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2026-05-06 - 08:31
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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 May 06, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18468122690,1sleep01846810-21ssh23:12:230
18335232550,1sleep00-21swapper/023:05:250
17032482360,2sleep00-21swapper/021:40:160
16877452310,2sleep20-21swapper/221:30:002
1503905992921,3cyclictest0-21swapper/122:50:031
1503904992817,7cyclictest1290-21dbus-daemon21:40:000
1503904992514,6cyclictest1755032-21sh22:11:570
2649091241,6phc2sys0-21swapper/300:30:203
1503905992416,3cyclictest1965048-21kthreadcore00:30:271
1503906992320,1cyclictest0-21swapper/223:50:002
1503905992320,2cyclictest1832669-21munin-run23:05:011
1503904992320,2cyclictest1901301-21/usr/sbin/munin23:50:010
1503906992219,1cyclictest0-21swapper/200:05:002
1503906992218,2cyclictest0-21swapper/200:10:022
150390499229,8cyclictest1503902-21cyclictest20:05:290
1503904992215,6cyclictest1680204-21latency_hist21:25:010
1503904992212,6cyclictest3952751-21ntpd23:20:270
150390499220,18cyclictest1786623-21latency_hist22:35:010
383433398210,2rtkit-daemon3827634-1atopacctd22:59:261
1503906992118,1cyclictest0-21swapper/223:30:002
1503906992118,1cyclictest0-21swapper/221:00:002
1503904992118,2cyclictest1748533-21grep22:10:000
1503904992118,2cyclictest1740942-21grep22:05:000
1503904992116,1cyclictest191rcu_preempt00:28:150
150390499211,5cyclictest1918175-21kernelversion00:00:280
1503904992115,5cyclictest1853836-21runrttasks23:15:460
383433398200,4rtkit-daemon3851702-21mta-sts-daemon19:38:481
1503906992018,1cyclictest0-21swapper/223:10:022
1503906992017,1cyclictest0-21swapper/219:15:012
150390599209,4cyclictest0-21swapper/100:00:211
1503905992017,2cyclictest1657330-21grep21:10:011
150390499209,4cyclictest1805492-21ssh22:45:290
150390499206,9cyclictest1290-21dbus-daemon23:55:020
150390499204,3cyclictest1538723-21cstates19:35:230
150390499204,11cyclictest0-21swapper/000:10:210
1503904992012,4cyclictest3851703-21mta-sts-daemon21:15:210
1503904992012,3cyclictest191rcu_preempt22:25:010
383433398190,3rtkit-daemon3840882-21snmpd21:14:221
1503906991916,1cyclictest0-21swapper/223:31:482
150390699191,10cyclictest0-21swapper/222:50:002
1503905991917,1cyclictest0-21swapper/120:00:001
1503905991916,2cyclictest1741128-21cut22:05:011
1503905991911,3cyclictest0-21swapper/123:35:001
1503905991910,3cyclictest0-21swapper/121:55:001
150390499198,6cyclictest1732513-21runrttasks21:57:370
150390499198,6cyclictest0-21swapper/000:35:280
150390499197,8cyclictest1290-21dbus-daemon23:05:000
150390499194,10cyclictest1606157-21python320:25:330
150390499193,8cyclictest0-21swapper/020:55:330
150390499193,11cyclictest0-21swapper/021:13:390
150390499193,10cyclictest1651203-21kworker/u16:1+nfsiod21:51:230
150390499192,7cyclictest1876872-21diskmemload23:31:200
150390499192,3cyclictest1510117-21latency_hist19:15:020
1503904991916,2cyclictest3827634-1atopacctd23:45:010
1503904991916,2cyclictest3827634-1atopacctd19:45:010
1503904991913,5cyclictest1531272-21apt-get19:30:000
1503904991910,7cyclictest0-21swapper/022:55:000
383433398180,8rtkit-daemon3851705-21mta-sts-daemon21:42:361
2649091180,2phc2sys0-21swapper/323:30:483
2649091180,2phc2sys0-21swapper/321:44:173
1503906991816,1cyclictest0-21swapper/223:00:002
1503906991815,1cyclictest0-21swapper/222:35:342
1503906991815,1cyclictest0-21swapper/222:25:002
