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2026-06-28 - 21:21
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Sun Jun 28, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139942870,0sleep013993-21seq11:43:550
1299726754,9sleep10-21swapper/107:05:011
1298526756,7sleep00-21swapper/007:04:540
1351899407,3cyclictest0-21swapper/012:33:480
13518993535,0cyclictest7-21ksoftirqd/011:33:590
13518993433,0cyclictest81ktimersoftd/008:08:510
13518993431,2cyclictest7383-21open_inodes09:23:520
13518993331,1cyclictest22357-21ntp_states09:43:510
13518993330,2cyclictest3749-21timerwakeupswit08:03:530
13518993330,2cyclictest27437-21diskmemload12:20:320
13518993330,2cyclictest20876-21ssh09:42:370
13518993330,2cyclictest19866-21apache_processe11:53:440
13518993330,2cyclictest19235-21/usr/sbin/munin08:43:550
13518993329,2cyclictest636-21nscd10:16:290
13518993310,1cyclictest0-21swapper/010:04:120
13518993230,1cyclictest27138-21irqstats11:18:480
13518993230,1cyclictest20315-21python07:23:540
13518993230,1cyclictest17599-21df07:18:460
13518993230,1cyclictest16239-21apache_processe11:48:430
13518993229,2cyclictest8165-21if_eth210:08:480
13518993229,2cyclictest27437-21diskmemload12:31:430
13518993229,2cyclictest27437-21diskmemload11:06:120
13518993229,2cyclictest15329-21diskstats10:18:450
13518993229,2cyclictest11344-21sed08:23:530
13518993229,2cyclictest10708-21idleruntime09:28:450
13518993228,3cyclictest24659-21taskset11:14:420
13518993228,3cyclictest15476-21taskset08:34:390
13518993228,3cyclictest0-21swapper/012:13:290
13518993129,2cyclictest27437-21diskmemload09:14:210
13518993129,2cyclictest0-21swapper/011:08:500
13518993129,2cyclictest0-21swapper/010:58:590
13518993129,1cyclictest24460-21ntp_states11:58:510
13518993129,1cyclictest15456-21apache_processe07:13:450
13518993128,2cyclictest8323-21/usr/sbin/munin10:53:420
13518993128,2cyclictest744-21snmpd11:24:090
13518993128,2cyclictest5108-21seq09:20:340
13518993128,2cyclictest392-21taskset07:58:140
13518993128,2cyclictest2521-21hwlatdetect12:13:470
13518993128,2cyclictest23977-21expr08:58:470
13518993128,2cyclictest15372-21date07:13:340
13518993128,2cyclictest1199-21runrttasks10:33:530
13518993128,2cyclictest10671-21/usr/sbin/munin12:23:550
13518993128,2cyclictest104132sleep011:39:040
13518993128,2cyclictest0-21swapper/009:48:500
13518993110,19cyclictest0-21swapper/008:54:350
13518993027,2cyclictest4276-21ssh10:48:250
13518993027,2cyclictest28745-21sensors09:08:540
13518993027,2cyclictest22605-21taskset07:29:070
13518993027,2cyclictest0-21swapper/009:54:510
13518993027,2cyclictest0-21swapper/009:03:470
13518993026,2cyclictest27666-21hddtemp_smartct07:43:470
13518993024,5cyclictest0-21swapper/012:06:220
13518993024,5cyclictest0-21swapper/010:25:270
13518993023,5cyclictest25412-21apache_volume07:38:460
13518993018,9cyclictest22783-21/usr/sbin/munin10:28:490
13518992926,2cyclictest27437-21diskmemload11:32:410
13518992923,2cyclictest16266-21diskstats08:38:470
13518992922,7cyclictest31867-21ssh10:40:480
13519992810,1cyclictest0-21swapper/110:17:371
13519992810,13cyclictest0-21swapper/110:54:501
13518992826,2cyclictest27437-21diskmemload10:49:300
13518992824,3cyclictest16991-21rm09:37:170
13518992824,3cyclictest0-21swapper/008:13:490
13518992820,7cyclictest0-21swapper/007:58:450
13518992815,8cyclictest0-21swapper/008:48:490
