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2026-03-23 - 19:47
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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 rackeslot2.osadl.org (updated Mon Mar 23, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18468042980,2sleep31846799-21turbostat08:30:003
20745142750,1sleep00-21swapper/010:51:280
1746904992419,2cyclictest0-21swapper/208:20:012
1746904992311,4cyclictest0-21swapper/207:50:012
1746895992320,2cyclictest2253182-21apt-key12:35:000
1746895992315,4cyclictest1947332-21sendmail09:40:000
1746904992215,4cyclictest0-21swapper/207:41:212
1746899992215,3cyclictest2017361-21munin-run10:20:001
1746899992215,3cyclictest2017361-21munin-run10:20:001
1746895992219,2cyclictest1798513-21systemd07:50:010
1746895992215,6cyclictest257-21systemd-journal11:10:010
1746895992215,6cyclictest2031230-21kthreadcore10:26:310
1746895992211,7cyclictest2000999-21/usr/sbin/munin10:11:240
1746904992110,3cyclictest0-21swapper/212:12:562
1746899992118,2cyclictest1327-21in:imuxsock10:30:011
1746899992118,2cyclictest1194412-1atop09:10:011
1746899992114,3cyclictest2131160-21sort11:25:021
2649091200,2phc2sys0-21swapper/312:22:023
174690499201,8cyclictest0-21swapper/210:30:012
1746895992017,2cyclictest1858994-21sh08:40:010
1746895992013,4cyclictest2045645-21grep10:36:300
174690499192,7cyclictest0-21swapper/212:10:012
1746904991916,1cyclictest0-21swapper/211:06:132
1746904991916,1cyclictest0-21swapper/210:16:322
1746904991916,1cyclictest0-21swapper/210:16:322
1746904991916,1cyclictest0-21swapper/209:10:002
1746899991916,2cyclictest1965364-21sh09:50:021
1746899991916,2cyclictest1912596-21latency_hist09:20:001
1746899991916,2cyclictest1-21systemd11:15:001
1746899991915,3cyclictest1327-21in:imuxsock11:30:011
174689599199,5cyclictest0-21swapper/010:16:300
174689599199,5cyclictest0-21swapper/010:16:300
1746895991913,5cyclictest2123270-21/usr/sbin/munin11:21:270
1746895991911,7cyclictest0-21swapper/009:26:290
2649091180,3phc2sys0-21swapper/310:50:043
1746904991815,1cyclictest0-21swapper/212:35:012
1746904991815,1cyclictest0-21swapper/211:14:312
1746904991814,2cyclictest0-21swapper/211:31:232
1746904991811,1cyclictest0-21swapper/208:26:282
174689999188,2cyclictest134050irq/121-eno111:36:231
1746899991815,2cyclictest28938-21cron12:30:001
1746899991815,2cyclictest0-21swapper/107:45:011
1746899991811,3cyclictest1746891-21cyclictest12:24:401
1746895991815,2cyclictest2242138-21awk12:26:330
1746895991815,2cyclictest1761863-21apt-key07:20:000
1746895991812,5cyclictest29026-21sendmail-mta10:42:380
2649091170,1phc2sys0-21swapper/310:26:083
1746904991714,1cyclictest0-21swapper/212:20:012
1746904991714,1cyclictest0-21swapper/211:27:292
1746904991714,1cyclictest0-21swapper/211:16:322
1746904991714,1cyclictest0-21swapper/210:39:022
1746904991714,1cyclictest0-21swapper/210:06:212
1746904991714,1cyclictest0-21swapper/209:57:142
1746904991714,1cyclictest0-21swapper/209:41:342
174689999179,3cyclictest0-21swapper/110:10:021
1746899991715,1cyclictest1761978-21latency_hist07:20:011
1746899991714,2cyclictest2165919-21munin-run11:45:001
1746899991714,2cyclictest1840810-21munin-plugin-st08:25:001
1746899991711,2cyclictest134050irq/121-eno110:05:011
174689599179,4cyclictest2179851-21kthreadcore11:51:310
174689599179,4cyclictest0-21swapper/012:10:020
174689599177,5cyclictest0-21swapper/010:00:010
1746895991715,1cyclictest0-21swapper/012:40:020
1746895991714,2cyclictest2087142-21latency_hist11:00:000
1746895991714,2cyclictest1753561-21kthreadcore07:15:020
