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2026-04-07 - 21:03
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Tue Apr 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2217926956,8sleep10-21swapper/107:05:041
2218726755,8sleep00-21swapper/007:05:090
289752650,0sleep10-21swapper/108:49:131
204352600,0sleep120436-21which11:44:331
22761993510,0cyclictest0-21swapper/011:36:010
22761993011,18cyclictest0-21swapper/012:34:320
22762992929,0cyclictest0-21swapper/111:38:591
22761992910,19cyclictest0-21swapper/007:14:090
22762992710,13cyclictest0-21swapper/109:48:041
22762992623,2cyclictest0-21swapper/110:34:161
22762992620,5cyclictest705-21ntpd08:58:481
22762992617,6cyclictest0-21swapper/112:09:261
22761992626,0cyclictest0-21swapper/010:03:010
22761992624,1cyclictest32659-21apache210:37:440
22761992610,4cyclictest0-21swapper/012:29:200
22761992610,2cyclictest0-21swapper/010:30:370
22762992520,4cyclictest705-21ntpd09:21:081
22762992510,1cyclictest0-21swapper/108:20:261
22762992510,12cyclictest0-21swapper/110:59:471
22762992510,11cyclictest0-21swapper/109:29:321
2276299250,24cyclictest0-21swapper/111:51:461
2276199258,16cyclictest0-21swapper/007:53:330
2276199253,3cyclictest2395-21latency_hist09:04:130
22761992523,1cyclictest0-21swapper/009:41:410
22761992523,1cyclictest0-21swapper/009:41:410
22761992510,6cyclictest0-21swapper/009:09:470
22761992510,12cyclictest0-21swapper/009:14:300
22762992422,1cyclictest14339-21ssh12:21:141
22762992420,3cyclictest32659-21apache210:44:061
22761992423,1cyclictest0-21swapper/009:19:230
2276299236,13cyclictest0-21swapper/108:49:351
2276299235,7cyclictest4292-21diskmemload12:29:261
22762992320,2cyclictest705-21ntpd09:54:491
22762992310,7cyclictest0-21swapper/109:38:331
22761992310,7cyclictest0-21swapper/009:54:410
2276299224,11cyclictest0-21swapper/108:29:281
22762992221,0cyclictest0-21swapper/111:30:291
22762992221,0cyclictest0-21swapper/111:30:291
22762992215,4cyclictest32632-21apache212:07:251
22762992215,4cyclictest32632-21apache211:22:491
22762992214,6cyclictest32632-21apache210:16:441
2276299221,3cyclictest0-21swapper/112:17:241
2276299221,16cyclictest0-21swapper/110:29:201
22762992210,6cyclictest0-21swapper/110:54:261
22762992210,5cyclictest0-21swapper/111:09:251
22762992210,11cyclictest0-21swapper/110:47:321
2276199222,13cyclictest0-21swapper/007:44:320
2276199222,0cyclictest0-21swapper/009:50:200
22761992217,1cyclictest0-21swapper/011:12:390
22761992212,7cyclictest0-21swapper/011:29:290
22761992212,7cyclictest0-21swapper/011:29:290
22761992211,5cyclictest0-21swapper/012:19:250
22761992211,4cyclictest0-21swapper/008:11:450
22761992210,5cyclictest0-21swapper/008:54:260
22761992210,11cyclictest0-21swapper/009:34:300
258432210,0sleep00-21swapper/010:22:490
2276299217,10cyclictest0-21swapper/108:39:281
2276299215,9cyclictest0-21swapper/107:14:301
22762992118,3cyclictest705-21ntpd08:13:551
22762992118,2cyclictest32632-21apache210:00:201
22762992110,6cyclictest0-21swapper/110:04:181
22762992110,5cyclictest0-21swapper/107:54:221
2276199214,16cyclictest0-21swapper/010:07:540
22761992112,6cyclictest32659-21apache210:56:400
2276199211,15cyclictest21662-21forks08:29:250
22761992110,4cyclictest0-21swapper/008:44:320
22761992110,3cyclictest0-21swapper/011:14:350
22761992110,10cyclictest0-21swapper/011:04:270
426822010,0sleep10-21swapper/109:53:001
