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2026-07-24 - 10:54
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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 all highest latencies:
System rack1slot2.osadl.org (updated Fri Jul 24, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2687026766,0sleep00-21swapper/019:26:000
2696224737,0sleep30-21swapper/319:27:073
2669424738,0sleep20-21swapper/219:23:572
2682122925,0sleep10-21swapper/119:25:291
29805070,0irq/28-eth0-rx-20667-21sensors00:23:523
271439970,0cyclictest18728-21cat19:43:441
8305060,0irq/26-0000:00:15801-21crond00:43:262
339960,0migration/36593-21sh00:36:253
339960,0migration/329865-21sh00:29:463
339960,0migration/319879-21taskset20:49:303
339960,0migration/319296-21sh22:30:093
339960,0migration/314501-21sh00:39:363
29815060,0irq/29-eth0-tx-6039-21munin-node20:43:430
29805060,0irq/28-eth0-rx-30754-21pmu-power00:48:473
29805060,0irq/28-eth0-rx-20719-21ps23:48:443
29805060,0irq/28-eth0-rx-15762-21python20:23:513
29805060,0irq/28-eth0-rx-13942-21sh22:48:323
271429960,0cyclictest6008-21diskmemload00:12:440
271429960,0cyclictest0-21swapper/019:40:460
259960,0migration/24574-21kthreadcore19:33:432
149960,0migration/027194-21timerandwakeup22:33:540
149960,0migration/02446-21sh23:54:500
149960,0migration/015740-21sh00:43:150
8305050,0irq/26-0000:00:7289-21dump-pmu-power00:38:262
8305050,0irq/26-0000:00:16704-21crond21:13:263
339950,0migration/39474-21kthreadcore22:43:443
339950,0migration/35109-21switchtime20:38:483
339950,0migration/34562-21kthreadcore21:43:453
339950,0migration/329843-21kthreadcore20:13:443
339950,0migration/328803-21sh23:53:393
339950,0migration/328474-21kthreadcore21:18:443
339950,0migration/326695-21kthreadcore00:08:463
339950,0migration/324329-21aten_r1power_po23:13:393
339950,0migration/323777-21sendmail_mailqu23:28:503
339950,0migration/317582-21fschecks_time21:13:403
339950,0migration/313150-21kthreadcore23:43:433
339950,0migration/312406-21munin-node19:58:523
339950,0migration/311983-21kthreadcore21:48:433
329950,0watchdog/32024-21cut21:23:453
329950,0watchdog/30-21swapper/323:33:373
329950,0watchdog/30-21swapper/322:09:173
29815050,0irq/29-eth0-tx-9495-21ssh23:40:352
29815050,0irq/29-eth0-tx-8127-21ssh23:03:402
29815050,0irq/29-eth0-tx-4140-21forks22:23:402
29815050,0irq/29-eth0-tx-4140-21forks22:23:402
29815050,0irq/29-eth0-tx-32219-21grep23:53:432
29815050,0irq/29-eth0-tx-27510-21ssh23:53:202
29815050,0irq/29-eth0-tx-27482-21aten_r1power_cu22:18:362
29815050,0irq/29-eth0-tx-26953-21ssh22:17:452
29815050,0irq/29-eth0-tx-20458-21munin-node20:53:390
29815050,0irq/29-eth0-tx-20181-21awk22:32:472
29815050,0irq/29-eth0-tx-16611-21munin-node19:43:400
29815050,0irq/29-eth0-tx-0-21swapper/223:28:102
29815050,0irq/29-eth0-tx-0-21swapper/223:13:472
29815050,0irq/29-eth0-tx-0-21swapper/222:52:522
29815050,0irq/29-eth0-tx-0-21swapper/221:33:452
29815050,0irq/29-eth0-tx-0-21swapper/200:19:132
29815050,0irq/29-eth0-tx-0-21swapper/021:30:300
29815050,0irq/29-eth0-tx-0-21swapper/020:13:470
29805050,0irq/28-eth0-rx-643-21kthreadcore22:38:453
29805050,0irq/28-eth0-rx-4398-21cut23:18:463
29805050,0irq/28-eth0-rx-31596-21tune2fs19:53:393
29805050,0irq/28-eth0-rx-3139-21perl21:03:423
