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2026-06-05 - 20:21
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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 Fri Jun 05, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1955123828,0sleep30-21swapper/307:22:283
1967323723,0sleep00-21swapper/007:23:490
1934323625,0sleep20-21swapper/207:19:592
1935223526,0sleep10-21swapper/107:20:061
8305060,0irq/26-0000:00:9684-21ls11:59:292
339960,0migration/36969-21sh11:38:203
339960,0migration/34904-21aten_r1power_vo10:04:383
339960,0migration/329033-21munin-node11:14:403
339960,0migration/319501-21sh12:21:323
339960,0migration/31334-21fschecks_time10:39:413
339960,0migration/311410-21needreboot11:19:513
29815060,0irq/29-eth0-tx-30017-21kthreadcore09:39:472
29815060,0irq/29-eth0-tx-19804-21munin-node09:54:482
29815060,0irq/29-eth0-tx-11953-21ntp_offset12:34:482
29805060,0irq/28-eth0-rx-13428-21df_inode08:04:423
197979966,0cyclictest83050irq/26-0000:00:11:19:512
197979960,0cyclictest0-21swapper/212:42:532
197979960,0cyclictest0-21swapper/209:39:032
197959965,0cyclictest24332-21kworker/0:208:58:590
197959964,0cyclictest19721-21kworker/0:108:25:330
149960,0migration/023881-21kthreadcore09:54:450
339950,0migration/39198-21irqcore09:29:473
339950,0migration/39088-21taskset11:57:523
339950,0migration/37401-21kthreadcore08:19:473
339950,0migration/37040-21kthreadcore09:44:443
339950,0migration/34678-21munin-node07:54:493
339950,0migration/34653-21kthreadcore09:04:453
339950,0migration/34495-21kthreadcore09:24:443
339950,0migration/34437-21taskset10:04:263
339950,0migration/330602-21kthreadcore07:29:453
339950,0migration/329914-21munin-node07:49:523
339950,0migration/329804-21kthreadcore11:49:483
339950,0migration/328684-21taskset08:59:433
339950,0migration/324626-21kthreadcore10:14:463
339950,0migration/322628-21kthreadcore08:54:453
339950,0migration/321001-21hwlatdetect07:24:433
339950,0migration/320896-21fschecks_time08:09:413
339950,0migration/320550-21kthreadcore10:49:473
339950,0migration/317923-21kthreadcore11:24:463
339950,0migration/316191-21latency_hist11:44:293
339950,0migration/312610-21fschecks_time11:04:423
329950,0watchdog/34070-21ssh12:30:283
329950,0watchdog/3407-21if_err_eth012:49:443
329950,0watchdog/316946-21iostat_ios10:29:433
329950,0watchdog/312201-21ls07:59:553
329950,0watchdog/30-21swapper/311:29:593
29815050,0irq/29-eth0-tx-6644-21grep10:04:442
29815050,0irq/29-eth0-tx-5811-21munin-node07:59:430
29815050,0irq/29-eth0-tx-27950-21cut10:34:462
29815050,0irq/29-eth0-tx-21764-21ssh10:14:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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