1746895991714,2cyclictest1746981-21apt-get07:10:010
1746895991711,5cyclictest2108224-21kthreadcore11:11:280
1746895991711,5cyclictest1962479-21switchtime09:46:340
2902298160,2rtkit-daemon0-21swapper/112:07:141
2649091163,2phc2sys0-21swapper/312:26:313
2649091160,2phc2sys0-21swapper/312:30:553
2649091160,2phc2sys0-21swapper/311:26:333
174690499161,5cyclictest0-21swapper/212:30:012
1746904991614,1cyclictest0-21swapper/212:00:012
1746904991614,1cyclictest0-21swapper/211:05:002
1746904991614,1cyclictest0-21swapper/211:05:002
1746904991614,1cyclictest0-21swapper/208:50:002
1746904991613,1cyclictest0-21swapper/212:21:262
1746904991613,1cyclictest0-21swapper/211:50:002
1746904991613,1cyclictest0-21swapper/211:50:002
1746904991613,1cyclictest0-21swapper/211:40:012
1746904991613,1cyclictest0-21swapper/210:46:242
1746904991613,1cyclictest0-21swapper/209:49:082
1746904991613,1cyclictest0-21swapper/209:36:292
1746904991613,1cyclictest0-21swapper/208:55:002
1746904991613,1cyclictest0-21swapper/207:23:032
1746904991613,1cyclictest0-21swapper/207:15:002
1746904991612,2cyclictest0-21swapper/208:21:212
1746904991612,2cyclictest0-21swapper/208:11:242
1746904991612,1cyclictest0-21swapper/210:12:272
174690499160,14cyclictest0-21swapper/211:42:182
174689999168,3cyclictest0-21swapper/110:00:011
1746899991613,2cyclictest2253407-21sh12:35:001
1746899991613,2cyclictest2062721-21sh10:46:221
1746899991613,2cyclictest2052336-21apt-key10:40:011
1746899991613,2cyclictest1949112-21fschecks_time09:41:241
1746899991613,2cyclictest1753241-21apt-key07:15:001
1746899991613,2cyclictest1288-1atopacctd09:11:271
1746899991612,2cyclictest0-21swapper/109:00:011
1746899991612,2cyclictest0-21swapper/107:10:021
1746899991611,2cyclictest134050irq/121-eno111:01:271
1746899991611,2cyclictest134050irq/121-eno111:01:271
174689999160,5cyclictest1923931-21cut09:26:281
174689599169,4cyclictest2088435-21tail11:01:220
174689599169,4cyclictest2088435-21tail11:01:220
174689599169,2cyclictest0-21swapper/010:21:290
174689599169,2cyclictest0-21swapper/009:41:270
174689599168,7cyclictest0-21swapper/012:11:200
174689599168,4cyclictest1746891-21cyclictest09:31:220
174689599167,2cyclictest0-21swapper/011:26:230
174689599165,6cyclictest0-21swapper/009:20:010
1746895991613,2cyclictest2036992-21sed10:31:260
1746895991613,2cyclictest1296-21polkitd12:05:010
1746895991613,2cyclictest1288-1atopacctd11:36:250
1746895991612,3cyclictest1897156-21gltestperf09:11:250
174689599160,2cyclictest0-21swapper/010:06:080
2649091150,3phc2sys0-21swapper/311:20:383
2649091150,2phc2sys0-21swapper/309:49:033
2649091150,2phc2sys0-21swapper/309:36:313
2649091150,2phc2sys0-21swapper/309:16:453
2649091150,2phc2sys0-21swapper/309:01:263
21479392157,4sleep016-21ksoftirqd/011:34:060
174690499151,5cyclictest0-21swapper/212:40:012
1746904991513,1cyclictest0-21swapper/212:05:022
1746904991512,1cyclictest0-21swapper/211:51:262
1746904991512,1cyclictest0-21swapper/210:54:592
1746904991512,1cyclictest0-21swapper/209:31:292
1746904991512,1cyclictest0-21swapper/209:16:302
1746904991512,1cyclictest0-21swapper/208:35:002
174689999159,2cyclictest2004502-21kthreadcore10:11:291
174689999159,2cyclictest134050irq/121-eno112:05:021
174689999158,2cyclictest0-21swapper/111:51:251
174689999152,2cyclictest491rcuog/212:11:271
1746899991513,1cyclictest1288-1atopacctd12:17:171
1746899991513,1cyclictest0-21swapper/109:25:011
1746899991512,2cyclictest2255156-21cut12:36:251
1746899991512,2cyclictest2101756-21needreboot11:06:311
