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2026-08-08 - 11:52
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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 all highest latencies:
System rackcslot2.osadl.org (updated Sat Aug 08, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
343921970,2sleep00-21swapper/019:03:260
439126956,8sleep10-21swapper/119:04:171
71992640,1sleep0121rcuc/023:01:140
4951993332,0cyclictest0-21swapper/100:29:281
4950993333,0cyclictest0-21swapper/020:00:450
4950993310,12cyclictest0-21swapper/000:23:470
4950993232,0cyclictest0-21swapper/000:13:200
4950993110,4cyclictest0-21swapper/021:12:400
4951993016,7cyclictest16895-21apache200:05:471
4951992910,1cyclictest0-21swapper/122:21:431
4950992921,5cyclictest16887-21apache219:48:290
4950992810,11cyclictest0-21swapper/022:22:070
4951992621,4cyclictest16887-21apache222:43:541
4950992610,2cyclictest0-21swapper/022:53:160
495099260,0cyclictest0-21swapper/000:06:300
4951992510,10cyclictest0-21swapper/122:36:321
495199250,24cyclictest6254-21grep23:43:281
4950992524,0cyclictest26993-21ssh22:43:320
4950992423,1cyclictest16895-21apache222:34:390
4950992410,7cyclictest0-21swapper/021:23:240
4951992322,1cyclictest16895-21apache200:22:281
495199230,20cyclictest30488-21df21:23:251
495099238,11cyclictest0-21swapper/021:51:440
495099236,11cyclictest0-21swapper/023:33:330
495099234,12cyclictest0-21swapper/020:33:300
4950992321,2cyclictest0-21swapper/020:52:530
4950992318,4cyclictest16895-21apache223:05:130
4950992311,6cyclictest0-21swapper/019:58:130
4950992310,8cyclictest0-21swapper/023:42:260
4950992310,7cyclictest0-21swapper/023:21:440
4950992310,6cyclictest0-21swapper/023:28:240
4950992310,4cyclictest0-21swapper/021:53:180
495199225,10cyclictest0-21swapper/122:58:241
495199223,10cyclictest0-21swapper/123:28:241
495199222,2cyclictest4285-21ssh23:40:131
4951992220,1cyclictest24259-21sendmail-msp21:58:131
4951992211,5cyclictest17808-21kworker/u4:223:23:121
4951992211,2cyclictest0-21swapper/122:57:471
4951992210,5cyclictest0-21swapper/121:33:261
4951992210,1cyclictest0-21swapper/121:16:191
495199220,1cyclictest0-21swapper/121:58:251
495099227,6cyclictest5490-21/usr/sbin/munin21:33:250
4950992212,7cyclictest16895-21apache223:16:440
4950992210,6cyclictest0-21swapper/023:53:240
4950992210,6cyclictest0-21swapper/000:32:320
4950992210,3cyclictest0-21swapper/022:01:140
495099220,22cyclictest0-21swapper/019:10:340
4951992119,1cyclictest802-21apache220:57:531
4951992114,4cyclictest100350irq/108-eth1-tx23:49:441
4951992111,3cyclictest0-21swapper/120:23:331
4951992110,7cyclictest0-21swapper/123:08:241
4951992110,6cyclictest0-21swapper/123:58:151
4951992110,6cyclictest0-21swapper/119:43:541
4951992110,5cyclictest0-21swapper/123:54:471
4951992110,5cyclictest0-21swapper/120:03:341
4951992110,4cyclictest0-21swapper/121:38:281
4951992110,1cyclictest0-21swapper/123:14:061
495199210,8cyclictest30081-21perf21:23:121
4950992120,1cyclictest16895-21apache221:14:400
4950992119,0cyclictest0-21swapper/000:12:360
4950992116,3cyclictest16887-21apache219:28:300
495099210,2cyclictest0-21swapper/022:03:300
468422110,0sleep10-21swapper/100:25:461
495199205,6cyclictest0-21swapper/122:48:281
495199202,11cyclictest0-21swapper/122:28:261
