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2026-04-17 - 02:08
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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 Fri Apr 17, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2116524738,0sleep20-21swapper/219:17:262
2116123728,0sleep30-21swapper/319:17:233
2126923624,0sleep00-21swapper/019:18:400
2126523425,0sleep10-21swapper/119:18:371
21511992020,0cyclictest0-21swapper/221:20:512
339960,0migration/330390-21sh00:42:553
339960,0migration/325874-21kthreadcore22:10:423
339960,0migration/324034-21sh23:42:523
339960,0migration/322637-21sh22:09:293
339960,0migration/315443-21sh22:22:253
29815060,0irq/29-eth0-tx-0-21swapper/221:35:392
29805060,0irq/28-eth0-rx-8381-21cut22:00:423
29805060,0irq/28-eth0-rx-6802-21perl23:15:383
29805060,0irq/28-eth0-rx-5007-21grep21:20:413
29805060,0irq/28-eth0-rx-30947-21sed21:55:403
29805060,0irq/28-eth0-rx-17001-21ssh22:25:363
215119960,0cyclictest0-21swapper/223:30:452
214989960,0cyclictest13116-21kthreadcore21:05:400
214989960,0cyclictest0-21swapper/000:03:590
149960,0migration/05432-21taskset21:59:380
149960,0migration/04582-21kthreadcore23:30:430
8305050,0irq/26-0000:00:3436-21crond22:55:242
339950,0migration/37380-21kthreadcore00:10:413
339950,0migration/35112-21gltestperf21:00:383
339950,0migration/3378-21aten2.4-expect20:35:343
339950,0migration/33342-21pmu-power00:25:473
339950,0migration/332522-21kthreadcore23:10:413
339950,0migration/329684-21kthreadcore19:45:413
339950,0migration/329491-21sh23:25:473
339950,0migration/323387-21kthreadcore21:30:443
339950,0migration/322412-21munin-node23:05:423
339950,0migration/318890-21fschecks_time19:40:373
339950,0migration/315011-21taskset23:36:443
339950,0migration/314130-21kthreadcore20:20:393
339950,0migration/314130-21kthreadcore20:20:393
339950,0migration/313092-21kthreadcore22:40:423
329950,0watchdog/38815-21ssh23:52:353
329950,0watchdog/36314-21runrttasks22:35:433
329950,0watchdog/32912-21ssh22:53:593
329950,0watchdog/319939-21iostat_ios00:00:433
329950,0watchdog/318574-21aten2.4-expect20:25:353
329950,0watchdog/30-21swapper/320:55:473
29815050,0irq/29-eth0-tx-9553-21munin-node21:25:482
29815050,0irq/29-eth0-tx-457-21ssh23:48:412
29815050,0irq/29-eth0-tx-3988-21munin-node20:15:380
29815050,0irq/29-eth0-tx-22984-21munin-node00:40:462
29815050,0irq/29-eth0-tx-22741-21grep23:05:422
29815050,0irq/29-eth0-tx-19949-21grep00:35:442
29815050,0irq/29-eth0-tx-1897-21ssh00:06:382
29815050,0irq/29-eth0-tx-0-21swapper/223:44:202
29815050,0irq/29-eth0-tx-0-21swapper/222:25:162
29815050,0irq/29-eth0-tx-0-21swapper/222:17:442
29815050,0irq/29-eth0-tx-0-21swapper/222:14:062
29815050,0irq/29-eth0-tx-0-21swapper/221:42:002
29815050,0irq/29-eth0-tx-0-21swapper/221:33:532
29815050,0irq/29-eth0-tx-0-21swapper/200:24:452
29815050,0irq/29-eth0-tx-0-21swapper/200:02:572
29815050,0irq/29-eth0-tx-0-21swapper/021:20:270
29815050,0irq/29-eth0-tx-0-21swapper/019:45:020
29805050,0irq/28-eth0-rx-6565-21fschecks_time00:30:383
29805050,0irq/28-eth0-rx-6314-21runrttasks00:38:303
29805050,0irq/28-eth0-rx-21891-21kthreadcore22:45:423
29805050,0irq/28-eth0-rx-172802chrt21:28:283
29805050,0irq/28-eth0-rx-16021-21memory23:55:423
29805050,0irq/28-eth0-rx-15298-21kthreadcore21:45:413