29805050,0irq/28-eth0-rx-29352-21kthreadcore21:58:463
29805050,0irq/28-eth0-rx-27968-21df20:58:393
29805050,0irq/28-eth0-rx-23275-21ssh00:45:253
29805050,0irq/28-eth0-rx-20725-21aten_r1power_en22:33:383
29805050,0irq/28-eth0-rx-20382-21kthreadcore21:33:463
29805050,0irq/28-eth0-rx-10815-21cat23:23:443
29805050,0irq/28-eth0-rx-0-21swapper/323:40:253
29805050,0irq/28-eth0-rx-0-21swapper/323:08:343
29805050,0irq/28-eth0-rx-0-21swapper/322:55:283
29805050,0irq/28-eth0-rx-0-21swapper/322:21:213
29805050,0irq/28-eth0-rx-0-21swapper/322:04:333
29805050,0irq/28-eth0-rx-0-21swapper/321:38:463
29805050,0irq/28-eth0-rx-0-21swapper/321:30:223
29805050,0irq/28-eth0-rx-0-21swapper/300:16:373
29805050,0irq/28-eth0-rx-0-21swapper/300:03:403
271449955,0cyclictest0-21swapper/222:38:502
271449955,0cyclictest0-21swapper/222:12:022
271449955,0cyclictest0-21swapper/221:57:222
271449955,0cyclictest0-21swapper/200:23:312
271439955,0cyclictest0-21swapper/121:59:281
271439954,0cyclictest3524-21snmpd00:07:431
271439950,0cyclictest0-21swapper/123:10:351
271439950,0cyclictest0-21swapper/121:32:501
271439950,0cyclictest0-21swapper/100:38:331
271429955,0cyclictest0-21swapper/000:57:490
271429955,0cyclictest0-21swapper/000:22:490
271429955,0cyclictest0-21swapper/000:04:320
271429950,0cyclictest0-21swapper/023:41:500
271429950,0cyclictest0-21swapper/023:04:560
271429950,0cyclictest0-21swapper/000:25:490
259950,0migration/28425-21sh00:56:432
259950,0migration/215938-21sendmail_mailtr21:08:482
259950,0migration/21417-21kthreadcore22:58:442
259950,0migration/212583-21aten_r1power_cu00:03:362
249950,0watchdog/2743-21munin-node19:28:442
249950,0watchdog/220975-21perl20:08:402
249950,0watchdog/210791-21ssh23:58:572
19150,0ktimersoftd/10-21swapper/122:44:531
19150,0ktimersoftd/10-21swapper/100:27:501
179950,0migration/19928-21kthreadcore19:58:441
179950,0migration/19125-21latency_hist00:58:261
179950,0migration/15156-21latency_hist22:43:261
179950,0migration/14015-21taskset23:58:361
179950,0migration/129750-21munin-node00:13:381
179950,0migration/125745-21latency_hist23:33:261
179950,0migration/124632-21kthreadcore00:08:451
179950,0migration/121002-21fschecks_time20:08:401
179950,0migration/116968-21cpuspeed_turbos20:28:371
179950,0migration/115703-21kthreadcore23:43:441
169950,0watchdog/19880-21port_sshpriv22:23:491
169950,0watchdog/19880-21port_sshpriv22:23:491
149950,0migration/07764-21kthreadcore21:03:470
149950,0migration/06407-21kthreadcore22:23:440
149950,0migration/06407-21kthreadcore22:23:440
149950,0migration/04233-21kthreadcore23:18:460
149950,0migration/03820-21kthreadcore22:03:440
149950,0migration/031537-21aten_r1power_vo00:33:400
149950,0migration/028573-21kthreadcore00:48:440
149950,0migration/028450-21hddtemp_smartct22:18:390
149950,0migration/026136-21kthreadcore22:53:430
149950,0migration/024544-21kthreadcore00:28:450
149950,0migration/023322-21kthreadcore23:48:450
149950,0migration/022604-21kthreadcore22:13:440
149950,0migration/022219-21latency_hist22:53:250
149950,0migration/01909-21kthreadcore21:23:450
149950,0migration/019014-21kthreadcore21:13:440
149950,0migration/017757-21kthreadcore00:43:440
149950,0migration/017430-21kthreadcore23:08:440
149950,0migration/015524-21fschecks_time21:33:410
