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2026-04-04 - 12:40
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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 highest latencies:
System rack1slot2.osadl.org (updated Sat Apr 04, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141124635,0sleep10-21swapper/119:17:011
140723826,0sleep20-21swapper/219:16:582
125723524,0sleep00-21swapper/019:15:120
158923127,0sleep30-21swapper/319:19:073
339970,0migration/327130-21taskset00:33:393
16829977,0cyclictest3524-21snmpd20:59:160
339960,0migration/35050-21sh22:28:263
339960,0migration/3353-21sh00:16:423
339960,0migration/328350-21munin-node23:19:323
339960,0migration/325596-21sh22:00:423
339960,0migration/324818-21sh22:59:073
339960,0migration/321926-21munin-node22:19:363
339960,0migration/320691-21sh22:34:433
339960,0migration/317871-21sh23:12:423
339960,0migration/313356-21idleruntime23:29:343
329960,0watchdog/332652-21kthreadcore19:59:383
329960,0watchdog/332033-21cut19:39:343
29815060,0irq/29-eth0-tx-2301-21munin-node20:49:310
29805060,0irq/28-eth0-rx-19988-21iostat_ios23:14:373
16849960,0cyclictest0-21swapper/223:09:442
16849960,0cyclictest0-21swapper/221:54:412
149960,0migration/06523-21kthreadcore22:09:370
149960,0migration/05921-21switchtime23:59:450
149960,0migration/03515-21munin-node19:19:360
149960,0migration/021152-21sh22:35:030
149960,0migration/019269-21sh23:30:200
149960,0migration/018527-21latency00:44:390
149960,0migration/017697-21sh21:57:490
339950,0migration/39498-21sh21:54:073
339950,0migration/38439-21munin-node21:34:363
339950,0migration/37417-21kthreadcore00:19:363
339950,0migration/36979-21munin-node20:29:353
339950,0migration/33548-21aten_r1power_po22:09:313
339950,0migration/332509-21munin-node22:44:333
339950,0migration/329592-21sh23:39:283
339950,0migration/326624-21munin-node19:54:443
339950,0migration/326071-21latency20:39:373
339950,0migration/32603-21kthreadcore23:59:383
339950,0migration/325320-21munin-node21:44:313
339950,0migration/324428-21munin-node21:04:313
339950,0migration/321520-21fschecks_count23:34:333
339950,0migration/32113-21latency_hist20:49:193
339950,0migration/320125-21taskset21:20:173
339950,0migration/319116-21smart_nvme0n119:49:413
339950,0migration/318731-21kthreadcore20:59:363
339950,0migration/314669-21kthreadcore20:54:363
339950,0migration/313924-21kthreadcore00:04:383
339950,0migration/311730-21kthreadcore19:24:363
339950,0migration/310108-21cpuspeed_turbos21:54:313
329950,0watchdog/315301-21sh22:51:383
329950,0watchdog/30-21swapper/319:29:383
329950,0watchdog/30-21swapper/300:27:313
29815050,0irq/29-eth0-tx-31939-21kthreadcore22:24:362
29815050,0irq/29-eth0-tx-23579-21munin-node19:34:430
29815050,0irq/29-eth0-tx-2076-21munin-node20:04:350
29815050,0irq/29-eth0-tx-20303-21munin-node20:39:360
29815050,0irq/29-eth0-tx-20115-21ssh21:20:150
29815050,0irq/29-eth0-tx-18758-21munin-node23:14:342
29815050,0irq/29-eth0-tx-1392-21munin-node23:04:352
29815050,0irq/29-eth0-tx-0-21swapper/223:19:492
29815050,0irq/29-eth0-tx-0-21swapper/221:44:432
29815050,0irq/29-eth0-tx-0-21swapper/221:27:012
29815050,0irq/29-eth0-tx-0-21swapper/200:04:402
29815050,0irq/29-eth0-tx-0-21swapper/020:19:340