29805050,0irq/28-eth0-rx-1423-21kthreadcore23:30:423
29805050,0irq/28-eth0-rx-0-21swapper/323:20:423
29805050,0irq/28-eth0-rx-0-21swapper/322:56:223
29805050,0irq/28-eth0-rx-0-21swapper/322:16:053
29805050,0irq/28-eth0-rx-0-21swapper/321:15:383
29805050,0irq/28-eth0-rx-0-21swapper/320:15:403
29805050,0irq/28-eth0-rx-0-21swapper/300:15:493
29805050,0irq/28-eth0-rx-0-21swapper/300:05:423
27150,0ktimersoftd/20-21swapper/222:57:312
259950,0migration/24226-21kthreadcore19:50:412
259950,0migration/228484-21timerwakeupswit20:50:492
259950,0migration/22711-21munin-node20:10:442
259950,0migration/219843-21gltestperf22:45:382
259950,0migration/219384-21sh23:01:432
259950,0migration/211082-21sh00:12:562
249950,0watchdog/211021-21kthreadcore19:55:422
249950,0watchdog/20-21swapper/223:10:392
215119950,0cyclictest0-21swapper/200:30:402
215049950,0cyclictest0-21swapper/122:47:071
214989955,0cyclictest6335-21kworker/0:221:35:270
214989955,0cyclictest6335-21kworker/0:221:30:250
214989955,0cyclictest6335-21kworker/0:221:25:250
214989955,0cyclictest6335-21kworker/0:220:45:370
214989955,0cyclictest4545-21kworker/0:023:50:370
214989955,0cyclictest4545-21kworker/0:023:45:490
214989955,0cyclictest4545-21kworker/0:023:40:410
214989955,0cyclictest4545-21kworker/0:023:35:270
214989955,0cyclictest4545-21kworker/0:023:25:250
214989955,0cyclictest4545-21kworker/0:023:21:010
214989955,0cyclictest4545-21kworker/0:023:17:110
214989955,0cyclictest4545-21kworker/0:023:10:370
214989955,0cyclictest4545-21kworker/0:023:05:370
214989955,0cyclictest4545-21kworker/0:023:00:410
214989955,0cyclictest4545-21kworker/0:022:55:250
214989955,0cyclictest4545-21kworker/0:022:50:430
214989955,0cyclictest4545-21kworker/0:022:46:230
214989955,0cyclictest4545-21kworker/0:022:40:350
214989955,0cyclictest4545-21kworker/0:022:35:510
214989955,0cyclictest4545-21kworker/0:022:30:410
214989955,0cyclictest4545-21kworker/0:022:25:430
214989955,0cyclictest4545-21kworker/0:022:20:370
214989955,0cyclictest4545-21kworker/0:022:10:450
214989955,0cyclictest4545-21kworker/0:022:05:370
214989955,0cyclictest4545-21kworker/0:021:50:570
214989955,0cyclictest4545-21kworker/0:021:45:330
214989955,0cyclictest4545-21kworker/0:000:40:340
214989955,0cyclictest4545-21kworker/0:000:35:260
214989955,0cyclictest4545-21kworker/0:000:25:300
214989955,0cyclictest4545-21kworker/0:000:21:140
214989955,0cyclictest4545-21kworker/0:000:15:360
214989955,0cyclictest4545-21kworker/0:000:10:370
214989955,0cyclictest4545-21kworker/0:000:06:270
19150,0ktimersoftd/10-21swapper/100:13:401
179950,0migration/19114-21munin-node23:35:401
179950,0migration/16027-21kthreadcore21:00:411
179950,0migration/15098-21irqcore19:30:401
179950,0migration/14083-21latency_hist21:00:231
179950,0migration/13098-21taskset00:09:551
179950,0migration/129110-21kthreadcore21:15:431
179950,0migration/128858-21kthreadcore20:30:411
179950,0migration/128662-21kthreadcore00:40:441
179950,0migration/127630-21kthreadcore22:10:421
179950,0migration/112620-21runrttasks21:05:391
169950,0watchdog/10-21swapper/120:40:431
149950,0migration/07076-21irqcore00:30:410
149950,0migration/03509-21kthreadcore19:50:410
149950,0migration/03415-21latency_hist21:40:230
149950,0migration/032526-21munin-node22:15:370
