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2026-06-10 - 14:28
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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 Wed Jun 10, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244801721150,2sleep30-21swapper/323:10:363
211595899274,5cyclictest2401285-21cut22:40:300
2115958992421,2cyclictest1-21systemd23:05:020
2115960992320,1cyclictest0-21swapper/200:20:012
2115960992220,1cyclictest0-21swapper/221:50:012
2115960992219,1cyclictest0-21swapper/221:00:012
2115960992219,1cyclictest0-21swapper/200:00:002
2115959992218,2cyclictest0-21swapper/123:50:021
2115959992215,3cyclictest2267737-21kthreadcore21:10:291
25039462210,2sleep1341rcuc/123:50:301
2115958992119,1cyclictest2294705-21apt-config21:30:010
2115958992118,2cyclictest2265272-21/usr/sbin/munin21:10:010
2115959992013,3cyclictest0-21swapper/123:00:011
2115959992013,3cyclictest0-21swapper/121:40:011
2115958992017,2cyclictest781-21gmain00:33:400
2115958992017,2cyclictest0-21swapper/022:15:000
2115958992012,6cyclictest2555925-21kthreadcore00:25:300
2115958992012,6cyclictest0-21swapper/000:00:020
2115958992010,6cyclictest0-21swapper/023:40:230
3153791190,1phc2sys0-21swapper/323:51:053
3153791190,1phc2sys0-21swapper/321:40:353
2115960991917,1cyclictest0-21swapper/222:20:022
2115959991914,4cyclictest2397930-21sendmail22:40:011
2115959991913,2cyclictest0-21swapper/122:05:011
211595899197,6cyclictest16-21ksoftirqd/022:20:000
211595899195,4cyclictest2194444-21tr20:10:300
2115958991916,2cyclictest3937-21cron20:00:010
2115958991916,2cyclictest2339091-21latency_hist22:00:010
2115958991915,2cyclictest660-21dbus-daemon23:00:020
2115958991915,2cyclictest2309621-21systemctl21:40:010
2115958991914,4cyclictest2302285-21latency_hist21:35:010
211595899190,6cyclictest2502389-21grep23:50:250
2115959991815,2cyclictest2457221-21latency_hist23:20:021
2115959991815,2cyclictest2210338-21sh20:25:011
2115959991815,2cyclictest0-21swapper/121:20:021
2115959991815,2cyclictest0-21swapper/121:10:011
211595899183,5cyclictest16-21ksoftirqd/021:50:290
211595899181,4cyclictest2236272-21irqstats20:45:280
2115958991811,6cyclictest2540683-21kthreadcore00:15:310
2115958991810,4cyclictest2531533-21/usr/sbin/munin00:10:290
2115958991810,3cyclictest16-21ksoftirqd/000:40:010
211595899180,5cyclictest2523917-21/usr/sbin/munin00:05:010
211595899180,3cyclictest2481645-21kthreadcore23:35:300
211595899180,16cyclictest2317459-21/usr/sbin/munin21:45:240
3153791170,1phc2sys0-21swapper/300:34:063
2115960991714,1cyclictest0-21swapper/223:55:022
2115960991714,1cyclictest0-21swapper/222:09:382
2115960991714,1cyclictest0-21swapper/221:05:012
2115960991714,1cyclictest0-21swapper/220:15:282
211595999175,5cyclictest2121995-21kworker/1:1+events_freezable19:25:271
211595999175,3cyclictest2192311-21kworker/u16:1-rpciod21:21:511
2115959991715,1cyclictest0-21swapper/121:30:041
2115959991714,2cyclictest660-21dbus-daemon22:20:011
2115959991714,2cyclictest2523772-21latency_hist00:05:001
2115959991714,2cyclictest1242-21mta-sts-daemon23:15:011
2115959991714,2cyclictest0-21swapper/123:40:361
2115959991714,2cyclictest0-21swapper/119:15:011
2115959991712,1cyclictest601rcuop/320:25:291
211595999171,14cyclictest660-21dbus-daemon00:40:011
2115959991710,4cyclictest1246-21mta-sts-daemon20:19:401
2115959991710,3cyclictest0-21swapper/122:45:011
2115959991710,3cyclictest0-21swapper/122:10:011
