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2025-12-10 - 17:54
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Wed Dec 10, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158726954,8sleep10-21swapper/107:04:491
245482670,0sleep00-21swapper/010:41:530
195732670,0sleep00-21swapper/011:16:540
133426754,8sleep00-21swapper/007:02:110
187402650,0sleep10-21swapper/107:47:011
178362650,0sleep10-21swapper/111:14:491
1945993410,5cyclictest10900-21kworker/u4:111:09:410
1946993310,22cyclictest0-21swapper/111:18:361
1945993310,23cyclictest0-21swapper/009:21:330
1945993310,22cyclictest0-21swapper/011:30:060
1946993210,1cyclictest0-21swapper/111:36:021
1945993110,15cyclictest0-21swapper/010:47:510
1945993010,3cyclictest0-21swapper/010:59:100
1945993010,19cyclictest0-21swapper/007:36:070
1945993010,0cyclictest0-21swapper/011:33:190
1945992826,1cyclictest0-21swapper/011:47:120
1945992810,17cyclictest0-21swapper/010:37:240
1945992810,14cyclictest0-21swapper/011:38:060
1946992725,1cyclictest30064-21latency_hist10:06:381
1946992710,3cyclictest0-21swapper/109:19:581
194699270,26cyclictest0-21swapper/111:29:191
1945992727,0cyclictest0-21swapper/010:16:550
1885822710,0sleep10-21swapper/110:33:051
1946992610,1cyclictest0-21swapper/110:25:531
1945992626,0cyclictest0-21swapper/012:13:410
1945992617,6cyclictest9189-21ssh12:27:240
194599261,22cyclictest0-21swapper/010:56:200
194599251,23cyclictest0-21swapper/012:06:120
1946992424,0cyclictest0-21swapper/108:35:361
194699242,21cyclictest0-21swapper/112:11:571
1946992410,7cyclictest0-21swapper/111:21:551
1946992410,7cyclictest0-21swapper/110:51:481
1945992422,1cyclictest0-21swapper/010:02:440
1945992410,8cyclictest0-21swapper/010:28:330
194599240,23cyclictest0-21swapper/011:53:470
194599240,1cyclictest0-21swapper/009:07:140
1946992318,4cyclictest11792-21apache209:10:191
1946992310,7cyclictest0-21swapper/110:13:011
194599233,10cyclictest1111-21runrttasks07:48:120
1945992321,1cyclictest0-21swapper/009:13:030
1945992312,7cyclictest11792-21apache211:26:380
194599230,5cyclictest0-21swapper/010:09:140
194699224,15cyclictest0-21swapper/109:12:471
1946992221,1cyclictest11792-21apache212:20:071
1946992217,4cyclictest11769-21apache212:06:421
1946992210,8cyclictest0-21swapper/109:48:271
1946992210,8cyclictest0-21swapper/107:53:381
1946992210,0cyclictest0-21swapper/110:01:241
194599227,8cyclictest0-21swapper/007:41:560
194599226,15cyclictest0-21swapper/008:58:010
194599224,17cyclictest0-21swapper/010:23:410
1945992216,4cyclictest1111-21runrttasks09:48:120
1518022210,0sleep10-21swapper/107:38:061
194699213,17cyclictest11720-21kworker/1:008:12:591
194699211,18cyclictest0-21swapper/112:24:581
1946992111,5cyclictest16107-21ssh11:55:031
1946992110,4cyclictest0-21swapper/110:41:581
194699210,4cyclictest0-21swapper/112:34:271
1945992116,4cyclictest11769-21apache209:04:090
1946992013,4cyclictest11769-21apache211:57:521
1946992010,7cyclictest0-21swapper/111:49:341
1946992010,5cyclictest0-21swapper/112:29:041
1946992010,5cyclictest0-21swapper/111:07:051
1946992010,5cyclictest0-21swapper/110:39:011
1946992010,4cyclictest0-21swapper/107:21:521
194699200,20cyclictest0-21swapper/109:43:271
194699200,10cyclictest0-21swapper/111:39:421
194599206,9cyclictest0-21swapper/008:41:540
194599204,12cyclictest493-21taskset08:26:490
1945992016,2cyclictest1943-21cyclictest11:58:470
1945992010,5cyclictest0-21swapper/008:46:540
3250221910,0sleep10-21swapper/108:23:451
2865321910,0sleep00-21swapper/008:13:470
2342121910,0sleep10-21swapper/112:04:221
194699199,4cyclictest0-21swapper/110:26:551
194699195,7cyclictest0-21swapper/107:26:591
194699194,13cyclictest5573-21ssh10:16:491
1946991911,5cyclictest97850irq/107-eth1-rx11:42:261
1946991911,3cyclictest0-21swapper/110:07:501
1946991910,5cyclictest0-21swapper/107:16:531
1946991910,4cyclictest0-21swapper/109:52:001
1945991919,0cyclictest81ktimersoftd/007:37:400
1945991918,0cyclictest0-21swapper/011:45:040
1945991917,2cyclictest11792-21apache210:31:440
1945991915,4cyclictest0-21swapper/011:05:030
1945991910,5cyclictest0-21swapper/011:14:300
1945991910,4cyclictest0-21swapper/009:51:400
1945991910,3cyclictest0-21swapper/008:21:500
194599190,19cyclictest0-21swapper/009:31:390
194599190,16cyclictest11796-21kworker/0:007:54:480
194599190,11cyclictest0-21swapper/007:21:560
194699185,6cyclictest25273-21/usr/sbin/munin08:06:491
194699185,6cyclictest22691-21sed07:57:011
194699183,9cyclictest0-21swapper/108:41:531
194699183,9cyclictest0-21swapper/108:01:521
194699183,7cyclictest13253-21timerandwakeup08:57:001
194699183,3cyclictest0-21swapper/110:48:561
1946991817,0cyclictest11808-21mandb07:31:391
1946991810,3cyclictest0-21swapper/111:03:581
1946991810,3cyclictest0-21swapper/109:26:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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