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2026-03-20 - 14:07
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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 100 highest latencies:
System rack3slot3.osadl.org (updated Fri Mar 20, 2026 12:46:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128501120irq/42-ahci0-21swapper/107:09:071
423210793sleep20-21swapper/207:06:234
383210491sleep60-21swapper/607:05:508
991850940irq/53-eth0-rx-0-21swapper/707:09:399
991850920irq/53-eth0-rx-0-21swapper/907:06:3911
991850920irq/53-eth0-rx-0-21swapper/1007:06:482
991950910irq/54-eth0-tx-0-21swapper/407:05:256
991850910irq/53-eth0-rx-0-21swapper/807:06:1010
12850910irq/42-ahci0-21swapper/307:05:245
991850890irq/53-eth0-rx-0-21swapper/507:08:097
991850870irq/53-eth0-rx-0-21swapper/1107:05:463
52828071sleep00-21swapper/007:07:450
867993617cyclictest0-21swapper/007:28:020
908992811cyclictest811rcuc/1012:14:512
908992710cyclictest831ksoftirqd/1010:55:022
908992710cyclictest831ksoftirqd/1009:44:482
90899269cyclictest831ksoftirqd/1012:16:082
90899269cyclictest831ksoftirqd/1011:39:512
90899269cyclictest831ksoftirqd/1010:19:002
90899269cyclictest831ksoftirqd/1010:18:592
90899258cyclictest831ksoftirqd/1012:26:162
90899258cyclictest831ksoftirqd/1011:54:402
90999222cyclictest0-21swapper/1110:08:173
90999222cyclictest0-21swapper/1110:08:163
86799220cyclictest0-21swapper/007:23:170
86799220cyclictest0-21swapper/007:23:160
90899214cyclictest831ksoftirqd/1008:28:272
909992018cyclictest0-21swapper/1109:11:463
90899209cyclictest831ksoftirqd/1012:01:492
90899192cyclictest991850irq/53-eth0-rx-12:38:142
90899192cyclictest991850irq/53-eth0-rx-11:41:272
90899192cyclictest991850irq/53-eth0-rx-09:58:322
90899192cyclictest991850irq/53-eth0-rx-09:25:252
90899192cyclictest831ksoftirqd/1011:45:342
90899192cyclictest831ksoftirqd/1011:22:492
90899192cyclictest831ksoftirqd/1010:48:392
90899192cyclictest831ksoftirqd/1010:35:512
90899192cyclictest831ksoftirqd/1010:28:102
90799192cyclictest0-21swapper/911:30:5611
90799192cyclictest0-21swapper/910:09:1311
90799192cyclictest0-21swapper/910:09:1311
90799192cyclictest0-21swapper/909:11:4111
908991817cyclictest831ksoftirqd/1009:00:262
908991817cyclictest0-21swapper/1010:13:202
908991817cyclictest0-21swapper/1009:45:202
908991816cyclictest19911-21kworker/10:209:37:142
908991816cyclictest19911-21kworker/10:209:33:432
908991816cyclictest18697-21ssh12:34:242
90899181cyclictest991950irq/54-eth0-tx-12:21:502
90899181cyclictest991950irq/54-eth0-tx-10:07:122
90899181cyclictest991950irq/54-eth0-tx-10:07:112
90899181cyclictest991850irq/53-eth0-rx-12:05:422
90899181cyclictest991850irq/53-eth0-rx-11:01:092
90899181cyclictest991850irq/53-eth0-rx-10:41:422
90899181cyclictest991850irq/53-eth0-rx-09:53:522
90899181cyclictest991850irq/53-eth0-rx-09:22:132
90899181cyclictest991850irq/53-eth0-rx-09:18:282
90899181cyclictest991850irq/53-eth0-rx-09:11:492
90899181cyclictest831ksoftirqd/1011:30:192
90899181cyclictest831ksoftirqd/1010:20:252
90899181cyclictest831ksoftirqd/1010:20:252
90899181cyclictest831ksoftirqd/1009:05:132
90899181cyclictest831ksoftirqd/1007:55:152
90899181cyclictest831ksoftirqd/1007:35:022
90899181cyclictest831ksoftirqd/1007:25:112
90799181cyclictest761ksoftirqd/912:30:1211
90799181cyclictest761ksoftirqd/912:05:1811
90799181cyclictest761ksoftirqd/908:10:0211
90799181cyclictest741rcuc/910:20:2711
90799181cyclictest741rcuc/910:20:2611
90799181cyclictest0-21swapper/911:52:4611
90799181cyclictest0-21swapper/911:10:2111
90799181cyclictest0-21swapper/911:09:3411
90799181cyclictest0-21swapper/910:48:3811
90799181cyclictest0-21swapper/910:38:3311
90799181cyclictest0-21swapper/910:10:3411
90799181cyclictest0-21swapper/909:52:3611
90799181cyclictest0-21swapper/909:47:4911
90799181cyclictest0-21swapper/909:41:0711
90799181cyclictest0-21swapper/909:32:5211
90799181cyclictest0-21swapper/908:20:5111
90799181cyclictest0-21swapper/908:00:2511
90799181cyclictest0-21swapper/907:18:5011
904991816cyclictest25061-21qemu-kvm09:34:428
901991816cyclictest25061-21qemu-kvm09:33:367
909991716cyclictest991950irq/54-eth0-tx-10:13:103
908991716cyclictest831ksoftirqd/1007:15:012
908991716cyclictest19911-21kworker/10:208:55:552
908991716cyclictest0-21swapper/1010:50:082
908991716cyclictest0-21swapper/1008:20:122
908991716cyclictest0-21swapper/1007:20:112
908991716cyclictest0-21swapper/1007:20:102
90899170cyclictest991850irq/53-eth0-rx-11:55:132
90899170cyclictest991850irq/53-eth0-rx-11:10:032
90899170cyclictest991850irq/53-eth0-rx-08:50:232
90899170cyclictest991850irq/53-eth0-rx-08:46:062
90899170cyclictest991850irq/53-eth0-rx-07:10:522
90899170cyclictest97292sleep1008:01:122
90899170cyclictest831ksoftirqd/1011:25:052
90899170cyclictest831ksoftirqd/1011:15:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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