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2026-03-13 - 06:09
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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 Fri Mar 13, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212464921080,2sleep10-21swapper/100:11:431
191060621050,1sleep11910607-21aten_repower_cu22:11:351
18310662940,2sleep1341rcuc/121:26:381
16880992790,2sleep30-21swapper/319:36:363
20868112390,2sleep20-21swapper/223:51:002
1654802992414,5cyclictest2902298rtkit-daemon21:12:080
2649091220,2phc2sys0-21swapper/322:11:353
20040472220,2sleep20-21swapper/223:01:462
1654803992218,3cyclictest1286-21avahi-daemon23:05:021
1654804992119,1cyclictest0-21swapper/219:15:022
1654802992118,2cyclictest1997789-21turbostat.cron23:00:000
1654802992117,3cyclictest257-21systemd-journal23:25:000
1654802992116,3cyclictest257-21systemd-journal21:40:000
1654802992110,6cyclictest0-21swapper/022:51:490
2649091200,2phc2sys0-21swapper/323:26:223
1654803992017,2cyclictest281-21systemd-udevd23:11:451
1654803992017,2cyclictest1730236-21grep20:10:021
1654803992013,3cyclictest2159445-21kthreadcore00:31:431
1654803992013,3cyclictest1983203-21kthreadcore22:51:421
1654803992012,3cyclictest0-21swapper/122:25:021
1654802992011,5cyclictest1866789-21cstates21:46:370
165480299200,15cyclictest1802761-21diskmemload22:26:390
2649091190,1phc2sys0-21swapper/323:50:433
2649091190,1phc2sys0-21swapper/321:59:443
1654803991916,2cyclictest281-21systemd-udevd00:21:451
1654803991913,2cyclictest2053590-21kthreadcore23:31:421
1654803991912,3cyclictest2101456-21/usr/sbin/munin23:56:501
165480299199,5cyclictest0-21swapper/021:35:020
165480299199,5cyclictest0-21swapper/021:25:000
165480299198,6cyclictest0-21swapper/000:01:470
1654802991916,2cyclictest2129922-21cron00:15:000
1654802991916,2cyclictest1326-21systemd-logind20:35:000
1654802991916,2cyclictest1326-21systemd-logind20:35:000
1654802991916,2cyclictest0-21swapper/022:00:000
2649091180,2phc2sys0-21swapper/322:55:193
2649091180,1phc2sys0-21swapper/321:24:383
18839702180,2sleep20-21swapper/221:56:212
165480499186,8cyclictest0-21swapper/220:00:012
1654804991816,1cyclictest0-21swapper/220:50:012
165480499181,5cyclictest0-21swapper/219:40:012
1654804991815,1cyclictest0-21swapper/221:55:002
1654804991815,1cyclictest0-21swapper/221:20:012
1654804991814,2cyclictest0-21swapper/223:56:362
165480499180,11cyclictest0-21swapper/223:00:012
165480399185,6cyclictest1847054-21sh21:35:001
1654803991810,3cyclictest0-21swapper/121:45:011
1654802991816,1cyclictest2024277-21sh23:15:000
1654802991815,2cyclictest1286-21avahi-daemon22:10:000
1654802991815,2cyclictest0-21swapper/022:20:010
1654802991814,3cyclictest1754210-21idleruntime-cro20:30:000
1654802991811,1cyclictest134050irq/121-eno123:35:000
2649091170,3phc2sys0-21swapper/319:31:483
2649091170,2phc2sys0-21swapper/323:31:073
2649091170,2phc2sys0-21swapper/320:41:423
165480499172,7cyclictest0-21swapper/220:30:012
1654804991714,1cyclictest0-21swapper/220:36:442
1654804991714,1cyclictest0-21swapper/200:26:462
1654804991714,1cyclictest0-21swapper/200:25:012
1654803991714,2cyclictest1996-21runrttasks20:45:021
1654803991714,2cyclictest1-21systemd23:49:451
165480399170,4cyclictest0-21swapper/100:01:281
165480299179,2cyclictest0-21swapper/022:41:390
1654802991714,2cyclictest1946850-21grep22:31:400
1654802991714,2cyclictest1796470-21ls21:05:000
1654802991714,2cyclictest1288-1atopacctd23:01:490