29805050,0irq/28-eth0-rx-6619-21kthreadcore20:49:363
29805050,0irq/28-eth0-rx-6314-21runrttasks20:34:353
29805050,0irq/28-eth0-rx-5052-21unixbench_singl21:29:453
29805050,0irq/28-eth0-rx-25106-21ssh00:14:143
29805050,0irq/28-eth0-rx-16934-21kthreadcore22:14:383
29805050,0irq/28-eth0-rx-12729-21aten_r1power_fr00:44:323
29805050,0irq/28-eth0-rx-0-21swapper/323:51:453
29805050,0irq/28-eth0-rx-0-21swapper/323:24:353
29805050,0irq/28-eth0-rx-0-21swapper/323:00:173
29805050,0irq/28-eth0-rx-0-21swapper/322:39:363
29805050,0irq/28-eth0-rx-0-21swapper/300:39:213
259950,0migration/29745-21sendmail_mailqu22:09:412
259950,0migration/24010-21sh23:39:492
259950,0migration/228214-21kthreadcore22:59:382
259950,0migration/211585-21kthreadcore22:49:382
259950,0migration/210335-21kthreadcore21:34:382
249950,0watchdog/23421-21kthreadcore00:19:352
249950,0watchdog/220308-21kthreadcore19:29:382
179950,0migration/15774-21munin-node22:44:441
179950,0migration/15016-21munin-node19:39:431
179950,0migration/132193-21sh00:14:571
179950,0migration/126663-21kthreadcore22:39:371
179950,0migration/11336-21kthreadcore21:09:361
179950,0migration/111669-21kthreadcore21:54:361
16849950,0cyclictest0-21swapper/223:54:312
16849950,0cyclictest0-21swapper/222:14:432
16849950,0cyclictest0-21swapper/219:20:112
16839955,0cyclictest0-21swapper/123:51:531
16839955,0cyclictest0-21swapper/123:01:351
16839955,0cyclictest0-21swapper/121:59:471
16839955,0cyclictest0-21swapper/121:20:501
16839950,0cyclictest0-21swapper/123:57:141
16839950,0cyclictest0-21swapper/100:34:551
16839950,0cyclictest0-21swapper/100:29:141
16839950,0cyclictest0-21swapper/100:07:571
16839950,0cyclictest0-21swapper/100:02:361
16829955,0cyclictest0-21swapper/023:45:310
16829955,0cyclictest0-21swapper/021:28:490
16829954,0cyclictest18386-21ps00:09:370
16829950,0cyclictest0-21swapper/023:39:220
169950,0watchdog/127157-21munin-node22:04:341
149950,0migration/09679-21sh23:08:590
149950,0migration/08292-21kthreadcore19:44:360
149950,0migration/08066-21munin-node00:19:400
149950,0migration/05139-21unixbench_multi20:24:440
149950,0migration/04941-21kthreadcore21:49:370
149950,0migration/0353-21kthreadcore21:29:370
149950,0migration/032611-21kthreadcore00:34:380
149950,0migration/032379-21munin-node22:44:330
149950,0migration/029991-21kthreadcore00:14:390
149950,0migration/026876-21turbostat22:04:190
149950,0migration/026783-21kthreadcore21:44:350
149950,0migration/024004-21idleruntime22:39:340
149950,0migration/023185-21vmstat20:14:460
149950,0migration/023185-21vmstat20:14:460
149950,0migration/022962-21kthreadcore00:29:390
149950,0migration/021633-21kthreadcore23:14:380
149950,0migration/020531-21latency_hist22:19:190
149950,0migration/019974-21kthreadcore21:39:380
149950,0migration/015503-21kthreadcore20:34:360
149950,0migration/012832-21taskset20:33:590
149950,0migration/012796-21taskset21:15:380
149950,0migration/011604-21kthreadcore20:09:360
149950,0migration/011419-21kthreadcore19:24:350
149950,0migration/011215-21kthreadcore22:49:380
149950,0migration/010286-21latency_hist00:24:200
339940,0migration/39249-21kthreadcore19:44:363
339940,0migration/36588-21kthreadcore20:04:363
