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2026-03-27 - 12:56
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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 rackeslot2.osadl.org (updated Fri Mar 27, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3523382860,2sleep30-21swapper/320:36:253
242672992313,5cyclictest616261-21/usr/sbin/munin23:41:240
242679992220,1cyclictest0-21swapper/223:26:292
242672992213,5cyclictest494404-21cron22:30:000
2902298210,3rtkit-daemon4114978-21snmpd21:22:361
242674992116,4cyclictest257-21systemd-journal19:14:501
242672992111,5cyclictest0-21swapper/021:10:010
242674992017,2cyclictest597838-21cron23:30:001
242674992017,2cyclictest1286-21avahi-daemon23:20:021
242672992017,2cyclictest1326-21systemd-logind20:20:010
242672992014,5cyclictest668505-21if_enp1s000:11:200
242672992011,5cyclictest666526-21runrttasks00:09:510
242672992010,5cyclictest0-21swapper/023:11:170
242679991916,1cyclictest0-21swapper/222:35:002
242679991916,1cyclictest0-21swapper/222:00:012
242679991916,1cyclictest0-21swapper/221:40:012
24267299199,5cyclictest0-21swapper/022:05:000
24267299198,6cyclictest0-21swapper/023:56:280
242672991916,2cyclictest546421-21turbostat.cron23:00:000
242672991913,5cyclictest705693-21kthreadcore00:31:250
242672991913,5cyclictest506626-21kthreadcore22:36:240
242672991911,5cyclictest547505-21aten_repower_cu23:01:170
2649091181,2phc2sys0-21swapper/323:17:453
2649091180,2phc2sys0-21swapper/322:27:063
2649091180,2phc2sys0-21swapper/300:07:593
242679991816,1cyclictest0-21swapper/223:20:012
242679991816,1cyclictest0-21swapper/220:45:002
242679991815,1cyclictest0-21swapper/222:20:002
242679991815,1cyclictest0-21swapper/220:30:002
242679991815,1cyclictest0-21swapper/200:40:002
242679991814,2cyclictest0-21swapper/220:05:012
242674991815,2cyclictest0-21swapper/123:40:001
242674991815,2cyclictest0-21swapper/119:30:021
242674991812,5cyclictest385377-21fschecks_count21:06:181
24267299189,7cyclictest0-21swapper/023:21:230
242672991815,2cyclictest242663-21cyclictest21:11:220
242672991815,2cyclictest1290-21dbus-daemon00:05:010
242672991812,5cyclictest1996-21runrttasks23:32:360
4948272170,2sleep20-21swapper/222:30:012
2649091170,2phc2sys0-21swapper/323:23:433
2649091170,2phc2sys0-21swapper/321:20:583
24267999175,7cyclictest0-21swapper/220:20:012
242679991715,1cyclictest0-21swapper/219:30:012
242679991715,1cyclictest0-21swapper/219:15:022
242679991715,1cyclictest0-21swapper/200:20:012
242679991714,1cyclictest0-21swapper/221:05:002
242679991714,1cyclictest0-21swapper/219:55:002
242679991714,1cyclictest0-21swapper/219:15:012
24267499177,4cyclictest0-21swapper/122:20:341
242674991714,2cyclictest649470-21cron00:00:001
242674991714,2cyclictest520781-21grep22:45:001
242674991714,2cyclictest503331-21latency_hist22:35:021
242674991714,2cyclictest0-21swapper/122:40:011
242674991713,3cyclictest363413-21kthreadcore20:46:251
242674991710,3cyclictest617649-21kthreadcore23:41:231
24267299179,2cyclictest0-21swapper/023:16:240
24267299177,5cyclictest0-21swapper/022:46:180
242672991715,1cyclictest503785-21latency_hist22:35:020
242672991715,1cyclictest384368-21cron21:05:000
242672991714,2cyclictest712201-21grep00:36:200
242672991714,2cyclictest690087-21head00:21:270
242672991714,2cyclictest407349-21systemd-run21:20:010
242672991714,2cyclictest407349-21systemd-run21:20:010
242672991714,2cyclictest29021-21rtkit-daemon22:50:250
