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2025-07-10 - 10:02
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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 Thu Jul 10, 2025 00:46:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3764123223622337,8sleep03763218-21kworker/0:2+events@
dbs_work_handler
19:06:040
37641002808785,14sleep40-21swapper/419:05:504
3764570991381,107cyclictest3997516-21latency_hist23:45:020
3764570991171,70cyclictest3810414-21kworker/u12:1+rpciod@
rpc_async_schedule
21:20:120
3764570991161,75cyclictest3842889-21kworker/u12:1+rpciod@
rpc_async_schedule
21:42:010
376457999115102,6cyclictest3917091-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
22:51:362
37645849911494,8cyclictest3842889-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
21:46:233
37645709911327,55cyclictest64450irq/529-eth0-Tx22:20:320
37645709911327,55cyclictest64450irq/529-eth0-Tx22:20:310
37645709911327,55cyclictest64450irq/529-eth0-Tx22:20:310
3764570991131,95cyclictest0-21swapper/020:10:160
37645709911246,47cyclictest0-21swapper/022:29:030
37645709911246,47cyclictest0-21swapper/022:29:020
37645709911155,41cyclictest0-21swapper/020:05:510
37645709911155,41cyclictest0-21swapper/020:05:510
37645709911129,58cyclictest64350irq/528-eth0-Tx22:50:230
3764570991101,91cyclictest3919152-21ssh22:40:260
3764570991101,91cyclictest3919152-21ssh22:40:250
37645849910894,7cyclictest3786380-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
20:06:043
37645849910894,7cyclictest3786380-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
20:06:043
3764570991081,94cyclictest0-21swapper/020:40:120
37645849910793,7cyclictest4005742-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
23:57:433
3764570991071,73cyclictest0-21swapper/021:55:030
3764570991071,73cyclictest0-21swapper/021:55:030
37645709910712,79cyclictest64450irq/529-eth0-Tx23:15:170
3764570991062,80cyclictest0-21swapper/022:02:110
3764570991061,76cyclictest0-21swapper/021:10:210
3764570991061,3cyclictest0-21swapper/020:35:140
3764570991055,78cyclictest0-21swapper/022:38:290
3764570991051,91cyclictest0-21swapper/000:33:030
3764570991051,91cyclictest0-21swapper/000:33:030
3764570991051,90cyclictest0-21swapper/020:25:150
3764570991051,90cyclictest0-21swapper/020:25:150
3764570991051,89cyclictest0-21swapper/021:06:390
37645959910498,3cyclictest0-21swapper/523:06:425
37645799910491,6cyclictest3782187-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
19:51:032
3764570991049,72cyclictest64550irq/530-eth0-Tx00:25:210
37645709910480,16cyclictest3761147-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork
19:20:580
37645709910423,43cyclictest0-21swapper/022:46:330
37645709910423,43cyclictest0-21swapper/022:46:330
3764570991041,83cyclictest0-21swapper/021:45:330
37645709910410,79cyclictest64250irq/527-eth0-Tx22:34:430
3764570991032,87cyclictest0-21swapper/019:40:130
3764570991022,81cyclictest0-21swapper/019:39:130
3764570991021,66cyclictest0-21swapper/000:10:250
3764570991021,66cyclictest0-21swapper/000:10:250
3764570991021,64cyclictest0-21swapper/021:32:230
3764570991014,34cyclictest64450irq/529-eth0-Tx21:25:180
37645709910142,42cyclictest0-21swapper/019:15:510
3764570991012,30cyclictest4058546-21kworker/u12:4+rpciod@
rpc_async_schedule
00:37:540
3764570991012,30cyclictest4058546-21kworker/u12:4+rpciod@
rpc_async_schedule
00:37:540
3764570991011,87cyclictest0-21swapper/022:55:590
37645849910088,6cyclictest3978307-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
23:36:463
37645709910066,22cyclictest64250irq/527-eth0-Tx19:45:570
37645709910022,4cyclictest0-21swapper/000:23:190
3764570991001,85cyclictest0-21swapper/019:10:130
3764584999985,7cyclictest4005742-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork
23:52:373
3764570999980,16cyclictest3877166-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
22:06:280
3764570999967,20cyclictest64350irq/528-eth0-Tx22:13:440
376457099991,77cyclictest3821555-21ssh21:19:050
376457099991,77cyclictest3821555-21ssh21:19:040
376457099991,75cyclictest0-21swapper/000:02:110
376457099991,75cyclictest0-21swapper/000:02:100
376457099981,78cyclictest0-21swapper/020:50:020
376457099981,63cyclictest3892408-21ssh22:18:330
3764570999752,23cyclictest0-21swapper/020:30:130
3764570999743,42cyclictest64350irq/528-eth0-Tx23:52:340
376457099971,76cyclictest0-21swapper/021:55:180
376457099971,74cyclictest0-21swapper/021:00:300
376457099971,74cyclictest0-21swapper/021:00:290
376457099971,73cyclictest0-21swapper/020:23:500
376457099971,73cyclictest0-21swapper/020:23:490
376457099969,7cyclictest4033161-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
00:15:330
376457099965,58cyclictest3926229-1kworker/0:2H+kblockd@
blk_mq_run_work_fn
23:45:050
3764570999560,22cyclictest0-21swapper/020:55:340
376457099951,78cyclictest0-21swapper/020:00:160
376457099951,78cyclictest0-21swapper/020:00:150
3764584999480,7cyclictest3917091-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
22:41:363
3764584999480,7cyclictest3917091-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
22:41:353
3764570999461,21cyclictest0-21swapper/019:59:270
376457099942,6cyclictest3967516-21/usr/sbin/munin23:20:190
376457099942,6cyclictest3967516-21/usr/sbin/munin23:20:190
376457099941,85cyclictest1165-21runrttasks19:33:370
376457099931,77cyclictest0-21swapper/000:05:430
376457099931,77cyclictest0-21swapper/000:05:430
3764584999279,7cyclictest4047674-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
00:38:593
3764584999279,7cyclictest4047674-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork
00:38:593
3764584999277,8cyclictest3978307-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
00:30:563
3764584999277,8cyclictest3978307-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork
00:30:563
376457099922,63cyclictest0-21swapper/023:25:290
376457099922,63cyclictest0-21swapper/023:25:280
3764584999177,7cyclictest3877166-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork
22:16:303
376457099911,70cyclictest0-21swapper/020:47:510
376457099911,3cyclictest0-21swapper/023:14:070
376457099911,3cyclictest0-21swapper/023:14:070
3764589999085,2cyclictest0-21swapper/423:11:424
3764589999085,2cyclictest0-21swapper/423:11:424
3764570999055,24cyclictest0-21swapper/019:27:550
376457099902,5cyclictest4011627-21timerwakeupswit23:55:430
3764570999025,48cyclictest64550irq/530-eth0-Tx21:40:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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