1503906991815,1cyclictest0-21swapper/222:00:002
1503906991815,1cyclictest0-21swapper/200:30:232
1503905991815,2cyclictest1746627-21mailstats22:05:331
1503905991815,2cyclictest1718359-21cut21:50:021
1503905991815,2cyclictest1619330-21run-parts20:40:001
1503905991815,2cyclictest1563134-21munin-plugin-st19:55:001
1503905991814,3cyclictest1974950-21kthreadcore00:35:291
150390499187,6cyclictest0-21swapper/000:30:290
150390499185,8cyclictest1657179-21diskmemload21:45:230
150390499183,10cyclictest0-21swapper/022:19:220
150390499182,11cyclictest1692694-21cut21:30:280
150390499182,11cyclictest1628909-21cut20:45:280
150390499182,11cyclictest1519924-21basename19:20:250
150390499182,10cyclictest1566818-21cut19:55:280
150390499181,7cyclictest1866795-21cut23:25:280
150390499181,7cyclictest1582423-21grep20:10:220
150390499181,7cyclictest1582423-21grep20:10:220
150390499181,6cyclictest1786971-21/usr/sbin/munin22:35:360
150390499181,5cyclictest1924650-21aten2.4-expect00:05:230
150390499181,4cyclictest1618695-21sed20:35:330
1503904991814,3cyclictest1801818-21idleruntime-cro22:45:000
1503904991814,3cyclictest1290-21dbus-daemon00:20:010
150390499181,3cyclictest1652133-21ps21:05:270
1503904991812,2cyclictest3851705-21mta-sts-daemon23:55:190
150390499181,12cyclictest1570621-21cut20:00:260
150390499181,12cyclictest1555182-21cut19:45:290
2649091170,2phc2sys0-21swapper/322:25:523
2649091170,1phc2sys0-21swapper/321:28:223
1503906991715,1cyclictest0-21swapper/221:25:012
1503906991714,1cyclictest0-21swapper/223:20:012
1503906991714,1cyclictest0-21swapper/222:30:332
1503906991714,1cyclictest0-21swapper/222:25:332
1503906991714,1cyclictest0-21swapper/221:36:352
1503906991714,1cyclictest0-21swapper/221:10:292
1503906991714,1cyclictest0-21swapper/220:20:002
150390699171,11cyclictest0-21swapper/221:50:202
150390599178,4cyclictest0-21swapper/123:15:001
1503905991714,2cyclictest1853700-21grep23:15:351
1503905991714,2cyclictest1644589-21apt-key21:00:011
1503905991714,2cyclictest1538041-21/usr/sbin/munin19:35:011
1503905991714,2cyclictest1531527-21sh19:30:011
1503905991712,4cyclictest3851702-21mta-sts-daemon22:30:351
150390499179,5cyclictest1771896-21head22:25:230
150390499176,6cyclictest1646600-21kthreadcore21:00:280
150390499172,10cyclictest1817762-21expr22:55:220
150390499172,10cyclictest1623134-21cut20:40:290
150390499171,9cyclictest1952548-21basename00:20:340
150390499171,6cyclictest1632714-21expr20:50:230
150390499171,11cyclictest1607705-21cstates20:30:220
150390499171,11cyclictest1588845-21cstates20:15:210
150390499171,11cyclictest1558908-21cut19:50:270
150390499171,10cyclictest1881521-21cut23:35:280
150390499170,7cyclictest1600568-21chrt20:24:330
2649091160,2phc2sys0-21swapper/323:38:483
2649091160,2phc2sys0-21swapper/321:38:303
2649091160,2phc2sys0-21swapper/300:24:373
2649091160,1phc2sys0-21swapper/322:18:283
150390699161,6cyclictest0-21swapper/219:15:212
1503906991614,1cyclictest0-21swapper/222:15:012
1503906991614,1cyclictest0-21swapper/200:40:012
1503906991613,1cyclictest0-21swapper/223:35:222
1503906991613,1cyclictest0-21swapper/223:25:002
1503906991613,1cyclictest0-21swapper/222:40:322
1503906991613,1cyclictest0-21swapper/200:20:252
1503906991613,1cyclictest0-21swapper/200:00:022
150390699161,10cyclictest0-21swapper/220:40:002
150390599167,5cyclictest1696013-21cpuspeed_turbos21:35:241
150390599167,3cyclictest1718363-21kworker/u16:2+nfsiod22:44:161
