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2026-09-23 - 05:53
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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 376 highest latencies:
System rackeslot2.osadl.org (updated Wed Sep 23, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190333021060,2sleep20-21swapper/220:54:152
18112252960,1sleep0191rcu_preempt19:44:190
22952902690,3sleep02295294-21latency_hist00:35:020
22044012320,2sleep20-21swapper/223:45:212
2213291250,8phc2sys0-21swapper/320:38:553
176121599242,9cyclictest0-21swapper/123:18:541
1761214992215,6cyclictest798-21mta-sts-daemon23:10:010
1761215992114,6cyclictest24615-21JS14:54:061
176121599207,2cyclictest191rcu_preempt21:20:011
176121599203,9cyclictest36-21ksoftirqd/121:49:161
1761215992015,1cyclictest191rcu_preempt00:38:551
176121599200,3cyclictest2285017-21ssh00:32:051
1761214992014,5cyclictest2152898-21/usr/sbin/munin23:19:200
1761214992014,5cyclictest1761212-21cyclictest00:04:040
1761214992011,6cyclictest2200967-21kthreadcore23:44:190
2213291191,6phc2sys0-21swapper/322:38:533
1761216991916,1cyclictest0-21swapper/200:01:592
176121599195,4cyclictest191rcu_preempt21:33:551
1761215991916,2cyclictest341rcuc/119:10:011
1761215991914,1cyclictest191rcu_preempt19:20:281
1761215991910,5cyclictest351ktimers/122:57:551
1761214991916,2cyclictest797-21polkitd19:25:030
176121499191,16cyclictest2031259-21grep22:09:220
2447398180,3rtkit-daemon24648-21gmain20:39:071
2213291180,2phc2sys0-21swapper/321:47:303
21873222180,2sleep20-21swapper/223:36:432
20092492180,2sleep20-21swapper/221:55:042
1761216991815,1cyclictest0-21swapper/200:32:472
176121699181,10cyclictest0-21swapper/223:53:552
176121599188,1cyclictest491rcuog/222:44:131
176121599186,5cyclictest2239237-21kworker/u16:1-nfsiod00:05:061
1761215991812,3cyclictest2008911-21921:55:011
176121599180,9cyclictest2170709-21ssh23:28:531
1761214991811,4cyclictest1188-21runrttasks22:30:260
1761214991810,5cyclictest2171304-21cstates23:29:100
1761214991810,4cyclictest2046578-21ssh22:18:590
176121499180,5cyclictest1940191-21/usr/sbin/munin21:19:170
2213291170,2phc2sys0-21swapper/300:15:303
176121699179,4cyclictest0-21swapper/222:28:562
176121699175,6cyclictest0-21swapper/219:33:572
176121699171,9cyclictest0-21swapper/222:53:572
1761216991715,1cyclictest0-21swapper/221:55:012
1761216991714,1cyclictest0-21swapper/223:05:012
1761216991714,1cyclictest0-21swapper/221:25:012
1761216991714,1cyclictest0-21swapper/219:40:022
1761216991714,1cyclictest0-21swapper/219:40:022
1761216991712,3cyclictest0-21swapper/222:34:122
176121599179,5cyclictest1592604-21kworker/u16:3-events_power_efficient19:54:491
176121599178,4cyclictest1777260-21grep19:19:241
176121599175,2cyclictest191rcu_preempt00:29:101
176121599174,2cyclictest191rcu_preempt23:55:011
176121599173,6cyclictest36-21ksoftirqd/122:25:031
176121599173,4cyclictest191rcu_preempt21:23:561
176121599171,6cyclictest2035508-21kworker/1:0-events22:34:001
1761215991713,3cyclictest1915675-21munin-plugin-st21:00:031
1761215991711,2cyclictest191rcu_preempt19:34:181
176121599171,11cyclictest1870759-21kthreadcore20:29:191
1761215991710,3cyclictest2184035-21kthreadcore23:34:181
176121599170,8cyclictest2014611-21tr21:59:201
176121499176,6cyclictest0-21swapper/021:54:080
1761214991714,2cyclictest778-21dbus-daemon22:55:010
1761214991713,2cyclictest1188-21runrttasks23:10:060
1761214991712,4cyclictest1974496-21kworker/u16:0+nfsiod21:59:330