211595899179,4cyclictest2168066-21tail19:50:230
211595899178,5cyclictest0-21swapper/022:35:280
211595899176,2cyclictest0-21swapper/021:20:270
211595899174,8cyclictest2117480-21irqstats19:10:280
2115958991714,2cyclictest693-21systemd-logind19:25:010
2115958991714,2cyclictest2384405-21head22:30:270
2115958991714,2cyclictest2155165-21latency_hist19:40:020
2115958991711,5cyclictest0-21swapper/000:10:010
211595899170,6cyclictest2186082-21awk20:05:020
3153791161,1phc2sys0-21swapper/300:16:363
3153791160,3phc2sys0-21swapper/322:47:283
3153791160,2phc2sys0-21swapper/322:54:573
2115960991614,1cyclictest0-21swapper/222:10:272
2115960991614,1cyclictest0-21swapper/220:05:012
2115960991613,1cyclictest0-21swapper/220:45:342
2115960991613,1cyclictest0-21swapper/220:35:262
2115960991613,1cyclictest0-21swapper/219:20:012
2115960991613,1cyclictest0-21swapper/200:35:342
2115960991613,1cyclictest0-21swapper/200:26:042
2115960991613,1cyclictest0-21swapper/200:04:082
211595999167,4cyclictest0-21swapper/123:55:251
211595999163,5cyclictest2264958-21diskmemload00:11:271
2115959991614,1cyclictest1020-21runrttasks22:12:321
211595999161,3cyclictest0-21swapper/100:08:151
2115959991613,2cyclictest2546462-21grep00:20:031
2115959991613,2cyclictest2377406-21grep22:25:281
2115959991613,2cyclictest2238263-21kthreadcore20:45:301
2115959991613,2cyclictest2147048-21kthreadcore19:30:311
2115959991613,2cyclictest2130417-21apt-key19:20:011
2115959991613,2cyclictest0-21swapper/119:45:011
2115959991612,3cyclictest2435220-21wc23:05:031
2115959991612,3cyclictest1246-21mta-sts-daemon23:35:021
211595899168,1cyclictest191rcu_preempt22:25:290
211595899167,5cyclictest0-21swapper/023:10:280
211595899164,5cyclictest16-21ksoftirqd/019:40:320
211595899164,2cyclictest191rcu_preempt23:45:340
211595899163,2cyclictest191rcu_preempt23:05:290
2115958991613,2cyclictest171ktimers/020:40:020
2115958991610,2cyclictest501rcuop/223:20:250
211595899160,5cyclictest2418139-21mailstats22:50:340
211595899160,5cyclictest2315201-21grep21:40:350
3153791152,3phc2sys0-21swapper/322:26:453
3153791151,1phc2sys0-21swapper/323:46:163
3153791151,1phc2sys0-21swapper/323:26:403
3153791151,1phc2sys0-21swapper/323:26:403
3153791150,2phc2sys0-21swapper/321:35:223
3153791150,1phc2sys0-21swapper/300:09:123
22411152150,2sleep20-21swapper/220:50:232
2115960991513,1cyclictest0-21swapper/223:20:292
2115960991513,1cyclictest0-21swapper/222:30:012
2115960991513,1cyclictest0-21swapper/222:25:022
2115960991513,1cyclictest0-21swapper/220:10:252
2115960991513,1cyclictest0-21swapper/220:10:022
2115960991513,1cyclictest0-21swapper/219:15:022
2115960991513,1cyclictest0-21swapper/200:30:252
2115960991512,1cyclictest0-21swapper/223:45:342
2115960991512,1cyclictest0-21swapper/223:40:382
2115960991512,1cyclictest0-21swapper/223:30:252
2115960991512,1cyclictest0-21swapper/223:30:022
2115960991512,1cyclictest0-21swapper/223:30:022
2115960991512,1cyclictest0-21swapper/223:19:032
2115960991512,1cyclictest0-21swapper/223:05:342
2115960991512,1cyclictest0-21swapper/223:00:342
2115960991512,1cyclictest0-21swapper/221:50:132
2115960991512,1cyclictest0-21swapper/221:36:312
2115960991512,1cyclictest0-21swapper/221:15:402
2115960991512,1cyclictest0-21swapper/219:45:242
2115960991512,1cyclictest0-21swapper/219:35:012
211595999159,3cyclictest67250irq/126-eno121:45:441
211595999156,3cyclictest0-21swapper/120:35:311