1503905991613,2cyclictest3851705-21mta-sts-daemon22:21:261
1503905991613,2cyclictest3851702-21mta-sts-daemon23:25:311
1503905991613,2cyclictest1718363-21kworker/u16:2-events_unbound21:55:271
1503905991613,2cyclictest1588755-21tr20:15:211
1503905991613,2cyclictest1-21systemd21:35:001
1503905991613,2cyclictest0-21swapper/122:55:011
1503905991613,2cyclictest0-21swapper/119:15:021
1503905991613,2cyclictest0-21swapper/100:15:241
150390499161,10cyclictest1681070-21cat21:25:220
150390499161,10cyclictest1532258-21cstates19:30:240
2649091154,2phc2sys0-21swapper/300:10:283
26490911510,2phc2sys0-21swapper/320:05:223
2649091150,6phc2sys0-21swapper/300:29:543
2649091150,4phc2sys0-21swapper/320:15:193
2649091150,3phc2sys0-21swapper/300:37:253
2649091150,2phc2sys0-21swapper/322:55:413
2649091150,2phc2sys0-21swapper/322:22:043
2649091150,2phc2sys0-21swapper/321:31:583
150390699152,8cyclictest0-21swapper/222:10:002
1503906991513,1cyclictest0-21swapper/220:45:022
1503906991513,1cyclictest0-21swapper/200:15:012
1503906991512,1cyclictest0-21swapper/222:20:022
1503906991512,1cyclictest0-21swapper/222:01:392
1503906991512,1cyclictest0-21swapper/221:15:292
1503906991512,1cyclictest0-21swapper/221:05:262
1503906991512,1cyclictest0-21swapper/221:05:002
1503906991512,1cyclictest0-21swapper/220:55:012
1503906991512,1cyclictest0-21swapper/220:25:002
1503906991512,1cyclictest0-21swapper/219:55:122
1503906991512,1cyclictest0-21swapper/219:25:322
150390599155,5cyclictest0-21swapper/123:22:141
150390599154,5cyclictest1915611-21seq23:57:441
150390599152,3cyclictest0-21swapper/121:25:021
1503905991513,1cyclictest1657179-21diskmemload22:10:311
1503905991512,2cyclictest3851704-21mta-sts-daemon19:20:261
1503905991512,2cyclictest3851702-21mta-sts-daemon22:15:481
1503905991512,2cyclictest3851702-21mta-sts-daemon00:25:341
1503905991512,2cyclictest3827634-1atopacctd23:49:051
1503905991512,2cyclictest1885861-21systemd-run23:40:011
1503905991511,3cyclictest3851704-21mta-sts-daemon21:27:341
1503905991511,3cyclictest1936645-21kthreadcore00:10:281
1503905991511,3cyclictest1647554-21kthreadcore21:00:271
1503905991511,3cyclictest1628833-21kthreadcore20:45:291
1503905991511,3cyclictest1610342-21kthreadcore20:30:281
1503905991511,3cyclictest1598452-21kthreadcore20:20:291
150390599150,6cyclictest1834366-21kthreadcore23:05:291
150390599150,3cyclictest0-21swapper/100:21:081
150390599150,3cyclictest0-21swapper/100:08:331
1503904991512,2cyclictest1512428-21gltestperf19:15:030
2649091140,3phc2sys0-21swapper/323:17:283
2649091140,2phc2sys0-21swapper/322:47:063
2649091140,2phc2sys0-21swapper/321:18:483
2649091140,1phc2sys0-21swapper/319:59:363
17394692141,6sleep30-21swapper/322:00:443
1503906991412,1cyclictest0-21swapper/221:45:292
1503906991411,1cyclictest0-21swapper/223:50:332
1503906991411,1cyclictest0-21swapper/223:05:002
1503906991411,1cyclictest0-21swapper/221:40:282
1503906991411,1cyclictest0-21swapper/221:30:252
1503906991411,1cyclictest0-21swapper/220:15:012
1503906991411,1cyclictest0-21swapper/220:15:002
1503906991411,1cyclictest0-21swapper/200:25:352
1503906991411,1cyclictest0-21swapper/200:15:252
1503906991410,2cyclictest0-21swapper/220:30:282
150390599145,7cyclictest1515993-21tr19:15:291
1503905991412,1cyclictest1551055-21aten2.4-expect19:45:221
1503905991411,2cyclictest3851704-21mta-sts-daemon22:30:001
1503905991411,2cyclictest1901831-21cpuspeed_turbos23:50:221
