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2026-04-21 - 05:42
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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 Tue Apr 21, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24106852260,2sleep20-21swapper/221:10:002
2257304992522,2cyclictest2304449-21grep19:45:021
2257303992522,2cyclictest2285263-21grep19:30:020
2257304992421,2cyclictest2264064-21if_enp1s0.819:15:021
225730399248,7cyclictest0-21swapper/023:45:010
26086432230,2sleep20-21swapper/223:20:472
2257304992319,3cyclictest2486333-21latency_hist22:00:001
2257303992312,6cyclictest0-21swapper/021:55:010
383433398220,6rtkit-daemon351ktimers/120:17:021
2257305992218,1cyclictest0-21swapper/222:25:022
2257304992219,2cyclictest2426277-21ssh21:20:031
2257303992218,3cyclictest2257297-21cyclictest20:40:020
2257303992210,7cyclictest0-21swapper/000:00:010
383433398210,6rtkit-daemon351ktimers/122:45:581
2257304992117,2cyclictest0-21swapper/123:25:011
2257303992110,6cyclictest0-21swapper/023:45:470
2649091201,9phc2sys0-21swapper/323:05:413
2257305992018,1cyclictest0-21swapper/222:30:002
2257305992017,1cyclictest0-21swapper/221:55:002
2257304992017,2cyclictest3824565-21in:imuxsock23:15:001
2257304992017,2cyclictest3824565-21in:imuxsock23:15:001
2257304992017,2cyclictest2531764-21apt-config22:30:011
2257304992017,2cyclictest2341687-21latency_hist20:15:001
2257303992017,2cyclictest2605216-21python323:15:560
2257303992015,4cyclictest2673235-21grep00:00:550
2257305991917,1cyclictest0-21swapper/219:30:022
2257305991916,1cyclictest0-21swapper/200:15:012
225730599191,13cyclictest0-21swapper/200:20:012
2257304991916,2cyclictest2720134-21wc00:35:001
2257304991916,2cyclictest2720134-21wc00:35:001
2257304991916,2cyclictest2684309-21irqstats00:10:481
2257304991916,2cyclictest2323166-21sh20:00:011
2257304991912,3cyclictest2571320-21kthreadcore22:55:491
2257304991910,4cyclictest0-21swapper/121:30:511
225730399197,6cyclictest0-21swapper/021:25:020
2257303991912,6cyclictest0-21swapper/000:20:020
2257303991910,8cyclictest0-21swapper/022:20:430
2257303991910,5cyclictest3851703-21mta-sts-daemon00:35:570
225730399190,14cyclictest2630441-21/usr/sbin/munin23:35:540
2257305991815,1cyclictest0-21swapper/200:00:012
2257305991814,2cyclictest0-21swapper/221:40:022
2257305991814,2cyclictest0-21swapper/221:10:252
2257304991815,2cyclictest2698897-21if_enp1s000:20:471
2257304991815,2cyclictest2631313-21if_enp1s023:35:461
2257304991815,2cyclictest2429041-21kthreadcore21:20:491
2257304991810,3cyclictest0-21swapper/123:20:011
2257304991810,3cyclictest0-21swapper/122:39:451
225730399187,6cyclictest0-21swapper/022:10:410
225730399182,5cyclictest491rcuog/223:34:510
2257303991815,2cyclictest2456407-21sh21:40:000
2257303991815,2cyclictest2448797-21apt-key21:35:000
2257303991815,2cyclictest2297658-21dump-pmu-power19:40:000
2257303991814,3cyclictest2344920-21kthreadcore20:15:490
2257303991813,4cyclictest2380152-21tr20:45:430
2649091171,3phc2sys0-21swapper/320:15:473
2649091170,2phc2sys0-21swapper/322:40:293
2649091170,2phc2sys0-21swapper/300:27:353
225730599172,6cyclictest0-21swapper/223:40:012
2257305991714,1cyclictest0-21swapper/223:43:462
2257305991714,1cyclictest0-21swapper/221:05:012
2257305991714,1cyclictest0-21swapper/200:05:192
225730499174,4cyclictest3851702-21mta-sts-daemon19:51:161
2257304991715,1cyclictest0-21swapper/122:10:001
2257304991714,2cyclictest2652459-21cron23:50:001
