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2026-08-04 - 00:31
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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 Mon Aug 03, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1791027057,9sleep10-21swapper/107:04:531
1818226950,8sleep00-21swapper/007:07:440
18417993232,0cyclictest0-21swapper/110:26:011
18417993110,20cyclictest0-21swapper/109:24:131
18417993028,1cyclictest0-21swapper/111:22:251
1841799302,6cyclictest25971-21munin-run07:28:151
18417993010,8cyclictest9694-21ssh09:19:061
1841799300,5cyclictest0-21swapper/110:33:341
1841799292,7cyclictest4172-21/usr/sbin/munin09:13:261
18417992917,11cyclictest18414-21cyclictest08:48:421
18417992811,16cyclictest5214-21kworker/1:010:51:371
18417992810,6cyclictest0-21swapper/111:02:241
18416992828,0cyclictest0-21swapper/011:38:160
1841699280,23cyclictest0-21swapper/009:11:360
1841799274,6cyclictest0-21swapper/107:28:271
1841799273,6cyclictest0-21swapper/111:28:321
1841799271,7cyclictest0-21swapper/109:44:201
18416992710,9cyclictest0-21swapper/011:36:150
1841799263,5cyclictest17138-21irqstats11:38:311
1841799261,7cyclictest0-21swapper/110:08:161
18417992610,5cyclictest0-21swapper/110:40:131
18416992610,1cyclictest0-21swapper/011:04:080
1841699260,5cyclictest0-21swapper/010:23:510
1841799253,5cyclictest0-21swapper/110:57:131
18417992520,4cyclictest28256-21apache209:56:541
18417992518,3cyclictest705-21ntpd07:45:321
1841799251,5cyclictest0-21swapper/108:38:351
1841799250,17cyclictest0-21swapper/109:12:461
18416992524,0cyclictest0-21swapper/011:48:100
1841699250,4cyclictest4769-21ssh11:22:310
1841799241,8cyclictest0-21swapper/109:39:001
18416992422,1cyclictest0-21swapper/010:13:310
1841699241,3cyclictest0-21swapper/011:50:480
18416992410,0cyclictest0-21swapper/009:01:080
1841799234,12cyclictest0-21swapper/111:08:311
1841799233,7cyclictest0-21swapper/109:58:351
1841799231,4cyclictest0-21swapper/111:35:521
18417992310,6cyclictest0-21swapper/112:34:501
18416992323,0cyclictest24479-21snmpd11:26:340
18416992318,3cyclictest28232-21apache209:56:360
1841699231,17cyclictest0-21swapper/012:24:520
18416992310,9cyclictest0-21swapper/012:31:380
18416992310,9cyclictest0-21swapper/011:33:110
18416992310,5cyclictest0-21swapper/011:14:180
1841799223,17cyclictest22589-21/usr/sbin/munin11:03:341
1841799222,7cyclictest0-21swapper/112:03:281
18417992218,1cyclictest705-21ntpd10:28:421
18417992217,4cyclictest28232-21apache212:17:271
18417992215,3cyclictest28256-21apache208:07:331
1841799221,4cyclictest2986-21ssh12:03:071
18417992210,4cyclictest0-21swapper/107:18:371
1841799220,3cyclictest0-21swapper/111:17:351
1841799220,12cyclictest24479-21snmpd11:46:071
1841699227,10cyclictest0-21swapper/007:28:290
18416992220,1cyclictest32321-21diskmemload09:30:490
18416992214,1cyclictest7-21ksoftirqd/007:13:310
1841699221,13cyclictest0-21swapper/011:53:200
18416992210,4cyclictest0-21swapper/007:38:170
18416992210,0cyclictest0-21swapper/009:28:090
1841699220,7cyclictest0-21swapper/009:58:350
1841699220,6cyclictest7886-21dump-pmu-power09:18:150
1841799212,5cyclictest0-21swapper/109:48:341
18417992112,5cyclictest231ktimersoftd/110:22:471
18417992110,1cyclictest0-21swapper/111:48:261
18417992110,0cyclictest0-21swapper/112:23:581
1841799210,3cyclictest0-21swapper/112:08:331
