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2025-12-04 - 22:13
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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 Thu Dec 04, 2025 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
306302750,1sleep11245599cyclictest11:17:001
119132730,1sleep00-21swapper/012:17:010
191572710,1sleep00-21swapper/012:27:020
287082690,1sleep00-21swapper/007:46:560
1217926956,8sleep00-21swapper/007:05:430
1203826855,8sleep10-21swapper/107:04:151
205602660,1sleep00-21swapper/008:51:360
228962640,2sleep01245499cyclictest11:06:570
12454993331,1cyclictest7-21ksoftirqd/009:26:540
12455992928,0cyclictest24-21ksoftirqd/111:31:581
12455992922,1cyclictest24-21ksoftirqd/109:59:441
12454992926,2cyclictest26900-21ssh10:29:540
12454992825,1cyclictest7-21ksoftirqd/012:31:580
12455992710,1cyclictest0-21swapper/109:30:321
12454992725,1cyclictest7-21ksoftirqd/010:15:410
12455992622,1cyclictest24-21ksoftirqd/110:18:351
12454992619,1cyclictest7-21ksoftirqd/009:02:020
12454992610,0cyclictest0-21swapper/010:21:570
1245499260,22cyclictest0-21swapper/012:10:460
12455992523,2cyclictest24-21ksoftirqd/107:46:401
12455992523,1cyclictest0-21swapper/111:52:011
12455992522,0cyclictest24-21ksoftirqd/111:46:401
12455992520,1cyclictest24-21ksoftirqd/110:12:221
12455992517,5cyclictest22356-21apache210:59:151
12454992521,3cyclictest22330-21apache210:59:150
1245499251,23cyclictest31691-21latency_hist10:36:410
1245499251,18cyclictest7-21ksoftirqd/009:39:130
12455992424,0cyclictest24-21ksoftirqd/108:11:401
12455992423,0cyclictest24-21ksoftirqd/112:16:571
12455992423,0cyclictest24-21ksoftirqd/108:16:551
12455992421,2cyclictest24-21ksoftirqd/112:11:591
12455992421,2cyclictest24-21ksoftirqd/109:46:571
12454992422,1cyclictest7-21ksoftirqd/009:11:570
12454992418,1cyclictest7-21ksoftirqd/011:51:000
12454992418,1cyclictest7-21ksoftirqd/009:59:500
1245499240,17cyclictest0-21swapper/010:48:480
1245499240,17cyclictest0-21swapper/010:48:480
12455992322,0cyclictest24-21ksoftirqd/111:11:551
1245599232,15cyclictest26399-21diskmemload10:26:341
12455992321,1cyclictest24-21ksoftirqd/108:21:571
12455992317,4cyclictest22330-21apache211:56:571
12455992313,8cyclictest26399-21diskmemload10:40:121
1245499233,4cyclictest91rcu_preempt09:06:540
12454992321,1cyclictest7-21ksoftirqd/009:32:000
12454992319,3cyclictest7-21ksoftirqd/010:41:450
12454992317,2cyclictest7-21ksoftirqd/010:51:590
1245499231,1cyclictest0-21swapper/009:55:240
758522210,0sleep10-21swapper/109:22:061
1245599226,8cyclictest231ktimersoftd/110:06:521
1245599223,4cyclictest91rcu_preempt10:31:551
12455992221,0cyclictest4996-21kworker/u4:010:48:481
12455992221,0cyclictest4996-21kworker/u4:010:48:481
12455992220,1cyclictest24-21ksoftirqd/111:09:521
12455992219,2cyclictest24-21ksoftirqd/108:01:501
12455992218,1cyclictest24-21ksoftirqd/111:03:421
12455992216,1cyclictest24-21ksoftirqd/110:02:051
12455992216,1cyclictest24-21ksoftirqd/109:54:421
12455992216,0cyclictest0-21swapper/112:26:541
12455992210,7cyclictest0-21swapper/107:51:471
12455992210,3cyclictest0-21swapper/108:12:011
12455992210,11cyclictest0-21swapper/107:22:001
1245599220,0cyclictest26399-21diskmemload11:26:431
1245499224,8cyclictest7967-21ssh12:11:580
12454992222,0cyclictest0-21swapper/008:02:130
12454992221,1cyclictest7-21ksoftirqd/011:56:400
12454992220,1cyclictest97750irq/106-eth1-rx11:31:520
12454992218,1cyclictest7-21ksoftirqd/009:45:070
