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2026-01-09 - 14:49
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackeslot6.osadl.org (updated Fri Jan 09, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212823999130119,8cyclictest2222096-40mandb00:00:011
21282359910192,6cyclictest2157417-21latency_hist20:40:010
21282399910077,20cyclictest2170151-21latency_hist21:20:011
2128239999686,7cyclictest2191349-21latency_hist22:25:011
2128239999470,21cyclictest2171735-21latency_hist21:25:021
2128235999484,7cyclictest2197714-21latency_hist22:45:000
2128235999281,9cyclictest2186327-21apt-get22:10:000
2128239998782,3cyclictest2210677-21kworker/u8:1+flush-179:023:35:241
2128235998776,8cyclictest2213875-21latency_hist23:35:010
2128239998273,7cyclictest2181271-21latency_hist21:55:001
2128235998278,3cyclictest2210677-21kworker/u8:1+flush-179:023:45:230
2128235998278,3cyclictest2210677-21kworker/u8:1+flush-179:023:45:230
2128235998250,1cyclictest0-21swapper/019:58:580
2128239997869,7cyclictest2182863-21apt-get22:00:011
2128235997669,5cyclictest2184763-21kworker/u8:3+events_unbound22:15:250
2128235997567,6cyclictest2225370-21kworker/u8:1+events_unbound00:25:010
2128235997468,4cyclictest2213861-21kworker/u8:0+flush-179:023:40:210
2128239997241,22cyclictest2128234-21cyclictest22:40:581
2128235997267,3cyclictest2215516-21kworker/u8:2+events_unbound23:50:020
2128235997267,3cyclictest2215516-21kworker/u8:2+events_unbound23:50:020
2128239997055,10cyclictest2149376-21kworker/u8:1+flush-179:020:55:231
2128235996961,6cyclictest2159008-21latency_hist20:45:000
2128239996861,5cyclictest2144653-21latency_hist20:00:011
2128239996859,6cyclictest2194522-21latency_hist22:35:011
2128239996857,8cyclictest2201119-21/usr/sbin/munin22:55:211
2128235996861,5cyclictest2162150-21kworker/u8:2+flush-179:021:50:220
2128235996761,4cyclictest2179721-21kworker/u8:1+flush-179:022:35:160
2128235996761,4cyclictest2179721-21kworker/u8:1+flush-179:022:35:160
2128235996660,4cyclictest2149376-21kworker/u8:1+events_unbound21:00:220
2128235996660,4cyclictest2149376-21kworker/u8:1+events_unbound21:00:220
2128235996660,4cyclictest2143268-21kworker/u8:0+flush-179:020:15:170
2128239996556,6cyclictest2152591-21latency_hist20:25:001
2128239996555,7cyclictest2178102-21latency_hist21:45:011
2128239996453,8cyclictest2184763-21kworker/u8:3+events_unbound22:15:011
2128239996453,8cyclictest2184763-21kworker/u8:3+events_unbound22:15:001
2128235996459,3cyclictest2130689-21kworker/u8:1+flush-179:019:17:540
2128235996458,4cyclictest2225370-21kworker/u8:1+flush-179:000:15:180
2128235996457,4cyclictest2203452-21kworker/u8:1+flush-179:023:05:180
2128244996360,2cyclictest0-21swapper/220:01:582
2128235996358,3cyclictest2115790-21kworker/u8:0+flush-179:019:20:140
2128235996257,3cyclictest2145692-21kworker/u8:1+events_unbound20:00:230
2128235996251,9cyclictest2209368-21apt-get23:20:090
2128235996153,6cyclictest266-21systemd-journal20:50:000
2128239996051,7cyclictest2149397-21latency_hist20:15:011
2128239996051,7cyclictest2149397-21latency_hist20:15:011
2128235996051,7cyclictest2149376-21kworker/u8:1+flush-179:021:00:010
212823599600,58cyclictest2233332-21munin-run00:35:010
2128235995952,5cyclictest2203452-21kworker/u8:1+flush-179:023:15:000
2128239995852,4cyclictest2149376-21kworker/u8:1+events_unbound20:40:231
