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2026-05-13 - 08:22
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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 Wed May 13, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1593923626,0sleep20-21swapper/219:21:532
1588723425,0sleep10-21swapper/119:21:121
1582123228,0sleep00-21swapper/019:20:270
1582422824,0sleep30-21swapper/319:20:303
35160,0ktimersoftd/30-21swapper/300:19:593
339960,0migration/38904-21sh00:36:053
339960,0migration/38377-21kthreadcore20:22:513
339960,0migration/325991-21sh00:45:293
339960,0migration/322270-21ntp_offset19:22:523
339960,0migration/318266-21unixbench-2d23:42:583
339960,0migration/311715-21sh22:43:053
329960,0watchdog/311847-21nfs_client21:07:513
329960,0watchdog/30-21swapper/300:22:523
29815060,0irq/29-eth0-tx-30532-21munin-node21:42:552
29805060,0irq/28-eth0-rx-31760-21iostat_ios21:42:503
29805060,0irq/28-eth0-rx-29089-21irqstats21:22:533
29805060,0irq/28-eth0-rx-15848-21tr21:52:443
29805060,0irq/28-eth0-rx-10344-21perl23:22:493
160709966,0cyclictest31951-21awk20:17:472
160689965,0cyclictest16803-21ssh23:24:400
8305050,0irq/26-0000:00:0-21swapper/222:57:332
339950,0migration/38729-21kernelversion23:02:503
339950,0migration/3816-21aten_r1power_po23:17:443
339950,0migration/330892-21cpuspeed_turbos19:32:453
339950,0migration/330437-21kthreadcore00:47:513
339950,0migration/328557-21kthreadcore19:27:513
339950,0migration/32748-21timerwakeupswit22:37:583
339950,0migration/326622-21kthreadcore21:57:513
339950,0migration/326563-21aten_r1power_vo22:17:443
339950,0migration/324406-21kthreadcore00:07:503
339950,0migration/324406-21kthreadcore00:07:503
339950,0migration/322806-21kthreadcore19:47:503
339950,0migration/322183-21switchtime23:07:593
339950,0migration/317989-21kthreadcore19:42:503
339950,0migration/317680-21munin-node20:52:493
339950,0migration/317469-21kthreadcore21:12:513
339950,0migration/315433-21irqrtprio00:02:503
339950,0migration/314102-21kthreadcore22:27:503
339950,0migration/312336-21runrttasks21:31:443
329950,0watchdog/36905-21ssh00:16:403
329950,0watchdog/329276-21cut19:52:473
329950,0watchdog/326240-21kthreadcore22:52:523
329950,0watchdog/325282-21kthreadcore21:37:513
329950,0watchdog/314165-21iostat21:32:473
329950,0watchdog/30-21swapper/300:38:043
29815050,0irq/29-eth0-tx-6082-21ssh23:00:252
29815050,0irq/29-eth0-tx-31003-21munin-node21:02:520
29815050,0irq/29-eth0-tx-2630-21munin-node22:22:542
29815050,0irq/29-eth0-tx-22554-21munin-node00:07:582
29815050,0irq/29-eth0-tx-22554-21munin-node00:07:582
29815050,0irq/29-eth0-tx-22484-21ssh21:53:422
29815050,0irq/29-eth0-tx-19956-21munin-node19:47:470
29815050,0irq/29-eth0-tx-16280-21munin-node19:22:570
29815050,0irq/29-eth0-tx-10095-21ssh22:07:482
29815050,0irq/29-eth0-tx-0-21swapper/223:57:512
29815050,0irq/29-eth0-tx-0-21swapper/223:22:412
29815050,0irq/29-eth0-tx-0-21swapper/222:42:452
29815050,0irq/29-eth0-tx-0-21swapper/222:37:462
29815050,0irq/29-eth0-tx-0-21swapper/222:22:152
29815050,0irq/29-eth0-tx-0-21swapper/221:57:512
29815050,0irq/29-eth0-tx-0-21swapper/200:47:102
29815050,0irq/29-eth0-tx-0-21swapper/021:23:080
29815050,0irq/29-eth0-tx-0-21swapper/021:16:590
29805050,0irq/28-eth0-rx-8871-21taskset20:01:103
29805050,0irq/28-eth0-rx-8127-21ssh22:05:363
29805050,0irq/28-eth0-rx-27337-21kthreadcore20:57:503
29805050,0irq/28-eth0-rx-26370-21uname00:27:513
29805050,0irq/28-eth0-rx-0-21swapper/323:55:033
29805050,0irq/28-eth0-rx-0-21swapper/323:51:093
29805050,0irq/28-eth0-rx-0-21swapper/323:32:143
29805050,0irq/28-eth0-rx-0-21swapper/323:17:313
29805050,0irq/28-eth0-rx-0-21swapper/323:01:553
29805050,0irq/28-eth0-rx-0-21swapper/322:47:513
29805050,0irq/28-eth0-rx-0-21swapper/322:32:453
29805050,0irq/28-eth0-rx-0-21swapper/322:22:493
29805050,0irq/28-eth0-rx-0-21swapper/322:09:483
29805050,0irq/28-eth0-rx-0-21swapper/321:52:083
259950,0migration/27509-21sh00:17:422
259950,0migration/223955-21taskset23:12:022
259950,0migration/223379-21kthreadcore23:47:512
259950,0migration/222688-21kthreadcore22:32:502
259950,0migration/217496-21munin-node20:07:472
259950,0migration/216298-21timerwakeupswit00:38:012
259950,0migration/210266-21sh23:39:232
179950,0migration/16535-21kthreadcore23:17:511
179950,0migration/1456-21pmu-power23:32:541
179950,0migration/128219-21munin-node19:52:451
179950,0migration/125629-21sshd23:30:161
179950,0migration/120156-21sh21:34:201
179950,0migration/118653-21sh23:43:391
179950,0migration/116429-21sh00:38:011
179950,0migration/115852-21cpuspeed_turbos21:52:441
179950,0migration/115791-21munin-node20:03:001
179950,0migration/112872-21irqrtprio22:27:491
179950,0migration/11180-21switchtime20:37:581
179950,0migration/111264-21munin-node22:42:531
160709954,0cyclictest28170-21awk00:47:492
160709950,0cyclictest0-21swapper/221:32:572
160709950,0cyclictest0-21swapper/221:30:262
160699955,0cyclictest27282-21diskmemload21:24:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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