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2026-05-16 - 13:54
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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 Sat May 16, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2888726957,8sleep00-21swapper/019:07:200
2888726957,8sleep00-21swapper/019:07:200
2871526956,8sleep10-21swapper/119:05:331
2871526956,8sleep10-21swapper/119:05:331
253992680,0sleep00-21swapper/022:53:210
29224993413,15cyclictest24-21ksoftirqd/122:16:381
29223993310,1cyclictest0-21swapper/021:43:270
2922399320,29cyclictest21175-21kworker/0:220:28:530
29224993030,0cyclictest0-21swapper/121:16:001
2922399303,26cyclictest21175-21kworker/0:219:28:470
2922399301,28cyclictest27545-21kworker/0:023:25:450
2922399300,29cyclictest16487-21kworker/0:200:16:170
29224992910,9cyclictest0-21swapper/123:29:001
2922399296,22cyclictest27545-21kworker/0:022:32:290
2922399290,24cyclictest21175-21kworker/0:220:41:350
29224992810,14cyclictest0-21swapper/119:58:151
29224992810,0cyclictest0-21swapper/119:51:181
29223992811,16cyclictest21175-21kworker/0:220:30:130
2922399280,27cyclictest21175-21kworker/0:220:03:250
2922399279,17cyclictest21175-21kworker/0:221:18:170
2922399278,18cyclictest21175-21kworker/0:220:51:130
2922399276,20cyclictest0-21swapper/021:38:430
29223992727,0cyclictest0-21swapper/022:15:010
2922399270,26cyclictest21175-21kworker/0:220:13:550
29224992626,0cyclictest0-21swapper/119:35:431
29224992610,8cyclictest0-21swapper/122:59:581
29223992619,7cyclictest21175-21kworker/0:220:56:230
29223992619,7cyclictest21175-21kworker/0:220:56:230
29223992610,11cyclictest0-21swapper/021:13:260
29223992610,11cyclictest0-21swapper/021:04:070
29224992518,6cyclictest744-21snmpd23:07:061
2922499250,0cyclictest24722-21grep23:34:141
29223992523,1cyclictest651-21nscd22:26:220
29223992523,1cyclictest29995-21ntp_kernel_pll_19:09:130
29223992511,3cyclictest0-21swapper/023:02:510
29224992423,1cyclictest0-21swapper/121:30:501
2922499240,7cyclictest25669-21kworker/u4:023:23:301
2922399242,21cyclictest0-21swapper/023:39:310
29223992419,3cyclictest10489-21diskmemload21:30:190
2922399241,23cyclictest21175-21kworker/0:220:18:490
2922399241,20cyclictest21175-21kworker/0:219:31:050
29223992410,7cyclictest0-21swapper/021:24:140
29223992410,6cyclictest0-21swapper/022:37:360
29224992315,4cyclictest29221-21cyclictest22:09:111
29224992311,6cyclictest0-21swapper/120:54:131
29224992311,6cyclictest0-21swapper/120:54:131
29224992310,4cyclictest0-21swapper/100:25:511
2922399232,1cyclictest31998-21/usr/sbin/munin22:19:140
29223992310,7cyclictest0-21swapper/000:05:370
29223992310,6cyclictest100250irq/107-eth1-rx23:43:590
29223992310,2cyclictest0-21swapper/023:53:350
29223992310,1cyclictest0-21swapper/022:42:040
29223992310,0cyclictest0-21swapper/021:22:100
2922399230,22cyclictest21175-21kworker/0:221:03:550
2922399230,1cyclictest0-21swapper/000:29:390
2922399230,1cyclictest0-21swapper/000:29:390
2922499225,12cyclictest0-21swapper/123:54:161
29224992221,1cyclictest8032-21apache200:20:221
29224992210,5cyclictest0-21swapper/122:50:431
29224992210,5cyclictest0-21swapper/119:29:091
29224992210,4cyclictest0-21swapper/122:19:141
2922499220,18cyclictest0-21swapper/122:24:111
29224992120,0cyclictest8005-21apache223:44:271
29224992111,6cyclictest100150irq/106-eth1-rx21:24:371
29224992110,7cyclictest0-21swapper/121:58:491
29224992110,4cyclictest0-21swapper/123:59:541
2922499210,10cyclictest0-21swapper/119:09:121
2922399214,9cyclictest0-21swapper/000:24:160
29223992117,3cyclictest8005-21apache223:16:070
29223992111,4cyclictest0-21swapper/000:19:130
29223992111,0cyclictest29221-21cyclictest20:20:280
29223992110,9cyclictest0-21swapper/023:37:500
29223992110,4cyclictest0-21swapper/023:58:310
29223992110,3cyclictest0-21swapper/023:59:080
1008222110,0sleep10-21swapper/119:42:571
2922499205,9cyclictest0-21swapper/100:29:101
2922499205,9cyclictest0-21swapper/100:29:101
2922499204,5cyclictest0-21swapper/121:47:531
2922499203,7cyclictest14561-21awk21:13:561
2922499203,13cyclictest0-21swapper/121:34:121
29224992015,4cyclictest802-21apache219:59:241
29224992011,4cyclictest0-21swapper/123:14:591
29224992011,1cyclictest2909-21/usr/sbin/munin20:49:091
29224992010,6cyclictest0-21swapper/121:42:571
29224992010,5cyclictest0-21swapper/123:24:081
2922399209,6cyclictest0-21swapper/000:38:000
2922399208,6cyclictest0-21swapper/021:44:080
29223992018,1cyclictest8032-21apache223:19:400
29223992013,4cyclictest13235-1kworker/u5:222:12:460
29223992010,5cyclictest0-21swapper/022:57:250
29223992010,5cyclictest0-21swapper/021:59:050
29223992010,5cyclictest0-21swapper/019:44:080
29223992010,3cyclictest0-21swapper/023:04:130
2922399200,9cyclictest0-21swapper/019:54:110
2665422010,0sleep10-21swapper/120:24:151
2322222010,0sleep10-21swapper/122:07:031
2293922010,0sleep00-21swapper/022:06:280
2922499197,5cyclictest0-21swapper/100:36:311
2922499196,9cyclictest10489-21diskmemload22:00:191
2922499194,8cyclictest0-21swapper/100:09:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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