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2026-07-06 - 00:58
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Sun Jul 05, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27862690,1sleep00-21swapper/012:23:430
2728526957,8sleep10-21swapper/107:04:141
297472670,1sleep10-21swapper/108:33:511
2736526553,8sleep00-21swapper/007:05:030
155112600,1sleep00-21swapper/011:18:060
27932993410,23cyclictest0-21swapper/112:07:131
27931993410,23cyclictest0-21swapper/010:57:280
27931993213,18cyclictest0-21swapper/008:24:040
27932993110,0cyclictest0-21swapper/111:32:121
27931993110,1cyclictest0-21swapper/011:32:320
27932992828,0cyclictest0-21swapper/110:31:511
27932992827,1cyclictest0-21swapper/108:02:451
2793299280,14cyclictest0-21swapper/111:43:421
27932992722,4cyclictest5386-21apache210:55:571
27931992713,13cyclictest5359-21apache212:34:160
27931992710,17cyclictest0-21swapper/010:47:380
27932992622,0cyclictest0-21swapper/111:05:251
27931992625,0cyclictest0-21swapper/010:02:270
27931992619,4cyclictest5359-21apache211:21:560
27932992523,1cyclictest770-21irqbalance12:00:501
27932992521,2cyclictest705-21ntpd09:26:291
27931992522,2cyclictest6536-21ssh12:28:370
2793299244,12cyclictest0-21swapper/111:09:321
27932992421,2cyclictest705-21ntpd10:24:041
27932992410,3cyclictest0-21swapper/107:46:551
27932992410,1cyclictest0-21swapper/111:52:381
2793199243,20cyclictest26569-21/usr/sbin/munin08:28:480
2793199240,0cyclictest0-21swapper/012:00:080
27932992323,0cyclictest0-21swapper/109:42:311
27932992321,1cyclictest705-21ntpd07:32:281
27932992310,7cyclictest0-21swapper/110:34:581
2793299230,7cyclictest0-21swapper/108:28:511
27931992321,1cyclictest0-21swapper/011:42:030
27931992318,4cyclictest5386-21apache210:05:550
27931992318,4cyclictest5359-21apache209:19:150
27931992310,4cyclictest0-21swapper/010:18:450
2793299225,12cyclictest0-21swapper/108:58:421
2793299222,15cyclictest0-21swapper/109:54:561
27932992221,1cyclictest0-21swapper/110:23:041
27932992221,1cyclictest0-21swapper/108:28:091
27932992211,7cyclictest5386-21apache209:17:281
27932992210,9cyclictest0-21swapper/110:48:591
27932992210,9cyclictest0-21swapper/110:42:241
27932992210,8cyclictest0-21swapper/111:55:321
2793299220,14cyclictest0-21swapper/108:08:451
2793199226,6cyclictest0-21swapper/007:08:410
2793199223,15cyclictest0-21swapper/009:43:400
27931992222,0cyclictest0-21swapper/010:09:560
27931992222,0cyclictest0-21swapper/009:52:500
27931992218,4cyclictest802-21apache208:57:580
27931992213,6cyclictest5359-21apache209:30:190
27931992210,9cyclictest19885-21kworker/u4:012:19:370
27931992210,4cyclictest0-21swapper/011:04:060
27931992210,4cyclictest0-21swapper/010:13:440
27931992210,3cyclictest0-21swapper/007:38:420
27931992210,10cyclictest0-21swapper/009:26:350
2793199220,4cyclictest13584-21rm09:13:110
2793199220,1cyclictest0-21swapper/011:02:560
2793299216,8cyclictest9697-21apache_volume09:08:421
27932992111,5cyclictest100350irq/108-eth1-tx09:59:091
27932992110,4cyclictest0-21swapper/111:00:371
27932992110,3cyclictest0-21swapper/108:48:441
2793299210,3cyclictest0-21swapper/112:20:591
2793299210,18cyclictest0-21swapper/112:23:461
2793299210,13cyclictest0-21swapper/107:23:431
2793199214,8cyclictest6134-21gzip10:23:490
27931992110,5cyclictest0-21swapper/011:23:500
27931992110,5cyclictest0-21swapper/011:09:070
27931992110,3cyclictest0-21swapper/010:29:240
1859022110,0sleep00-21swapper/008:07:010
288652200,1sleep10-21swapper/110:12:331
27932992017,2cyclictest644-21nscd12:34:291
27932992010,4cyclictest0-21swapper/107:13:401
27932992010,3cyclictest0-21swapper/108:18:461
2793199205,9cyclictest0-21swapper/008:08:410
27931992020,0cyclictest0-21swapper/011:34:060
27931992012,5cyclictest5359-21apache211:55:530
27931992010,7cyclictest0-21swapper/012:08:490
27931992010,4cyclictest0-21swapper/011:43:410
27931992010,4cyclictest0-21swapper/008:33:440
2793199200,3cyclictest0-21swapper/009:40:250
1422422010,0sleep00-21swapper/009:13:430
2793299197,10cyclictest0-21swapper/107:48:481
2793299196,8cyclictest0-21swapper/107:53:481
2793299195,7cyclictest0-21swapper/110:13:421
2793299195,12cyclictest0-21swapper/108:03:451
2793299193,11cyclictest0-21swapper/111:14:051
2793299193,11cyclictest0-21swapper/107:38:441
27932991915,2cyclictest705-21ntpd08:48:101
27932991915,2cyclictest705-21ntpd08:48:101
27932991912,4cyclictest5386-21apache209:48:401
27932991910,8cyclictest0-21swapper/109:28:371
27932991910,4cyclictest0-21swapper/111:23:331
27932991910,3cyclictest0-21swapper/107:08:411
27932991910,2cyclictest0-21swapper/109:33:331
27931991918,0cyclictest81ktimersoftd/009:36:560
27931991910,7cyclictest0-21swapper/009:57:290
27931991910,5cyclictest0-21swapper/011:52:150
2793199190,8cyclictest13541-21irqstats10:33:460
2699321910,0sleep00-21swapper/010:50:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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