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2026-06-20 - 21:43
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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 Sat Jun 20, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
445427952,9sleep10-21swapper/107:05:121
457627036,30sleep00-21swapper/007:06:300
87742680,0sleep10-21swapper/112:33:191
4964993434,0cyclictest0-21swapper/010:03:260
4964992929,0cyclictest0-21swapper/010:55:230
496599282,22cyclictest0-21swapper/110:17:341
4965992819,7cyclictest14814-21apache211:56:271
4964992710,10cyclictest0-21swapper/009:35:590
4965992610,5cyclictest0-21swapper/110:58:501
4964992610,12cyclictest0-21swapper/011:51:310
496499260,21cyclictest0-21swapper/011:59:430
496599250,2cyclictest14901-21ssh11:13:381
496599250,23cyclictest27589-21cat09:18:541
496499253,19cyclictest10037-21rm10:23:050
4964992510,11cyclictest0-21swapper/009:21:310
496499250,17cyclictest0-21swapper/012:08:490
4965992410,8cyclictest0-21swapper/110:26:001
4965992410,1cyclictest0-21swapper/111:52:541
496599240,3cyclictest0-21swapper/111:43:551
4964992424,0cyclictest0-21swapper/011:32:160
4964992424,0cyclictest0-21swapper/011:03:570
4964992410,9cyclictest0-21swapper/009:44:510
4964992410,6cyclictest0-21swapper/012:03:580
4964992410,11cyclictest0-21swapper/009:32:490
4965992319,3cyclictest14814-21apache211:35:061
4965992318,2cyclictest14814-21apache211:39:101
4965992311,6cyclictest231ktimersoftd/110:39:301
4965992310,3cyclictest0-21swapper/109:42:521
4965992310,12cyclictest0-21swapper/107:38:511
496599230,11cyclictest0-21swapper/110:53:521
4964992317,2cyclictest14814-21apache212:32:440
4964992313,4cyclictest0-21swapper/009:16:210
4964992310,7cyclictest0-21swapper/010:07:080
4964992310,6cyclictest0-21swapper/011:15:290
496599227,11cyclictest0-21swapper/112:12:131
496599225,10cyclictest0-21swapper/108:23:541
496599224,17cyclictest14857-21kworker/1:111:20:341
496599224,11cyclictest0-21swapper/111:58:591
4965992214,2cyclictest31762-21/usr/sbin/munin10:08:521
4965992210,8cyclictest0-21swapper/109:33:071
4965992210,6cyclictest0-21swapper/108:58:501
496499222,16cyclictest18840-21diskmemload12:36:070
4964992219,2cyclictest14788-21apache209:10:100
4964992217,1cyclictest0-21swapper/007:43:500
496499221,14cyclictest0-21swapper/011:10:070
4964992210,7cyclictest0-21swapper/012:14:340
4964992210,6cyclictest0-21swapper/007:23:520
4964992210,3cyclictest0-21swapper/009:42:540
2979222210,1sleep10-21swapper/112:17:401
496599217,7cyclictest13855-21cron10:28:381
496599215,8cyclictest0-21swapper/108:03:501
496599214,10cyclictest0-21swapper/112:03:561
4965992119,1cyclictest231ktimersoftd/111:24:101
4965992112,8cyclictest25554-21apache207:21:031
4965992111,5cyclictest593-21lldpd09:50:131
4965992111,5cyclictest0-21swapper/108:16:241
4965992110,4cyclictest0-21swapper/108:48:521
4965992110,3cyclictest0-21swapper/108:28:491
4964992111,7cyclictest100250irq/107-eth1-rx09:51:510
4964992110,8cyclictest0-21swapper/010:38:570
4964992110,4cyclictest0-21swapper/010:08:500
1069622110,1sleep00-21swapper/008:44:310
496599204,8cyclictest24303-21apache_accesses09:58:491
496599203,11cyclictest1802-21/usr/sbin/munin12:23:481
496599202,12cyclictest0-21swapper/107:53:491
4965992020,0cyclictest14788-21apache208:38:541