2257304991714,2cyclictest2278713-21cut19:25:011
2257304991714,2cyclictest2257297-21cyclictest22:10:491
2257304991714,2cyclictest0-21swapper/121:15:011
2257304991713,3cyclictest2623702-21tail23:30:461
2257304991713,3cyclictest2368800-21kthreadcore20:35:491
2257304991713,2cyclictest0-21swapper/119:10:011
2257304991710,3cyclictest2692341-21kthreadcore00:15:471
225730399179,4cyclictest0-21swapper/019:25:010
225730399177,6cyclictest0-21swapper/022:50:550
225730399177,5cyclictest0-21swapper/023:05:450
225730399177,5cyclictest0-21swapper/022:55:440
225730399177,5cyclictest0-21swapper/021:40:460
225730399172,7cyclictest2404470-21awk21:05:000
2257303991714,2cyclictest2703330-21mailstats00:20:550
2257303991714,2cyclictest2683789-21sh00:10:460
2257303991714,2cyclictest2599423-21latency_hist23:15:010
2257303991714,2cyclictest2599423-21latency_hist23:15:010
2257303991714,2cyclictest2484943-21grep21:55:560
2257303991713,3cyclictest2535833-21kthreadcore22:30:490
2257303991713,2cyclictest0-21swapper/023:30:010
2649091160,1phc2sys0-21swapper/321:18:333
2257305991614,1cyclictest0-21swapper/220:45:022
2257305991613,1cyclictest0-21swapper/223:50:162
2257305991613,1cyclictest0-21swapper/223:46:472
2257305991613,1cyclictest0-21swapper/223:05:562
2257305991613,1cyclictest0-21swapper/222:30:452
2257305991613,1cyclictest0-21swapper/221:45:012
2257305991613,1cyclictest0-21swapper/200:40:002
2257305991613,1cyclictest0-21swapper/200:00:412
2257305991612,2cyclictest0-21swapper/223:30:502
2257305991612,2cyclictest0-21swapper/219:20:452
2257305991612,2cyclictest0-21swapper/200:32:082
2257305991612,2cyclictest0-21swapper/200:32:082
225730499168,3cyclictest2670163-21kthreadcore00:00:501
225730499168,3cyclictest0-21swapper/123:55:011
2257304991613,2cyclictest3824500-21cron21:00:001
2257304991613,2cyclictest2533189-21tail22:30:451
2257304991613,2cyclictest2349020-21cut20:20:461
2257304991613,2cyclictest2291435-21systemd-run19:35:001
2257304991613,2cyclictest2257297-21cyclictest00:30:021
2257304991612,3cyclictest2324763-21kthreadcore20:00:491
2257304991611,4cyclictest3834328-21sendmail-mta20:09:491
225730399169,6cyclictest0-21swapper/023:00:510
225730399169,2cyclictest2532034-21/usr/sbin/munin22:30:010
2257303991613,2cyclictest2416476-21mailstats21:10:530
2257303991613,2cyclictest2310570-21cut19:50:020
2257303991613,2cyclictest2257297-21cyclictest20:45:010
2257303991613,2cyclictest1996-21runrttasks23:51:120
2257303991613,2cyclictest0-21swapper/019:20:000
225730399161,2cyclictest0-21swapper/022:19:220
2257303991612,3cyclictest3851704-21mta-sts-daemon00:29:310
225730399161,13cyclictest2554982-21/usr/sbin/munin22:45:510
2257303991610,5cyclictest3851702-21mta-sts-daemon00:32:240
2257303991610,5cyclictest3851702-21mta-sts-daemon00:32:240
2649091151,1phc2sys0-21swapper/319:35:533
2649091150,3phc2sys0-21swapper/300:36:413
2649091150,2phc2sys0-21swapper/321:33:513
2649091150,2phc2sys0-21swapper/321:25:513
2649091150,2phc2sys0-21swapper/300:14:203
2649091150,2phc2sys0-21swapper/300:09:353
2257305991513,1cyclictest0-21swapper/222:00:012
2257305991513,1cyclictest0-21swapper/200:25:012
225730599151,2cyclictest0-21swapper/220:10:422
2257305991512,1cyclictest0-21swapper/223:16:382
2257305991512,1cyclictest0-21swapper/222:50:432
2257305991512,1cyclictest0-21swapper/222:37:162
2257305991512,1cyclictest0-21swapper/222:20:022
2257305991512,1cyclictest0-21swapper/221:25:462
2257305991512,1cyclictest0-21swapper/220:50:012
2257305991512,1cyclictest0-21swapper/220:10:002