2213291161,6phc2sys0-21swapper/320:33:533
2213291160,2phc2sys0-21swapper/323:59:003
2213291160,2phc2sys0-21swapper/323:53:493
2213291160,2phc2sys0-21swapper/323:18:253
2213291160,2phc2sys0-21swapper/321:27:523
2213291160,2phc2sys0-21swapper/319:59:153
1761216991613,1cyclictest0-21swapper/223:14:142
1761216991613,1cyclictest0-21swapper/222:09:282
1761216991613,1cyclictest0-21swapper/220:25:012
176121599169,3cyclictest1685037-21kworker/1:0+events_freezable20:04:371
176121599168,3cyclictest1788220-21kthreadcore19:29:171
176121599167,2cyclictest191rcu_preempt23:23:551
176121599166,5cyclictest351ktimers/120:10:021
176121599166,2cyclictest191rcu_preempt20:19:191
176121599164,8cyclictest1867445-21kworker/u16:0+xprtiod21:13:251
176121599164,7cyclictest2133992-21kworker/u16:0+nfsiod23:43:061
176121599164,5cyclictest2136072-21gltestperf23:09:191
176121599164,5cyclictest2065086-21tail22:29:151
176121599164,3cyclictest0-21swapper/123:37:291
176121599163,8cyclictest1804246-21grep19:39:201
176121599163,8cyclictest1804246-21grep19:39:201
176121599162,8cyclictest2020632-21tune2fs22:04:131
176121599162,4cyclictest0-21swapper/123:58:561
1761215991613,2cyclictest932-1atopacctd23:04:231
1761215991613,2cyclictest24610-21gmain22:13:091
1761215991612,3cyclictest2260286-21tail00:19:141
1761215991612,3cyclictest1908320-21unixbench-2d20:54:231
1761215991612,1cyclictest82050irq/121-eno100:03:351
1761215991611,1cyclictest1685037-21kworker/1:0+events_freezable19:59:211
1761215991610,2cyclictest191rcu_preempt22:09:241
1761215991610,2cyclictest191rcu_preempt19:14:191
1761215991610,1cyclictest2133992-21kworker/u16:0+xprtiod23:45:391
176121599160,8cyclictest2113858-21tr22:54:211
176121499169,5cyclictest1761212-21cyclictest21:30:030
176121499169,3cyclictest2217329-21ssh23:54:170
176121499168,7cyclictest24616-21JS14:54:060
176121499168,7cyclictest0-21swapper/022:50:000
176121499168,5cyclictest2192517-21kthreadcore23:39:170
176121499167,5cyclictest0-21swapper/022:57:580
176121499163,4cyclictest17850irq/132-ahci[0000:00:17.0]20:35:000
1761214991613,2cyclictest2064351-21aten2.4-expect22:29:000
1761214991613,2cyclictest1949893-21gltestperf21:24:150
1761214991613,2cyclictest1-21systemd19:50:020
2213291151,4phc2sys0-21swapper/320:58:553
2213291150,2phc2sys0-21swapper/323:36:003
2213291150,2phc2sys0-21swapper/320:13:293
2213291150,1phc2sys0-21swapper/322:54:323
176121699152,8cyclictest0-21swapper/223:58:552
176121699151,7cyclictest0-21swapper/219:48:562
1761216991512,1cyclictest0-21swapper/222:39:032
1761216991512,1cyclictest0-21swapper/221:48:592
1761216991512,1cyclictest0-21swapper/221:17:002
1761216991512,1cyclictest0-21swapper/220:40:022
1761216991512,1cyclictest0-21swapper/220:04:212
1761216991512,1cyclictest0-21swapper/219:59:172
1761216991512,1cyclictest0-21swapper/219:15:012
1761216991511,2cyclictest0-21swapper/223:19:192
1761216991511,2cyclictest0-21swapper/221:10:092
1761216991511,2cyclictest0-21swapper/200:09:082
176121599155,4cyclictest2045809-21sshd-auth22:17:211
176121599155,2cyclictest191rcu_preempt20:24:161
176121599154,6cyclictest1938094-21kworker/u16:2+xprtiod21:43:011
176121599154,3cyclictest1947671-21kworker/u16:3-rpciod21:25:281
176121599153,5cyclictest36-21ksoftirqd/120:49:171
176121599153,5cyclictest2267696-21sh00:22:481
176121599152,4cyclictest1974496-21kworker/u16:0+xprtiod21:36:551
1761215991511,3cyclictest24615-21JS14:54:061
1761215991511,3cyclictest2249340-21kworker/u16:3+nfsiod00:11:481
