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2026-08-17 - 04:02
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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 Aug 17, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2557124939,0sleep30-21swapper/319:29:213
2557523727,0sleep20-21swapper/219:29:242
2537523723,0sleep00-21swapper/019:27:050
2553623223,0sleep10-21swapper/119:28:591
25731991111,0cyclictest30764-21sensors22:00:462
339960,0migration/322305-21sh00:45:573
339960,0migration/322305-21sh00:45:573
339960,0migration/321032-21sh21:38:073
339960,0migration/320880-21sh22:54:323
339960,0migration/315889-21sh21:55:313
29815060,0irq/29-eth0-tx-8496-21munin-node21:10:400
29805060,0irq/28-eth0-rx-5888-21kthreadcore22:05:433
29805060,0irq/28-eth0-rx-15368-21sort23:10:383
29805060,0irq/28-eth0-rx-0-21swapper/323:57:433
257319960,0cyclictest0-21swapper/223:02:152
149960,0migration/08731-21sh23:42:430
149960,0migration/07969-21sh00:58:420
149960,0migration/023801-21sh21:59:190
149960,0migration/016480-21taskset22:12:230
8305050,0irq/26-0000:00:26619-21diskstats20:15:383
8305050,0irq/26-0000:00:15112-21cat22:50:432
339950,0migration/38276-21kthreadcore00:00:423
339950,0migration/38269-21kthreadcore20:45:433
339950,0migration/36524-21taskset21:49:093
339950,0migration/35957-21kthreadcore22:25:433
339950,0migration/332310-21kthreadcore20:40:423
339950,0migration/332239-21diskmemload22:03:593
339950,0migration/331189-21df_abs00:35:373
339950,0migration/330874-21fschecks_time23:00:373
339950,0migration/330674-21fschecks_count21:25:383
339950,0migration/329912-21kthreadcore23:35:443
339950,0migration/329483-21kthreadcore21:00:423
339950,0migration/32913-21kthreadcore19:55:413
339950,0migration/328781-21kthreadcore22:20:423
339950,0migration/326559-21sh22:36:203
339950,0migration/322886-21munin-node00:30:393
339950,0migration/318854-21kthreadcore00:25:453
339950,0migration/318533-21fschecks_time22:15:373
339950,0migration/317410-21kthreadcore21:15:433
339950,0migration/315304-21sh21:54:273
339950,0migration/310542-21kthreadcore20:25:423
329950,0watchdog/326609-21kthreadcore22:55:433
329950,0watchdog/321603-21timerandwakeup19:45:513
329950,0watchdog/318323-21ssh22:32:193
329950,0watchdog/30-21swapper/321:20:433
329950,0watchdog/30-21swapper/319:30:423
29815050,0irq/29-eth0-tx-7042-21munin-node00:40:392
29815050,0irq/29-eth0-tx-667-21cut00:15:442
29815050,0irq/29-eth0-tx-26199-21munin-node20:15:380
29815050,0irq/29-eth0-tx-20441-21ssh00:25:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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