2128235995852,4cyclictest2199342-21kworker/u8:3+flush-179:023:00:150
2128235995852,4cyclictest2199342-21kworker/u8:3+flush-179:023:00:150
2128235995852,4cyclictest2138557-21kworker/u8:2+flush-179:019:45:160
2128235995852,4cyclictest2138557-21kworker/u8:2+flush-179:019:45:160
2128235995850,5cyclictest2115790-21kworker/u8:0+flush-179:019:25:140
2128235995752,4cyclictest2210735-21kworker/u8:2+flush-179:023:30:010
2128235995750,5cyclictest2162150-21kworker/u8:2+flush-179:021:20:240
2128239995646,7cyclictest2132978-21latency_hist19:25:021
2128239995641,13cyclictest2149376-21kworker/u8:1+flush-179:020:25:241
2128235995650,4cyclictest2115790-21kworker/u8:0+flush-179:019:35:230
2128235995550,4cyclictest2128206-21kworker/u8:2+events_unbound19:10:230
2128235995549,5cyclictest2130689-21kworker/u8:1+flush-179:019:40:200
2128248995452,1cyclictest0-21swapper/300:05:003
2128235995449,4cyclictest2220483-21kworker/u8:0+events_unbound00:04:000
2128235995448,4cyclictest2162150-21kworker/u8:2+flush-179:021:15:180
2128235995448,4cyclictest2115790-21kworker/u8:0+flush-179:019:30:200
2128235995444,8cyclictest266-21systemd-journal00:28:510
2128239995334,17cyclictest714-21Xorg00:14:591
212823999530,49cyclictest2199553-21apt-get22:50:131
2128235995348,4cyclictest2222151-21kworker/u8:3+flush-179:000:10:000
2128235995346,5cyclictest2152626-21kworker/u8:3+events_unbound20:25:220
2128239995242,7cyclictest2184727-21latency_hist22:05:011
2128239995241,8cyclictest2218651-21latency_hist23:50:011
2128239995241,8cyclictest2218651-21latency_hist23:50:011
2128235995241,9cyclictest2176771-21apt-get21:40:100
2128248995149,1cyclictest0-21swapper/323:27:593
212823999510,1cyclictest0-21swapper/121:07:591
2128235995146,4cyclictest2213861-21kworker/u8:0+flush-179:023:40:000
2128235995143,7cyclictest2162150-21kworker/u8:2+flush-179:021:10:190
2128239995017,19cyclictest0-21swapper/119:27:441
2128235995041,7cyclictest2179721-21kworker/u8:1+flush-179:022:50:000
2128244994946,2cyclictest0-21swapper/223:09:592
2128244994919,2cyclictest0-21swapper/219:58:582
2128239994945,2cyclictest2168541-21latency_hist21:15:011
2128239994943,5cyclictest2115790-21kworker/u8:0+flush-179:019:40:001
2128239994935,12cyclictest2142785-21apt-get19:54:591
2128239994924,22cyclictest0-21swapper/123:25:141
2128235994941,4cyclictest2171720-21kworker/u8:3+events_unbound21:35:230
4577091480,13ptp4l61490irq/134-eno1-TxRx-019:10:003
2128239994843,4cyclictest2225370-21kworker/u8:1+flush-179:000:20:231
2128239994815,18cyclictest0-21swapper/122:15:131
2128235994840,6cyclictest2139570-21kworker/u8:3+flush-179:019:50:210
2128235994839,7cyclictest2128151-21latency_hist19:10:020
2128239994738,6cyclictest2143268-21kworker/u8:0+flush-179:020:30:251
2128235994744,2cyclictest2200864-21kworker/0:0-cgroup_destroy22:55:000
2128235994739,6cyclictest2143268-21kworker/u8:0+events_unbound20:50:150
212823999468,25cyclictest714-21Xorg00:06:001
2128239994634,10cyclictest2194778-21apt-get22:35:111
2128239994634,10cyclictest2194778-21apt-get22:35:111
2128235994641,4cyclictest2215516-21kworker/u8:2+flush-179:023:55:220
2128235994641,4cyclictest2171720-21kworker/u8:3+flush-179:021:30:210
2128235994640,5cyclictest2182336-21kworker/u8:0+events_unbound22:25:230
2128235994640,4cyclictest2179721-21kworker/u8:1+flush-179:021:55:210
