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2026-05-14 - 10:16
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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 Thu May 14, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1807525038,0sleep20-21swapper/219:20:592
1786724332,0sleep00-21swapper/019:18:330
1129523828,0sleep30-21swapper/319:17:403
1815523626,0sleep10-21swapper/119:21:551
182909976,0cyclictest5624-21ssh23:37:490
4160,0ktimersoftd/00-21swapper/000:19:490
339960,0migration/38959-21sh00:15:503
339960,0migration/36788-21sh22:42:023
339960,0migration/328586-21sh00:45:583
339960,0migration/325456-21sh00:07:513
339960,0migration/31358-21runrttasks21:59:423
339960,0migration/310430-21sh22:05:403
329960,0watchdog/33287-21needreboot20:37:563
29805060,0irq/28-eth0-rx-21350-21grep00:22:543
29805060,0irq/28-eth0-rx-11106-21iostat00:17:533
29805060,0irq/28-eth0-rx-0-21swapper/321:27:593
19160,0ktimersoftd/10-21swapper/100:19:491
8305050,0irq/26-0000:00:30749-21ssh22:52:582
8305050,0irq/26-0000:00:0-21swapper/221:12:372
339950,0migration/38152-21latency_hist21:07:373
339950,0migration/3715-21diskmemload22:57:453
339950,0migration/33917-21sh23:34:233
339950,0migration/331157-21munin-node21:22:553
339950,0migration/330477-21timerwakeupswit21:38:023
339950,0migration/329976-21kthreadcore00:27:543
339950,0migration/329241-21kthreadcore19:27:543
339950,0migration/324334-21kthreadcore20:32:543
339950,0migration/323194-21fschecks_count23:47:513
339950,0migration/32249-21kthreadcore21:42:553
339950,0migration/322255-21missed_timers00:02:573
339950,0migration/320424-21taskset23:27:493
339950,0migration/318537-21sh00:38:023
339950,0migration/317923-21kthreadcore22:47:553
339950,0migration/317792-21kthreadcore21:32:563
339950,0migration/317487-21missed_timers20:02:543
339950,0migration/317045-21kthreadcore22:27:553
339950,0migration/316637-21munin-node21:12:533
339950,0migration/315236-21taskset21:12:213
339950,0migration/315007-21latency_hist19:42:373
339950,0migration/312496-21munin-node22:07:523
339950,0migration/311484-21kthreadcore22:42:553
329950,0watchdog/329941-21cut20:57:563
329950,0watchdog/328104-21kthreadcore20:12:563
329950,0watchdog/326773-21sh22:13:053
329950,0watchdog/30-21swapper/321:18:003
29815050,0irq/29-eth0-tx-5797-21tr22:02:542
29815050,0irq/29-eth0-tx-4603-21munin-node20:42:550
29815050,0irq/29-eth0-tx-4343-21munin-node19:58:000
29815050,0irq/29-eth0-tx-27880-21ssh00:44:012
29815050,0irq/29-eth0-tx-27553-21ssh22:15:132
29815050,0irq/29-eth0-tx-26755-21munin-node23:12:542
29815050,0irq/29-eth0-tx-25122-21ssh21:54:482
29815050,0irq/29-eth0-tx-11688-21ssh00:37:042
29815050,0irq/29-eth0-tx-0-21swapper/223:57:472
29815050,0irq/29-eth0-tx-0-21swapper/223:52:392
29815050,0irq/29-eth0-tx-0-21swapper/223:30:362
29815050,0irq/29-eth0-tx-0-21swapper/222:58:242
29815050,0irq/29-eth0-tx-0-21swapper/221:37:522
29805050,0irq/28-eth0-rx-8945-21kthreadcore23:37:543
29805050,0irq/28-eth0-rx-7321-21kthreadcore22:22:543
29805050,0irq/28-eth0-rx-6449-21ssh23:55:023
29805050,0irq/28-eth0-rx-30399-21gltestperf00:47:513
29805050,0irq/28-eth0-rx-27086-21df23:12:513
29805050,0irq/28-eth0-rx-17900-21open_files23:22:593
29805050,0irq/28-eth0-rx-10325-21iostat_ios21:47:533
29805050,0irq/28-eth0-rx-10311-21fschecks_time23:02:503
29805050,0irq/28-eth0-rx-0-21swapper/323:58:193
29805050,0irq/28-eth0-rx-0-21swapper/323:07:563
29805050,0irq/28-eth0-rx-0-21swapper/322:52:543
29805050,0irq/28-eth0-rx-0-21swapper/321:52:553
29805050,0irq/28-eth0-rx-0-21swapper/320:00:213
259950,0migration/29708-21latency_hist00:17:382
259950,0migration/27270-21kthreadcore22:22:542
259950,0migration/24101-21timerwakeupswit21:23:042
259950,0migration/232221-21kthreadcore23:32:562
259950,0migration/222290-21switchtime22:48:032
259950,0migration/221337-21sh22:30:442
259950,0migration/219891-21sh23:26:582
259950,0migration/214556-21kthreadcore20:47:552
182989955,0cyclictest0-21swapper/222:45:542
182989955,0cyclictest0-21swapper/221:58:172
182989955,0cyclictest0-21swapper/219:37:492
182989953,0cyclictest3250-21irqbalance21:49:042
182989950,0cyclictest0-21swapper/223:07:402
182989950,0cyclictest0-21swapper/222:32:402
182989950,0cyclictest0-21swapper/200:40:502
182919955,0cyclictest0-21swapper/121:47:531
182919950,0cyclictest0-21swapper/122:20:311
182909955,0cyclictest0-21swapper/022:01:010
182909955,0cyclictest0-21swapper/000:49:050
182909950,0cyclictest0-21swapper/023:17:570
182909950,0cyclictest0-21swapper/022:05:540
182909950,0cyclictest0-21swapper/021:35:100
182909950,0cyclictest0-21swapper/021:23:580
182909950,0cyclictest0-21swapper/000:39:280
182909950,0cyclictest0-21swapper/000:09:020
179950,0migration/16442-21aten_r1power_po21:27:501
179950,0migration/14840-21cpuspeed_turbos20:42:481
179950,0migration/130632-21munin-node00:47:531
179950,0migration/129124-21aten2.4-expect23:32:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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