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2025-12-01 - 22:26
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Mon Dec 01, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
540224635,0sleep20-21swapper/206:16:022
471924126,0sleep00-21swapper/006:14:440
533823728,0sleep30-21swapper/306:15:193
553923526,0sleep10-21swapper/106:17:371
5763991010,0cyclictest24810-21awk11:34:372
57619970,0cyclictest6929-21cut08:09:370
29925070,0irq/32-eth0-rx-0-21swapper/311:17:493
57639966,0cyclictest17248-21diskmemload11:18:332
57629966,0cyclictest0-21swapper/107:24:401
4160,0ktimersoftd/00-21swapper/009:39:370
339960,0migration/37559-21munin-node11:24:373
339960,0migration/35854-21unixbench_singl07:44:523
329960,0watchdog/35296-21ssh09:26:483
329960,0watchdog/3299250irq/32-eth0-rx-11:44:323
329960,0watchdog/3299250irq/32-eth0-rx-10:09:323
329960,0watchdog/3299250irq/32-eth0-rx-09:42:363
329960,0watchdog/327858-21sed09:19:403
329960,0watchdog/310695-21munin-node11:04:403
329960,0watchdog/30-21swapper/310:59:203
329960,0watchdog/30-21swapper/310:58:003
329960,0watchdog/30-21swapper/310:40:083
329960,0watchdog/30-21swapper/310:27:443
329960,0watchdog/30-21swapper/310:01:563
329960,0watchdog/30-21swapper/309:51:163
329960,0watchdog/30-21swapper/309:47:523
329960,0watchdog/30-21swapper/309:38:323
329960,0watchdog/30-21swapper/308:49:363
329960,0watchdog/30-21swapper/308:31:083
329960,0watchdog/30-21swapper/308:22:243
329960,0watchdog/30-21swapper/307:19:403
329960,0watchdog/30-21swapper/306:54:203
329960,0watchdog/30-21swapper/306:34:403
29935060,0irq/33-eth0-tx-25584-21perl09:59:342
29935060,0irq/33-eth0-tx-0-21swapper/008:14:380
29935060,0irq/33-eth0-tx-0-21swapper/007:37:180
29935060,0irq/33-eth0-tx-0-21swapper/007:09:120
29925060,0irq/32-eth0-rx-558-21perl11:39:343
29925060,0irq/32-eth0-rx-2300-21tr11:19:383
29925060,0irq/32-eth0-rx-20936-21grep11:29:383
29925060,0irq/32-eth0-rx-0-21swapper/311:34:383
29925060,0irq/32-eth0-rx-0-21swapper/310:51:523
29925060,0irq/32-eth0-rx-0-21swapper/310:45:033
29925060,0irq/32-eth0-rx-0-21swapper/310:35:423
29925060,0irq/32-eth0-rx-0-21swapper/310:17:143
29925060,0irq/32-eth0-rx-0-21swapper/309:30:093
29925060,0irq/32-eth0-rx-0-21swapper/309:01:553
29925060,0irq/32-eth0-rx-0-21swapper/308:55:123
29925060,0irq/32-eth0-rx-0-21swapper/308:45:363
149960,0migration/08955-21sh08:31:230
149960,0migration/032088-21latency_hist11:39:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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