cyclictest33-21ksoftirqd/200:20:172
5285994034,3cyclictest33-21ksoftirqd/219:20:002
134491400,5ptp4l0-21swapper/322:50:233
134491400,4ptp4l32378-21iostat_ios23:35:181
134491400,4ptp4l23573-21ntp_states22:05:241
134491400,4ptp4l13471-21hddtemp_smartct21:45:181
134491400,4ptp4l0-21swapper/319:20:063
134491400,4ptp4l0-21swapper/223:22:332
134491400,4ptp4l0-21swapper/222:16:012
134491400,4ptp4l0-21swapper/222:10:392
134491400,4ptp4l0-21swapper/221:58:492
134491400,4ptp4l0-21swapper/120:12:361
134491400,3ptp4l27220-21apt-get23:25:131
528699392,21cyclictest0-21swapper/319:10:273
528599399,3cyclictest33-21ksoftirqd/219:40:222
5285993934,3cyclictest33-21ksoftirqd/220:25:002
134491390,6ptp4l23705-21ntp_kernel_pll_23:15:233
134491390,6ptp4l23705-21ntp_kernel_pll_23:15:233
134491390,5ptp4l0-21swapper/323:05:223
134491390,5ptp4l0-21swapper/320:29:583
134491390,5ptp4l0-21swapper/320:05:183
134491390,5ptp4l0-21swapper/319:35:143
134491390,5ptp4l0-21swapper/221:06:322
134491390,5ptp4l0-21swapper/123:15:141
134491390,5ptp4l0-21swapper/123:15:141
134491390,5ptp4l0-21swapper/121:05:181
134491390,5ptp4l0-21swapper/100:05:141
134491390,4ptp4l2974-21ls21:20:281
134491390,4ptp4l15742-21memory19:30:191
134491390,4ptp4l11521-21/usr/sbin/munin00:00:161
134491390,4ptp4l0-21swapper/323:25:163
134491390,4ptp4l0-21swapper/323:21:373
134491390,4ptp4l0-21swapper/320:45:023
134491390,4ptp4l0-21swapper/320:35:223
134491390,4ptp4l0-21swapper/320:30:233
134491390,4ptp4l0-21swapper/300:30:143
134491390,4ptp4l0-21swapper/300:14:563
134491390,4ptp4l0-21swapper/221:44:562
134491390,4ptp4l0-21swapper/123:34:151
134491390,4ptp4l0-21swapper/121:11:201
134491390,4ptp4l0-21swapper/120:30:191
134491390,4ptp4l0-21swapper/120:30:001
134491390,4ptp4l0-21swapper/120:20:141
134491390,4ptp4l0-21swapper/120:05:541
134491390,4ptp4l0-21swapper/119:25:121
134491390,4ptp4l0-21swapper/119:15:151
134491390,3ptp4l22377-21diskstats20:55:151
134491390,3ptp4l18199-21ntp_states19:35:211
134491390,3ptp4l0-21swapper/200:30:032
134491390,2ptp4l29395-21iostat_ios20:00:181
134491390,2ptp4l0-21swapper/122:14:251
528599384,8cyclictest33-21ksoftirqd/222:45:152
134491380,7ptp4l25-21ksoftirqd/121:15:401
134491380,4ptp4l0-21swapper/323:11:413
134491380,4ptp4l0-21swapper/322:37:173
134491380,4ptp4l0-21swapper/321:35:253
134491380,4ptp4l0-21swapper/321:30:403
134491380,4ptp4l0-21swapper/319:47:543
134491380,4ptp4l0-21swapper/319:42:203
134491380,4ptp4l0-21swapper/319:16:523
134491380,4ptp4l0-21swapper/300:35:083
134491380,4ptp4l0-21swapper/123:45:131
134491380,4ptp4l0-21swapper/121:35:291
134491380,4ptp4l0-21swapper/121:30:161
134491380,4ptp4l0-21swapper/119:21:281
134491380,4ptp4l0-21swapper/100:35:531
134491380,4ptp4l0-21swapper/100:30:131
134491380,4ptp4l0-21swapper/100:20:411
134491380,3ptp4l0-21swapper/123:43:301
528699371,31cyclictest2318-21gnome-shell19:30:583
134491370,3ptp4l0-21swapper/120:45:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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