242672991710,2cyclictest0-21swapper/021:31:250
2902298160,2rtkit-daemon473061-21ssh22:13:081
2649091163,2phc2sys0-21swapper/323:10:023
2649091161,4phc2sys0-21swapper/322:43:273
2649091160,2phc2sys0-21swapper/323:03:393
242679991614,1cyclictest0-21swapper/220:10:012
242679991613,1cyclictest0-21swapper/222:56:252
242679991613,1cyclictest0-21swapper/222:46:202
24267999161,12cyclictest0-21swapper/219:10:012
24267499169,3cyclictest0-21swapper/121:11:291
24267499169,2cyclictest0-21swapper/122:55:011
242674991614,1cyclictest719008-21perf00:40:011
242674991613,2cyclictest704212-21kthreadcore00:31:251
242674991613,2cyclictest679469-21kthreadcore00:16:241
242674991613,2cyclictest0-21swapper/120:00:001
242674991612,3cyclictest494462-21kworker/u16:2+nfsiod23:50:531
242674991612,3cyclictest335821-21latency_hist20:25:011
242674991612,3cyclictest335821-21latency_hist20:25:011
24267299168,7cyclictest437495-21tr21:36:250
242672991614,1cyclictest485930-21latency_hist22:25:010
242672991613,2cyclictest694045-21apt-get00:26:170
242672991613,2cyclictest559692-21kthreadcore23:06:240
242672991613,2cyclictest474312-21diskmemload22:15:010
242672991613,2cyclictest299790-21systemd-run19:55:010
242672991613,2cyclictest269602-21cut19:30:020
242672991613,2cyclictest249339-21kthreadcore19:15:010
242672991611,3cyclictest257-21systemd-journal19:50:000
24267299160,7cyclictest335839-21dpkg20:25:010
24267299160,7cyclictest335839-21dpkg20:25:010
2649091151,4phc2sys0-21swapper/300:39:013
2649091150,5phc2sys0-21swapper/320:51:203
2649091150,1phc2sys0-21swapper/321:56:263
242679991513,1cyclictest0-21swapper/223:05:002
242679991513,1cyclictest0-21swapper/200:28:362
242679991512,1cyclictest0-21swapper/223:51:172
242679991512,1cyclictest0-21swapper/223:41:282
242679991512,1cyclictest0-21swapper/223:21:202
242679991512,1cyclictest0-21swapper/221:45:112
242679991512,1cyclictest0-21swapper/220:40:002
242679991511,2cyclictest0-21swapper/221:53:372
242679991511,2cyclictest0-21swapper/221:11:172
242674991513,1cyclictest29021-21rtkit-daemon21:50:091
242674991513,1cyclictest0-21swapper/122:00:011
242674991512,2cyclictest662527-21kthreadcore00:06:251
242674991512,2cyclictest539959-21irqcore22:56:231
242674991512,2cyclictest257024-21idleruntime-cro19:20:001
242674991512,2cyclictest242663-21cyclictest21:26:221
242674991512,2cyclictest0-21swapper/123:25:001
242674991512,2cyclictest0-21swapper/122:30:011
242674991511,3cyclictest615512-21kworker/u16:3+nfsiod00:20:411
242674991511,3cyclictest398703-21kworker/u16:3+nfsiod23:01:481
242674991511,3cyclictest398703-21kworker/u16:3+nfsiod22:02:191
242674991511,3cyclictest349853-21kthreadcore20:36:241
24267299156,5cyclictest0-21swapper/021:21:240
24267299156,2cyclictest0-21swapper/021:59:510
24267299153,5cyclictest443178-21irqcore21:41:210
24267299151,2cyclictest470950-21perf22:10:000
242672991512,2cyclictest629595-21latency23:46:240
242672991512,2cyclictest615350-21latency_hist23:40:000
242672991512,2cyclictest598041-21apt-config23:30:000
242672991512,2cyclictest366448-21latency_hist20:50:010
242672991512,2cyclictest305781-21latency_hist20:00:010
242672991512,2cyclictest242766-21latency_hist19:10:010
24267299151,12cyclictest311676-21apt20:05:000
4528862140,8sleep11-21systemd21:50:021
2649091140,4phc2sys0-21swapper/322:46:463
2649091140,2phc2sys0-21swapper/323:39:183
2649091140,2phc2sys0-21swapper/321:26:273
2649091140,1phc2sys0-21swapper/300:16:483