1746899991512,2cyclictest1865635-21cpuspeed_turbos08:46:231
1746899991512,2cyclictest1864585-21unixbench_multi08:41:341
1746899991512,2cyclictest1810681-21munin-plugin-st08:00:011
1746899991512,2cyclictest1288-1atopacctd10:55:321
1746899991511,3cyclictest2164115-21kworker/u16:3+nfsiod11:59:451
1746899991511,3cyclictest2078637-21kworker/u16:3+nfsiod11:18:521
1746899991511,3cyclictest2021299-21kthreadcore10:21:301
1746899991511,3cyclictest1883347-21kworker/u16:3+nfsiod09:50:441
1746899991511,3cyclictest1798570-21kworker/u16:2+nfsiod10:32:411
174689599157,4cyclictest0-21swapper/010:46:260
1746895991512,2cyclictest2185609-21kernelversion11:56:260
1746895991512,2cyclictest1974047-21sh09:55:020
1746895991512,2cyclictest1848103-21sort08:31:270
1746895991512,2cyclictest1840832-21latency_hist08:25:010
174689599150,5cyclictest2219417-21acpi12:16:210
2649091141,4phc2sys0-21swapper/310:16:223
2649091141,4phc2sys0-21swapper/310:16:223
2649091141,4phc2sys0-21swapper/309:51:213
2649091141,2phc2sys0-21swapper/312:39:053
2649091140,3phc2sys0-21swapper/310:37:333
1746904991412,1cyclictest0-21swapper/210:01:482
1746904991412,1cyclictest0-21swapper/209:10:032
1746904991412,1cyclictest0-21swapper/208:56:322
1746904991411,2cyclictest0-21swapper/207:10:012
1746904991411,1cyclictest0-21swapper/211:21:252
1746904991411,1cyclictest0-21swapper/210:56:252
1746904991411,1cyclictest0-21swapper/210:30:062
1746904991411,1cyclictest0-21swapper/207:31:262
174690499140,5cyclictest0-21swapper/207:20:012
1746899991412,1cyclictest1746891-21cyclictest08:10:011
1746899991411,2cyclictest2071202-21cstates10:51:231
1746899991411,2cyclictest1834703-21cron08:20:001
1746899991411,2cyclictest1812273-21kthreadcore08:01:301
1746899991411,2cyclictest1799203-21cstates07:51:231
1746899991410,3cyclictest2104577-21kworker/u16:1+nfsiod11:34:281
1746899991410,3cyclictest2054776-21irqrtprio10:41:271
1746899991410,3cyclictest1913588-21kworker/u16:0+nfsiod09:39:051
1746899991410,3cyclictest1877102-21true08:55:001
1746899991410,3cyclictest1769596-21kthreadcore07:26:291
1746899991410,3cyclictest1765024-21kthreadcore07:21:271
174689599147,2cyclictest1769562-21irqstats07:26:280
174689599146,2cyclictest0-21swapper/011:40:210
174689599145,7cyclictest1831883-21tr08:16:280
174689599144,5cyclictest0-21swapper/010:01:300
174689599141,8cyclictest1780230-1cat07:35:010
1746895991412,1cyclictest0-21swapper/008:50:010
1746895991411,2cyclictest257-21systemd-journal09:09:330
1746895991411,2cyclictest1882280-21proc_pri08:56:330
1746895991411,2cyclictest1805561-21gltestperf07:56:250
1746895991411,2cyclictest1288-1atopacctd08:11:300
1746895991410,3cyclictest2164115-21kworker/u16:3+nfsiod11:45:470
1746895991410,3cyclictest2164115-21kworker/u16:3+nfsiod11:45:470
2649091134,2phc2sys0-21swapper/311:58:223
2649091133,2phc2sys0-21swapper/309:12:253
2649091130,3phc2sys0-21swapper/308:51:223
2649091130,2phc2sys0-21swapper/311:32:293
2649091130,2phc2sys0-21swapper/308:56:353
2649091130,1phc2sys0-21swapper/311:43:243
2649091130,1phc2sys0-21swapper/307:49:393
174690499139,2cyclictest0-21swapper/209:50:172
1746904991311,1cyclictest0-21swapper/210:20:522
1746904991311,1cyclictest0-21swapper/209:20:222
1746904991311,1cyclictest0-21swapper/208:05:002
1746904991311,1cyclictest0-21swapper/208:00:012
1746904991311,1cyclictest0-21swapper/207:50:242
1746904991310,1cyclictest0-21swapper/209:26:232
1746904991310,1cyclictest0-21swapper/209:01:222
1746904991310,1cyclictest0-21swapper/208:36:322
1746904991310,1cyclictest0-21swapper/208:06:302