2128235994638,5cyclictest2202476-21latency_hist23:00:010
2128235994638,5cyclictest2199342-21kworker/u8:3+flush-179:023:15:150
2128239994513,18cyclictest0-21swapper/120:10:011
212823999450,44cyclictest0-21swapper/120:15:131
212823999450,29cyclictest2203366-21memory23:00:171
212823999450,29cyclictest2203366-21memory23:00:171
212823999440,42cyclictest714-21Xorg21:48:591
212823999440,30cyclictest0-21swapper/123:05:221
212823999440,29cyclictest2227954-21ntp_offset00:15:221
2128239994335,6cyclictest2160592-21latency_hist20:50:011
2128239994324,17cyclictest2231719-21perf00:34:561
2128239994319,22cyclictest2157423-21awk20:39:591
212823999430,28cyclictest2199037-21sed22:45:251
2128235994334,5cyclictest0-21swapper/021:07:000
212823599430,41cyclictest2178115-21turbostat21:49:560
2128239994237,3cyclictest2139646-21latency_hist19:45:011
2128239994235,5cyclictest2209107-21turbostat23:24:551
2128235994235,5cyclictest2182336-21kworker/u8:0+flush-179:022:20:250
2128239994134,5cyclictest2165371-21latency_hist21:05:011
2128239994134,5cyclictest2165371-21latency_hist21:05:001
2128239994133,6cyclictest2115790-21kworker/u8:0+events_unbound19:15:011
2128239994130,9cyclictest2160846-21apt-get20:50:121
2128239994127,11cyclictest266-21systemd-journal21:29:591
2128235994135,4cyclictest2225344-21turbostat00:14:560
2128235994133,6cyclictest2222151-21kworker/u8:3+flush-179:000:35:200
2128235994129,8cyclictest0-21swapper/020:05:590
2128239994031,6cyclictest0-21swapper/119:18:581
212823999402,27cyclictest2216535-21open_files23:40:221
212823999401,37cyclictest714-21Xorg23:11:591
2128235994037,2cyclictest2182336-21kworker/u8:0+flush-179:022:30:230
212824899390,37cyclictest2146241-21turbostat20:05:013
2128239993933,4cyclictest266-21systemd-journal20:02:461
2128235993933,4cyclictest714-21Xorg20:13:580
2128235993933,4cyclictest714-21Xorg20:13:580
2128235993932,5cyclictest2149376-21kworker/u8:1+events_unbound20:30:210
2128244993835,2cyclictest0-21swapper/200:12:592
212824499380,36cyclictest0-21swapper/222:51:592
212823999381,35cyclictest2192932-21cron22:30:001
212823999380,2cyclictest714-21Xorg21:30:591
2128235993835,2cyclictest714-21Xorg21:27:590
2128244993734,2cyclictest0-21swapper/200:30:582
212824499370,35cyclictest0-21swapper/222:32:592
212823999370,34cyclictest2223886-21latency_hist00:05:001
212824899360,35cyclictest0-21swapper/320:49:543
212824899360,35cyclictest0-21swapper/319:40:003
2128244993634,1cyclictest0-21swapper/221:50:002
2128244993633,2cyclictest0-21swapper/221:06:592
2128244993633,2cyclictest0-21swapper/200:36:002
212824499360,1cyclictest0-21swapper/219:50:592
2128235993630,5cyclictest2184763-21kworker/u8:3+flush-179:022:10:180
2128235993630,5cyclictest2184763-21kworker/u8:3+flush-179:022:10:180
2128248993533,1cyclictest0-21swapper/322:30:593
2128248993533,1cyclictest0-21swapper/320:53:003
2128248993533,1cyclictest0-21swapper/300:25:583
2128244993532,2cyclictest0-21swapper/222:08:592
2128239993532,2cyclictest0-21swapper/122:07:591
2128239993515,18cyclictest0-21swapper/119:45:161
2128239993515,18cyclictest0-21swapper/119:45:151
212823999351,29cyclictest0-21swapper/123:15:121
2128235993531,3cyclictest2149376-21kworker/u8:1+flush-179:020:20:200
2128235993527,6cyclictest2182908-21http22:00:010
212823999349,23cyclictest714-21Xorg21:39:591