1654802991714,2cyclictest0-21swapper/021:55:010
1654802991713,3cyclictest257-21systemd-journal23:40:010
1654802991712,1cyclictest1109-21hwrng00:17:070
1654802991711,5cyclictest2147730-21apt-key00:25:010
1654802991711,5cyclictest2007855-21aten2.4-expect23:06:360
165480299170,7cyclictest2043586-21cstates23:26:390
2649091160,3phc2sys0-21swapper/321:50:013
2649091160,3phc2sys0-21swapper/321:13:483
2649091160,2phc2sys0-21swapper/323:45:543
2649091160,2phc2sys0-21swapper/322:40:513
2649091160,2phc2sys0-21swapper/321:08:463
2649091160,2phc2sys0-21swapper/300:26:533
165480499161,4cyclictest0-21swapper/221:50:012
1654804991613,1cyclictest0-21swapper/223:50:012
1654804991613,1cyclictest0-21swapper/223:40:022
1654804991613,1cyclictest0-21swapper/223:31:422
1654804991613,1cyclictest0-21swapper/223:26:392
1654804991613,1cyclictest0-21swapper/223:25:002
1654804991613,1cyclictest0-21swapper/223:15:002
1654804991613,1cyclictest0-21swapper/223:06:442
1654804991613,1cyclictest0-21swapper/222:36:342
1654804991613,1cyclictest0-21swapper/221:41:442
1654804991613,1cyclictest0-21swapper/221:40:012
1654804991613,1cyclictest0-21swapper/220:16:452
1654804991613,1cyclictest0-21swapper/219:30:002
1654804991613,1cyclictest0-21swapper/200:38:202
1654804991613,1cyclictest0-21swapper/200:01:342
165480399169,1cyclictest601rcuop/323:40:391
165480399168,4cyclictest2023-21sshd23:50:451
165480399164,7cyclictest1660850-21kworker/u16:3+xprtiod22:58:471
1654803991613,2cyclictest2015588-21munin-plugin-st23:10:021
1654803991613,2cyclictest1905252-21kthreadcore22:06:431
1654803991613,2cyclictest1822343-21sh21:21:381
1654803991613,2cyclictest1802908-21latency_hist21:10:011
1654803991613,2cyclictest1326-21systemd-logind21:50:011
1654803991613,2cyclictest1296-21polkitd21:01:481
1654803991613,2cyclictest0-21swapper/100:30:011
1654803991612,3cyclictest2113034-21kworker/u16:2+nfsiod00:06:171
1654803991611,4cyclictest1977378-21ls22:46:451
165480399161,14cyclictest1818194-21ssh21:16:471
1654803991610,3cyclictest601rcuop/323:20:271
165480299169,6cyclictest0-21swapper/021:16:470
165480299169,5cyclictest1290-21dbus-daemon22:40:010
165480299166,8cyclictest257-21systemd-journal19:28:410
165480299166,5cyclictest0-21swapper/023:51:510
1654802991614,1cyclictest4114978-21snmpd19:21:400
1654802991613,2cyclictest2082396-21kthreadcore23:46:430
1654802991613,2cyclictest1713392-21kthreadcore19:56:430
2649091150,2phc2sys0-21swapper/323:38:133
2649091150,2phc2sys0-21swapper/323:16:043
1654804991513,1cyclictest0-21swapper/223:44:112
1654804991513,1cyclictest0-21swapper/221:26:382
1654804991513,1cyclictest0-21swapper/221:11:402
1654804991512,1cyclictest0-21swapper/222:26:432
1654804991512,1cyclictest0-21swapper/222:25:012
1654804991512,1cyclictest0-21swapper/222:05:012
1654804991512,1cyclictest0-21swapper/221:10:012
1654804991512,1cyclictest0-21swapper/220:41:402
1654804991512,1cyclictest0-21swapper/219:55:002
165480399158,1cyclictest601rcuop/321:36:381
165480399157,7cyclictest1924391-21cut22:16:451
165480399155,4cyclictest501rcuop/223:25:481
1654803991512,2cyclictest2174307-21latency_hist00:40:011
1654803991512,2cyclictest2136678-21grep00:16:491
1654803991512,2cyclictest2064776-21kthreadcore23:36:431
1654803991512,2cyclictest2029871-21kthreadcore23:16:441
1654803991512,2cyclictest1940636-21kthreadcore22:26:441
1654803991512,2cyclictest1778407-21latency_hist20:50:011