339940,0migration/325849-21kthreadcore20:19:353
329940,0watchdog/30-21swapper/323:04:393
329940,0watchdog/30-21swapper/322:29:303
329940,0watchdog/30-21swapper/322:04:343
329940,0watchdog/30-21swapper/321:39:383
329940,0watchdog/30-21swapper/320:14:343
329940,0watchdog/30-21swapper/320:14:343
29815040,0irq/29-eth0-tx-29881-21kthreadcore00:34:372
29815040,0irq/29-eth0-tx-20852-21ssh23:49:402
29815040,0irq/29-eth0-tx-16760-21ssh00:09:272
29815040,0irq/29-eth0-tx-11534-21ssh00:24:352
29815040,0irq/29-eth0-tx-0-21swapper/222:39:402
29815040,0irq/29-eth0-tx-0-21swapper/222:06:252
29815040,0irq/29-eth0-tx-0-21swapper/221:59:582
29815040,0irq/29-eth0-tx-0-21swapper/221:50:262
29815040,0irq/29-eth0-tx-0-21swapper/221:29:322
29815040,0irq/29-eth0-tx-0-21swapper/200:39:252
29815040,0irq/29-eth0-tx-0-21swapper/200:14:212
29815040,0irq/29-eth0-tx-0-21swapper/019:29:410
29805040,0irq/28-eth0-rx-28562-21fschecks_time00:34:343
29805040,0irq/28-eth0-rx-0-21swapper/323:54:343
29805040,0irq/28-eth0-rx-0-21swapper/323:45:453
29805040,0irq/28-eth0-rx-0-21swapper/321:24:503
29805040,0irq/28-eth0-rx-0-21swapper/321:09:303
29805040,0irq/28-eth0-rx-0-21swapper/319:19:403
259940,0migration/28890-21unixbench_multi20:49:442
259940,0migration/27423-21kthreadcore20:04:362
259940,0migration/25077-21sendmail_mailqu21:09:402
259940,0migration/231787-21sh23:59:262
259940,0migration/231605-21aten_r1power_en22:44:312
259940,0migration/23088-21kthreadcore19:39:352
259940,0migration/226294-21sh19:54:422
259940,0migration/225749-21kthreadcore21:04:352
259940,0migration/220844-21aten_r1power_vo22:19:322
259940,0migration/219121-21aten_r1power_po00:29:332
259940,0migration/217672-21kthreadcore23:29:372
259940,0migration/214180-21fschecks_time21:19:322
259940,0migration/213350-21kthreadcore19:24:362
249940,0watchdog/217526-21kthreadcore00:44:392
249940,0watchdog/213125-21diskmemload23:24:432
249940,0watchdog/212809-21ssh23:45:112
249940,0watchdog/20-21swapper/221:39:222
179940,0migration/19526-21kthreadcore19:44:361
179940,0migration/18491-21kthreadcore00:39:381
179940,0migration/17101-21kthreadcore19:19:381
179940,0migration/16753-21fschecks_count21:14:321
179940,0migration/14182-21kthreadcore23:04:381
179940,0migration/132327-21kthreadcore23:39:371
179940,0migration/128791-21kthreadcore19:34:361
179940,0migration/128399-21sh23:19:331
179940,0migration/126639-21kthreadcore21:44:351
179940,0migration/124424-21kthreadcore21:24:371
179940,0migration/123477-21kthreadcore19:54:361
179940,0migration/121213-21kthreadcore00:29:381
179940,0migration/118592-21kthreadcore22:34:361
179940,0migration/118259-21pmu-power22:14:411
179940,0migration/117146-21kthreadcore20:34:371
179940,0migration/116086-21taskset19:28:391
179940,0migration/114822-21taskset21:36:531
179940,0migration/111754-21missed_timers22:29:391
179940,0migration/110911-21kthreadcore20:29:381
16849944,0cyclictest0-21swapper/220:59:312
16849943,0cyclictest6853-21awk19:44:342
16849943,0cyclictest6739-21awk22:29:352
16849943,0cyclictest3524-21snmpd22:54:542
16849943,0cyclictest3524-21snmpd22:34:242
16849943,0cyclictest20987-21munin-node23:34:332
16849943,0cyclictest17677-21awk20:14:362
16849943,0cyclictest17677-21awk20:14:362
