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2026-07-20 - 13:44
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rack3slot4.osadl.org (updated Mon Jul 20, 2026 12:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22947249914968,53cyclictest2296612-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
07:34:590
22947249912492,25cyclictest2378177-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
09:40:320
2294724991132,52cyclictest2390914-21ssh09:46:320
2294724991131,97cyclictest0-21swapper/011:50:410
2294724991101,95cyclictest67650irq/530-eth0-Tx12:00:450
22947249910969,23cyclictest67350irq/527-eth0-Tx10:05:430
22947249910929,66cyclictest67450irq/528-eth0-Tx10:10:230
2294724991062,82cyclictest2475853-21ntpq10:50:330
22947449910492,7cyclictest2382668-21ssh09:40:314
22947389910389,7cyclictest2419226-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
10:10:363
22947249910375,20cyclictest2446389-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
10:40:390
22947249910222,5cyclictest2431532-21ssh10:17:130
22947249910122,6cyclictest2495896-21ntp_states11:05:380
22947249910122,6cyclictest2495896-21ntp_states11:05:370
22947249910119,68cyclictest67350irq/527-eth0-Tx10:20:430
2294724991002,85cyclictest0-21swapper/011:50:010
2294724991002,85cyclictest0-21swapper/011:50:000
22947249910022,4cyclictest0-21swapper/012:40:020
2294724991001,75cyclictest2609140-21ssh12:31:100
2294724991001,58cyclictest0-21swapper/009:20:180
2294724999975,15cyclictest2430831-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
11:20:470
2294724999928,39cyclictest67450irq/528-eth0-Tx09:52:200
2294724999916,48cyclictest2362838-21ntp_offset09:25:340
229472499989,57cyclictest2545428-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
12:20:070
2294724999726,5cyclictest2446206-21ssh10:28:370
229472499972,42cyclictest2508472-21ssh11:15:260
2294724999712,68cyclictest15-21rcuc/010:55:250
229472499964,73cyclictest13-21ksoftirqd/011:30:340
229472499961,58cyclictest2419226-21kworker/u12:3+rpciod@
rpc_async_schedule
10:35:590
229472499961,58cyclictest2419226-21kworker/u12:3+rpciod@
rpc_async_schedule
10:35:580
2294724999523,5cyclictest2448605-21ssh10:30:210
2294724999523,5cyclictest2448605-21ssh10:30:210
2294724999427,47cyclictest67350irq/527-eth0-Tx10:45:310
229472499931,80cyclictest0-21swapper/008:00:010
2294724999221,64cyclictest0-21swapper/012:15:180
229472499921,62cyclictest2351576-21ssh09:17:030
2294734999075,8cyclictest2306464-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
08:05:122
2294724999048,23cyclictest2301527-21sed07:25:210
2294724999033,15cyclictest67350irq/527-eth0-Tx08:15:210
2294724998958,22cyclictest0-21swapper/007:50:010
229472499889,18cyclictest67550irq/529-eth0-Tx09:55:330
229472499881,25cyclictest0-21swapper/011:37:430
229472499881,25cyclictest0-21swapper/009:00:120
229472499881,25cyclictest0-21swapper/009:00:120
229472499881,16cyclictest0-21swapper/012:13:390
229472499871,26cyclictest0-21swapper/011:25:110
229472499871,25cyclictest0-21swapper/008:35:220
229472499871,24cyclictest0-21swapper/009:32:080
229472499871,24cyclictest0-21swapper/009:32:070
2294724998629,25cyclictest67650irq/530-eth0-Tx09:35:360
2294724998629,25cyclictest67650irq/530-eth0-Tx09:35:350
2294724998620,8cyclictest13-21ksoftirqd/011:10:310
2294724998616,45cyclictest2306464-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
07:50:180
229472499861,50cyclictest2323384-21/usr/sbin/munin08:20:180
229472499861,49cyclictest0-21swapper/011:00:180
24201282850,5chrt0-21swapper/310:09:123
2294744998575,6cyclictest2462671-21ssh10:40:384
2294744998575,5cyclictest2516345-21ssh11:20:484
2294724998519,4cyclictest0-21swapper/012:05:450
229472499851,25cyclictest2590199-21kworker/u12:2+rpciod@
rpc_async_schedule
12:29:320
229472499851,25cyclictest2590199-21kworker/u12:2+rpciod@
rpc_async_schedule
12:29:320
2294744998470,8cyclictest2416399-21ssh10:05:424
2294724998460,21cyclictest2296612-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
07:24:580
229472499842,24cyclictest0-21swapper/011:58:570
2294728998369,7cyclictest2545428-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
12:10:541
2294724998326,27cyclictest2547176-21latency_hist11:45:020
2294734998268,7cyclictest2430831-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
10:50:392
2294724998145,23cyclictest0-21swapper/009:10:310
2294724998125,6cyclictest67350irq/527-eth0-Tx07:40:330
2294724998122,5cyclictest15-21rcuc/010:00:150
229437328153,20sleep40-21swapper/407:07:294
229472499801,51cyclictest0-21swapper/009:05:130
2294750997974,2cyclictest0-21swapper/509:05:255
2294728997967,6cyclictest2553157-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
12:00:531
229472499792,27cyclictest2295827-21pluginstate07:10:390
229472499792,21cyclictest2335664-21aten2.4-expect08:50:180
229472499782,28cyclictest2296944-21/usr/sbin/munin07:15:270
229472499782,28cyclictest2296944-21/usr/sbin/munin07:15:270
229472499781,27cyclictest0-21swapper/008:05:220
229472499772,49cyclictest2315178-21find08:00:030
2294734997666,4cyclictest2601042-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
12:31:022
2294744997569,3cyclictest0-21swapper/407:34:594
2294738997561,7cyclictest2430831-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
11:15:473
2294738997543,7cyclictest2347218-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
09:20:273
229472499751,58cyclictest0-21swapper/008:55:260
23019312740,5sleep30-21swapper/307:25:373
2294750997468,3cyclictest0-21swapper/507:19:255
2294750997468,3cyclictest0-21swapper/507:19:255
2294738997460,7cyclictest2430831-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
10:45:463
229472499742,30cyclictest2327911-21kernelversion08:30:240
2294724997417,5cyclictest2325395-21/usr/sbin/munin08:25:180
2294728997359,7cyclictest2306464-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
08:00:061
229472499731,57cyclictest0-21swapper/007:35:120
2294750997266,3cyclictest0-21swapper/510:10:555
2294750997266,2cyclictest0-21swapper/512:19:465
2294738997261,5cyclictest2430831-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
10:25:373
2294728997258,7cyclictest2491276-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
11:10:461
25985332710,5sleep30-21swapper/312:23:473
2294750997165,3cyclictest0-21swapper/507:54:095
2294738997155,7cyclictest2341006-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
09:15:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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