149950,0migration/011381-21kthreadcore19:58:440
149950,0migration/010446-21fschecks_time21:08:400
149950,0migration/010079-21needreboot23:58:470
8305040,0irq/26-0000:00:32336-21ps23:33:482
8305040,0irq/26-0000:00:1713-21latency_hist22:03:262
8305040,0irq/26-0000:00:0-21swapper/319:48:413
339940,0migration/37954-21kthreadcore22:23:453
339940,0migration/37954-21kthreadcore22:23:453
339940,0migration/332206-21diskmemload22:58:433
339940,0migration/329867-21kthreadcore19:28:433
339940,0migration/317111-21fschecks_count19:43:403
339940,0migration/311264-21kthreadcore19:38:453
329940,0watchdog/34314-21kthreadcore00:53:453
329940,0watchdog/30-21swapper/323:58:573
329940,0watchdog/30-21swapper/323:03:533
329940,0watchdog/30-21swapper/320:53:413
329940,0watchdog/30-21swapper/320:08:443
29815040,0irq/29-eth0-tx-0-21swapper/223:28:472
29815040,0irq/29-eth0-tx-0-21swapper/222:45:022
29815040,0irq/29-eth0-tx-0-21swapper/221:43:422
29815040,0irq/29-eth0-tx-0-21swapper/200:48:502
29815040,0irq/29-eth0-tx-0-21swapper/200:43:352
29815040,0irq/29-eth0-tx-0-21swapper/021:18:310
29805040,0irq/28-eth0-rx-30181-21python20:33:483
29805040,0irq/28-eth0-rx-16794-21aten2.4-expect20:28:363
29805040,0irq/28-eth0-rx-0-21swapper/322:13:373
29805040,0irq/28-eth0-rx-0-21swapper/321:53:373
29805040,0irq/28-eth0-rx-0-21swapper/300:21:573
271449943,0cyclictest7135-21awk20:43:412
271449943,0cyclictest6906-21awk19:58:412
271449943,0cyclictest3571-21lldpd21:38:472
271449943,0cyclictest3524-21snmpd23:43:272
271449943,0cyclictest3524-21snmpd23:08:272
271449943,0cyclictest3524-21snmpd22:53:572
271449943,0cyclictest3524-21snmpd20:38:542
271449943,0cyclictest3524-21snmpd20:35:392
271449943,0cyclictest3524-21snmpd20:30:542
271449943,0cyclictest3524-21snmpd19:50:382
271449943,0cyclictest32030-21awk19:53:412
271449943,0cyclictest28724-21awk20:58:422
271449943,0cyclictest28494-21awk20:13:422
271449943,0cyclictest17676-21awk19:43:422
271449943,0cyclictest0-21swapper/221:48:372
271439944,0cyclictest0-21swapper/123:49:221
271439944,0cyclictest0-21swapper/123:05:221
271439943,0cyclictest3571-21lldpd21:24:481
271439943,0cyclictest3524-21snmpd23:54:421
271439943,0cyclictest3524-21snmpd23:00:271
271439943,0cyclictest3524-21snmpd22:53:421
271439943,0cyclictest3524-21snmpd21:39:401
271439943,0cyclictest3524-21snmpd20:52:101
271439943,0cyclictest3524-21snmpd20:43:091
271439943,0cyclictest3524-21snmpd00:22:431
271439943,0cyclictest28543-21awk22:18:411
271439943,0cyclictest24889-21awk19:48:401
271439943,0cyclictest14120-21awk20:03:411
271439940,0cyclictest0-21swapper/119:29:091
271429943,0cyclictest5795-21kworker/0:223:27:250
271429943,0cyclictest3524-21snmpd22:39:110
271429943,0cyclictest3524-21snmpd20:34:090
271429943,0cyclictest3065-21grep20:18:400
271429943,0cyclictest28679-21awk20:58:410
271429943,0cyclictest26811-21awk21:58:430
271429943,0cyclictest21346-21awk20:08:420
271429943,0cyclictest13389-21awk22:28:430
271429943,0cyclictest11521-21awk22:08:440
271429940,0cyclictest19237-21munin-node20:48:440
271429940,0cyclictest0-21swapper/021:55:430
259940,0migration/29398-21taskset21:07:342
259940,0migration/230317-21fschecks_time00:13:392
259940,0migration/228884-21needreboot00:28:472
259940,0migration/227867-21kthreadcore21:58:452