242679991411,1cyclictest0-21swapper/223:57:392
242679991411,1cyclictest0-21swapper/223:46:392
242679991411,1cyclictest0-21swapper/222:41:242
242679991411,1cyclictest0-21swapper/222:36:292
242679991411,1cyclictest0-21swapper/222:11:212
242679991411,1cyclictest0-21swapper/222:07:302
242679991411,1cyclictest0-21swapper/221:26:222
242679991411,1cyclictest0-21swapper/221:21:232
242679991411,1cyclictest0-21swapper/221:09:512
242679991411,1cyclictest0-21swapper/220:46:212
242679991411,1cyclictest0-21swapper/219:50:002
242679991411,1cyclictest0-21swapper/200:03:522
242679991410,2cyclictest0-21swapper/223:31:172
24267499144,9cyclictest431758-1sshd21:33:261
242674991411,2cyclictest695551-21kthreadcore00:26:241
242674991411,2cyclictest603559-21kthreadcore23:31:251
242674991411,2cyclictest569739-21switchtime23:11:281
242674991411,2cyclictest527152-21unixbench-2d22:46:301
242674991411,2cyclictest445755-21kthreadcore21:41:241
242674991411,2cyclictest433788-21aten_repower_fr21:36:171
242674991411,2cyclictest404670-21mailstats21:16:271
242674991411,2cyclictest404670-21mailstats21:16:271
242674991411,2cyclictest354785-21tail20:41:171
242674991411,2cyclictest299685-21latency_hist19:55:011
242674991411,2cyclictest1286-21avahi-daemon19:10:011
242674991410,3cyclictest651911-21kthreadcore00:01:261
242674991410,3cyclictest627713-21kthreadcore23:46:241
242674991410,3cyclictest373244-21sh20:56:191
242674991410,3cyclictest273784-21kthreadcore19:31:241
242674991410,3cyclictest1327-21in:imuxsock20:20:021
242674991410,3cyclictest1288-1atopacctd19:41:241
24267499140,2cyclictest477307-21basename22:20:001
24267299148,2cyclictest342085-21turbostat20:30:000
24267299147,2cyclictest323728-21latency_hist20:15:000
24267299146,2cyclictest0-21swapper/022:41:150
24267299144,6cyclictest0-21swapper/019:19:550
242672991411,2cyclictest633754-21cpuspeed_turbos23:51:180
242672991411,2cyclictest615512-21kworker/u16:3-writeback00:20:000
242672991411,2cyclictest375481-21kthreadcore20:56:250
242672991411,2cyclictest366682-21acpi20:51:150
242672991411,2cyclictest242663-21cyclictest20:06:260
242672991411,2cyclictest1288-1atopacctd21:52:120
242672991411,2cyclictest1288-1atopacctd21:47:430
242672991410,3cyclictest258854-21kthreadcore19:21:210
2649091130,5phc2sys0-21swapper/323:25:573
2649091130,3phc2sys0-21swapper/322:51:163
2649091130,2phc2sys0-21swapper/323:58:083
2649091130,2phc2sys0-21swapper/321:44:113
2649091130,1phc2sys0-21swapper/319:11:383
24267999139,2cyclictest0-21swapper/200:22:502
242679991311,1cyclictest0-21swapper/219:45:002
242679991311,1cyclictest0-21swapper/200:31:262
242679991311,1cyclictest0-21swapper/200:10:012
242679991310,2cyclictest0-21swapper/222:01:222
242679991310,1cyclictest0-21swapper/222:51:242
242679991310,1cyclictest0-21swapper/222:21:252
242679991310,1cyclictest0-21swapper/220:56:202
242679991310,1cyclictest0-21swapper/220:51:192
242679991310,1cyclictest0-21swapper/220:25:012
242679991310,1cyclictest0-21swapper/220:25:012
242679991310,1cyclictest0-21swapper/220:11:202
242679991310,1cyclictest0-21swapper/200:11:172
24267499139,3cyclictest260182-21kthreadcore19:21:221
24267499137,4cyclictest257-21systemd-journal20:50:501
24267499137,2cyclictest134050irq/121-eno120:11:171
242674991310,2cyclictest379520-21gltestperf21:01:201
242674991310,2cyclictest343567-21irqcore20:31:231
242674991310,2cyclictest288667-21gltestperf19:46:201
242674991310,2cyclictest277141-21kthreadcore19:36:241