149950,0migration/031401-21munin-node19:45:430
149950,0migration/028098-21timerwakeupswit19:20:470
149950,0migration/025875-21cpuspeed_turbos20:30:350
149950,0migration/025773-21latency_hist21:15:230
149950,0migration/02167-21kthreadcore00:45:420
149950,0migration/01587-21kthreadcore20:10:420
149950,0migration/015257-21kthreadcore20:20:390
149950,0migration/015257-21kthreadcore20:20:390
149950,0migration/014546-21kthreadcore23:55:420
149950,0migration/013307-21latency19:55:430
149950,0migration/011916-21kthreadcore22:00:430
339940,0migration/39493-21kthreadcore19:55:423
339940,0migration/36452-21kthreadcore19:30:403
339940,0migration/327109-21kthreadcore19:20:403
339940,0migration/314743-21kthreadcore23:00:423
339940,0migration/313099-21kthreadcore21:05:403
329940,0watchdog/30-21swapper/321:35:273
329940,0watchdog/30-21swapper/321:10:393
329940,0watchdog/30-21swapper/320:45:433
329940,0watchdog/30-21swapper/320:10:423
329940,0watchdog/30-21swapper/319:35:463
29815040,0irq/29-eth0-tx-5889-21ssh23:15:282
29815040,0irq/29-eth0-tx-22012-21aten2.4-expect20:05:350
29815040,0irq/29-eth0-tx-13598-21ssh21:45:392
29815040,0irq/29-eth0-tx-0-21swapper/223:55:462
29815040,0irq/29-eth0-tx-0-21swapper/223:50:352
29815040,0irq/29-eth0-tx-0-21swapper/222:40:362
29815040,0irq/29-eth0-tx-0-21swapper/222:30:352
29815040,0irq/29-eth0-tx-0-21swapper/222:26:262
29815040,0irq/29-eth0-tx-0-21swapper/222:05:432
29815040,0irq/29-eth0-tx-0-21swapper/221:50:232
29815040,0irq/29-eth0-tx-0-21swapper/200:27:162
29805040,0irq/28-eth0-rx-22493-21kthreadcore00:20:423
29805040,0irq/28-eth0-rx-0-21swapper/323:46:123
29805040,0irq/28-eth0-rx-0-21swapper/322:30:423
29805040,0irq/28-eth0-rx-0-21swapper/321:50:233
29805040,0irq/28-eth0-rx-0-21swapper/321:41:313
29805040,0irq/28-eth0-rx-0-21swapper/320:40:423
29805040,0irq/28-eth0-rx-0-21swapper/300:46:403
259940,0migration/28701-21kthreadcore20:15:412
259940,0migration/232569-21idleruntime00:45:392
259940,0migration/23184-21munin-node22:35:432
259940,0migration/230555-21fschecks_time21:55:372
259940,0migration/229481-21aten_r1power_vo20:55:332
259940,0migration/227615-21kthreadcore20:30:402
259940,0migration/226567-21fschecks_time21:15:382
259940,0migration/222614-21gltestperf19:20:362
259940,0migration/21861-21kthreadcore19:25:412
259940,0migration/218306-21kthreadcore23:20:422
259940,0migration/215319-21runrttasks20:00:372
259940,0migration/21142-21fschecks_time20:35:362
259940,0migration/210091-21missed_timers21:00:432
249940,0watchdog/23805-21aten_r1power_cu19:30:342
249940,0watchdog/223229-21kthreadcore21:10:392
249940,0watchdog/218576-21tail20:25:352
249940,0watchdog/218292-21missed_timers00:15:432
249940,0watchdog/213235-21ssh22:02:112
249940,0watchdog/213035-21cut20:40:432
215119944,0cyclictest0-21swapper/219:35:412
215119943,0cyclictest8049-21munin-node23:35:382
215119943,0cyclictest3571-21lldpd21:05:502
215119943,0cyclictest23002-21awk20:05:382
215119940,0cyclictest23879-21perl23:25:372
215049943,0cyclictest4742-21awk21:40:391
215049943,0cyclictest377-21awk23:30:401
215049943,0cyclictest3571-21lldpd22:15:501
215049943,0cyclictest3524-21snmpd23:21:311
215049943,0cyclictest3524-21snmpd20:35:271
215049943,0cyclictest3524-21snmpd20:00:121
215049943,0cyclictest3250-21irqbalance23:40:511
