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2026-06-27 - 13:32
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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 rack1slot2.osadl.org (updated Sat Jun 27, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3209524738,0sleep30-21swapper/307:22:253
3206224435,0sleep10-21swapper/107:22:031
2646723724,0sleep00-21swapper/007:21:300
3211123425,0sleep20-21swapper/207:22:362
324949999,0cyclictest3524-21snmpd08:28:560
324949988,0cyclictest0-21swapper/009:27:420
8305060,0irq/26-0000:00:14822-21crond08:21:152
339960,0migration/39501-21sh11:32:493
339960,0migration/38213-21sh10:01:183
339960,0migration/37478-21sh12:27:113
339960,0migration/330438-21sh09:52:583
339960,0migration/327489-21sh11:44:493
339960,0migration/325308-21pmu-power10:26:363
339960,0migration/318347-21sh09:26:483
339960,0migration/316282-21diskmemload12:32:323
324959960,0cyclictest0-21swapper/112:25:221
324959960,0cyclictest0-21swapper/111:11:441
324949960,0cyclictest0-21swapper/012:43:320
29815060,0irq/29-eth0-tx-29447-21munin-node08:31:350
29805060,0irq/28-eth0-rx-9187-21kthreadcore10:56:333
29805060,0irq/28-eth0-rx-8888-21grep12:11:343
29805060,0irq/28-eth0-rx-31144-21kthreadcore09:16:333
29805060,0irq/28-eth0-rx-1697-21ssh10:16:203
149960,0migration/05391-21sh10:54:150
149960,0migration/026684-21sh11:42:350
149960,0migration/020376-21sh11:57:460
149960,0migration/019726-21sa112:56:160
149960,0migration/012334-21sh09:41:590
149960,0migration/011018-21sh11:36:260
339950,0migration/39783-21kthreadcore08:16:323
339950,0migration/39208-21switchtime12:46:433
339950,0migration/34097-21munin-node10:51:393
339950,0migration/332609-21munin-node12:41:383
339950,0migration/329738-21missed_timers11:06:363
339950,0migration/329304-21cpuspeed_turbos09:36:303
339950,0migration/329216-21taskset07:46:163
339950,0migration/328824-21munin-node10:31:313
339950,0migration/32831-21kthreadcore12:06:333
339950,0migration/326302-21latency_hist12:41:163
339950,0migration/326190-21kthreadcore07:41:343
339950,0migration/325638-21kthreadcore10:46:343
339950,0migration/322557-21kthreadcore09:31:333
339950,0migration/32060-21munin-node08:11:333
339950,0migration/319317-21needreboot11:56:363
339950,0migration/319009-21kthreadcore12:16:353
339950,0migration/316563-21kthreadcore07:36:323
339950,0migration/316078-21hddtemp_smartct11:01:313
339950,0migration/31259-21gltestperf07:26:323
324969955,0cyclictest0-21swapper/209:51:442
324969955,0cyclictest0-21swapper/207:46:342
324969950,0cyclictest0-21swapper/211:53:272
324969950,0cyclictest0-21swapper/211:05:502
324959955,0cyclictest0-21swapper/112:43:301
324959954,0cyclictest16193-21awk11:01:321
324959950,0cyclictest0-21swapper/111:00:141
324959950,0cyclictest0-21swapper/110:30:541
324959950,0cyclictest0-21swapper/110:26:011
324959950,0cyclictest0-21swapper/110:04:441
324959950,0cyclictest0-21swapper/109:49:551
324959950,0cyclictest0-21swapper/108:16:351
324949955,0cyclictest0-21swapper/011:25:200
324949955,0cyclictest0-21swapper/011:03:540
324949950,0cyclictest0-21swapper/012:21:460
329950,0watchdog/326549-21kthreadcore08:26:353
329950,0watchdog/325109-21fschecks_time12:21:313
329950,0watchdog/319173-21diskstats08:46:313
329950,0watchdog/316905-21kthreadcore09:06:353
329950,0watchdog/30-21swapper/309:01:353
329950,0watchdog/30-21swapper/307:31:343
29815050,0irq/29-eth0-tx-969-21ssh10:14:562
29815050,0irq/29-eth0-tx-7831-21munin-node08:16:280
29815050,0irq/29-eth0-tx-7310-21ssh10:36:322
29815050,0irq/29-eth0-tx-29574-21munin-node09:16:400
29815050,0irq/29-eth0-tx-16579-21cut11:36:372
29815050,0irq/29-eth0-tx-14841-21munin-node07:36:350
29815050,0irq/29-eth0-tx-0-21swapper/210:47:542
29815050,0irq/29-eth0-tx-0-21swapper/210:41:202
29815050,0irq/29-eth0-tx-0-21swapper/209:43:202
29815050,0irq/29-eth0-tx-0-21swapper/008:36:350
29805050,0irq/28-eth0-rx-5938-21munin-node09:41:303
29805050,0irq/28-eth0-rx-4203-21hostname07:51:283
29805050,0irq/28-eth0-rx-397-21diskstats11:11:303
29805050,0irq/28-eth0-rx-31837-21python10:11:383
29805050,0irq/28-eth0-rx-24913-21ssh10:10:253
29805050,0irq/28-eth0-rx-19373-21kthreadcore08:21:343
29805050,0irq/28-eth0-rx-18385-21ssh11:38:313
29805050,0irq/28-eth0-rx-16303-21cat09:46:323
29805050,0irq/28-eth0-rx-13393-21kthreadcore11:16:353
29805050,0irq/28-eth0-rx-0-21swapper/312:01:343
29805050,0irq/28-eth0-rx-0-21swapper/311:51:353
29805050,0irq/28-eth0-rx-0-21swapper/311:48:523
29805050,0irq/28-eth0-rx-0-21swapper/311:26:353
29805050,0irq/28-eth0-rx-0-21swapper/310:43:173
29805050,0irq/28-eth0-rx-0-21swapper/310:36:343
29805050,0irq/28-eth0-rx-0-21swapper/309:57:263
29805050,0irq/28-eth0-rx-0-21swapper/309:21:303
27150,0ktimersoftd/20-21swapper/211:50:372
259950,0migration/24198-21latency_hist08:36:152
259950,0migration/223881-21kthreadcore11:41:362
249950,0watchdog/212442-21kthreadcore09:01:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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