2128239993416,15cyclictest0-21swapper/123:35:011
2128248993331,1cyclictest0-21swapper/300:23:593
2128248993330,2cyclictest0-21swapper/321:10:003
2128244993330,2cyclictest0-21swapper/221:01:592
2128244993330,2cyclictest0-21swapper/221:01:582
212823999331,3cyclictest2136153-21munin-run19:34:591
2128244993229,2cyclictest0-21swapper/223:41:592
2128244993229,2cyclictest0-21swapper/220:54:592
2128248993129,1cyclictest0-21swapper/323:35:593
2128248993129,1cyclictest0-21swapper/323:00:593
2128248993129,1cyclictest0-21swapper/323:00:593
2128248993129,1cyclictest0-21swapper/322:42:593
212824899311,27cyclictest4578291phc2sys00:10:143
212824899310,30cyclictest0-21swapper/323:56:593
212823999311,26cyclictest908065-21snmpd23:50:121
212823999311,26cyclictest908065-21snmpd23:50:121
212824899300,28cyclictest0-21swapper/323:20:113
2128244993027,2cyclictest0-21swapper/222:36:592
2128244993027,2cyclictest0-21swapper/222:36:592
2128244993027,2cyclictest0-21swapper/222:15:132
2128244993027,2cyclictest0-21swapper/219:40:032
2128244993027,2cyclictest0-21swapper/219:26:592
2128244993027,2cyclictest0-21swapper/200:20:122
212824499300,2cyclictest0-21swapper/221:25:122
2128239993027,2cyclictest0-21swapper/100:25:131
2128248992927,1cyclictest0-21swapper/322:45:143
2128248992926,2cyclictest0-21swapper/321:20:133
2128248992926,2cyclictest0-21swapper/319:10:123
212824899290,28cyclictest0-21swapper/320:05:133
212824899290,27cyclictest0-21swapper/323:10:123
212824899290,27cyclictest0-21swapper/322:10:023
212824899290,27cyclictest0-21swapper/322:10:023
212824899290,27cyclictest0-21swapper/319:30:113
212824899290,27cyclictest0-21swapper/300:05:113
2128244992926,2cyclictest0-21swapper/221:17:002
212824499290,2cyclictest0-21swapper/200:00:012
212824499290,28cyclictest0-21swapper/219:15:142
212824499290,27cyclictest0-21swapper/223:50:022
212824499290,27cyclictest0-21swapper/223:50:022
212824499290,27cyclictest0-21swapper/223:16:592
212824499290,27cyclictest0-21swapper/222:00:012
212824499290,27cyclictest0-21swapper/220:45:132
212824499290,27cyclictest0-21swapper/220:20:122
212823999290,24cyclictest2233288-1kworker/1:0H+mmc_complete00:40:001
4577091280,6ptp4l441ktimers/320:35:003
4577091280,4ptp4l61490irq/134-eno1-TxRx-022:39:573
4577091280,4ptp4l61490irq/134-eno1-TxRx-022:39:563
2128248992826,1cyclictest0-21swapper/320:35:133
2128248992826,1cyclictest0-21swapper/320:21:003
2128248992826,1cyclictest0-21swapper/319:28:003
2128248992826,1cyclictest0-21swapper/300:38:593
2128248992825,2cyclictest0-21swapper/319:40:013
212824899280,2cyclictest0-21swapper/319:55:003
212824899280,27cyclictest0-21swapper/322:20:123
212824899280,27cyclictest0-21swapper/321:30:123
212824899280,26cyclictest0-21swapper/323:50:033
212824899280,26cyclictest0-21swapper/323:50:023
212824899280,26cyclictest0-21swapper/323:15:133
212824899280,26cyclictest0-21swapper/323:05:033
212824899280,26cyclictest0-21swapper/322:00:023
212824899280,26cyclictest0-21swapper/321:55:123
212824899280,26cyclictest0-21swapper/320:25:113
212824899280,26cyclictest0-21swapper/319:55:003
2128244992826,1cyclictest0-21swapper/222:57:002
2128244992825,2cyclictest0-21swapper/223:04:592
2128244992825,2cyclictest0-21swapper/223:04:592
2128244992825,2cyclictest0-21swapper/221:39:592
2128244992825,2cyclictest0-21swapper/221:10:122