2257305991512,1cyclictest0-21swapper/220:00:442
2257305991512,1cyclictest0-21swapper/219:15:002
2257305991512,1cyclictest0-21swapper/200:26:132
2257305991511,2cyclictest0-21swapper/223:00:472
225730499158,3cyclictest2266307-21tail19:15:421
2257304991513,1cyclictest3851704-21mta-sts-daemon23:28:371
2257304991513,1cyclictest3851702-21mta-sts-daemon22:19:561
2257304991513,1cyclictest0-21swapper/121:30:021
2257304991512,2cyclictest3851703-21mta-sts-daemon22:51:231
2257304991512,2cyclictest2682453-21idleruntime-cro00:10:001
2257304991512,2cyclictest2667525-21latency_hist00:00:011
2257304991512,2cyclictest2645008-21systemd-run23:45:001
2257304991512,2cyclictest2465087-21head21:45:451
2257304991512,2cyclictest2360672-21latency_hist20:30:011
2257304991511,3cyclictest2213539-21kworker/u16:1+nfsiod21:50:081
2257304991510,2cyclictest3851705-21mta-sts-daemon23:06:111
225730399158,6cyclictest0-21swapper/022:05:460
225730399158,5cyclictest2611747-21tr23:20:500
225730399155,6cyclictest0-21swapper/020:05:020
225730399151,9cyclictest2359375-21cat20:25:500
2257303991512,2cyclictest3851704-21mta-sts-daemon21:17:260
2257303991512,2cyclictest3851702-21mta-sts-daemon19:10:520
2257303991512,2cyclictest3827634-1atopacctd21:45:490
2257303991512,2cyclictest3824567-21rs:main0
2257303991512,2cyclictest2676110-21cut00:05:450
2257303991512,2cyclictest2554555-21latency_hist22:45:010
2257303991512,2cyclictest2354260-21latency_hist20:25:000
2257303991512,2cyclictest2310774-21/usr/sbin/munin19:50:570
2257303991512,2cyclictest2300369-21kthreadcore19:40:500
2257303991512,2cyclictest0-21swapper/019:10:010
2257303991511,3cyclictest0-21swapper/021:10:010
2257303991510,4cyclictest3851704-21mta-sts-daemon21:25:460
2257303991510,3cyclictest2329223-21wc20:05:000
2257303991510,2cyclictest2388949-21kthreadcore20:50:480
2649091141,6phc2sys0-21swapper/300:15:403
2649091140,3phc2sys0-21swapper/323:35:413
2649091140,2phc2sys0-21swapper/323:59:543
2649091140,2phc2sys0-21swapper/323:23:083
2649091140,2phc2sys0-21swapper/322:47:273
2649091140,2phc2sys0-21swapper/320:32:393
2649091140,1phc2sys0-21swapper/323:03:343
2649091140,1phc2sys0-21swapper/322:20:253
225730599149,2cyclictest0-21swapper/220:20:492
225730599142,8cyclictest0-21swapper/219:20:012
225730599142,7cyclictest0-21swapper/219:10:012
2257305991412,1cyclictest0-21swapper/222:57:112
2257305991412,1cyclictest0-21swapper/222:45:012
2257305991411,2cyclictest0-21swapper/219:30:482
2257305991411,1cyclictest0-21swapper/223:25:552
2257305991411,1cyclictest0-21swapper/222:48:222
2257305991411,1cyclictest0-21swapper/222:00:552
2257305991411,1cyclictest0-21swapper/221:34:232
2257305991411,1cyclictest0-21swapper/221:20:292
2257305991411,1cyclictest0-21swapper/221:17:452
2257305991411,1cyclictest0-21swapper/220:55:452
2257305991411,1cyclictest0-21swapper/220:30:502
2257305991411,1cyclictest0-21swapper/219:55:442
2257305991411,1cyclictest0-21swapper/219:45:012
2257305991411,1cyclictest0-21swapper/219:35:482
2257305991410,2cyclictest0-21swapper/220:25:482
225730499147,5cyclictest134050irq/121-eno100:35:541
2257304991411,2cyclictest3851705-21mta-sts-daemon21:37:251
2257304991411,2cyclictest3851704-21mta-sts-daemon22:20:101
2257304991411,2cyclictest3851703-21mta-sts-daemon22:40:461
2257304991411,2cyclictest2410660-21turbostat.cron21:10:011
2257304991411,2cyclictest2375010-21kthreadcore20:40:471
2257304991411,2cyclictest2292863-21tr19:35:471
