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2026-09-10 - 19:04
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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 highest latencies:
System rackcslot2.osadl.org (updated Thu Sep 10, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
791727454,16sleep10-21swapper/107:04:211
798326956,8sleep00-21swapper/007:05:020
299682680,0sleep029966-21seq11:37:520
30802670,0sleep00-21swapper/011:44:290
43572610,0sleep10-21swapper/110:59:271
8441993122,6cyclictest18278-21apache212:21:510
8442992916,8cyclictest0-21swapper/111:48:351
844299272,24cyclictest31432-21/usr/sbin/munin10:53:151
8442992710,1cyclictest0-21swapper/109:38:291
844299270,1cyclictest0-21swapper/112:16:201
8441992710,15cyclictest0-21swapper/012:23:340
8441992710,11cyclictest0-21swapper/011:05:250
844299262,24cyclictest0-21swapper/110:20:431
8441992626,0cyclictest0-21swapper/010:48:500
8441992625,0cyclictest0-21swapper/011:24:280
8441992620,4cyclictest18250-21apache211:39:170
8442992523,1cyclictest0-21swapper/111:53:071
8442992519,5cyclictest23771-21munin-node10:43:511
8442992510,9cyclictest0-21swapper/110:37:101
8442992510,8cyclictest0-21swapper/109:03:151
8442992510,5cyclictest0-21swapper/112:18:081
8442992510,4cyclictest0-21swapper/110:13:521
8441992525,0cyclictest0-21swapper/008:53:440
8441992518,4cyclictest23771-21munin-node09:45:530
2269122510,4sleep10-21swapper/110:39:031
8442992417,4cyclictest18278-21apache209:51:111
8442992410,2cyclictest0-21swapper/112:26:231
8441992410,7cyclictest0-21swapper/007:23:130
8441992410,5cyclictest0-21swapper/010:23:060
125342240,0sleep00-21swapper/009:38:130
844299235,9cyclictest9435-21/usr/sbin/munin11:08:101
844299234,14cyclictest0-21swapper/112:03:161
844299232,20cyclictest0-21swapper/111:16:431
8442992318,4cyclictest18278-21apache209:28:101
844199232,20cyclictest0-21swapper/010:35:410
844199230,1cyclictest20046-21taskset08:59:250
844299226,8cyclictest0-21swapper/111:58:091
844299223,4cyclictest29860-21/usr/sbin/munin08:03:121
844299222,6cyclictest0-21swapper/108:58:161
8442992222,0cyclictest0-21swapper/109:55:411
8442992221,1cyclictest18250-21apache209:15:271
8442992217,3cyclictest18278-21apache207:51:471
8442992214,1cyclictest19437-21pmu-power12:08:131
8442992210,8cyclictest0-21swapper/107:28:101
8442992210,10cyclictest0-21swapper/109:33:301
844299220,1cyclictest0-21swapper/110:26:021
8441992220,1cyclictest81ktimersoftd/012:10:390
8441992218,3cyclictest18250-21apache207:34:580
8441992216,5cyclictest17268-1kworker/u5:012:31:190
8441992215,5cyclictest947-21sendmail-mta11:30:080
8441992210,7cyclictest0-21swapper/012:15:250
8441992210,4cyclictest100350irq/108-eth1-tx10:53:010
844299214,11cyclictest0-21swapper/107:23:061
8442992116,3cyclictest0-21swapper/111:27:031
844299211,15cyclictest0-21swapper/111:31:031
8442992110,9cyclictest0-21swapper/107:08:121
8442992110,7cyclictest0-21swapper/108:18:071
844299210,1cyclictest0-21swapper/109:09:501
844199216,8cyclictest0-21swapper/011:13:130
8441992110,6cyclictest0-21swapper/010:18:060
8441992110,4cyclictest0-21swapper/010:58:130
8441992110,1cyclictest0-21swapper/011:51:500
844199210,1cyclictest26186-21irqstats09:58:110
280922110,0sleep00-21swapper/010:11:060