242674991310,2cyclictest0-21swapper/123:10:011
242674991310,2cyclictest0-21swapper/120:05:011
24267299136,6cyclictest0-21swapper/022:15:120
24267299134,4cyclictest342470-21/usr/sbin/munin20:31:160
242672991310,2cyclictest355924-21kthreadcore20:41:220
242672991310,2cyclictest349709-21irqrtprio20:36:230
242672991310,2cyclictest277141-21kthreadcore19:36:240
242672991310,2cyclictest272817-21kthreadcore19:31:230
24267299130,8cyclictest418233-21kthreadcore21:26:220
2649091124,3phc2sys0-21swapper/300:05:013
2649091123,2phc2sys0-21swapper/322:19:293
2649091122,2phc2sys0-21swapper/321:31:283
2649091121,2phc2sys0-21swapper/322:59:503
2649091120,3phc2sys0-21swapper/320:20:523
2649091120,3phc2sys0-21swapper/320:20:523
2649091120,3phc2sys0-21swapper/319:06:173
2649091120,2phc2sys0-21swapper/300:24:503
2649091120,1phc2sys0-21swapper/320:05:293
24267999129,1cyclictest0-21swapper/221:31:182
24267999129,1cyclictest0-21swapper/220:31:192
24267999129,1cyclictest0-21swapper/219:56:202
24267999129,1cyclictest0-21swapper/219:36:262
24267999129,1cyclictest0-21swapper/219:31:232
242679991210,1cyclictest0-21swapper/221:41:222
24267999120,8cyclictest0-21swapper/223:40:012
24267499129,2cyclictest339872-21kthreadcore20:26:241
24267499128,3cyclictest667612-21/usr/sbin/munin00:11:171
24267499128,2cyclictest0-21swapper/120:10:011
24267499127,4cyclictest4174116-21kworker/u16:2-events_unbound22:05:341
24267299120,3cyclictest0-21swapper/019:40:100
2649091113,3phc2sys0-21swapper/323:54:523
2649091111,2phc2sys0-21swapper/322:36:263
2649091111,2phc2sys0-21swapper/322:20:143
2649091110,6phc2sys693964-21chrt00:26:133
2649091110,2phc2sys0-21swapper/323:45:593
2649091110,2phc2sys0-21swapper/323:40:433
2649091110,2phc2sys0-21swapper/323:10:163
2649091110,2phc2sys0-21swapper/319:52:133
2649091110,1phc2sys0-21swapper/320:55:383
2649091110,1phc2sys0-21swapper/320:32:103
24267999119,1cyclictest0-21swapper/223:12:052
24267999119,1cyclictest0-21swapper/221:15:052
24267999119,1cyclictest0-21swapper/221:15:052
24267999119,1cyclictest0-21swapper/219:21:182
24267999118,1cyclictest0-21swapper/223:06:232
6682132100,2sleep30-21swapper/300:11:193
2649091101,2phc2sys0-21swapper/321:54:213
2649091101,2phc2sys0-21swapper/321:36:253
2649091101,2phc2sys0-21swapper/321:11:293
2649091101,2phc2sys0-21swapper/321:05:033
2649091100,2phc2sys0-21swapper/323:35:013
2649091100,2phc2sys0-21swapper/322:30:403
2649091100,2phc2sys0-21swapper/322:14:373
2649091100,2phc2sys0-21swapper/322:05:513
2649091100,2phc2sys0-21swapper/322:01:223
2649091100,2phc2sys0-21swapper/321:46:273
2649091100,2phc2sys0-21swapper/321:18:343
2649091100,2phc2sys0-21swapper/321:18:343
2649091100,2phc2sys0-21swapper/320:50:013
2649091100,2phc2sys0-21swapper/320:11:263
2649091100,2phc2sys0-21swapper/319:56:153
2649091100,2phc2sys0-21swapper/319:16:153
2649091100,2phc2sys0-21swapper/300:30:033
264909191,3phc2sys0-21swapper/319:35:023
264909191,2phc2sys0-21swapper/320:41:233
264909191,2phc2sys0-21swapper/319:26:173
264909190,2phc2sys0-21swapper/321:01:193
264909190,2phc2sys0-21swapper/320:30:013
264909190,2phc2sys0-21swapper/319:46:293
264909190,2phc2sys0-21swapper/319:45:013
264909190,2phc2sys0-21swapper/319:36:193
264909190,2phc2sys0-21swapper/319:21:163
264909180,2phc2sys0-21swapper/320:16:193
264909180,1phc2sys0-21swapper/320:00:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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