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2026-03-25 - 19:54
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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 Wed Mar 25, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128501340irq/42-ahci0-21swapper/207:08:424
128501340irq/42-ahci0-21swapper/207:08:414
9918501150irq/53-eth0-rx-0-21swapper/107:09:211
9918501150irq/53-eth0-rx-0-21swapper/107:09:211
128501070irq/42-ahci0-21swapper/807:08:2610
128501070irq/42-ahci0-21swapper/807:08:2510
8673210693sleep110-21swapper/1107:06:033
8673210693sleep110-21swapper/1107:06:023
8762210592sleep70-21swapper/707:07:119
8762210592sleep70-21swapper/707:07:109
128501050irq/42-ahci0-21swapper/307:09:085
128501050irq/42-ahci0-21swapper/307:09:075
8731210492sleep50-21swapper/507:06:457
8731210492sleep50-21swapper/507:06:447
991850930irq/53-eth0-rx-0-21swapper/407:06:306
991850930irq/53-eth0-rx-0-21swapper/407:06:306
880828878sleep60-21swapper/607:07:458
880828878sleep60-21swapper/607:07:458
640727671sleep90-21swapper/907:05:1311
640727671sleep90-21swapper/907:05:1211
991850670irq/53-eth0-rx-0-21swapper/1007:08:032
991850670irq/53-eth0-rx-0-21swapper/1007:08:022
872626055sleep00-21swapper/007:06:400
872626055sleep00-21swapper/007:06:390
9135994728cyclictest31ksoftirqd/010:19:200
9135993819cyclictest0-21swapper/009:17:260
9135993029cyclictest0-21swapper/008:09:020
991850280irq/53-eth0-rx-0-21swapper/1010:19:272
917699269cyclictest831ksoftirqd/1009:34:222
9177992410cyclictest0-21swapper/1109:29:303
9156992414cyclictest9650-21snmp_rack3slot908:35:155
917699225cyclictest831ksoftirqd/1012:35:192
9156992212cyclictest1140-21snmp_rack3slot911:20:235
917699214cyclictest831ksoftirqd/1011:47:172
917699214cyclictest831ksoftirqd/1011:26:072
9176992111cyclictest831ksoftirqd/1011:01:012
9176992111cyclictest831ksoftirqd/1011:01:002
913599200cyclictest0-21swapper/010:26:410
913599200cyclictest0-21swapper/010:26:400
913599200cyclictest0-21swapper/010:14:430
917699192cyclictest991850irq/53-eth0-rx-10:43:072
917699192cyclictest991850irq/53-eth0-rx-10:39:172
917699192cyclictest991850irq/53-eth0-rx-10:39:162
917699192cyclictest831ksoftirqd/1009:10:182
917599192cyclictest0-21swapper/912:18:3311
917599192cyclictest0-21swapper/910:26:2011
917599192cyclictest0-21swapper/910:26:1911
917599192cyclictest0-21swapper/910:13:2211
9176991817cyclictest0-21swapper/1010:24:002
9176991817cyclictest0-21swapper/1008:12:472
9176991816cyclictest10976-21irqstats11:55:192
917699181cyclictest991950irq/54-eth0-tx-12:02:552
917699181cyclictest991850irq/53-eth0-rx-12:05:182
917699181cyclictest991850irq/53-eth0-rx-11:11:452
917699181cyclictest991850irq/53-eth0-rx-09:50:472
917699181cyclictest991850irq/53-eth0-rx-09:28:392
917699181cyclictest991850irq/53-eth0-rx-09:23:082
917699181cyclictest991850irq/53-eth0-rx-07:17:502
917699181cyclictest831ksoftirqd/1010:10:022
917699181cyclictest831ksoftirqd/1010:10:022
917699181cyclictest831ksoftirqd/1008:05:132
917699181cyclictest831ksoftirqd/1007:25:122
917699181cyclictest831ksoftirqd/1007:25:112
917699181cyclictest113882sleep1008:39:472
917599181cyclictest2557-1kworker/9:0H09:09:0511
917599181cyclictest24355-21ssh09:27:4111
917599181cyclictest21546-21switchtime11:10:2411
917599181cyclictest1569-21ssh11:48:2111
917599181cyclictest0-21swapper/912:30:5011
917599181cyclictest0-21swapper/912:02:0711
917599181cyclictest0-21swapper/911:29:5111
917599181cyclictest0-21swapper/911:15:4811
917599181cyclictest0-21swapper/910:59:3011
917599181cyclictest0-21swapper/910:37:2711
917599181cyclictest0-21swapper/910:37:2611
917599181cyclictest0-21swapper/910:33:2311
917599181cyclictest0-21swapper/910:07:2811
917599181cyclictest0-21swapper/910:07:2711
917599181cyclictest0-21swapper/909:39:0111
917599181cyclictest0-21swapper/909:22:2311
9171991816cyclictest8888-21qemu-kvm07:30:137
9171991816cyclictest8888-21qemu-kvm07:30:127
9171991816cyclictest8888-21qemu-kvm07:25:137
9171991816cyclictest8888-21qemu-kvm07:25:127
9171991816cyclictest8887-21qemu-kvm07:44:437
9171991816cyclictest8887-21qemu-kvm07:44:427
9171991816cyclictest754-21qemu-kvm09:45:407
9151991816cyclictest2308-21snmpd10:10:354
9135991815cyclictest714-1kworker/0:1H07:10:020
913599181cyclictest0-21swapper/010:22:380
9176991716cyclictest831ksoftirqd/1008:15:192
9176991716cyclictest0-21swapper/1012:30:452
9176991716cyclictest0-21swapper/1012:20:142
9176991716cyclictest0-21swapper/1011:40:192
917699170cyclictest991850irq/53-eth0-rx-12:15:062
917699170cyclictest991850irq/53-eth0-rx-12:11:412
917699170cyclictest991850irq/53-eth0-rx-11:30:592
917699170cyclictest991850irq/53-eth0-rx-11:20:102
917699170cyclictest991850irq/53-eth0-rx-10:55:342
917699170cyclictest991850irq/53-eth0-rx-10:45:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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