2257304991411,2cyclictest2257297-21cyclictest19:45:491
2257304991411,2cyclictest1426-21gdbus23:05:011
2257304991411,2cyclictest0-21swapper/122:00:481
2257304991410,3cyclictest2283408-21kthreadcore19:25:511
225730499140,3cyclictest0-21swapper/121:42:011
225730399149,2cyclictest3851703-21mta-sts-daemon22:02:010
225730399147,5cyclictest2366888-21systemd-run20:35:010
2257303991411,2cyclictest3851703-21mta-sts-daemon20:55:440
2257303991410,3cyclictest2285754-21cpuspeed_turbos19:30:430
2649091131,1phc2sys0-21swapper/320:25:023
2649091130,2phc2sys0-21swapper/323:40:423
2649091130,2phc2sys0-21swapper/323:17:423
2649091130,2phc2sys0-21swapper/322:17:533
2649091130,2phc2sys0-21swapper/321:53:203
2649091130,2phc2sys0-21swapper/321:43:543
2257305991311,1cyclictest0-21swapper/220:35:482
2257305991310,2cyclictest0-21swapper/220:15:502
2257305991310,1cyclictest0-21swapper/223:10:472
2257305991310,1cyclictest0-21swapper/223:10:472
2257305991310,1cyclictest0-21swapper/222:10:182
2257305991310,1cyclictest0-21swapper/221:49:122
2257305991310,1cyclictest0-21swapper/219:45:462
225730499133,2cyclictest491rcuog/221:00:491
2257304991310,2cyclictest2392214-21systemd20:55:021
2257304991310,2cyclictest2385687-21latency_hist20:50:011
2257304991310,2cyclictest0-21swapper/120:30:571
2257303991310,2cyclictest2539917-21acpi22:35:430
2257303991310,2cyclictest2336533-21gltestperf20:10:460
2649091121,2phc2sys0-21swapper/320:25:513
2649091120,3phc2sys0-21swapper/322:39:413
2649091120,2phc2sys0-21swapper/322:50:233
2649091120,2phc2sys0-21swapper/321:46:343
2649091120,2phc2sys0-21swapper/300:22:313
2649091120,1phc2sys0-21swapper/323:12:033
2649091120,1phc2sys0-21swapper/323:12:033
2257305991210,1cyclictest0-21swapper/222:05:482
2257305991210,1cyclictest0-21swapper/220:54:302
2257305991210,1cyclictest0-21swapper/219:55:022
26594392110,3sleep30-21swapper/323:53:283
2649091110,3phc2sys0-21swapper/320:05:423
2649091110,2phc2sys0-21swapper/323:25:433
2649091110,2phc2sys0-21swapper/321:11:353
2649091110,2phc2sys0-21swapper/321:00:413
2649091110,2phc2sys0-21swapper/319:20:463
2649091110,1phc2sys0-21swapper/319:58:483
2649091110,1phc2sys0-21swapper/319:40:383
2649091110,1phc2sys0-21swapper/319:26:303
2649091110,1phc2sys0-21swapper/319:06:393
2649091110,1phc2sys0-21swapper/300:30:243
2649091110,1phc2sys0-21swapper/300:30:243
2649091101,2phc2sys0-21swapper/322:57:373
2649091101,2phc2sys0-21swapper/322:00:413
2649091101,2phc2sys0-21swapper/319:10:483
2649091100,3phc2sys0-21swapper/319:30:483
2649091100,2phc2sys0-21swapper/323:46:363
2649091100,2phc2sys0-21swapper/323:32:413
2649091100,2phc2sys0-21swapper/322:26:023
2649091100,2phc2sys0-21swapper/322:06:423
2649091100,2phc2sys0-21swapper/321:55:483
2649091100,2phc2sys0-21swapper/321:36:523
2649091100,2phc2sys0-21swapper/321:20:293
2649091100,2phc2sys0-21swapper/321:05:423
2649091100,2phc2sys0-21swapper/320:51:403
2649091100,2phc2sys0-21swapper/320:45:433
2649091100,2phc2sys0-21swapper/320:15:003
2649091100,2phc2sys0-21swapper/300:04:393
2649091100,1phc2sys0-21swapper/320:41:223
2649091100,1phc2sys0-21swapper/320:02:013
264909190,3phc2sys0-21swapper/319:50:013
264909190,2phc2sys0-21swapper/322:30:193
264909190,2phc2sys0-21swapper/322:10:153
264909190,2phc2sys0-21swapper/320:55:443
264909190,2phc2sys0-21swapper/320:35:573
264909190,2phc2sys0-21swapper/319:50:433
264909180,2phc2sys0-21swapper/319:15:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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