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2026-08-28 - 22:09
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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 Aug 28, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2856424635,0sleep00-21swapper/007:29:090
2863724232,0sleep20-21swapper/207:29:592
2854723828,0sleep30-21swapper/307:28:563
2228423425,0sleep10-21swapper/107:26:331
329970,0watchdog/3524-21sh09:45:153
339960,0migration/327220-21aten_r1power_po12:51:323
339960,0migration/323581-21sh12:27:293
339960,0migration/317871-21sh11:27:093
339960,0migration/315230-21sh12:22:573
339960,0migration/314082-21sh12:05:103
339960,0migration/312526-21sh10:27:523
29805060,0irq/28-eth0-rx-9699-21ntp_offset10:06:413
29805060,0irq/28-eth0-rx-23586-21munin-node10:36:383
29805060,0irq/28-eth0-rx-17750-21sed09:11:473
288199960,0cyclictest0-21swapper/109:34:191
288189960,0cyclictest0-21swapper/009:36:320
149960,0migration/05772-21sh12:00:540
149960,0migration/032693-21sh11:01:210
149960,0migration/024969-21sh11:13:220
149960,0migration/021347-21sh10:33:440
339950,0migration/37931-21aten_r1power_fr08:46:333
339950,0migration/36916-21kthreadcore11:21:383
339950,0migration/35104-21idleruntime08:21:353
339950,0migration/34173-21kthreadcore07:56:383
339950,0migration/33927-21fschecks_count12:56:333
339950,0migration/33289-21kthreadcore08:41:373
339950,0migration/33271-21switchtime09:01:453
339950,0migration/331751-21fschecks_time10:41:343
339950,0migration/33015-21timerandwakeup07:31:443
339950,0migration/329289-21kthreadcore08:36:383
339950,0migration/326750-21kthreadcore12:11:413
339950,0migration/325101-21taskset08:31:483
339950,0migration/317000-21kthreadcore08:51:363
339950,0migration/315303-21munin-node11:06:413
339950,0migration/312368-21cpuspeed_turbos10:11:323
339950,0migration/311161-21taskset09:10:203
329950,0watchdog/34275-21tr12:16:403
329950,0watchdog/330868-21perl11:56:363
329950,0watchdog/321814-21kthreadcore11:11:403
329950,0watchdog/313940-21unixbench_multi10:46:483
329950,0watchdog/30-21swapper/309:36:393
29815050,0irq/29-eth0-tx-3932-21munin-node07:36:450
29815050,0irq/29-eth0-tx-27539-21cut12:11:412
29815050,0irq/29-eth0-tx-25536-21munin-node07:51:390
29815050,0irq/29-eth0-tx-25300-21perl10:56:332
29815050,0irq/29-eth0-tx-21993-21munin-node08:11:430
29815050,0irq/29-eth0-tx-16426-21munin-node09:36:432
29815050,0irq/29-eth0-tx-0-21swapper/212:41:232
29815050,0irq/29-eth0-tx-0-21swapper/212:39:512
29815050,0irq/29-eth0-tx-0-21swapper/212:23:552
29815050,0irq/29-eth0-tx-0-21swapper/212:05:222
29815050,0irq/29-eth0-tx-0-21swapper/008:58:430
29815050,0irq/29-eth0-tx-0-21swapper/008:41:430
29805050,0irq/28-eth0-rx-8681-21ssh11:05:403
29805050,0irq/28-eth0-rx-31762-21taskset10:58:363
29805050,0irq/28-eth0-rx-17588-21ssh09:53:343
29805050,0irq/28-eth0-rx-16313-21irqstats12:06:353
29805050,0irq/28-eth0-rx-0-21swapper/312:31:373
29805050,0irq/28-eth0-rx-0-21swapper/310:22:323
29805050,0irq/28-eth0-rx-0-21swapper/310:02:503
29805050,0irq/28-eth0-rx-0-21swapper/309:51:213
288209955,0cyclictest0-21swapper/211:53:082
288209955,0cyclictest0-21swapper/211:53:082
288209950,0cyclictest0-21swapper/212:53:412
288209950,0cyclictest0-21swapper/212:48:472
288209950,0cyclictest0-21swapper/211:50:562
288209950,0cyclictest0-21swapper/210:12:242
288199955,0cyclictest0-21swapper/111:43:071
288199955,0cyclictest0-21swapper/111:30:211
288199955,0cyclictest0-21swapper/109:49:551
288199950,0cyclictest0-21swapper/112:37:401
288199950,0cyclictest0-21swapper/109:52:551
288189953,0cyclictest29092-21kworker/0:010:42:360
288189953,0cyclictest20854-21kworker/0:210:53:420
288189953,0cyclictest20854-21kworker/0:210:25:080
288189953,0cyclictest20854-21kworker/0:210:11:380
288189953,0cyclictest20854-21kworker/0:210:08:080
288189953,0cyclictest1547-21kworker/0:112:40:080
288189953,0cyclictest1547-21kworker/0:112:27:440
288189953,0cyclictest1547-21kworker/0:112:25:180
288189953,0cyclictest1547-21kworker/0:111:42:480
288189953,0cyclictest1547-21kworker/0:111:38:140
288189953,0cyclictest1547-21kworker/0:111:03:420
27150,0ktimersoftd/20-21swapper/210:28:572
259950,0migration/2752-21kthreadcore09:01:382
259950,0migration/231518-21kthreadcore11:16:382
259950,0migration/228074-21sh11:36:222
259950,0migration/223966-21kthreadcore08:11:372
259950,0migration/216877-21kthreadcore10:31:352
259950,0migration/21390-21timerandwakeup10:01:442
259950,0migration/21089-21kthreadcore08:16:372
249950,0watchdog/213909-21kthreadcore11:26:402
179950,0migration/1630-21kthreadcore10:21:381
179950,0migration/14943-21idleruntime07:36:351
179950,0migration/128140-21aten_r1power_cu11:36:331
179950,0migration/127904-21missed_timers08:11:391
179950,0migration/126807-21kthreadcore11:51:391
179950,0migration/126807-21kthreadcore11:51:391
179950,0migration/123113-21sh10:53:211
179950,0migration/118549-21kthreadcore09:36:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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