1654803991512,2cyclictest1763664-21kthreadcore20:36:451
1654803991512,2cyclictest1742156-21perf20:20:011
1654803991512,2cyclictest1290-21dbus-daemon19:20:011
1654803991512,2cyclictest1288-1atopacctd21:51:471
1654803991512,2cyclictest1288-1atopacctd19:41:431
1654803991512,2cyclictest1288-1atopacctd19:15:001
1654803991512,2cyclictest1-21systemd20:13:451
1654803991511,3cyclictest1948942-21kthreadcore22:31:451
1654803991511,3cyclictest1838330-21kworker/u16:1+nfsiod22:36:291
1654803991511,3cyclictest1781822-21kthreadcore20:51:431
1654803991511,3cyclictest1757366-21kthreadcore20:31:451
1654803991511,3cyclictest1757366-21kthreadcore20:31:451
1654803991511,3cyclictest1660850-21kworker/u16:3+nfsiod21:55:401
165480399150,3cyclictest1962787-21ssh22:40:071
165480299159,5cyclictest1697472-21tr19:41:450
165480299158,6cyclictest0-21swapper/021:41:380
165480299157,2cyclictest0-21swapper/022:11:400
165480299155,6cyclictest0-21swapper/000:26:520
165480299154,6cyclictest0-21swapper/000:31:360
1654802991514,1cyclictest0-21swapper/023:55:030
1654802991513,1cyclictest29021-21rtkit-daemon20:45:520
1654802991513,1cyclictest1766497-21grep20:40:010
1654802991512,2cyclictest2121143-21latency_hist00:10:000
1654802991512,2cyclictest2072653-21kthreadcore23:41:430
1654802991512,2cyclictest1929753-21kernelversion22:21:420
1654802991512,2cyclictest1898365-21unixbench-2d22:01:490
1654802991512,2cyclictest1688519-21fschecks_count19:36:380
1654802991511,3cyclictest1827902-21kworker/u16:0+nfsiod21:27:300
2649091147,3phc2sys0-21swapper/321:36:433
2649091141,2phc2sys0-21swapper/321:51:433
2649091140,2phc2sys0-21swapper/321:18:213
2649091140,2phc2sys0-21swapper/300:36:433
2649091140,2phc2sys0-21swapper/300:34:433
1654804991412,1cyclictest0-21swapper/221:35:012
1654804991411,2cyclictest0-21swapper/200:31:422
1654804991411,1cyclictest0-21swapper/223:16:432
1654804991411,1cyclictest0-21swapper/222:46:442
1654804991411,1cyclictest0-21swapper/222:18:392
1654804991411,1cyclictest0-21swapper/222:06:432
1654804991411,1cyclictest0-21swapper/221:01:442
1654804991411,1cyclictest0-21swapper/219:21:412
1654804991411,1cyclictest0-21swapper/200:18:292
1654804991411,1cyclictest0-21swapper/200:06:442
1654804991410,2cyclictest0-21swapper/222:31:422
165480399147,2cyclictest0-21swapper/119:21:341
165480399146,3cyclictest501rcuop/220:02:211
165480399145,3cyclictest501rcuop/219:51:031
1654803991412,1cyclictest1700007-21/usr/sbin/munin19:46:381
1654803991411,2cyclictest1893723-21head22:01:401
1654803991411,2cyclictest1787550-21kthreadcore20:56:441
1654803991411,2cyclictest1714121-21kthreadcore19:56:431
1654803991410,3cyclictest1751794-21kthreadcore20:26:441
1654803991410,3cyclictest1684690-21kthreadcore19:31:441
1654803991410,3cyclictest1660850-21kworker/u16:3+nfsiod21:12:311
165480299145,5cyclictest0-21swapper/022:46:170
165480299145,5cyclictest0-21swapper/020:40:530
165480299144,3cyclictest1737895-21kthreadcore20:16:430
165480299143,5cyclictest2030004-21cut23:16:440
1654802991411,2cyclictest29021-21rtkit-daemon19:13:390
1654802991411,2cyclictest1706793-21gltestperf19:51:390
1654802991411,2cyclictest1703328-21kthreadcore19:46:420
1654802991411,2cyclictest1654817-21latency_hist19:10:010
1654802991411,2cyclictest1654800-21cyclictest00:36:400
2649091133,2phc2sys0-21swapper/323:07:293
2649091132,2phc2sys0-21swapper/322:04:013
2649091131,5phc2sys0-21swapper/321:01:363
2649091130,2phc2sys0-21swapper/323:43:013