18416992111,4cyclictest636-21nscd09:48:560
173322210,0sleep10-21swapper/112:21:531
718722010,0sleep10-21swapper/111:24:381
559322010,1sleep00-21swapper/012:05:420
1841799209,8cyclictest28232-21apache210:43:221
1841799204,11cyclictest0-21swapper/109:28:271
1841799203,5cyclictest0-21swapper/107:48:301
1841799202,7cyclictest19981-21if_err_eth309:33:301
1841799202,13cyclictest0-21swapper/110:03:341
1841699208,5cyclictest636-21nscd10:52:260
1841699203,8cyclictest0-21swapper/008:03:290
18416992018,2cyclictest28256-21apache210:32:110
18416992015,4cyclictest0-21swapper/010:18:310
1841699201,14cyclictest0-21swapper/010:59:130
18416992010,8cyclictest0-21swapper/008:08:280
18416992010,5cyclictest0-21swapper/011:08:200
18416992010,5cyclictest0-21swapper/010:38:270
18416992010,3cyclictest0-21swapper/010:53:350
18416992010,1cyclictest0-21swapper/012:37:150
18416992010,10cyclictest0-21swapper/008:40:230
18416992010,0cyclictest0-21swapper/010:34:180
1841699200,1cyclictest8102-21irqstats10:43:290
2621821910,0sleep00-21swapper/009:41:590
1841799194,8cyclictest0-21swapper/108:43:341
1841799193,9cyclictest0-21swapper/108:18:311
1841799192,9cyclictest0-21swapper/107:59:491
1841799192,11cyclictest0-21swapper/110:18:101
18417991910,2cyclictest0-21swapper/112:29:021
1841699193,9cyclictest32631-21/usr/sbin/munin07:43:300
1841699193,10cyclictest0-21swapper/008:18:280
18416991915,2cyclictest0-21swapper/008:36:480
18416991910,8cyclictest0-21swapper/010:12:420
18416991910,4cyclictest0-21swapper/012:19:070
1841699190,11cyclictest20216-21/usr/sbin/munin09:33:320
3032221810,0sleep10-21swapper/111:55:511
1841799184,10cyclictest30570-21apache_processe09:03:281
18417991810,4cyclictest0-21swapper/107:38:211
1841699184,10cyclictest0-21swapper/008:28:350
1841699181,9cyclictest0-21swapper/007:58:270
1841699181,6cyclictest13387-21perf10:08:150
18416991816,1cyclictest0-21swapper/009:20:540
1841699181,16cyclictest11676-21sh08:13:290
18416991810,4cyclictest7-21ksoftirqd/008:48:360
18416991810,4cyclictest0-21swapper/007:23:350
18416991810,3cyclictest0-21swapper/012:08:320
18416991810,3cyclictest0-21swapper/007:18:310
18416991810,2cyclictest7472-21kworker/0:111:58:270
18416991810,2cyclictest0-21swapper/009:43:270
1841699180,12cyclictest0-21swapper/007:33:280
18417991712,3cyclictest231ktimersoftd/108:59:451
18417991711,4cyclictest100150irq/106-eth1-rx08:14:391
18417991710,6cyclictest0-21swapper/108:33:281
18417991710,3cyclictest0-21swapper/107:33:161
18417991710,3cyclictest0-21swapper/107:08:261
1841799170,11cyclictest28479-21munin-run08:58:151
18416991710,5cyclictest0-21swapper/007:51:090
1841799163,8cyclictest0-21swapper/108:23:271
1841799161,12cyclictest5419-21perf07:58:151
1841699168,4cyclictest0-21swapper/008:23:310
1841699163,5cyclictest0-21swapper/012:13:280
1841699162,4cyclictest28602-21latency_hist08:58:150
1841699162,11cyclictest0-21swapper/007:55:540
18416991610,6cyclictest0-21swapper/007:08:340
1841799152,8cyclictest17300-21/usr/sbin/munin08:28:281
1841799151,9cyclictest0-21swapper/108:08:261
18417991510,2cyclictest0-21swapper/107:13:201
18416991510,2cyclictest0-21swapper/008:48:070
18416991410,3cyclictest0-21swapper/009:06:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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