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2026-06-07 - 11:29
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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 Sun Jun 07, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1689924940,0sleep10-21swapper/119:24:311
1674623626,0sleep20-21swapper/219:22:472
1667823430,0sleep30-21swapper/319:22:003
1669923026,0sleep00-21swapper/019:22:090
16976991010,0cyclictest0-21swapper/021:25:020
339970,0migration/315720-21kthreadcore21:34:553
29805070,0irq/28-eth0-rx-3524-21snmpd23:25:403
8305060,0irq/26-0000:00:31331-21munin-run19:34:343
8305060,0irq/26-0000:00:0-21swapper/320:39:353
339960,0migration/39068-21kthreadcore22:24:543
339960,0migration/38830-21aten_r1power_cu00:19:493
339960,0migration/38721-21sh22:06:053
339960,0migration/332483-21sh22:01:243
339960,0migration/329410-21irqrtprio19:54:523
339960,0migration/316580-21kthreadcore23:44:543
29805060,0irq/28-eth0-rx-9514-21ssh23:21:523
29805060,0irq/28-eth0-rx-27035-21iostat23:14:523
29805060,0irq/28-eth0-rx-16419-21iostat_ios00:04:523
29805060,0irq/28-eth0-rx-12674-21python19:39:593
29805060,0irq/28-eth0-rx-0-21swapper/300:25:203
169879964,0cyclictest28235-21diskmemload21:33:502
169769964,0cyclictest32737-21awk19:34:510
339950,0migration/35178-21sh22:42:313
339950,0migration/331285-21kthreadcore20:39:533
339950,0migration/327213-21runrttasks23:33:083
339950,0migration/32607-21timerwakeupswit21:25:003
339950,0migration/325345-21fschecks_time20:14:493
339950,0migration/323852-21df_abs22:54:503
339950,0migration/322451-21kthreadcore20:09:543
339950,0migration/320507-21fschecks_time00:44:493
339950,0migration/314466-21kthreadcore22:09:563
339950,0migration/312327-21kthreadcore20:04:523
339950,0migration/31213-21kthreadcore20:19:533
329950,0watchdog/38522-21cut20:44:543
329950,0watchdog/35833-21yum19:35:023
329950,0watchdog/329343-21users21:40:033
329950,0watchdog/30-21swapper/320:29:543
329950,0watchdog/30-21swapper/300:11:553
29815050,0irq/29-eth0-tx-9862-21ssh22:09:152
29815050,0irq/29-eth0-tx-7637-21kthreadcore23:19:552
29815050,0irq/29-eth0-tx-3082-21chrt22:23:062
29815050,0irq/29-eth0-tx-29061-21ssh22:38:062
29815050,0irq/29-eth0-tx-2678-21ssh23:35:542
29815050,0irq/29-eth0-tx-23837-21munin-node00:09:562
29815050,0irq/29-eth0-tx-20631-21ssh21:35:142
29815050,0irq/29-eth0-tx-19699-21munin-node00:44:552
29815050,0irq/29-eth0-tx-17943-21fschecks_time23:09:492
29815050,0irq/29-eth0-tx-14330-21ssh00:03:002
29815050,0irq/29-eth0-tx-0-21swapper/223:45:302
29815050,0irq/29-eth0-tx-0-21swapper/223:16:512
29815050,0irq/29-eth0-tx-0-21swapper/222:58:582
29815050,0irq/29-eth0-tx-0-21swapper/222:44:522
29815050,0irq/29-eth0-tx-0-21swapper/200:41:062
29805050,0irq/28-eth0-rx-9140-21grep23:04:513
29805050,0irq/28-eth0-rx-26728-21cut23:49:553
29805050,0irq/28-eth0-rx-2315-21munin-node00:34:583
29805050,0irq/28-eth0-rx-21099-21tr19:49:483
29805050,0irq/28-eth0-rx-14854-21ssh22:49:443
29805050,0irq/28-eth0-rx-13681-21cut20:49:533
29805050,0irq/28-eth0-rx-13316-21fschecks_time22:29:503
29805050,0irq/28-eth0-rx-12303-21taskset21:31:283
29805050,0irq/28-eth0-rx-0-21swapper/323:59:513
29805050,0irq/28-eth0-rx-0-21swapper/323:09:533
29805050,0irq/28-eth0-rx-0-21swapper/322:59:543
29805050,0irq/28-eth0-rx-0-21swapper/322:34:543
29805050,0irq/28-eth0-rx-0-21swapper/322:20:083
29805050,0irq/28-eth0-rx-0-21swapper/321:58:193
29805050,0irq/28-eth0-rx-0-21swapper/321:51:103
29805050,0irq/28-eth0-rx-0-21swapper/321:44:483
29805050,0irq/28-eth0-rx-0-21swapper/319:45:003
29805050,0irq/28-eth0-rx-0-21swapper/300:50:163
29805050,0irq/28-eth0-rx-0-21swapper/300:39:533
29805050,0irq/28-eth0-rx-0-21swapper/300:31:093
259950,0migration/29601-21kernelversion21:49:512
259950,0migration/29497-21sh23:04:512
259950,0migration/2484-21idleruntime21:04:512
259950,0migration/24208-21latency_hist23:39:362
259950,0migration/223025-21sh00:08:082
259950,0migration/217279-21latency_hist20:09:352
259950,0migration/213198-21kthreadcore22:09:562
249950,0watchdog/212097-21ssh22:28:592
179950,0migration/18608-21kthreadcore19:39:521
179950,0migration/131895-21dump-pmu-power22:59:361
179950,0migration/126778-21sh23:31:571
179950,0migration/124812-21kthreadcore00:44:551
179950,0migration/123118-21needreboot19:24:541
179950,0migration/11674-21kthreadcore21:44:551
169879955,0cyclictest0-21swapper/200:49:572
169879950,0cyclictest0-21swapper/223:57:182
169879950,0cyclictest0-21swapper/222:42:532
169799954,0cyclictest32131-21grep00:29:551
169799954,0cyclictest29967-21sadc23:54:361
169799950,0cyclictest0-21swapper/122:04:531
169769955,0cyclictest41ktimersoftd/023:19:010
169769955,0cyclictest0-21swapper/022:49:420
169769953,0cyclictest9302-21sh23:21:170
169769953,0cyclictest8845-21df23:04:500
169769953,0cyclictest8207-21sh00:18:420
169769953,0cyclictest7717-21perl21:09:490
169769953,0cyclictest7686-21ps19:39:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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