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2026-05-13 - 12:25
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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 792 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
160699955,0cyclictest0-21swapper/123:40:481
160699955,0cyclictest0-21swapper/122:01:381
160699955,0cyclictest0-21swapper/100:03:591
160699954,0cyclictest5647-21crond21:07:321
160699950,0cyclictest0-21swapper/123:12:351
160699950,0cyclictest0-21swapper/122:35:511
160699950,0cyclictest0-21swapper/119:27:461
160689950,0cyclictest0-21swapper/023:54:560
160689950,0cyclictest0-21swapper/022:20:110
160689950,0cyclictest0-21swapper/000:03:170
169950,0watchdog/122404-21grep22:12:521
169950,0watchdog/10-21swapper/121:27:511
149950,0migration/07490-21kthreadcore23:37:520
149950,0migration/05521-21unixbench_singl00:13:010
149950,0migration/04368-21sh22:41:430
149950,0migration/04117-21kthreadcore20:42:480
149950,0migration/031327-21taskset21:59:130
149950,0migration/030471-21sh21:42:360
149950,0migration/025225-21kthreadcore21:17:500
149950,0migration/023665-21kthreadcore23:47:510
149950,0migration/023230-21kthreadcore20:32:500
149950,0migration/023139-21kthreadcore22:32:500
149950,0migration/022317-21fschecks_count21:37:470
149950,0migration/020737-21kthreadcore22:12:510
149950,0migration/01826-21taskset20:42:060
149950,0migration/018171-21timerandwakeup23:42:580
149950,0migration/018038-21kthreadcore21:52:490
149950,0migration/016736-21kthreadcore22:47:510
149950,0migration/016399-21kthreadcore20:27:500
149950,0migration/015141-21kthreadcore21:32:490
149950,0migration/015100-21kthreadcore20:47:500
149950,0migration/014491-21taskset21:50:240
149950,0migration/013967-21sh23:03:160
149950,0migration/011971-21kthreadcore22:07:510
149950,0migration/011675-21sh21:30:050
8305040,0irq/26-0000:00:0-21swapper/220:57:502
339940,0migration/37564-21kthreadcore23:37:523
339940,0migration/329658-21pmu-power20:12:523
339940,0migration/323549-21kthreadcore20:32:503
339940,0migration/319692-21kthreadcore22:12:513
329940,0watchdog/34472-21latency21:02:513
329940,0watchdog/30-21swapper/320:48:433
329940,0watchdog/30-21swapper/320:18:233
329940,0watchdog/30-21swapper/319:37:513
29815040,0irq/29-eth0-tx-919-21ssh00:32:362
29815040,0irq/29-eth0-tx-28900-21ssh23:52:352
29815040,0irq/29-eth0-tx-25359-21fschecks_count00:27:472
29815040,0irq/29-eth0-tx-0-21swapper/223:42:582
29815040,0irq/29-eth0-tx-0-21swapper/223:32:372
29815040,0irq/29-eth0-tx-0-21swapper/223:28:172
29815040,0irq/29-eth0-tx-0-21swapper/223:17:512
29815040,0irq/29-eth0-tx-0-21swapper/223:05:002
29815040,0irq/29-eth0-tx-0-21swapper/222:27:402
29815040,0irq/29-eth0-tx-0-21swapper/222:02:382
29815040,0irq/29-eth0-tx-0-21swapper/200:02:442
29815040,0irq/29-eth0-tx-0-21swapper/021:11:580
29815040,0irq/29-eth0-tx-0-21swapper/020:12:460
29815040,0irq/29-eth0-tx-0-21swapper/019:44:330
29805040,0irq/28-eth0-rx-0-21swapper/323:59:313
29805040,0irq/28-eth0-rx-0-21swapper/323:34:073
29805040,0irq/28-eth0-rx-0-21swapper/320:27:443
259940,0migration/24534-21smart_nvme0n119:32:552
259940,0migration/227521-21sh21:22:412
259940,0migration/219776-21kthreadcore19:22:502
259940,0migration/217062-21munin-node20:52:472
259940,0migration/214575-21kthreadcore20:27:502
259940,0migration/213915-21cpuspeed_turbos22:47:462
259940,0migration/210108-21fschecks_time20:47:452
249940,0watchdog/25515-21ksmtuned21:06:072
249940,0watchdog/222571-21perl21:37:472
249940,0watchdog/219976-21aten_r1power_cu19:47:432
249940,0watchdog/21855-21cat00:12:522
249940,0watchdog/217338-21if_eth1.300:22:522
249940,0watchdog/20-21swapper/222:12:522
249940,0watchdog/20-21swapper/221:47:432
249940,0watchdog/20-21swapper/220:34:272
179940,0migration/18619-21if_err_eth1.300:17:491
179940,0migration/18571-21uptime19:57:571
179940,0migration/17687-21sh22:04:231
179940,0migration/16691-21if_eth1.219:37:491
179940,0migration/15707-21sh00:13:231
179940,0migration/13584-21kthreadcore20:17:501
179940,0migration/132387-21kthreadcore00:47:521
