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2026-04-17 - 00:09
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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 Thu Apr 16, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241851321010,1sleep20-21swapper/211:55:572
235279521010,1sleep10-21swapper/111:13:111
22854762850,2sleep30-21swapper/310:28:563
23298912750,1sleep02329889-21ssh10:56:380
2012399992521,2cyclictest2293806-21grep10:35:020
2649091243,3phc2sys0-21swapper/311:45:203
2012401992415,1cyclictest0-21swapper/211:05:012
2012399992421,2cyclictest2405836-21systemd11:50:000
2012399992415,4cyclictest2390639-21runrttasks11:39:280
201240199232,9cyclictest0-21swapper/207:10:012
201239999239,6cyclictest2308613-21ssh10:45:010
2012399992320,2cyclictest3851704-21mta-sts-daemon10:40:000
2012399992314,5cyclictest2418014-21kthreadcore11:55:560
383433398220,6rtkit-daemon171ktimers/008:26:250
2012401992219,1cyclictest0-21swapper/210:30:002
2012399992219,2cyclictest2473374-21/usr/sbin/munin12:35:000
2012399992219,2cyclictest2323544-21grep10:55:000
2012400992115,2cyclictest134050irq/121-eno112:15:011
2012399992118,2cyclictest2058834-21sh07:45:000
2012399992118,2cyclictest2018709-21/usr/sbin/munin07:15:010
2012399992114,6cyclictest2348578-21kthreadcore11:10:560
2012399992113,6cyclictest0-21swapper/012:15:020
2012399992110,6cyclictest0-21swapper/011:20:590
383433398200,4rtkit-daemon3827634-1atopacctd11:49:321
383433398200,3rtkit-daemon3851703-21mta-sts-daemon09:22:051
2012401992018,1cyclictest0-21swapper/209:45:022
2012401992017,1cyclictest0-21swapper/209:10:012
2012400992017,2cyclictest2212021-21fschecks_time09:40:511
2012400992017,2cyclictest0-21swapper/108:20:001
2012400992012,3cyclictest2283792-21latency10:25:561
2012400992011,4cyclictest0-21swapper/111:00:571
201239999209,6cyclictest0-21swapper/010:15:010
2012399992017,2cyclictest2278365-21idleruntime-cro10:25:000
2012399992016,3cyclictest2195553-21systemd-run09:30:000
2012399992012,7cyclictest0-21swapper/009:25:000
2012399992011,5cyclictest2198066-21kthreadcore09:30:540
2649191190,1ptp4l0-21swapper/310:55:533
2012401991916,1cyclictest0-21swapper/212:20:012
2012401991916,1cyclictest0-21swapper/210:50:492
2012401991916,1cyclictest0-21swapper/210:50:012
2012401991916,1cyclictest0-21swapper/210:50:012
2012401991916,1cyclictest0-21swapper/209:00:012
2012401991910,3cyclictest0-21swapper/211:45:482
2012400991917,1cyclictest2473357-21grep12:35:001
2012400991916,2cyclictest2065038-21sh07:50:001
2012400991916,2cyclictest2018595-21idleruntime-cro07:15:001
2012400991916,2cyclictest0-21swapper/108:00:001
2012400991915,2cyclictest2421051-21systemd-run12:00:021
2012400991913,2cyclictest134050irq/121-eno110:22:431
2012400991913,2cyclictest134050irq/121-eno109:50:001
2012400991913,2cyclictest0-21swapper/112:05:021
2012400991910,4cyclictest0-21swapper/110:35:591
201239999199,5cyclictest0-21swapper/009:45:470
2012399991917,1cyclictest2233622-21/usr/sbin/munin09:55:010
2012399991916,2cyclictest1290-21dbus-daemon09:00:010
2012399991912,6cyclictest2251720-21kthreadcore10:05:570
2649091180,2phc2sys0-21swapper/311:12:103
2649091180,2phc2sys0-21swapper/309:24:283
2649091180,2phc2sys0-21swapper/308:31:013
2012401991815,1cyclictest0-21swapper/211:00:002
2012401991815,1cyclictest0-21swapper/209:35:002
2012401991815,1cyclictest0-21swapper/208:35:542
2012401991814,2cyclictest0-21swapper/211:25:552
2012400991815,2cyclictest2458381-21cron12:25:001
2012400991815,2cyclictest2317344-21cut10:50:531