844299204,12cyclictest0-21swapper/111:33:111
844299204,10cyclictest0-21swapper/108:38:081
8442992017,2cyclictest599-21avahi-daemon12:29:231
8442992015,2cyclictest8439-21cyclictest09:23:531
844299201,10cyclictest1-21systemd07:32:571
8442992010,9cyclictest0-21swapper/110:03:271
8442992010,5cyclictest0-21swapper/111:18:101
8442992010,5cyclictest0-21swapper/108:08:311
8442992010,4cyclictest0-21swapper/108:23:131
8442992010,0cyclictest0-21swapper/111:43:331
844199202,12cyclictest0-21swapper/009:13:070
8441992014,4cyclictest0-21swapper/010:47:030
8441992010,6cyclictest0-21swapper/009:28:060
8441992010,5cyclictest0-21swapper/008:08:070
8441992010,5cyclictest0-21swapper/007:08:060
8441992010,4cyclictest0-21swapper/010:03:280
844199200,1cyclictest25559-21chrt07:50:010
844299194,8cyclictest0-21swapper/107:13:061
844299194,10cyclictest0-21swapper/108:53:121
844299193,11cyclictest0-21swapper/107:18:151
8442991910,3cyclictest0-21swapper/110:01:311
844199195,9cyclictest0-21swapper/009:18:120
844199195,5cyclictest0-21swapper/011:53:200
844199194,7cyclictest0-21swapper/008:18:130
8441991919,0cyclictest0-21swapper/011:21:530
8441991919,0cyclictest0-21swapper/009:23:170
8441991910,5cyclictest0-21swapper/011:59:550
8441991910,4cyclictest0-21swapper/009:03:080
8441991910,4cyclictest0-21swapper/008:33:070
8441991910,3cyclictest0-21swapper/012:07:140
291921910,0sleep10-21swapper/108:16:371
844299183,8cyclictest0-21swapper/112:33:071
844299181,9cyclictest0-21swapper/110:08:121
8442991818,0cyclictest0-21swapper/111:39:421
8442991810,5cyclictest0-21swapper/109:18:051
8442991810,3cyclictest0-21swapper/110:48:001
8442991810,3cyclictest0-21swapper/108:28:101
8442991810,1cyclictest0-21swapper/111:04:561
844299180,9cyclictest0-21swapper/109:43:401
844199188,5cyclictest1199-21runrttasks08:05:590
844199183,8cyclictest0-21swapper/007:18:070
8441991811,5cyclictest10618-21cut07:13:080
8441991810,6cyclictest0-21swapper/008:17:300
8441991810,5cyclictest0-21swapper/010:30:260
8441991810,5cyclictest0-21swapper/009:53:140
8441991810,5cyclictest0-21swapper/007:53:060
8441991810,4cyclictest0-21swapper/012:34:540
8441991810,4cyclictest0-21swapper/007:43:140
8441991810,3cyclictest0-21swapper/008:43:070
8441991810,2cyclictest0-21swapper/010:13:350
8441991810,2cyclictest0-21swapper/009:33:040
844199180,3cyclictest0-21swapper/010:41:300
844299173,9cyclictest0-21swapper/108:43:111
844299173,6cyclictest0-21swapper/107:53:061
844299172,4cyclictest14873-21cstates08:48:091
844299171,6cyclictest0-21swapper/107:43:171
8442991710,5cyclictest0-21swapper/110:28:121
844199173,7cyclictest0-21swapper/008:23:100
844199172,9cyclictest17051-21processes07:28:130
8441991710,3cyclictest0-21swapper/011:10:120
844299162,6cyclictest0-21swapper/107:38:071
844199164,7cyclictest0-21swapper/008:38:140
844199163,7cyclictest0-21swapper/007:38:110
8441991611,0cyclictest15920-21ls08:48:160
8441991610,1cyclictest0-21swapper/009:48:450
2251921610,0sleep00-21swapper/009:08:060
8442991510,3cyclictest0-21swapper/108:00:021
844299150,6cyclictest9114-21cstates08:33:071
8441991510,2cyclictest0-21swapper/008:28:050
8441991310,0cyclictest0-21swapper/007:58:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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