12454992211,2cyclictest7-21ksoftirqd/007:21:410
12454992210,6cyclictest0-21swapper/007:15:500
1245499220,2cyclictest0-21swapper/009:16:580
12455992116,3cyclictest18828-21apache_accesses08:46:531
12455992113,3cyclictest24-21ksoftirqd/110:30:571
12455992110,3cyclictest0-21swapper/107:20:341
12455992110,0cyclictest0-21swapper/109:45:491
1245599210,13cyclictest0-21swapper/109:31:561
1245599210,12cyclictest98050irq/109-eth1-tx12:07:591
1245599210,12cyclictest0-21swapper/111:22:011
1245499214,9cyclictest0-21swapper/008:36:540
12454992119,1cyclictest7-21ksoftirqd/007:41:540
12454992118,2cyclictest7-21ksoftirqd/012:25:370
12454992117,3cyclictest1111-21runrttasks12:04:490
12454992117,1cyclictest7-21ksoftirqd/011:39:480
12454992117,1cyclictest7-21ksoftirqd/010:20:550
12454992110,4cyclictest0-21swapper/011:23:150
12454992110,4cyclictest0-21swapper/010:36:520
12454992110,3cyclictest0-21swapper/008:21:520
1245499210,4cyclictest0-21swapper/009:48:160
1245599203,3cyclictest91rcu_preempt09:02:021
1245599203,2cyclictest91rcu_preempt12:05:121
12455992019,1cyclictest24-21ksoftirqd/111:47:091
12455992010,4cyclictest24-21ksoftirqd/109:07:021
12455992010,2cyclictest0-21swapper/110:42:301
1245499208,4cyclictest20749-21apache_volume08:51:550
1245499205,3cyclictest91rcu_preempt10:06:520
12454992016,1cyclictest7-21ksoftirqd/009:26:140
12454992014,4cyclictest22356-21apache210:03:060
12454992010,4cyclictest0-21swapper/007:51:510
12454992010,0cyclictest0-21swapper/011:43:270
12454992010,0cyclictest0-21swapper/007:26:550
2312421910,0sleep10-21swapper/112:32:171
1413721910,0sleep10-21swapper/107:10:181
1413721910,0sleep10-21swapper/107:10:181
1245599192,14cyclictest0-21swapper/108:51:551
12455991919,0cyclictest24-21ksoftirqd/111:36:561
12455991919,0cyclictest24-21ksoftirqd/109:14:431
12455991917,1cyclictest20728-21if_eth107:26:551
12455991916,1cyclictest0-21swapper/112:25:061
12455991912,5cyclictest24-21ksoftirqd/108:37:401
1245599191,10cyclictest91rcu_preempt07:40:191
12455991910,5cyclictest0-21swapper/108:31:581
12455991910,2cyclictest0-21swapper/107:11:541
1245599190,14cyclictest0-21swapper/109:17:551
1245499196,5cyclictest26399-21diskmemload11:56:540
1245499194,8cyclictest0-21swapper/008:07:040
1245499194,11cyclictest0-21swapper/011:16:550
12454991914,2cyclictest8165-21sh11:30:200
1245499191,15cyclictest0-21swapper/011:13:200
12454991910,4cyclictest0-21swapper/011:01:560
1245499190,1cyclictest0-21swapper/007:39:400
12455991817,0cyclictest0-21swapper/107:58:471
12455991810,6cyclictest0-21swapper/107:47:421
1245499188,7cyclictest32029-21/usr/sbin/munin07:56:510
12454991815,2cyclictest12425-21users08:27:010
12454991810,4cyclictest0-21swapper/008:12:010
12455991710,6cyclictest0-21swapper/110:54:181
12455991710,0cyclictest0-21swapper/109:37:321
1245499172,8cyclictest0-21swapper/008:16:580
12454991712,4cyclictest0-21swapper/008:56:560
1245599163,11cyclictest0-21swapper/108:41:521
12455991610,0cyclictest0-21swapper/108:27:011
12454991610,5cyclictest0-21swapper/007:09:170
12454991610,5cyclictest0-21swapper/007:09:170
12454991610,1cyclictest0-21swapper/008:31:530
1245499160,5cyclictest0-21swapper/008:45:590
12455991510,2cyclictest0-21swapper/107:31:421
12455991410,3cyclictest0-21swapper/109:00:131
1245499144,3cyclictest0-21swapper/007:21:530
12454991410,2cyclictest0-21swapper/007:31:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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