2276299206,12cyclictest0-21swapper/112:24:291
2276299204,13cyclictest0-21swapper/107:19:341
22762992012,6cyclictest100150irq/106-eth1-rx11:59:521
22762992012,5cyclictest100150irq/106-eth1-rx10:19:201
22762992010,8cyclictest0-21swapper/107:59:251
22762992010,7cyclictest0-21swapper/109:14:251
22762992010,5cyclictest0-21swapper/111:41:241
22762992010,5cyclictest0-21swapper/109:39:241
22762992010,5cyclictest0-21swapper/109:39:241
22762992010,4cyclictest0-21swapper/107:35:271
22762992010,3cyclictest0-21swapper/107:24:261
2276299200,13cyclictest0-21swapper/109:24:301
2276299200,11cyclictest4292-21diskmemload09:09:261
2276199205,4cyclictest31711-21ls07:29:340
22761992016,2cyclictest19125-1kworker/u5:110:19:060
22761992013,4cyclictest32632-21apache210:10:060
22761992013,4cyclictest100150irq/106-eth1-rx07:19:260
22761992010,5cyclictest0-21swapper/011:19:240
22761992010,5cyclictest0-21swapper/007:59:250
22761992010,4cyclictest0-21swapper/009:27:290
22761992010,4cyclictest0-21swapper/007:25:030
2276299195,9cyclictest0-21swapper/111:04:261
2276299193,9cyclictest0-21swapper/110:11:191
22762991915,3cyclictest22759-21cyclictest12:36:591
22762991910,9cyclictest0-21swapper/111:16:251
22762991910,7cyclictest0-21swapper/107:29:311
22762991910,5cyclictest0-21swapper/111:24:261
22762991910,4cyclictest0-21swapper/111:54:341
2276299190,12cyclictest0-21swapper/107:49:271
2276199195,6cyclictest0-21swapper/012:14:350
2276199192,9cyclictest4037-21munin-run07:44:140
22761991910,5cyclictest0-21swapper/007:34:140
22761991910,4cyclictest0-21swapper/011:39:310
22761991910,4cyclictest0-21swapper/011:24:250
22761991910,3cyclictest0-21swapper/012:24:250
22761991910,3cyclictest0-21swapper/008:14:300
2276199190,18cyclictest0-21swapper/010:54:100
2276299188,6cyclictest100150irq/106-eth1-rx10:49:281
22762991816,1cyclictest284472sleep110:25:351
22762991810,6cyclictest0-21swapper/107:45:511
22762991810,4cyclictest0-21swapper/107:09:251
2276199185,10cyclictest0-21swapper/007:54:310
2276199184,4cyclictest4292-21diskmemload11:49:140
2276199183,8cyclictest0-21swapper/008:34:300
2276199183,10cyclictest0-21swapper/010:24:300
22761991817,0cyclictest0-21swapper/010:39:270
22761991810,5cyclictest0-21swapper/009:29:260
22761991810,4cyclictest0-21swapper/011:55:480
22761991810,3cyclictest0-21swapper/011:53:530
22761991810,1cyclictest0-21swapper/012:05:150
2276299172,8cyclictest2620-21hddtemp_smartct07:39:271
22762991716,0cyclictest0-21swapper/108:14:341
22762991712,0cyclictest2536-21/usr/sbin/munin09:04:281
2276199178,3cyclictest4292-21diskmemload11:02:040
22761991715,2cyclictest32632-21apache208:39:270
22761991712,3cyclictest802-21apache212:01:120
22761991710,6cyclictest0-21swapper/010:46:530
22761991710,2cyclictest0-21swapper/008:49:320
22761991710,2cyclictest0-21swapper/008:04:250
2276199170,1cyclictest0-21swapper/012:11:390
2276299166,4cyclictest0-21swapper/108:34:271
22762991616,0cyclictest0-21swapper/108:06:231
2276299161,10cyclictest0-21swapper/108:59:301
22761991610,5cyclictest0-21swapper/007:16:220
22761991610,3cyclictest0-21swapper/009:44:250
22761991610,3cyclictest0-21swapper/008:29:130
22761991610,1cyclictest0-21swapper/009:09:130
2276299155,7cyclictest0-21swapper/108:24:271
22761991411,3cyclictest0-21swapper/008:19:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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