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2026-07-24 - 00:17
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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 Thu Jul 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
367324939,0sleep10-21swapper/107:28:161
2913124039,0sleep00-21swapper/007:23:270
328623627,0sleep30-21swapper/307:24:063
345823526,0sleep20-21swapper/207:25:572
3757991111,0cyclictest3524-21snmpd08:11:590
37739970,0cyclictest0-21swapper/211:18:242
29815070,0irq/29-eth0-tx-0-21swapper/211:28:482
37669966,0cyclictest0-21swapper/107:48:471
339960,0migration/35636-21sh12:11:543
339960,0migration/330773-21sh10:51:403
339960,0migration/328116-21munin-node12:03:473
339960,0migration/319638-21munin-node11:23:413
339960,0migration/31111-21sh12:48:303
29815060,0irq/29-eth0-tx-25740-21munin-node08:28:370
29815060,0irq/29-eth0-tx-18409-21munin-node07:38:410
29805060,0irq/28-eth0-rx-27501-21cut11:08:413
29805060,0irq/28-eth0-rx-22176-21cut10:28:373
29805060,0irq/28-eth0-rx-20854-21perl11:43:383
29805060,0irq/28-eth0-rx-17615-21iostat11:03:403
29805060,0irq/28-eth0-rx-16008-21rt-features12:53:433
29805060,0irq/28-eth0-rx-0-21swapper/311:36:313
149960,0migration/09316-21kthreadcore12:13:400
149960,0migration/06619-21sh12:29:500
149960,0migration/026638-21fschecks_time09:13:390
149960,0migration/02369-21sh11:32:460
149960,0migration/014693-21kthreadcore07:33:420
149960,0migration/01322-21fschecks_time08:33:370
8305050,0irq/26-0000:00:11184-21latency_hist07:33:233
8305050,0irq/26-0000:00:0-21swapper/211:48:242
37739955,0cyclictest0-21swapper/212:15:472
37739955,0cyclictest0-21swapper/209:08:482
37669955,0cyclictest0-21swapper/112:05:271
37669955,0cyclictest0-21swapper/111:59:001
37669955,0cyclictest0-21swapper/109:46:151
37669955,0cyclictest0-21swapper/109:03:501
37669950,0cyclictest0-21swapper/111:33:271
37669950,0cyclictest0-21swapper/111:10:071
37669950,0cyclictest0-21swapper/110:06:261
37579955,0cyclictest0-21swapper/009:03:340
37579954,0cyclictest11167-21sh11:38:240
339950,0migration/39121-21kthreadcore10:18:433
339950,0migration/37741-21kthreadcore08:58:403
339950,0migration/36938-21fschecks_time10:38:363
339950,0migration/36643-21taskset10:55:453
339950,0migration/35573-21diskmemload10:37:463
339950,0migration/35211-21fschecks_count11:53:383
339950,0migration/34001-21kthreadcore12:28:433
339950,0migration/328784-21kthreadcore11:28:403
339950,0migration/319923-21irqcore08:23:403
339950,0migration/31907-21munin-node07:48:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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