179940,0migration/130585-21latency_hist19:32:321
179940,0migration/126611-21kthreadcore20:57:501
179940,0migration/123960-21kthreadcore21:37:511
179940,0migration/121256-21if_eth020:32:481
179940,0migration/120355-21kthreadcore00:22:541
179940,0migration/119535-21kthreadcore20:07:501
179940,0migration/118365-21kthreadcore19:22:491
179940,0migration/117039-21df_abs20:52:461
179940,0migration/115505-21missed_timers23:22:541
179940,0migration/111014-21kthreadcore22:07:501
179940,0migration/110466-21kthreadcore21:07:501
160709943,0cyclictest7308-21irqrtprio21:07:492
160709943,0cyclictest6783-21awk20:22:492
160709943,0cyclictest3571-21lldpd19:43:002
160709943,0cyclictest3571-21lldpd19:42:002
160709943,0cyclictest3524-21snmpd21:17:072
160709943,0cyclictest3524-21snmpd20:42:512
160709943,0cyclictest3151-21awk19:57:472
160709943,0cyclictest24698-21awk20:12:472
160709943,0cyclictest24546-21awk19:27:482
160709943,0cyclictest21477-21awk21:17:482
160709942,0cyclictest3524-21snmpd19:52:502
160709940,0cyclictest0-21swapper/223:12:452
160699944,0cyclictest0-21swapper/122:25:361
160699944,0cyclictest0-21swapper/100:34:151
160699943,0cyclictest3524-21snmpd23:48:381
160699943,0cyclictest3524-21snmpd21:50:371
160699943,0cyclictest3524-21snmpd19:43:051
160699943,0cyclictest32052-21awk22:57:501
160699943,0cyclictest25978-21awk00:27:501
160699943,0cyclictest23286-21awk22:52:491
160699943,0cyclictest21403-21awk21:17:471
160699943,0cyclictest14585-21sed22:47:471
160689944,0cyclictest0-21swapper/023:13:570
160689944,0cyclictest0-21swapper/000:33:050
160689943,0cyclictest3571-21lldpd20:54:300
160689943,0cyclictest3571-21lldpd19:38:000
160689943,0cyclictest3524-21snmpd19:55:350
160689943,0cyclictest3250-21irqbalance23:59:590
160689943,0cyclictest3250-21irqbalance23:18:590
160689943,0cyclictest3250-21irqbalance00:44:590
160689943,0cyclictest30888-21sadc00:12:330
160689943,0cyclictest30888-21sadc00:12:330
160689943,0cyclictest3079-21awk19:57:470
160689943,0cyclictest19229-21awk23:27:490
160689943,0cyclictest16923-21awk23:07:490
160689943,0cyclictest11430-21cut22:27:440
160689942,0cyclictest4852-21kworker/0:000:47:560
169940,0watchdog/12444-21df20:42:431
169940,0watchdog/122798-21ssh23:08:481
169940,0watchdog/112893-21kthreadcore23:02:521
169940,0watchdog/11248-21ssh22:19:361
169940,0watchdog/10-21swapper/122:37:481
169940,0watchdog/10-21swapper/121:42:471
169940,0watchdog/10-21swapper/120:22:511
149940,0migration/0779-21kthreadcore19:32:500
149940,0migration/07161-21kthreadcore22:42:490
149940,0migration/026798-21runrttasks23:32:450
149940,0migration/019783-21kthreadcore20:07:500
149940,0migration/017225-21sh00:40:100
149940,0migration/015280-21pmu-power20:02:530
329930,0watchdog/30-21swapper/321:17:433
329930,0watchdog/30-21swapper/320:37:513
329930,0watchdog/30-21swapper/320:07:553
29815030,0irq/29-eth0-tx-0-21swapper/019:27:480
29805030,0irq/28-eth0-rx-0-21swapper/320:43:413
29805030,0irq/28-eth0-rx-0-21swapper/320:02:443
249930,0watchdog/20-21swapper/220:02:512
160709933,0cyclictest28921-21ps20:37:502
160699933,0cyclictest3571-21lldpd20:13:301
160699932,0cyclictest6652-21cut23:57:501
160699932,0cyclictest3524-21snmpd23:52:381
160699932,0cyclictest27388-21cut00:07:511
160699932,0cyclictest27388-21cut00:07:511
160699932,0cyclictest21185-21sed19:47:491
160699932,0cyclictest19163-21python20:27:561
160689933,0cyclictest4852-21kworker/0:000:27:520
160689933,0cyclictest4852-21kworker/0:000:22:340
160689933,0cyclictest4852-21kworker/0:000:17:440
160689933,0cyclictest15258-21kworker/0:220:17:350
160689933,0cyclictest10393-21kworker/0:122:57:340
160689933,0cyclictest10393-21kworker/0:122:52:380
160689933,0cyclictest10393-21kworker/0:122:23:000
160689933,0cyclictest10393-21kworker/0:122:02:360
160689933,0cyclictest10393-21kworker/0:120:57:400
160689930,0cyclictest0-21swapper/020:22:340
169930,0watchdog/124774-21switchtime00:43:001
169930,0watchdog/10-21swapper/121:12:511
169930,0watchdog/10-21swapper/120:47:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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