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2026-04-23 - 21:57
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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 Thu Apr 23, 2026 12:46:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128501090irq/42-ahci0-21swapper/307:05:375
31184210793sleep20-21swapper/207:07:364
991850980irq/53-eth0-rx-0-21swapper/407:05:356
12850980irq/42-ahci0-21swapper/707:09:409
991850960irq/53-eth0-rx-0-21swapper/507:07:057
991850940irq/53-eth0-rx-0-21swapper/107:06:401
991850920irq/53-eth0-rx-0-21swapper/1107:06:323
172450820irq/56-eth1-rx-0-21swapper/807:08:5810
991850780irq/53-eth0-rx-0-21swapper/907:08:5711
3023026856sleep00-21swapper/007:05:210
3111426454sleep100-21swapper/1007:06:432
3118826354sleep60-21swapper/607:07:398
3154699320cyclictest0-21swapper/010:19:150
3154699320cyclictest0-21swapper/009:13:480
3154699320cyclictest0-21swapper/009:13:480
3154699320cyclictest0-21swapper/007:14:270
3155499280cyclictest0-21swapper/109:49:511
3156199270cyclictest0-21swapper/211:47:444
31546992119cyclictest22268-21nscd09:18:330
3154699200cyclictest0-21swapper/011:15:500
3157599192cyclictest0-21swapper/911:33:3811
3157599192cyclictest0-21swapper/910:18:2311
3157599192cyclictest0-21swapper/910:07:4811
3157599192cyclictest0-21swapper/910:07:4811
3157599192cyclictest0-21swapper/908:07:4711
3154699190cyclictest559-21md0_raid110:55:220
3154699190cyclictest15112-21latency_hist07:30:020
3154699190cyclictest0-21swapper/008:07:290
31576991816cyclictest7116-1kworker/10:0H11:01:292
31576991816cyclictest7116-1kworker/10:0H11:01:292
31576991816cyclictest11547-21kworker/10:012:19:302
31576991816cyclictest11547-21kworker/10:011:06:192
3157599181cyclictest9518-1kworker/9:0H11:02:4011
3157599181cyclictest9518-1kworker/9:0H11:02:4011
3157599181cyclictest9518-1kworker/9:0H10:22:2711
3157599181cyclictest9518-1kworker/9:0H09:54:0511
3157599181cyclictest761ksoftirqd/910:27:1011
3157599181cyclictest761ksoftirqd/909:10:1911
3157599181cyclictest761ksoftirqd/909:10:1811
3157599181cyclictest32159-21kworker/9:112:03:5411
3157599181cyclictest32159-21kworker/9:112:03:5411
3157599181cyclictest12850irq/42-ahci08:01:3811
3157599181cyclictest12850irq/42-ahci07:22:1411
3157599181cyclictest0-21swapper/912:27:4911
3157599181cyclictest0-21swapper/911:50:1411
3157599181cyclictest0-21swapper/911:23:2711
3157599181cyclictest0-21swapper/910:55:2611
3157599181cyclictest0-21swapper/910:51:3611
3157599181cyclictest0-21swapper/910:10:0311
3157599181cyclictest0-21swapper/910:03:0811
3157599181cyclictest0-21swapper/909:48:5511
3157599181cyclictest0-21swapper/909:08:3511
3157599181cyclictest0-21swapper/908:30:0311
3157599181cyclictest0-21swapper/907:56:5611
3157599181cyclictest0-21swapper/907:54:3311
3157599181cyclictest0-21swapper/907:19:4011
31565991816cyclictest32509-21qemu-kvm10:30:028
3156199180cyclictest0-21swapper/211:15:314
31546991817cyclictest12850irq/42-ahci10:20:480
31546991817cyclictest0-21swapper/007:18:360
3154699180cyclictest0-21swapper/007:56:550
31577991716cyclictest13341-1kworker/11:1H10:16:533
31576991716cyclictest11547-21kworker/10:009:15:202
31576991716cyclictest0-21swapper/1012:27:142
31576991716cyclictest0-21swapper/1011:55:102
31576991716cyclictest0-21swapper/1011:45:012
31576991716cyclictest0-21swapper/1011:16:532
31576991716cyclictest0-21swapper/1010:48:582
31576991716cyclictest0-21swapper/1010:30:482
31576991716cyclictest0-21swapper/1010:00:512
31576991716cyclictest0-21swapper/1009:52:072
31576991716cyclictest0-21swapper/1009:45:292
31576991716cyclictest0-21swapper/1009:03:252
31576991715cyclictest9624-21ssh10:40:452
31576991715cyclictest7116-1kworker/10:0H12:10:292
31576991715cyclictest7116-1kworker/10:0H12:03:352
31576991715cyclictest7116-1kworker/10:0H12:03:352
31576991715cyclictest7116-1kworker/10:0H11:37:282
31576991715cyclictest7116-1kworker/10:0H10:19:352
31576991715cyclictest32243-21ssh09:40:292
31576991715cyclictest26592-1kworker/10:2H10:06:322
31576991715cyclictest26592-1kworker/10:2H10:06:322
31576991715cyclictest23306-21ssh12:37:422
31576991715cyclictest17694-21sh10:21:262
31576991715cyclictest15916-21ssh12:30:382
31576991715cyclictest1502-1kworker/10:0H09:30:272
31576991715cyclictest1502-1kworker/10:0H09:25:592
31576991715cyclictest1502-1kworker/10:0H09:21:332
31576991715cyclictest11238-1kworker/10:2H08:10:122
31576991715cyclictest0-21swapper/1012:21:332
31576991715cyclictest0-21swapper/1012:05:112
31576991715cyclictest0-21swapper/1011:50:272
31576991715cyclictest0-21swapper/1011:40:012
31576991715cyclictest0-21swapper/1011:33:022
31576991715cyclictest0-21swapper/1011:25:232
31576991715cyclictest0-21swapper/1011:20:052
31576991715cyclictest0-21swapper/1011:11:132
31576991715cyclictest0-21swapper/1010:54:372
31576991715cyclictest0-21swapper/1010:35:352
31576991715cyclictest0-21swapper/1010:35:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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