215049943,0cyclictest3250-21irqbalance22:56:501
215049943,0cyclictest3250-21irqbalance22:30:401
215049943,0cyclictest3250-21irqbalance22:26:101
215049943,0cyclictest3250-21irqbalance22:21:501
215049943,0cyclictest3250-21irqbalance20:06:101
215049943,0cyclictest3250-21irqbalance19:20:401
215049943,0cyclictest3250-21irqbalance00:35:411
215049943,0cyclictest3250-21irqbalance00:30:511
215049943,0cyclictest3250-21irqbalance00:17:111
215049943,0cyclictest30001-21awk19:25:381
215049943,0cyclictest28169-21awk21:35:371
215049943,0cyclictest26457-21awk19:45:381
215049943,0cyclictest24344-21awk23:25:401
215049943,0cyclictest22045-21awk00:20:411
215049943,0cyclictest13554-21awk23:00:411
215049943,0cyclictest12254-21awk20:20:361
215049943,0cyclictest12254-21awk20:20:361
215049943,0cyclictest12150-21awk19:35:371
214989944,0cyclictest6335-21kworker/0:220:40:430
214989944,0cyclictest6335-21kworker/0:220:36:270
214989944,0cyclictest6335-21kworker/0:219:35:370
214989944,0cyclictest6335-21kworker/0:219:25:350
214989943,0cyclictest4875-21awk19:30:390
214989943,0cyclictest3524-21snmpd20:02:120
214989943,0cyclictest3250-21irqbalance21:00:400
214989943,0cyclictest3250-21irqbalance20:54:300
214989943,0cyclictest3250-21irqbalance20:28:300
214989943,0cyclictest19698-21awk21:10:360
179940,0migration/19561-21kthreadcore22:00:421
179940,0migration/1656-21kthreadcore20:10:411
179940,0migration/14520-21fschecks_count20:15:361
179940,0migration/14402-21kthreadcore21:20:411
179940,0migration/131149-21irqrtprio21:55:401
179940,0migration/128857-21irqcore22:50:401
179940,0migration/128311-21kthreadcore23:45:421
179940,0migration/126093-21kthreadcore23:05:431
179940,0migration/122207-21kthreadcore20:25:401
179940,0migration/121139-21kthreadcore19:40:411
179940,0migration/118855-21swap21:45:491
179940,0migration/118508-21runrttasks21:30:381
179940,0migration/117657-21kthreadcore20:00:411
179940,0migration/116759-21kthreadcore22:05:421
179940,0migration/111623-21kthreadcore21:25:421
179940,0migration/111340-21kthreadcore23:15:421
169940,0watchdog/14042-21ssh00:26:151
169940,0watchdog/13563-21kthreadcore22:35:431
169940,0watchdog/132621-21munin-node19:50:341
169940,0watchdog/118963-21cpuspeed_turbos00:00:391
169940,0watchdog/115195-21cut22:40:431
169940,0watchdog/110098-21munin-node23:55:431
169940,0watchdog/10-21swapper/123:50:391
169940,0watchdog/10-21swapper/123:10:391
149940,0migration/030334-21idleruntime20:55:360
329930,0watchdog/30-21swapper/319:50:343
329930,0watchdog/30-21swapper/319:25:343
29805030,0irq/28-eth0-rx-0-21swapper/320:51:253
29805030,0irq/28-eth0-rx-0-21swapper/320:31:213
29805030,0irq/28-eth0-rx-0-21swapper/320:05:353
249930,0watchdog/220601-21kthreadcore20:45:432
249930,0watchdog/20-21swapper/219:45:262
215119932,0cyclictest14063-21grep20:20:382
215119932,0cyclictest14063-21grep20:20:382
215119930,0cyclictest0-21swapper/219:40:242
215049932,0cyclictest26358-21kthreadcore21:50:421
215049932,0cyclictest23184-21awk20:50:391
215049930,0cyclictest16121-21iostat_ios20:45:411
179930,0migration/119965-21irqcore21:10:371
169930,0watchdog/10-21swapper/100:45:351
329920,0watchdog/30-21swapper/320:00:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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