2115959991513,1cyclictest2412684-21/usr/sbin/munin22:50:011
211595999151,2cyclictest2479473-21apt-get23:35:231
2115959991512,2cyclictest2563502-21kthreadcore00:30:291
2115959991512,2cyclictest2437537-21kthreadcore23:05:301
2115959991512,2cyclictest2176959-21kthreadcore19:55:301
2115959991512,2cyclictest0-21swapper/121:35:011
2115959991512,2cyclictest0-21swapper/100:25:231
2115959991511,3cyclictest2254468-21irqrtprio21:00:291
2115959991511,3cyclictest2193758-21kthreadcore20:10:311
2115959991511,3cyclictest2153413-21kthreadcore19:35:331
2115959991511,2cyclictest2115956-21cyclictest19:49:491
211595999150,11cyclictest2464701-21ssh23:25:151
211595999150,11cyclictest2464701-21ssh23:25:151
211595999150,11cyclictest2419522-21ssh22:53:371
211595899159,5cyclictest1247-21mta-sts-daemon20:17:420
211595899159,1cyclictest501rcuop/222:00:330
211595899159,1cyclictest501rcuop/221:12:440
211595899158,2cyclictest2259008-21kworker/0:2+events21:15:070
211595899158,1cyclictest2352335-21grep22:05:390
211595899156,7cyclictest23756302sleep022:24:280
211595899154,6cyclictest0-21swapper/020:55:230
2115958991512,2cyclictest571-21rpcbind19:45:220
2115958991512,2cyclictest2473112-21irqcore23:30:280
2115958991512,2cyclictest2216526-21latency_hist20:30:010
2115958991512,2cyclictest2192311-21kworker/u16:1-events_power_efficient21:05:020
2115958991512,2cyclictest0-21swapper/019:20:010
2115958991510,4cyclictest4922-21rtkit-daemon20:07:070
2115958991510,2cyclictest1247-21mta-sts-daemon22:48:190
2115958991510,2cyclictest1237-21mta-sts-daemon23:15:380
211595899150,9cyclictest274-21systemd-journal23:30:010
211595899150,9cyclictest274-21systemd-journal23:30:010
211595899150,11cyclictest2546619-21ssh00:20:220
3153791140,2phc2sys0-21swapper/321:21:563
3153791140,2phc2sys0-21swapper/321:14:263
2115960991412,1cyclictest0-21swapper/223:10:072
2115960991412,1cyclictest0-21swapper/222:50:302
2115960991412,1cyclictest0-21swapper/221:55:282
2115960991412,1cyclictest0-21swapper/221:40:232
2115960991411,1cyclictest0-21swapper/222:45:272
2115960991411,1cyclictest0-21swapper/222:44:482
2115960991411,1cyclictest0-21swapper/222:30:312
2115960991411,1cyclictest0-21swapper/221:30:292
2115960991411,1cyclictest0-21swapper/221:25:262
2115960991411,1cyclictest0-21swapper/221:20:292
2115960991411,1cyclictest0-21swapper/220:40:312
2115960991411,1cyclictest0-21swapper/220:25:232
2115960991411,1cyclictest0-21swapper/220:00:032
211596099140,7cyclictest0-21swapper/223:35:232
211595999149,4cyclictest1050-21snmpd20:56:031
211595999148,5cyclictest2546623-21apt-get00:20:221
2115959991411,2cyclictest2370365-21kthreadcore22:20:301
2115959991411,2cyclictest2332141-21acpi21:55:231
2115959991411,2cyclictest2243860-21kthreadcore20:50:311
2115959991411,2cyclictest1246-21mta-sts-daemon22:32:171
2115959991411,2cyclictest1246-21mta-sts-daemon21:41:171
2115959991411,2cyclictest0-21swapper/121:55:011
2115959991410,3cyclictest351ktimers/123:20:241
2115959991410,3cyclictest2170994-21kthreadcore19:50:301
2115959991410,3cyclictest2132367-21kthreadcore19:20:301
211595899147,1cyclictest191rcu_preempt20:20:340
211595899142,6cyclictest2229101-21cpu20:40:240
2115958991411,2cyclictest2241424-21cstates20:50:250
2115958991411,2cyclictest2217446-21gltestperf20:30:270
2115958991410,3cyclictest2143321-21cpuspeed_turbos19:30:250
3153791135,2phc2sys0-21swapper/321:17:553
3153791130,4phc2sys0-21swapper/322:12:593