2649091130,2phc2sys0-21swapper/322:23:233
2649091130,2phc2sys0-21swapper/322:08:383
2649091130,1phc2sys0-21swapper/319:42:343
19380772130,2sleep30-21swapper/322:26:403
165480499138,3cyclictest0-21swapper/220:01:422
1654804991311,1cyclictest0-21swapper/222:51:432
1654804991311,1cyclictest0-21swapper/221:20:022
1654804991311,1cyclictest0-21swapper/219:41:432
1654804991311,1cyclictest0-21swapper/219:16:442
1654804991310,1cyclictest0-21swapper/222:41:412
1654804991310,1cyclictest0-21swapper/222:11:422
1654804991310,1cyclictest0-21swapper/220:31:402
1654804991310,1cyclictest0-21swapper/220:31:402
1654804991310,1cyclictest0-21swapper/220:11:412
1654804991310,1cyclictest0-21swapper/219:46:432
1654804991310,1cyclictest0-21swapper/219:31:432
1654803991310,2cyclictest1675720-21aten_repower_fr19:26:371
1654803991310,2cyclictest1654862-21true19:10:011
165480299134,5cyclictest0-21swapper/020:13:320
165480299132,6cyclictest1682002-21aten2.4-expect19:31:370
1654802991311,1cyclictest1729790-21latency_hist20:10:000
1654802991310,2cyclictest1802116-21mailstats21:06:470
1654802991310,2cyclictest1788730-21kthreadcore20:56:440
1654802991310,2cyclictest1780453-21kthreadcore20:51:430
1654802991310,2cyclictest1745707-21kthreadcore20:21:450
1654802991310,2cyclictest1718426-21cpuspeed_turbos20:01:370
1654802991310,2cyclictest1662466-21kthreadcore19:15:020
2649091124,1phc2sys0-21swapper/319:15:173
2649091120,3phc2sys0-21swapper/321:45:023
2649091120,2phc2sys0-21swapper/323:13:213
2649091120,2phc2sys0-21swapper/321:25:583
2649091120,2phc2sys0-21swapper/319:51:363
2649091120,1phc2sys0-21swapper/322:19:423
165480499129,2cyclictest0-21swapper/220:51:432
1654804991210,1cyclictest0-21swapper/220:56:362
1654804991210,1cyclictest0-21swapper/220:25:002
1654804991210,1cyclictest0-21swapper/220:06:382
1654804991210,1cyclictest0-21swapper/200:11:422
165480399129,2cyclictest1690718-21kthreadcore19:36:421
165480399128,3cyclictest1743528-21irqcore20:21:431
2649091113,2phc2sys0-21swapper/322:40:003
2649091112,2phc2sys0-21swapper/322:32:113
2649091111,2phc2sys0-21swapper/323:05:013
2649091110,2phc2sys0-21swapper/323:56:283
2649091110,2phc2sys0-21swapper/322:51:463
2649091110,2phc2sys0-21swapper/320:51:363
2649091110,1phc2sys0-21swapper/319:29:003
165480499118,1cyclictest0-21swapper/219:10:012
2649091102,2phc2sys0-21swapper/300:11:383
2649091101,3phc2sys0-21swapper/320:36:403
2649091101,2phc2sys0-21swapper/320:16:363
2649091100,2phc2sys0-21swapper/323:20:413
2649091100,2phc2sys0-21swapper/322:45:293
2649091100,2phc2sys0-21swapper/321:30:233
2649091100,2phc2sys0-21swapper/320:26:383
2649091100,2phc2sys0-21swapper/320:06:433
2649091100,2phc2sys0-21swapper/320:00:013
2649091100,2phc2sys0-21swapper/319:15:013
2649091100,2phc2sys0-21swapper/300:16:273
2649091100,2phc2sys0-21swapper/300:06:503
2649091100,2phc2sys0-21swapper/300:01:573
2649091100,1phc2sys0-21swapper/320:47:433
2649091100,1phc2sys0-21swapper/320:13:163
264909191,2phc2sys0-21swapper/319:20:023
264909190,2phc2sys0-21swapper/320:56:413
264909190,2phc2sys0-21swapper/320:34:563
264909190,2phc2sys0-21swapper/320:34:563
264909190,2phc2sys0-21swapper/320:21:413
264909190,2phc2sys0-21swapper/320:01:383
264909190,2phc2sys0-21swapper/319:06:363
264909190,2phc2sys0-21swapper/300:21:043
264909180,2phc2sys0-21swapper/319:45:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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