2012400991815,2cyclictest2233472-21turbostat.cron09:55:001
2012400991815,2cyclictest2046233-21systemd-run07:35:011
2012400991815,2cyclictest1326-21systemd-logind11:00:001
2012400991813,1cyclictest383433398rtkit-daemon11:15:171
2012400991812,4cyclictest0-21swapper/109:15:511
201239999189,5cyclictest2393205-21kthreadcore11:40:550
201239999189,4cyclictest3851704-21mta-sts-daemon12:24:290
2012399991815,2cyclictest2413375-21/usr/sbin/munin11:55:000
2012399991815,2cyclictest2218580-21apt-key09:45:010
2012399991815,2cyclictest2210765-21turbostat09:40:000
2012399991811,6cyclictest2459910-21grep12:25:520
2012399991811,4cyclictest2077960-21tail08:00:470
2649091170,1phc2sys0-21swapper/312:17:193
2012401991715,1cyclictest0-21swapper/212:10:012
2012401991714,1cyclictest0-21swapper/212:30:002
2012401991714,1cyclictest0-21swapper/211:55:002
201240099177,3cyclictest2259386-21kthreadcore10:10:561
2012400991714,2cyclictest3834332-21rtkit-daemon08:47:211
2012400991714,2cyclictest2479233-21head12:35:581
2012400991714,2cyclictest2391542-21aten2.4-expect11:40:501
2012400991714,2cyclictest2204961-21cut09:35:551
2012400991714,2cyclictest2089337-21systemctl08:06:011
2012400991714,2cyclictest1290-21dbus-daemon07:40:001
2012400991714,2cyclictest0-21swapper/109:05:011
2012400991713,3cyclictest2346185-21latency_hist11:10:011
2012400991710,3cyclictest2436038-21latency_hist12:10:021
201239999179,2cyclictest0-21swapper/010:00:550
201239999178,5cyclictest2018914-21kworker/u16:1-events_power_efficient11:30:500
201239999177,5cyclictest0-21swapper/011:15:480
201239999172,5cyclictest491rcuog/212:00:260
2012399991715,1cyclictest2133849-21latency_hist08:45:000
2012399991714,2cyclictest2316232-21systemd-run10:50:020
2012399991714,2cyclictest2316232-21systemd-run10:50:020
2012399991714,2cyclictest2146349-21cut08:55:010
2012399991714,2cyclictest2027278-21sendmail07:20:000
2012399991711,5cyclictest2481172-21basename12:40:000
2012399991710,3cyclictest1296-21polkitd09:05:020
383433398160,7rtkit-daemon3851704-21mta-sts-daemon12:08:020
2649091160,2phc2sys0-21swapper/309:56:423
201240199161,4cyclictest0-21swapper/209:50:452
2012401991614,1cyclictest0-21swapper/211:06:022
2012401991614,1cyclictest0-21swapper/210:05:512
2012401991614,1cyclictest0-21swapper/210:05:022
2012401991614,1cyclictest0-21swapper/209:20:552
2012401991614,1cyclictest0-21swapper/207:45:022
2012401991613,1cyclictest0-21swapper/212:30:302
2012401991613,1cyclictest0-21swapper/212:20:562
2012401991613,1cyclictest0-21swapper/212:15:012
2012401991613,1cyclictest0-21swapper/211:35:572
2012401991613,1cyclictest0-21swapper/211:20:012
2012401991613,1cyclictest0-21swapper/210:36:002
2012401991613,1cyclictest0-21swapper/208:15:542
2012401991613,1cyclictest0-21swapper/208:00:012
201240099167,4cyclictest1290-21dbus-daemon08:35:011
201240099161,7cyclictest2466091-21unin-run12:30:011
2012400991613,2cyclictest2383037-21sshd11:34:001
2012400991613,2cyclictest2166588-21fschecks_time09:10:521
2012400991613,2cyclictest2166588-21fschecks_time09:10:521
2012400991613,2cyclictest2165560-21cut09:10:021
2012400991613,2cyclictest2058624-21apt-key07:45:001
2012400991613,2cyclictest2018700-21munin-node07:28:021
2012400991613,2cyclictest2012397-21cyclictest09:29:051
2012400991613,2cyclictest0-21swapper/110:50:011
2012400991613,2cyclictest0-21swapper/110:50:011
2012400991612,3cyclictest2152686-21unin-run09:00:011
2012400991612,2cyclictest2203449-21grep09:35:011
201239999169,4cyclictest3824565-21in:imuxsock11:08:000
2012399991613,2cyclictest2180600-21/usr/sbin/munin09:20:010