1746904991310,1cyclictest0-21swapper/207:26:252
174690499130,6cyclictest0-21swapper/210:41:212
174689999131,3cyclictest1851706-21kthreadcore08:31:301
1746899991310,2cyclictest2168849-21kthreadcore11:46:291
1746899991310,2cyclictest2168849-21kthreadcore11:46:291
1746899991310,2cyclictest1933582-21kthreadcore09:31:281
1746899991310,2cyclictest1857432-21kthreadcore08:36:301
1746899991310,2cyclictest1845972-21pmu-power08:26:311
1746899991310,2cyclictest1781027-21fschecks_time07:36:261
1746899991310,2cyclictest1778649-21kthreadcore07:31:301
174689599134,4cyclictest1841180-21/usr/sbin/munin08:26:270
174689599131,7cyclictest2115453-21cat11:16:250
1746895991311,1cyclictest1860623-21kthreadcore08:41:280
1746895991310,2cyclictest2228108-21acpi12:21:190
1746895991310,2cyclictest1917628-21kthreadcore09:21:290
1746895991310,2cyclictest1885296-21kthreadcore09:01:280
1746895991310,2cyclictest1871378-21/usr/sbin/munin08:51:300
1746895991310,2cyclictest1817754-21head08:06:260
1746895991310,2cyclictest1811599-21fschecks_time08:01:260
1746895991310,2cyclictest1787796-21kthreadcore07:41:280
1746895991310,2cyclictest1763502-21irqrtprio07:21:260
1746895991310,2cyclictest1329-21rs:main0
2649091123,2phc2sys0-21swapper/309:22:113
2649091120,2phc2sys0-21swapper/311:11:523
2649091120,2phc2sys0-21swapper/311:09:203
2649091120,2phc2sys0-21swapper/308:01:533
2649091120,2phc2sys0-21swapper/307:20:013
2649091120,1phc2sys0-21swapper/312:19:343
2649091120,1phc2sys0-21swapper/310:10:253
1746904991210,1cyclictest0-21swapper/207:36:272
174689999129,2cyclictest1825799-21kthreadcore08:11:271
174689999129,2cyclictest1797893-21timerandwakeup07:46:341
174689999123,3cyclictest1884288-21cat09:01:261
174689599129,2cyclictest1798980-21aten_repower_vo07:51:220
2649091115,3phc2sys0-21swapper/308:16:283
2649091111,2phc2sys0-21swapper/311:02:073
2649091111,2phc2sys0-21swapper/311:02:073
2649091110,4phc2sys0-21swapper/311:36:213
2649091110,2phc2sys0-21swapper/312:10:563
2649091110,2phc2sys0-21swapper/310:03:283
2649091110,2phc2sys0-21swapper/309:41:473
2649091110,2phc2sys0-21swapper/307:57:483
2649091110,1phc2sys0-21swapper/308:44:043
2649091110,1phc2sys0-21swapper/308:22:003
2649091110,1phc2sys0-21swapper/307:40:333
174690499119,1cyclictest0-21swapper/208:41:292
2649091102,3phc2sys0-21swapper/311:00:003
2649091101,4phc2sys0-21swapper/307:21:203
2649091101,2phc2sys0-21swapper/311:48:363
2649091101,2phc2sys0-21swapper/311:48:363
2649091101,2phc2sys0-21swapper/309:30:093
2649091101,2phc2sys0-21swapper/309:06:243
2649091101,2phc2sys0-21swapper/307:25:023
2649091101,2phc2sys0-21swapper/307:06:353
2649091100,2phc2sys0-21swapper/312:06:193
2649091100,2phc2sys0-21swapper/312:00:103
2649091100,2phc2sys0-21swapper/311:54:413
2649091100,2phc2sys0-21swapper/310:42:113
2649091100,2phc2sys0-21swapper/310:30:293
2649091100,2phc2sys0-21swapper/310:21:313
2649091100,2phc2sys0-21swapper/310:08:333
2649091100,2phc2sys0-21swapper/309:57:343
2649091100,2phc2sys0-21swapper/309:25:123
2649091100,2phc2sys0-21swapper/308:31:303
2649091100,2phc2sys0-21swapper/308:06:223
2649091100,1phc2sys0-21swapper/310:47:083
2649091100,1phc2sys0-21swapper/308:47:523
264909190,3phc2sys0-21swapper/307:36:233
264909190,3phc2sys0-21swapper/307:31:223
264909190,2phc2sys0-21swapper/311:15:343
264909190,2phc2sys0-21swapper/308:11:593
264909190,2phc2sys0-21swapper/307:51:233
264909190,2phc2sys0-21swapper/307:11:283
264909180,3phc2sys0-21swapper/308:36:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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