212824499280,2cyclictest0-21swapper/223:50:022
212824499280,2cyclictest0-21swapper/223:50:022
212824499280,2cyclictest0-21swapper/223:35:132
212824499280,2cyclictest0-21swapper/220:10:132
212824499280,2cyclictest0-21swapper/220:10:122
212824499280,2cyclictest0-21swapper/200:15:132
212824499280,2cyclictest0-21swapper/200:00:002
212824499280,27cyclictest0-21swapper/221:50:142
212824499280,27cyclictest0-21swapper/220:40:132
212824499280,26cyclictest0-21swapper/219:10:122
212824499280,26cyclictest0-21swapper/200:26:592
212824499280,21cyclictest0-21swapper/222:00:012
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:45:003
4577091270,6ptp4l441ktimers/323:44:593
4577091270,6ptp4l441ktimers/321:15:013
2128248992725,1cyclictest0-21swapper/322:50:123
2128248992725,1cyclictest0-21swapper/322:25:583
2128248992725,1cyclictest0-21swapper/322:17:003
2128248992725,1cyclictest0-21swapper/319:45:133
2128248992725,1cyclictest0-21swapper/319:45:133
2128248992724,2cyclictest0-21swapper/322:55:593
212824899270,26cyclictest0-21swapper/321:35:593
212824899270,1cyclictest0-21swapper/321:29:593
2128244992724,2cyclictest0-21swapper/222:25:122
2128244992724,2cyclictest0-21swapper/222:24:552
2128244992724,2cyclictest0-21swapper/221:40:592
2128244992724,2cyclictest0-21swapper/220:36:592
2128244992724,2cyclictest0-21swapper/219:33:592
212824499270,24cyclictest0-21swapper/220:08:002
212823999270,25cyclictest2128282-21cat19:10:011
4577091260,6ptp4l441ktimers/321:55:003
4577091260,6ptp4l441ktimers/321:04:593
4577091260,6ptp4l441ktimers/321:04:593
4577091260,5ptp4l441ktimers/323:49:553
4577091260,5ptp4l441ktimers/323:49:553
4577091260,5ptp4l441ktimers/322:10:013
4577091260,5ptp4l441ktimers/321:20:003
2128248992624,1cyclictest0-21swapper/323:30:593
2128248992624,1cyclictest0-21swapper/320:55:123
2128248992623,2cyclictest0-21swapper/300:30:133
212824899260,2cyclictest0-21swapper/320:14:583
212824899260,2cyclictest0-21swapper/320:14:583
212824899260,25cyclictest0-21swapper/321:42:583
212824899260,24cyclictest0-21swapper/319:15:213
2128244992623,2cyclictest0-21swapper/220:28:592
2128244992623,2cyclictest0-21swapper/220:15:582
2128244992623,2cyclictest0-21swapper/219:20:532
212824499260,2cyclictest0-21swapper/219:37:592
212824499260,24cyclictest0-21swapper/221:22:592
212824499260,24cyclictest0-21swapper/219:45:592
212824499260,24cyclictest0-21swapper/219:45:582
4577091250,5ptp4l61490irq/134-eno1-TxRx-021:50:013
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:19:553
4577091250,4ptp4l61490irq/134-eno1-TxRx-019:25:003
2128244992522,2cyclictest0-21swapper/222:48:592
2128244992522,2cyclictest0-21swapper/220:31:582
2128244992522,2cyclictest0-21swapper/200:09:592
212824499250,2cyclictest0-21swapper/221:31:002
2128248992422,1cyclictest0-21swapper/300:17:593
2128244992219,2cyclictest0-21swapper/222:11:592
2128244992219,2cyclictest0-21swapper/222:11:582
2128244992018,1cyclictest0-21swapper/220:55:122
2128244991815,2cyclictest0-21swapper/223:30:122
2128244991815,2cyclictest0-21swapper/223:24:002
2128244991714,2cyclictest0-21swapper/223:27:592
2128244991411,2cyclictest0-21swapper/223:10:592
21282449996,2cyclictest0-21swapper/222:41:592
21282449963,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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