13518992814,10cyclictest24978-21runrttasks07:36:060
13518992725,1cyclictest9136-21ntp_states08:18:510
13518992725,1cyclictest29235-21apache_volume07:48:450
1351999262,23cyclictest9262-21seq09:26:511
1351999260,17cyclictest0-21swapper/108:33:541
13518992621,5cyclictest0-21swapper/009:58:400
13519992520,3cyclictest23412-21apache210:03:371
13519992517,6cyclictest5207-21ssh11:33:401
13519992515,4cyclictest30822-21kworker/u4:109:32:271
1351999250,16cyclictest0-21swapper/111:43:541
13519992420,2cyclictest0-21swapper/109:53:481
13519992410,4cyclictest0-21swapper/112:19:251
13519992323,0cyclictest0-21swapper/110:26:311
13519992310,8cyclictest0-21swapper/109:46:191
13518992321,2cyclictest12195-21apache_accesses08:28:460
3176022210,0sleep10-21swapper/111:23:571
1351999221,19cyclictest27437-21diskmemload12:15:541
13519992211,7cyclictest167-21systemd-journal09:18:341
13519992211,5cyclictest0-21swapper/110:18:481
13519992210,7cyclictest0-21swapper/110:43:531
13519992210,6cyclictest0-21swapper/110:11:111
13519992210,4cyclictest0-21swapper/112:08:501
1351999220,14cyclictest19684-21ssh11:08:481
1351999218,11cyclictest1199-21runrttasks08:31:331
1351999214,9cyclictest0-21swapper/109:13:271
13519992116,0cyclictest0-21swapper/111:14:531
13519992110,6cyclictest0-21swapper/109:51:381
13519992110,3cyclictest0-21swapper/109:58:441
1351999210,18cyclictest23422-21kworker/1:008:16:251
1351999206,9cyclictest0-21swapper/107:18:541
1351999203,8cyclictest0-21swapper/112:28:441
1351999203,10cyclictest0-21swapper/107:13:521
13519992012,3cyclictest0-21swapper/111:50:151
13519992010,8cyclictest4524-21apache_volume08:08:461
13519992010,5cyclictest0-21swapper/108:18:441
13519992010,4cyclictest0-21swapper/107:43:461
13519992010,3cyclictest0-21swapper/107:23:471
13519992010,0cyclictest0-21swapper/111:58:431
1351999194,10cyclictest0-21swapper/108:53:491
13519991919,0cyclictest0-21swapper/107:41:091
13519991918,1cyclictest23386-21apache210:37:041
13519991910,5cyclictest0-21swapper/111:22:361
13519991910,4cyclictest0-21swapper/110:30:381
13519991910,3cyclictest0-21swapper/111:30:561
1191721910,0sleep10-21swapper/110:58:451
1758021810,0sleep10-21swapper/111:05:221
1351999184,7cyclictest0-21swapper/107:08:461
1351999184,6cyclictest0-21swapper/109:38:441
1351999183,10cyclictest23243-21grep07:33:341
13519991815,1cyclictest231ktimersoftd/111:58:301
13519991810,8cyclictest0-21swapper/112:27:071
13519991810,5cyclictest100150irq/106-eth1-rx12:04:541
13519991810,4cyclictest0-21swapper/111:39:361
13519991810,4cyclictest0-21swapper/107:58:581
13519991810,4cyclictest0-21swapper/107:48:471
13519991810,4cyclictest0-21swapper/107:28:461
13519991810,3cyclictest0-21swapper/108:58:511
195942178,0sleep10-21swapper/112:38:011
1351999172,7cyclictest1199-21runrttasks09:07:061
13519991710,5cyclictest0-21swapper/109:34:341
13519991710,4cyclictest0-21swapper/110:40:371
13519991710,4cyclictest0-21swapper/108:43:521
1351999168,6cyclictest100250irq/107-eth1-rx10:48:441
1351999163,8cyclictest0-21swapper/108:38:471
13519991616,0cyclictest0-21swapper/109:19:051
13519991615,1cyclictest3907-21sshd08:03:591
13519991611,5cyclictest23422-21kworker/1:007:55:011
13519991611,3cyclictest23412-21apache208:48:511
13519991510,2cyclictest0-21swapper/108:26:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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