1761215991511,3cyclictest1852570-21phc2sys20:14:211
1761215991511,1cyclictest1901651-21kworker/1:1+events_freezable21:08:591
1761215991510,1cyclictest191rcu_preempt20:43:581
1761215991510,1cyclictest1685037-21kworker/1:0+events_freezable19:41:241
176121499156,5cyclictest1935709-21kthreadcore21:14:200
176121499155,4cyclictest1902189-21sshd-session20:53:220
1761214991512,2cyclictest2304125-21/usr/sbin/munin00:40:020
1761214991512,2cyclictest1838746-21needreboot20:04:200
1761214991512,2cyclictest1770477-21fschecks_time19:15:040
1761214991512,2cyclictest1761212-21cyclictest00:19:050
1761214991511,3cyclictest2133992-21kworker/u16:0+nfsiod23:59:320
1761214991511,3cyclictest2017856-21kworker/u16:3+nfsiod22:22:400
1761214991511,3cyclictest1974496-21kworker/u16:0+nfsiod21:43:290
1761214991511,3cyclictest1871766-21kthreadcore20:29:190
1761214991511,3cyclictest1823901-21kthreadcore19:54:190
1761214991511,3cyclictest1765037-21kthreadcore19:14:170
2213291144,3phc2sys0-21swapper/300:34:233
2213291144,2phc2sys0-21swapper/323:21:143
2213291142,2phc2sys0-21swapper/322:25:303
2213291140,4phc2sys0-21swapper/322:15:073
2213291140,2phc2sys0-21swapper/323:11:243
2213291140,2phc2sys0-21swapper/321:14:463
2213291140,2phc2sys0-21swapper/300:26:363
2213291140,1phc2sys0-21swapper/323:32:283
1761216991412,1cyclictest0-21swapper/222:59:182
1761216991412,1cyclictest0-21swapper/220:30:022
176121699141,1cyclictest0-21swapper/200:28:542
1761216991411,1cyclictest0-21swapper/223:44:192
1761216991411,1cyclictest0-21swapper/223:34:232
1761216991411,1cyclictest0-21swapper/223:26:542
1761216991411,1cyclictest0-21swapper/223:09:232
1761216991411,1cyclictest0-21swapper/222:44:132
1761216991411,1cyclictest0-21swapper/222:24:092
1761216991411,1cyclictest0-21swapper/222:14:232
1761216991411,1cyclictest0-21swapper/222:04:142
1761216991411,1cyclictest0-21swapper/221:28:562
1761216991411,1cyclictest0-21swapper/220:56:222
1761216991411,1cyclictest0-21swapper/220:49:172
1761216991411,1cyclictest0-21swapper/220:44:212
1761216991411,1cyclictest0-21swapper/219:29:152
1761216991411,1cyclictest0-21swapper/219:22:092
1761216991411,1cyclictest0-21swapper/200:35:392
1761216991411,1cyclictest0-21swapper/200:19:142
1761216991410,2cyclictest0-21swapper/220:11:172
176121599145,3cyclictest2098110-21ssh22:45:311
176121599142,5cyclictest0-21swapper/120:34:141
1761215991410,3cyclictest2133992-21kworker/u16:0+nfsiod23:10:071
1761215991410,3cyclictest1917928-21kthreadcore21:04:191
176121499147,6cyclictest24617-21JS14:54:060
176121499147,6cyclictest0-21swapper/023:47:210
176121499147,2cyclictest0-21swapper/023:20:280
176121499147,2cyclictest0-21swapper/000:20:110
176121499146,2cyclictest0-21swapper/022:39:140
176121499144,9cyclictest1995642-21kthreadcore21:49:170
176121499144,4cyclictest1853809-21sshd-session20:18:220
1761214991411,2cyclictest24472-21rtkit-daemon21:06:150
1761214991411,2cyclictest2182729-21kthreadcore23:34:190
1761214991411,2cyclictest2130614-21kthreadcore23:04:190
1761214991411,2cyclictest2095586-21kthreadcore22:44:190
1761214991411,2cyclictest2021223-21irqrtprio22:04:160
1761214991411,2cyclictest1898396-21kthreadcore20:49:190
1761214991411,2cyclictest1893236-21kthreadcore20:44:210
1761214991411,2cyclictest1862084-21irqrtprio20:24:160
1761214991411,2cyclictest1851653-21kthreadcore20:14:190
1761214991411,2cyclictest1801737-21kthreadcore19:39:180
1761214991411,2cyclictest1801737-21kthreadcore19:39:180
1761214991411,2cyclictest1788997-21kthreadcore19:29:180