259940,0migration/222613-21kthreadcore20:53:432
259940,0migration/221526-21fschecks_time22:33:412
259940,0migration/214972-21kthreadcore20:23:442
259940,0migration/211040-21kthreadcore19:38:452
249940,0watchdog/2966-21perl23:18:412
249940,0watchdog/28463-21kthreadcore21:28:452
249940,0watchdog/224754-21kthreadcore00:08:452
249940,0watchdog/221579-21cut21:13:452
249940,0watchdog/22025-21kthreadcore21:23:452
179940,0migration/18603-21aten_r1power_vo21:48:371
179940,0migration/15707-21kthreadcore21:03:461
179940,0migration/15184-21kthreadcore19:33:431
179940,0migration/1368-21sh23:34:151
179940,0migration/13472-21kernelversion22:03:431
179940,0migration/131049-21latency_hist20:38:261
179940,0migration/127161-21kthreadcore00:48:441
179940,0migration/126707-21kthreadcore23:13:441
179940,0migration/126087-21kthreadcore00:28:461
179940,0migration/122922-21sh21:13:471
179940,0migration/121382-21munin-node20:53:391
179940,0migration/117460-21cpuspeed_turbos21:53:381
179940,0migration/116511-21kthreadcore21:33:451
179940,0migration/11481-21kthreadcore21:43:441
179940,0migration/110693-21cpuspeed_turbos22:08:401
169940,0watchdog/16008-21diskmemload00:33:371
169940,0watchdog/117030-21kthreadcore22:28:451
169940,0watchdog/10-21swapper/123:18:411
169940,0watchdog/10-21swapper/122:33:451
169940,0watchdog/10-21swapper/120:58:451
169940,0watchdog/10-21swapper/120:13:441
169940,0watchdog/10-21swapper/100:43:411
149940,0migration/024739-21fschecks_count23:13:400
149940,0migration/011913-21kthreadcore20:23:430
149940,0migration/010381-21kthreadcore21:48:420
329930,0watchdog/30-21swapper/320:43:373
329930,0watchdog/30-21swapper/320:18:443
329930,0watchdog/30-21swapper/320:03:403
29805030,0irq/28-eth0-rx-0-21swapper/319:33:373
271449932,0cyclictest2403-21cpu20:18:382
271449932,0cyclictest13667-21df_abs20:48:362
271449930,0cyclictest24992-21perl21:18:402
271439933,0cyclictest25245-21awk21:18:421
271439932,0cyclictest3335-21awk23:38:431
271439932,0cyclictest14673-21grep22:48:391
271439932,0cyclictest13050-21sadc20:48:261
271439932,0cyclictest10688-21awk20:23:421
271439932,0cyclictest10052-21awk23:23:421
271439930,0cyclictest3001-21perl20:18:401
271439930,0cyclictest19820-21perl22:13:401
271439930,0cyclictest15475-21pmu-power19:38:481
271429933,0cyclictest5795-21kworker/0:223:28:370
271429933,0cyclictest5795-21kworker/0:222:58:270
271429933,0cyclictest5795-21kworker/0:222:43:310
271429933,0cyclictest5795-21kworker/0:221:43:330
271429933,0cyclictest5795-21kworker/0:221:38:310
271429933,0cyclictest23831-21kworker/0:023:43:270
271429933,0cyclictest23831-21kworker/0:023:33:270
271429933,0cyclictest23831-21kworker/0:000:13:270
271429933,0cyclictest19169-21kworker/0:220:03:370
271429933,0cyclictest19169-21kworker/0:219:53:270
271429933,0cyclictest19169-21kworker/0:219:48:310
271429933,0cyclictest19169-21kworker/0:219:33:360
271429933,0cyclictest19169-21kworker/0:219:28:260
271429933,0cyclictest15761-21kworker/0:020:38:350
271429933,0cyclictest15761-21kworker/0:020:28:330
249930,0watchdog/20-21swapper/220:03:402
271439920,0cyclictest9665-21cat21:08:261
271439920,0cyclictest30872-21wc19:53:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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