2012399991613,2cyclictest2140230-21munin-plugin-st08:50:010
2012399991613,2cyclictest2108871-21dump-pmu-power08:25:000
2012399991613,2cyclictest2045206-21ptp4l-jitter07:30:580
2012399991613,2cyclictest1-21systemd07:20:220
2649091154,2phc2sys0-21swapper/310:47:133
2649091154,2phc2sys0-21swapper/310:47:133
2649091150,2phc2sys0-21swapper/312:06:043
201240199152,7cyclictest0-21swapper/208:10:012
201240199151,6cyclictest0-21swapper/210:10:472
2012401991513,1cyclictest0-21swapper/210:45:022
201240199151,2cyclictest0-21swapper/208:50:012
2012401991512,1cyclictest0-21swapper/209:12:052
2012401991512,1cyclictest0-21swapper/209:12:052
2012401991512,1cyclictest0-21swapper/208:15:002
2012401991512,1cyclictest0-21swapper/207:10:522
201240199150,13cyclictest0-21swapper/211:20:492
201240099159,5cyclictest3851705-21mta-sts-daemon11:26:101
201240099157,7cyclictest3841051-21wpa_supplicant08:13:471
201240099157,3cyclictest0-21swapper/110:00:481
201240099156,4cyclictest3851702-21mta-sts-daemon11:21:011
2012400991513,1cyclictest3851702-21mta-sts-daemon11:51:021
2012400991512,2cyclictest3841051-21wpa_supplicant10:08:121
2012400991512,2cyclictest2291947-21mailstats10:31:011
2012400991512,2cyclictest2105869-21kthreadcore08:20:561
2012400991512,2cyclictest2066088-21cut07:50:511
2012400991512,2cyclictest2066088-21cut07:50:511
2012400991512,2cyclictest0-21swapper/111:40:021
2012400991512,2cyclictest0-21swapper/110:20:021
2012400991511,3cyclictest1326-21systemd-logind07:20:021
201239999159,5cyclictest0-21swapper/008:10:510
201239999155,2cyclictest1290-21dbus-daemon07:10:010
201239999154,5cyclictest0-21swapper/012:15:540
201239999154,4cyclictest2066370-21irqcore07:50:530
201239999154,4cyclictest2066370-21irqcore07:50:530
2012399991512,2cyclictest2239576-21grep09:56:010
2012399991512,2cyclictest2171032-21proc_pri09:10:590
2012399991512,2cyclictest2171032-21proc_pri09:10:590
2012399991512,2cyclictest2123027-21sort08:35:540
2012399991512,2cyclictest2115719-21cpuspeed_turbos08:30:500
2012399991512,2cyclictest2077796-21systemd-run08:00:010
2012399991512,2cyclictest2039876-21cut07:30:020
2012399991511,3cyclictest2332722-21irqrtprio11:00:550
2012399991511,3cyclictest2018914-21kworker/u16:1+nfsiod10:17:440
201239999150,14cyclictest2052270-21cat07:40:000
2649091140,2phc2sys0-21swapper/309:48:203
2649091140,2phc2sys0-21swapper/307:05:093
2649091140,1phc2sys0-21swapper/312:37:243
2649091140,1phc2sys0-21swapper/312:11:583
201240199148,4cyclictest2292338-21chrt10:31:032
201240199141,8cyclictest0-21swapper/207:20:012
2012401991412,1cyclictest0-21swapper/209:15:562
2012401991412,1cyclictest0-21swapper/207:25:482
2012401991411,2cyclictest0-21swapper/209:47:512
2012401991411,1cyclictest0-21swapper/212:35:552
2012401991411,1cyclictest0-21swapper/212:03:442
2012401991411,1cyclictest0-21swapper/211:40:432
2012401991411,1cyclictest0-21swapper/211:30:472
2012401991411,1cyclictest0-21swapper/210:15:432
2012401991411,1cyclictest0-21swapper/209:25:312
2012401991410,2cyclictest0-21swapper/208:25:542
201240099146,6cyclictest0-21swapper/112:15:591
2012400991411,2cyclictest3851705-21mta-sts-daemon09:55:021
2012400991411,2cyclictest3851703-21mta-sts-daemon10:40:501
2012400991411,2cyclictest2126302-21kthreadcore08:35:561
2012400991411,2cyclictest1290-21dbus-daemon08:55:011
2012400991411,2cyclictest0-21swapper/108:30:001
2012400991410,3cyclictest2027632-21acpi07:20:461
2012399991412,1cyclictest3851703-21mta-sts-daemon08:05:500
2012399991411,2cyclictest2368936-21/usr/sbin/munin11:26:000
2012399991411,2cyclictest2282279-21kthreadcore10:25:550
