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2026-05-04 - 08:17
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Mon May 04, 2026 00:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46332215150,21sleep00-21swapper/019:06:360
48912209157,26sleep30-21swapper/319:09:573
27872202159,28sleep20-21swapper/219:05:092
48202199161,25sleep10-21swapper/119:09:021
4985991514,1cyclictest9-21ksoftirqd/022:35:160
5007991413,1cyclictest35-21ksoftirqd/322:20:003
5007991312,1cyclictest35-21ksoftirqd/322:35:163
499999130,12cyclictest0-21swapper/220:05:132
499999130,1cyclictest3044-21taskset23:23:012
499999130,1cyclictest21106-21grep00:30:132
4985991311,1cyclictest9-21ksoftirqd/022:35:000
4985991311,1cyclictest9-21ksoftirqd/022:20:000
499999125,6cyclictest32637-21ssh21:53:442
499999125,6cyclictest32637-21ssh21:53:442
499999122,1cyclictest24968-21latency_hist19:50:002
499999120,3cyclictest0-21swapper/222:08:582
499999120,1cyclictest13966-21gltestperf19:25:152
499999120,1cyclictest0-21swapper/223:17:532
4985991211,1cyclictest9-21ksoftirqd/023:25:000
499999111,2cyclictest27833-21df_inode22:30:142
499999110,5cyclictest4056-21apt-get23:25:112
499999110,2cyclictest240-21systemd-journal21:05:002
499999110,2cyclictest240-21systemd-journal20:35:002
499999110,2cyclictest240-21systemd-journal20:05:002
499999110,2cyclictest18230-21/usr/sbin/munin23:00:142
499999110,11cyclictest0-21swapper/223:59:092
499999110,10cyclictest0-21swapper/221:10:112
499399110,11cyclictest0-21swapper/123:44:181
498599118,1cyclictest9-21ksoftirqd/023:59:550
498599113,4cyclictest7618-21perf23:30:000
94702100,0sleep10-21swapper/100:15:091
500799109,0cyclictest35-21ksoftirqd/321:30:003
500799108,1cyclictest35-21ksoftirqd/322:00:123
500799108,1cyclictest35-21ksoftirqd/321:35:003
500799100,0cyclictest0-21swapper/321:23:123
499999108,1cyclictest29643-21dump-pmu-power20:00:002
499999106,4cyclictest61650irq/122-eno100:05:122
499999105,4cyclictest61650irq/122-eno100:26:182
499999104,1cyclictest61650irq/122-eno120:55:162
499999103,1cyclictest3768-21ssh21:15:182
499999103,1cyclictest29531-21load21:05:192
499999103,1cyclictest0-21swapper/223:45:122
499999102,2cyclictest9486-21apt-get00:15:112
499999101,8cyclictest13215-21sh22:53:572
499999101,1cyclictest240-21systemd-journal23:10:402
499999100,4cyclictest15518-21apt-get19:30:112
499999100,4cyclictest0-21swapper/221:45:112
499999100,4cyclictest0-21swapper/220:25:112
499999100,3cyclictest0-21swapper/222:48:242
499999100,2cyclictest240-21systemd-journal23:40:012
499999100,2cyclictest240-21systemd-journal22:20:002
499999100,2cyclictest240-21systemd-journal19:15:002
499999100,1cyclictest240-21systemd-journal23:40:012
499999100,1cyclictest240-21systemd-journal22:00:002
499999100,1cyclictest240-21systemd-journal21:40:002
499999100,1cyclictest240-21systemd-journal21:35:002
499999100,1cyclictest2363-21/usr/sbin/munin20:10:142
499999100,1cyclictest10498-21aten2.4-expect21:25:102
499999100,0cyclictest0-21swapper/221:44:162
498599108,1cyclictest9-21ksoftirqd/021:50:000
498599108,1cyclictest9-21ksoftirqd/019:25:000
498599100,2cyclictest0-21swapper/021:55:120
50079998,1cyclictest35-21ksoftirqd/323:40:163
50079998,0cyclictest35-21ksoftirqd/323:00:203
50079997,1cyclictest35-21ksoftirqd/322:40:163
50079997,1cyclictest35-21ksoftirqd/319:50:003
50079990,6cyclictest35-21ksoftirqd/300:30:153
50079990,1cyclictest0-21swapper/319:30:133
49999996,3cyclictest61650irq/122-eno122:02:362
49999994,1cyclictest61650irq/122-eno120:35:172
49999993,1cyclictest61650irq/122-eno123:30:192
49999993,1cyclictest61650irq/122-eno100:10:142
49999992,1cyclictest22608-21ntp_states20:50:172
49999991,2cyclictest12418-21grep19:20:192
49999990,4cyclictest32710-21runrttasks00:01:042
49999990,3cyclictest568-21nscd22:20:172
49999990,3cyclictest13202-21interrupts22:10:152
49999990,1cyclictest240-21systemd-journal23:09:102
49999990,1cyclictest240-21systemd-journal22:42:242
49999990,1cyclictest240-21systemd-journal22:35:002
49999990,1cyclictest240-21systemd-journal22:29:542
49999990,1cyclictest240-21systemd-journal21:20:522
49999990,1cyclictest240-21systemd-journal19:45:002
49999990,1cyclictest0-21swapper/219:50:102
49999990,0cyclictest0-21swapper/200:23:042
49939990,2cyclictest0-21swapper/121:45:001
49859998,1cyclictest9-21ksoftirqd/023:45:150
49859998,1cyclictest9-21ksoftirqd/019:15:010
49859990,6cyclictest0-21swapper/021:22:270
50079988,0cyclictest35-21ksoftirqd/322:55:123
50079988,0cyclictest35-21ksoftirqd/322:10:133
50079987,1cyclictest35-21ksoftirqd/322:05:133
50079987,1cyclictest35-21ksoftirqd/319:20:103
50079986,1cyclictest35-21ksoftirqd/323:55:133
50079986,1cyclictest35-21ksoftirqd/322:50:163
50079985,1cyclictest13650irq/124-ahci[0020:59:553
50079981,6cyclictest27321-21ssh22:30:123
50079980,5cyclictest16746-21runrttasks20:40:103
49999985,3cyclictest61650irq/122-eno100:37:142
49999985,2cyclictest6868-21perf20:20:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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