4951992019,1cyclictest0-21swapper/120:59:561
4951992018,1cyclictest4676-21uptime22:13:341
4951992015,2cyclictest16887-21apache223:34:121
4951992010,6cyclictest0-21swapper/122:42:161
4951992010,4cyclictest0-21swapper/100:17:141
495099203,12cyclictest0-21swapper/020:18:330
4950992018,1cyclictest0-21swapper/022:17:490
4950992010,4cyclictest0-21swapper/000:33:590
4950992010,3cyclictest0-21swapper/021:22:120
495099200,12cyclictest10419-21python21:38:310
495199199,4cyclictest231ktimersoftd/120:53:121
495199198,6cyclictest0-21swapper/119:18:301
495199195,12cyclictest0-21swapper/121:03:281
495199193,12cyclictest0-21swapper/121:48:301
4951991914,4cyclictest100150irq/106-eth1-rx23:03:181
4951991912,3cyclictest16887-21apache219:17:471
495199191,12cyclictest0-21swapper/120:28:251
4951991910,5cyclictest0-21swapper/123:27:151
4951991910,5cyclictest0-21swapper/120:38:251
4951991910,5cyclictest0-21swapper/119:23:261
4951991910,4cyclictest0-21swapper/122:04:501
4951991910,3cyclictest0-21swapper/122:23:181
4951991910,2cyclictest0-21swapper/120:17:171
495099199,6cyclictest16895-21apache223:43:190
4950991919,0cyclictest0-21swapper/021:05:340
4950991919,0cyclictest0-21swapper/020:46:510
4950991917,1cyclictest0-21swapper/020:53:340
4950991910,6cyclictest0-21swapper/022:52:120
4950991910,6cyclictest0-21swapper/022:11:060
4950991910,6cyclictest0-21swapper/021:45:070
4950991910,6cyclictest0-21swapper/019:36:000
4950991910,4cyclictest0-21swapper/022:28:480
4950991910,4cyclictest0-21swapper/020:03:250
4950991910,0cyclictest0-21swapper/021:29:140
495099190,3cyclictest26447-21kworker/u4:022:38:280
495199186,8cyclictest0-21swapper/100:08:251
495199183,10cyclictest0-21swapper/121:08:301
495199182,9cyclictest0-21swapper/119:58:241
4951991816,1cyclictest3067-21ssh21:28:491
4951991814,3cyclictest12885-21fschecks_count19:28:251
4951991810,5cyclictest0-21swapper/119:33:251
4951991810,2cyclictest0-21swapper/119:53:261
4951991810,2cyclictest0-21swapper/100:33:311
495099184,6cyclictest0-21swapper/020:23:300
4950991811,6cyclictest100150irq/106-eth1-rx23:58:150
4950991811,2cyclictest0-21swapper/019:13:330
4950991810,5cyclictest0-21swapper/023:48:300
4950991810,4cyclictest0-21swapper/000:18:240
4950991810,2cyclictest0-21swapper/022:27:560
4950991810,2cyclictest0-21swapper/019:38:230
495099180,1cyclictest0-21swapper/023:09:040
495199177,6cyclictest13944-21ssh21:43:321
495199174,4cyclictest0-21swapper/119:48:331
495199170,8cyclictest17353-21/usr/sbin/munin19:38:281
495099174,8cyclictest0-21swapper/020:38:290
495099173,5cyclictest18582-21diskmemload23:23:260
4950991710,4cyclictest0-21swapper/019:43:270
4950991710,1cyclictest0-21swapper/020:12:430
495199164,7cyclictest0-21swapper/120:43:241
4951991611,3cyclictest632-21ls20:18:331
4951991610,3cyclictest0-21swapper/120:08:241
4951991610,2cyclictest0-21swapper/122:08:181
4951991610,1cyclictest0-21swapper/120:36:151
495099164,9cyclictest0-21swapper/020:28:240
4950991614,1cyclictest103542sleep019:20:580
4951991510,2cyclictest0-21swapper/119:08:311
4950991510,3cyclictest0-21swapper/021:00:550
4950991410,2cyclictest0-21swapper/019:23:280
4950991310,2cyclictest0-21swapper/020:13:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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