2012399991411,2cyclictest2160206-21head09:05:520
2012399991411,2cyclictest2097563-21sort08:15:530
2649091130,3phc2sys0-21swapper/308:15:553
2649091130,2phc2sys0-21swapper/311:50:543
2649091130,2phc2sys0-21swapper/311:20:483
2649091130,2phc2sys0-21swapper/311:05:013
2649091130,2phc2sys0-21swapper/310:54:563
2649091130,2phc2sys0-21swapper/310:44:453
2649091130,2phc2sys0-21swapper/310:15:583
2649091130,2phc2sys0-21swapper/310:12:513
2649091130,2phc2sys0-21swapper/308:50:293
2649091130,2phc2sys0-21swapper/308:43:243
2649091130,1phc2sys0-21swapper/309:36:503
201240199131,5cyclictest0-21swapper/210:20:472
201240199131,4cyclictest0-21swapper/208:40:482
201240199131,3cyclictest0-21swapper/207:50:012
2012401991311,1cyclictest0-21swapper/211:10:492
2012401991311,1cyclictest0-21swapper/208:20:492
2012401991311,1cyclictest0-21swapper/208:00:542
2012401991311,1cyclictest0-21swapper/207:50:552
2012401991311,1cyclictest0-21swapper/207:50:552
2012401991310,1cyclictest0-21swapper/209:35:562
2012401991310,1cyclictest0-21swapper/207:35:492
2012401991310,1cyclictest0-21swapper/207:30:542
2012400991310,2cyclictest3851703-21mta-sts-daemon08:03:251
2012399991310,2cyclictest2059736-21fschecks_time07:45:510
2649091123,2phc2sys0-21swapper/307:20:523
2649091122,3phc2sys0-21swapper/309:40:553
2649091121,2phc2sys0-21swapper/307:45:013
2649091120,2phc2sys0-21swapper/311:57:593
2649091120,2phc2sys0-21swapper/311:42:443
2649091120,2phc2sys0-21swapper/310:33:263
2649091120,2phc2sys0-21swapper/310:02:273
2649091120,1phc2sys0-21swapper/309:19:083
2649091120,1phc2sys0-21swapper/307:56:553
22265292120,2sleep30-21swapper/309:50:403
201240199129,1cyclictest0-21swapper/208:50:562
201240199129,1cyclictest0-21swapper/208:30:552
2012401991210,1cyclictest0-21swapper/209:00:522
2012401991210,1cyclictest0-21swapper/207:20:512
201240099125,5cyclictest2128274-21cpuspeed_turbos08:40:491
2649091111,2phc2sys0-21swapper/308:30:013
2649091110,3phc2sys0-21swapper/308:00:133
2649091110,2phc2sys0-21swapper/311:36:553
2649091110,2phc2sys0-21swapper/311:29:423
2649091110,2phc2sys0-21swapper/310:08:363
2649091110,2phc2sys0-21swapper/309:25:363
2649091110,1phc2sys0-21swapper/309:34:323
201240199118,1cyclictest0-21swapper/209:55:472
2649091101,3phc2sys0-21swapper/310:20:463
2649091101,2phc2sys0-21swapper/312:34:233
2649091101,2phc2sys0-21swapper/309:13:253
2649091101,2phc2sys0-21swapper/309:13:253
2649091101,2phc2sys0-21swapper/309:00:553
2649091101,2phc2sys0-21swapper/308:23:363
2649091101,2phc2sys0-21swapper/307:45:493
2649091100,2phc2sys0-21swapper/312:27:173
2649091100,2phc2sys0-21swapper/312:20:483
2649091100,2phc2sys0-21swapper/312:04:493
2649091100,2phc2sys0-21swapper/310:39:563
2649091100,2phc2sys0-21swapper/309:05:563
2649091100,2phc2sys0-21swapper/308:05:493
2649091100,2phc2sys0-21swapper/307:10:463
201240099106,1cyclictest17350irq/127-ahci[0000:00:17.0]07:10:011
264909191,2phc2sys0-21swapper/311:30:503
264909190,2phc2sys0-21swapper/311:15:033
264909190,2phc2sys0-21swapper/311:05:053
264909190,2phc2sys0-21swapper/308:55:503
264909190,2phc2sys0-21swapper/308:50:013
264909190,2phc2sys0-21swapper/308:10:503
264909190,2phc2sys0-21swapper/307:35:513
264909190,2phc2sys0-21swapper/307:34:263
264909190,2phc2sys0-21swapper/307:25:263
264909190,2phc2sys0-21swapper/307:19:113
264909181,2phc2sys0-21swapper/308:35:343
264909180,2phc2sys0-21swapper/307:50:503
264909180,2phc2sys0-21swapper/307:50:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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