3153791130,3phc2sys0-21swapper/322:21:543
3153791130,2phc2sys0-21swapper/323:06:303
3153791130,2phc2sys0-21swapper/300:01:313
2115960991311,1cyclictest0-21swapper/222:35:312
2115960991311,1cyclictest0-21swapper/221:05:252
2115960991311,1cyclictest0-21swapper/220:30:252
2115960991311,1cyclictest0-21swapper/219:35:252
2115960991311,1cyclictest0-21swapper/219:25:022
2115960991310,1cyclictest0-21swapper/222:55:362
2115960991310,1cyclictest0-21swapper/221:10:282
2115960991310,1cyclictest0-21swapper/219:50:312
2115960991310,1cyclictest0-21swapper/219:40:322
2115960991310,1cyclictest0-21swapper/200:20:262
2115960991310,1cyclictest0-21swapper/200:10:252
2115960991310,1cyclictest0-21swapper/200:07:332
211595999139,3cyclictest2232753-21kthreadcore20:40:311
211595999139,3cyclictest2218595-21kthreadcore20:30:301
2115959991310,2cyclictest1246-21mta-sts-daemon20:00:251
211595899137,5cyclictest1237-21mta-sts-daemon19:25:220
2115958991310,2cyclictest2116120-21munin-plugin-st19:10:020
3153791124,1phc2sys0-21swapper/321:33:383
3153791121,4phc2sys0-21swapper/320:20:363
3153791120,3phc2sys0-21swapper/320:47:383
3153791120,2phc2sys0-21swapper/323:38:493
3153791120,2phc2sys0-21swapper/320:05:343
3153791120,2phc2sys0-21swapper/319:55:323
3153791120,1phc2sys0-21swapper/323:56:513
3153791120,1phc2sys0-21swapper/322:01:443
3153791120,1phc2sys0-21swapper/321:27:443
2115960991210,1cyclictest0-21swapper/222:03:552
2115960991210,1cyclictest0-21swapper/219:25:302
211595999128,3cyclictest2190088-21kthreadcore20:05:301
3153791111,2phc2sys0-21swapper/322:15:273
3153791111,2phc2sys0-21swapper/320:40:283
3153791110,3phc2sys0-21swapper/322:30:303
3153791110,2phc2sys0-21swapper/321:55:473
3153791110,2phc2sys0-21swapper/300:20:433
3153791110,1phc2sys0-21swapper/323:41:393
3153791110,1phc2sys0-21swapper/321:50:053
3153791110,1phc2sys0-21swapper/321:07:533
3153791110,1phc2sys0-21swapper/319:12:373
3153791110,1phc2sys0-21swapper/319:08:233
3153791110,1phc2sys0-21swapper/300:13:173
211596099119,1cyclictest0-21swapper/220:20:292
211596099119,1cyclictest0-21swapper/219:10:012
211595999117,2cyclictest0-21swapper/119:10:011
3153791102,3phc2sys0-21swapper/300:35:223
3153791101,2phc2sys0-21swapper/322:07:133
3153791101,2phc2sys0-21swapper/319:52:363
3153791100,2phc2sys0-21swapper/320:15:203
3153791100,2phc2sys0-21swapper/320:05:023
3153791100,2phc2sys0-21swapper/319:45:233
3153791100,2phc2sys0-21swapper/319:40:023
3153791100,2phc2sys0-21swapper/319:30:283
3153791100,1phc2sys0-21swapper/322:35:513
3153791100,1phc2sys0-21swapper/319:25:473
315379191,2phc2sys0-21swapper/323:18:553
315379191,2phc2sys0-21swapper/300:25:283
315379190,2phc2sys0-21swapper/323:20:193
315379190,2phc2sys0-21swapper/323:00:033
315379190,2phc2sys0-21swapper/322:59:073
315379190,2phc2sys0-21swapper/322:40:043
315379190,2phc2sys0-21swapper/320:55:273
315379190,2phc2sys0-21swapper/320:35:273
315379190,2phc2sys0-21swapper/320:10:233
315379190,2phc2sys0-21swapper/319:15:293
315379190,1phc2sys0-21swapper/323:30:453
315379190,1phc2sys0-21swapper/321:45:323
315379190,1phc2sys0-21swapper/319:40:383
315379181,2phc2sys0-21swapper/321:00:043
315379181,2phc2sys0-21swapper/320:50:103
315379181,2phc2sys0-21swapper/320:28:343
315379180,2phc2sys0-21swapper/320:30:263
315379180,2phc2sys0-21swapper/319:20:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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