4965992018,1cyclictest0-21swapper/109:23:591
4965992011,6cyclictest14788-21apache209:36:161
4965992010,7cyclictest0-21swapper/110:51:041
4965992010,5cyclictest0-21swapper/107:28:561
4965992010,3cyclictest0-21swapper/108:18:521
4965992010,3cyclictest0-21swapper/107:44:001
496499203,12cyclictest0-21swapper/008:38:500
4964992014,4cyclictest14814-21apache211:42:260
4964992013,6cyclictest21641-1kworker/u5:011:26:080
4964992013,4cyclictest30066-21perf08:13:390
496499201,1cyclictest0-21swapper/011:58:300
4964992011,8cyclictest0-21swapper/010:33:060
4964992010,6cyclictest0-21swapper/007:51:030
4964992010,5cyclictest0-21swapper/011:43:560
4964992010,5cyclictest0-21swapper/007:53:580
4964992010,4cyclictest0-21swapper/012:24:040
4964992010,4cyclictest0-21swapper/009:27:420
40522010,0sleep00-21swapper/012:21:290
2393122010,0sleep00-21swapper/009:58:230
496599193,11cyclictest0-21swapper/111:28:591
496599191,17cyclictest14857-21kworker/1:111:17:501
496599191,13cyclictest0-21swapper/112:37:591
4965991910,4cyclictest0-21swapper/108:08:521
4965991910,4cyclictest0-21swapper/107:13:511
4965991910,3cyclictest0-21swapper/110:35:571
496599190,11cyclictest0-21swapper/112:18:491
496499191,3cyclictest13044-21hddtemp_smartct07:28:520
4964991913,5cyclictest648-21nscd10:33:510
4964991911,3cyclictest0-21swapper/008:13:550
4964991910,5cyclictest0-21swapper/007:34:010
4964991910,4cyclictest0-21swapper/011:01:210
4964991910,4cyclictest0-21swapper/008:28:540
4964991910,4cyclictest0-21swapper/008:28:380
4964991910,3cyclictest0-21swapper/011:38:250
4964991910,3cyclictest0-21swapper/008:58:380
4964991910,0cyclictest0-21swapper/010:27:400
496499190,12cyclictest0-21swapper/008:33:550
168102199,1sleep00-21swapper/009:02:400
496599187,3cyclictest6792-21apache_volume10:18:501
496599184,5cyclictest23893-21/usr/sbin/munin09:13:571
496599184,11cyclictest0-21swapper/107:23:531
496599183,9cyclictest0-21swapper/109:03:591
496599183,9cyclictest0-21swapper/108:48:381
496599182,5cyclictest0-21swapper/107:58:561
496599182,4cyclictest19062-21/usr/sbin/munin09:08:581
496599182,10cyclictest0-21swapper/111:08:181
4965991817,1cyclictest14788-21apache210:45:431
4965991815,3cyclictest0-21swapper/110:05:331
4965991811,3cyclictest0-21swapper/109:43:541
496499189,3cyclictest27899-21rm10:46:450
496499183,7cyclictest19498-21ntp_states11:18:560
496499182,9cyclictest0-21swapper/007:08:510
496499182,15cyclictest0-21swapper/010:13:560
496499182,11cyclictest0-21swapper/009:03:500
4964991812,4cyclictest0-21swapper/007:38:580
4964991810,4cyclictest0-21swapper/010:48:550
4964991810,3cyclictest0-21swapper/007:13:500
496599174,8cyclictest0-21swapper/107:08:551
496599172,9cyclictest21061-21/usr/sbin/munin09:53:521
4965991716,0cyclictest100150irq/106-eth1-rx08:33:511
4965991712,3cyclictest4962-21cyclictest08:53:511
4965991710,0cyclictest0-21swapper/107:33:391
496499173,10cyclictest0-21swapper/008:18:570
4964991710,6cyclictest0-21swapper/007:59:010
4964991710,2cyclictest0-21swapper/007:18:530
496599167,7cyclictest0-21swapper/107:48:541
4964991610,4cyclictest0-21swapper/008:08:300
496499157,4cyclictest0-21swapper/008:48:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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