1503905991411,2cyclictest1625878-21latency_hist20:45:021
1503905991411,2cyclictest1607012-21latency_hist20:30:011
1503905991411,2cyclictest1549573-21needreboot19:40:271
1503905991411,2cyclictest0-21swapper/122:40:011
1503905991410,3cyclictest1636593-21kthreadcore20:50:291
150390499142,3cyclictest1503908-21systemd-run19:10:010
2649091133,3phc2sys0-21swapper/319:40:253
2649091130,2phc2sys0-21swapper/323:10:023
2649091130,2phc2sys0-21swapper/323:05:043
2649091130,2phc2sys0-21swapper/322:52:273
2649091130,2phc2sys0-21swapper/321:54:553
2649091130,2phc2sys0-21swapper/300:01:443
150390699131,5cyclictest0-21swapper/219:35:022
1503906991311,1cyclictest0-21swapper/223:15:012
1503906991311,1cyclictest0-21swapper/222:50:222
1503906991311,1cyclictest0-21swapper/220:45:232
1503906991311,1cyclictest0-21swapper/220:25:192
1503906991311,1cyclictest0-21swapper/219:45:232
1503906991310,1cyclictest0-21swapper/223:40:222
1503906991310,1cyclictest0-21swapper/220:05:232
150390599137,1cyclictest501rcuop/221:15:211
1503905991310,2cyclictest3851703-21mta-sts-daemon20:00:271
1503905991310,2cyclictest1583471-21kthreadcore20:10:281
1503905991310,2cyclictest1583471-21kthreadcore20:10:281
1503905991310,2cyclictest1580356-21kthreadcore20:05:301
2649091121,3phc2sys0-21swapper/319:20:203
2649091121,2phc2sys0-21swapper/322:30:223
2649091120,2phc2sys0-21swapper/323:03:493
2649091120,2phc2sys0-21swapper/321:55:233
2649091120,2phc2sys0-21swapper/320:53:033
2649091120,2phc2sys0-21swapper/320:45:303
2649091120,2phc2sys0-21swapper/320:29:383
2649091120,2phc2sys0-21swapper/319:40:013
2649091120,2phc2sys0-21swapper/319:30:233
2649091120,2phc2sys0-21swapper/319:18:413
150390699129,1cyclictest0-21swapper/219:50:222
150390699129,1cyclictest0-21swapper/219:40:202
150390699129,1cyclictest0-21swapper/219:35:292
150390699129,1cyclictest0-21swapper/219:20:242
1503906991210,1cyclictest0-21swapper/220:00:282
150390599126,5cyclictest1794230-21kworker/u16:3-events_unbound23:40:031
2649091110,3phc2sys0-21swapper/323:55:333
2649091110,2phc2sys0-21swapper/323:52:073
2649091110,2phc2sys0-21swapper/323:45:513
2649091110,2phc2sys0-21swapper/322:35:113
2649091110,2phc2sys0-21swapper/321:20:323
2649091110,1phc2sys0-21swapper/323:26:273
2649091110,1phc2sys0-21swapper/322:06:343
2649091110,1phc2sys0-21swapper/321:02:133
2649091110,1phc2sys0-21swapper/319:50:383
2649091110,1phc2sys0-21swapper/319:14:443
150390699119,1cyclictest0-21swapper/219:10:012
150390599114,5cyclictest1290-21dbus-daemon19:10:021
2649091102,2phc2sys0-21swapper/323:41:143
2649091101,2phc2sys0-21swapper/320:55:233
2649091101,2phc2sys0-21swapper/320:35:293
2649091101,2phc2sys0-21swapper/320:00:203
2649091101,2phc2sys0-21swapper/319:05:273
2649091101,2phc2sys0-21swapper/300:19:333
2649091100,2phc2sys0-21swapper/320:20:203
2649091100,2phc2sys0-21swapper/320:10:343
2649091100,2phc2sys0-21swapper/320:10:343
2649091100,2phc2sys0-21swapper/300:07:233
2649091100,1phc2sys0-21swapper/323:24:593
264909191,3phc2sys0-21swapper/320:40:243
264909190,3phc2sys0-21swapper/321:45:203
264909190,2phc2sys0-21swapper/322:40:203
264909190,2phc2sys0-21swapper/322:10:273
264909190,2phc2sys0-21swapper/321:10:063
264909190,2phc2sys0-21swapper/320:30:273
264909190,2phc2sys0-21swapper/319:45:263
264909190,1phc2sys0-21swapper/321:05:093
264909180,2phc2sys0-21swapper/319:25:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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