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2026-04-17 - 23:21
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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 Fri Apr 17, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1983725243,0sleep30-21swapper/307:20:173
1962724233,0sleep20-21swapper/207:17:522
1953423728,0sleep10-21swapper/107:16:471
1968722925,0sleep00-21swapper/007:18:340
19919991111,0cyclictest3524-21snmpd10:57:560
19921991010,0cyclictest26650-21sensors08:50:482
339960,0migration/331681-21sh11:47:303
339960,0migration/331029-21sh10:31:373
339960,0migration/32582-21sh09:55:573
339960,0migration/325248-21sh12:02:273
339960,0migration/321271-21sh10:09:523
339960,0migration/314324-21sh11:37:183
339960,0migration/310971-21sh12:14:363
29805060,0irq/28-eth0-rx-31655-21iostat_ios10:15:423
29805060,0irq/28-eth0-rx-29658-21perl12:25:393
29805060,0irq/28-eth0-rx-21604-21awk08:50:423
27160,0ktimersoftd/20-21swapper/207:30:502
199199960,0cyclictest0-21swapper/008:00:430
149960,0migration/016658-21sh11:57:340
149960,0migration/010118-21sh12:12:100
339950,0migration/38602-21pmu-power09:00:443
339950,0migration/36930-21gltestperf08:40:403
339950,0migration/35685-21if_eth110:00:413
339950,0migration/35647-21taskset08:39:193
339950,0migration/35129-21taskset11:30:543
339950,0migration/3497-21latency_hist11:50:273
339950,0migration/33573-21kthreadcore09:20:443
339950,0migration/33176-21kthreadcore07:50:443
339950,0migration/331491-21fschecks_count12:45:413
339950,0migration/328812-21kthreadcore07:45:443
339950,0migration/327213-21taskset08:10:253
339950,0migration/325366-21kthreadcore12:40:463
339950,0migration/325347-21kthreadcore11:05:443
339950,0migration/324834-21fschecks_time08:30:403
339950,0migration/324259-21kthreadcore12:20:433
339950,0migration/322003-21munin-node10:10:373
339950,0migration/319019-21sshd09:49:453
339950,0migration/315736-21munin-node11:40:383
339950,0migration/313218-21timerandwakeup10:20:503
339950,0migration/310581-21kthreadcore12:30:443
339950,0migration/310136-21fschecks_time07:35:413
329950,0watchdog/36314-21runrttasks10:44:213
329950,0watchdog/33112-21sh11:11:463
329950,0watchdog/323250-21iostat_ios11:25:423
329950,0watchdog/318428-21fschecks_time10:45:373
329950,0watchdog/310328-21ssh10:58:463
329950,0watchdog/30-21swapper/312:36:103
329950,0watchdog/30-21swapper/311:55:423
329950,0watchdog/30-21swapper/308:45:453
29815050,0irq/29-eth0-tx-5035-21munin-node12:30:392
29815050,0irq/29-eth0-tx-31363-21munin-node09:20:390
29815050,0irq/29-eth0-tx-30695-21munin-node11:30:452
29815050,0irq/29-eth0-tx-28773-21munin-node12:25:452
29815050,0irq/29-eth0-tx-28580-21ssh11:10:382
29815050,0irq/29-eth0-tx-16007-21ssh10:41:452
29815050,0irq/29-eth0-tx-0-21swapper/212:44:592
29815050,0irq/29-eth0-tx-0-21swapper/212:21:002
29815050,0irq/29-eth0-tx-0-21swapper/211:47:202
29815050,0irq/29-eth0-tx-0-21swapper/211:20:402
29815050,0irq/29-eth0-tx-0-21swapper/211:04:372
29815050,0irq/29-eth0-tx-0-21swapper/210:36:322
29815050,0irq/29-eth0-tx-0-21swapper/210:20:582
29815050,0irq/29-eth0-tx-0-21swapper/210:06:512
29815050,0irq/29-eth0-tx-0-21swapper/209:55:522
29815050,0irq/29-eth0-tx-0-21swapper/209:49:032
29815050,0irq/29-eth0-tx-0-21swapper/209:24:142
29815050,0irq/29-eth0-tx-0-21swapper/007:32:160
29815050,0irq/29-eth0-tx-0-21swapper/007:20:460
29805050,0irq/28-eth0-rx-6314-21runrttasks12:09:523
29805050,0irq/28-eth0-rx-6279-21diskstats07:55:373
29805050,0irq/28-eth0-rx-18340-21kthreadcore10:25:443
29805050,0irq/28-eth0-rx-0-21swapper/312:18:023
29805050,0irq/28-eth0-rx-0-21swapper/311:20:423
29805050,0irq/28-eth0-rx-0-21swapper/311:15:423
29805050,0irq/28-eth0-rx-0-21swapper/309:40:393
29805050,0irq/28-eth0-rx-0-21swapper/309:35:403
29805050,0irq/28-eth0-rx-0-21swapper/309:32:203
29805050,0irq/28-eth0-rx-0-21swapper/309:26:313
259950,0migration/28311-21kthreadcore12:10:432
259950,0migration/25933-21irqcore10:00:422
259950,0migration/232003-21timerwakeupswit09:35:522
259950,0migration/220505-21gltestperf09:50:392
259950,0migration/217932-21cpuspeed_turbos10:45:362
259950,0migration/217276-21kthreadcore10:25:432
259950,0migration/215540-21munin-node11:55:472
259950,0migration/214338-21kthreadcore12:15:442
259950,0migration/212296-21kthreadcore09:25:442
249950,0watchdog/210215-21perl07:35:412
199219955,0cyclictest0-21swapper/212:00:452
199219955,0cyclictest0-21swapper/210:18:162
199219950,0cyclictest0-21swapper/211:43:242
199219950,0cyclictest0-21swapper/211:28:072
199199955,0cyclictest0-21swapper/010:50:120
199199955,0cyclictest0-21swapper/009:34:030
199199950,0cyclictest0-21swapper/012:49:140
199199950,0cyclictest0-21swapper/011:43:200
199199950,0cyclictest0-21swapper/011:16:410
169950,0watchdog/118146-21kthreadcore08:45:451
149950,0migration/0904-21kthreadcore09:55:450
149950,0migration/08523-21kthreadcore08:40:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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