1761214991411,2cyclictest1761212-21cyclictest19:58:540
1761214991410,3cyclictest2041401-21kthreadcore22:14:170
1761214991410,3cyclictest1911398-21kthreadcore20:59:170
1761214991410,3cyclictest1883336-21kthreadcore20:39:170
1761214991410,3cyclictest1795346-21kthreadcore19:34:190
2213291130,2phc2sys0-21swapper/323:07:393
2213291130,2phc2sys0-21swapper/321:20:273
2213291130,1phc2sys0-21swapper/319:39:273
2213291130,1phc2sys0-21swapper/319:39:273
176121699131,8cyclictest19230072sleep221:08:592
1761216991311,1cyclictest0-21swapper/221:39:162
1761216991311,1cyclictest0-21swapper/220:34:172
1761216991311,1cyclictest0-21swapper/220:19:182
1761216991311,1cyclictest0-21swapper/219:54:092
1761216991311,1cyclictest0-21swapper/200:24:182
1761216991310,1cyclictest0-21swapper/223:24:182
1761216991310,1cyclictest0-21swapper/222:48:482
1761216991310,1cyclictest0-21swapper/222:19:192
1761216991310,1cyclictest0-21swapper/221:43:402
1761216991310,1cyclictest0-21swapper/221:34:232
1761216991310,1cyclictest0-21swapper/220:09:142
1761216991310,1cyclictest0-21swapper/219:19:172
176121499139,3cyclictest1947671-21kworker/u16:3+nfsiod21:32:020
176121499134,8cyclictest1761039-21latency_hist19:10:020
176121499133,9cyclictest171ktimers/021:38:510
176121499131,7cyclictest0-21swapper/000:07:050
1761214991311,1cyclictest1843125-21kthreadcore20:09:170
1761214991310,2cyclictest1761212-21cyclictest21:04:180
2213291122,2phc2sys0-21swapper/322:31:513
2213291121,2phc2sys0-21swapper/320:03:563
2213291120,5phc2sys0-21swapper/300:23:553
2213291120,3phc2sys0-21swapper/300:08:563
2213291120,2phc2sys0-21swapper/323:41:303
2213291120,2phc2sys0-21swapper/322:00:413
2213291120,2phc2sys0-21swapper/321:04:083
2213291120,2phc2sys0-21swapper/320:24:233
2213291120,2phc2sys0-21swapper/300:02:313
2213291120,1phc2sys0-21swapper/321:58:323
176121699121,6cyclictest0-21swapper/200:13:552
2213291111,2phc2sys0-21swapper/322:49:233
2213291111,2phc2sys0-21swapper/320:18:553
2213291110,3phc2sys0-21swapper/319:18:553
2213291110,2phc2sys0-21swapper/321:33:543
2213291110,2phc2sys0-21swapper/320:51:093
2213291110,2phc2sys0-21swapper/319:27:453
2213291110,1phc2sys0-21swapper/323:45:193
2213291110,1phc2sys0-21swapper/322:23:533
2213291110,1phc2sys0-21swapper/319:22:443
2213291110,1phc2sys0-21swapper/300:13:543
18205382117,2sleep30-21swapper/319:54:173
18125362111,7sleep30-21swapper/319:48:563
176121699119,1cyclictest0-21swapper/221:02:312
176121699119,1cyclictest0-21swapper/219:42:082
2213291103,2phc2sys0-21swapper/320:41:313
2213291102,2phc2sys0-21swapper/322:11:233
2213291102,2phc2sys0-21swapper/321:51:433
2213291101,4phc2sys0-21swapper/320:28:553
2213291100,3phc2sys0-21swapper/300:35:233
2213291100,2phc2sys0-21swapper/323:27:233
2213291100,2phc2sys0-21swapper/323:02:383
2213291100,2phc2sys0-21swapper/322:05:503
2213291100,2phc2sys0-21swapper/321:35:473
2213291100,2phc2sys0-21swapper/320:49:173
2213291100,1phc2sys0-21swapper/321:17:233
221329191,4phc2sys0-21swapper/319:08:553
221329191,2phc2sys0-21swapper/322:40:533
221329190,5phc2sys1798086-21sleep19:35:013
221329190,2phc2sys0-21swapper/322:55:243
221329190,2phc2sys0-21swapper/321:41:083
221329190,2phc2sys0-21swapper/321:09:213
221329190,2phc2sys0-21swapper/320:10:013
221329190,2phc2sys0-21swapper/319:14:563
221329181,2phc2sys0-21swapper/319:40:393
17612169973,3cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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