16839944,0cyclictest0-21swapper/123:46:311
16839943,0cyclictest8976-21awk22:49:351
16839943,0cyclictest3524-21snmpd21:29:231
16839943,0cyclictest3524-21snmpd21:04:081
16839943,0cyclictest32175-21awk20:24:351
16839943,0cyclictest25178-21awk21:04:341
16839943,0cyclictest22054-21awk23:34:341
16839943,0cyclictest21759-21awk22:19:351
16839943,0cyclictest17203-21awk21:39:351
16829944,0cyclictest28757-21kthreadcore22:04:370
16829944,0cyclictest0-21swapper/020:03:130
16829944,0cyclictest0-21swapper/000:08:320
16829943,0cyclictest4872-21awk23:24:340
16829943,0cyclictest15721-21awk23:49:350
16829943,0cyclictest11248-21awk23:09:350
16829940,0cyclictest30777-21munin-node19:39:310
16829940,0cyclictest0-21swapper/021:04:310
169940,0watchdog/19120-21ssh00:21:351
169940,0watchdog/15179-21irqrtprio23:24:351
169940,0watchdog/119539-21kthreadcore20:14:381
169940,0watchdog/119539-21kthreadcore20:14:381
169940,0watchdog/116828-21ssh23:09:511
169940,0watchdog/10-21swapper/119:59:381
169940,0watchdog/10-21swapper/119:29:381
169940,0watchdog/10-21swapper/100:44:391
149940,0migration/08374-21kthreadcore22:29:370
149940,0migration/0401-21kthreadcore22:24:360
149940,0migration/030042-21sh23:55:140
149940,0migration/028212-21fschecks_time23:19:320
149940,0migration/024485-21kthreadcore19:54:360
149940,0migration/023016-21kthreadcore22:19:370
149940,0migration/021848-21kthreadcore22:54:370
149940,0migration/019596-21kthreadcore20:59:360
149940,0migration/01757-21kthreadcore21:09:360
149940,0migration/014515-21kthreadcore19:49:360
329930,0watchdog/30-21swapper/319:34:223
29805030,0irq/28-eth0-rx-0-21swapper/321:14:273
29805030,0irq/28-eth0-rx-0-21swapper/320:25:343
29805030,0irq/28-eth0-rx-0-21swapper/320:09:303
259930,0migration/27678-21irqrtprio21:14:352
249930,0watchdog/232650-21kthreadcore19:59:382
16849933,0cyclictest28653-21awk20:44:352
16849932,0cyclictest32030-21awk20:24:342
16849932,0cyclictest25151-21kthreadcore19:34:352
16849932,0cyclictest24924-21awk20:19:332
16849932,0cyclictest24402-21cut20:39:362
16849932,0cyclictest15182-21sort20:09:372
16849932,0cyclictest12687-21tr20:54:362
16849930,0cyclictest13897-21perl20:34:322
16849930,0cyclictest0-21swapper/220:30:492
16839933,0cyclictest24870-21awk20:19:331
16839932,0cyclictest3571-21lldpd22:12:141
16839932,0cyclictest3524-21snmpd21:52:081
16839932,0cyclictest3258-21tail20:49:321
16839932,0cyclictest28677-21awk20:44:351
16839932,0cyclictest23869-21cut20:39:361
16839932,0cyclictest22878-21sensors22:54:411
16839932,0cyclictest15106-21grep23:29:361
16839930,0cyclictest30960-21kernelversion22:24:361
16839930,0cyclictest25240-21timerandwakeup23:14:461
16839930,0cyclictest18744-21kthreadcore00:09:371
16839930,0cyclictest14074-21kthreadcore20:54:361
16839930,0cyclictest0-21swapper/120:12:531
16829932,0cyclictest5002-21ls00:39:350
16829932,0cyclictest26278-21awk22:59:350
16829932,0cyclictest13999-21sh21:34:480
169930,0watchdog/10-21swapper/120:04:301
169930,0watchdog/10-21swapper/119:49:341
149930,0migration/027794-21sh23:35:060
16849921,0cyclictest12862-21cat19:49:192
16829920,0cyclictest0-21swapper/020:44:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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