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2026-06-16 - 22:03
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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 Tue Jun 16, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2180228483,0sleep10-21swapper/107:20:311
28874995353,0cyclictest83050irq/26-0000:00:09:51:412
2844724536,0sleep20-21swapper/207:21:242
2856623332,0sleep00-21swapper/007:22:420
2855423223,0sleep30-21swapper/307:22:333
35170,0ktimersoftd/30-21swapper/309:48:443
288749970,0cyclictest0-21swapper/208:40:242
8305060,0irq/26-0000:00:19147-21diskstats07:40:363
8305060,0irq/26-0000:00:13879-21iostat_ios08:20:403
339960,0migration/33862-21sh09:37:543
339960,0migration/324145-21sh10:06:593
339960,0migration/321797-21sh11:59:383
339960,0migration/318092-21kthreadcore12:15:403
339960,0migration/317998-21sh12:35:153
339960,0migration/317721-21sendmail_mailqu11:35:463
339960,0migration/317533-21sh10:21:093
29815060,0irq/29-eth0-tx-16918-21munin-node08:45:480
29805060,0irq/28-eth0-rx-9272-21cut10:55:413
29805060,0irq/28-eth0-rx-5568-21iostat_ios10:35:403
29805060,0irq/28-eth0-rx-3866-21munin-node12:45:363
29805060,0irq/28-eth0-rx-29352-21fschecks_count11:45:353
29805060,0irq/28-eth0-rx-27577-21iostat_ios11:25:383
29805060,0irq/28-eth0-rx-25505-21perl12:20:363
29805060,0irq/28-eth0-rx-11989-21sh12:10:423
288749960,0cyclictest0-21swapper/209:13:592
27160,0ktimersoftd/20-21swapper/210:55:212
149960,0migration/016269-21kthreadcore11:55:420
149960,0migration/015709-21sh10:02:280
8305050,0irq/26-0000:00:8112-21tr09:40:392
8305050,0irq/26-0000:00:4985-21cut11:50:222
8305050,0irq/26-0000:00:449-21kthreadcore08:30:403
8305050,0irq/26-0000:00:3552-21lldpd07:26:113
8305050,0irq/26-0000:00:31330-21cut09:35:422
8305050,0irq/26-0000:00:30042-21irqrtprio09:15:393
8305050,0irq/26-0000:00:28082-21kthreadcore08:05:413
8305050,0irq/26-0000:00:27537-21kthreadcore08:50:413
8305050,0irq/26-0000:00:23559-21grep08:45:493
8305050,0irq/26-0000:00:21618-21df_abs09:10:343
8305050,0irq/26-0000:00:2001-21munin-node07:50:383
8305050,0irq/26-0000:00:0-21swapper/308:55:403
8305050,0irq/26-0000:00:0-21swapper/308:35:333
8305050,0irq/26-0000:00:0-21swapper/308:15:353
8305050,0irq/26-0000:00:0-21swapper/307:45:353
4150,0ktimersoftd/00-21swapper/011:14:410
339950,0migration/38521-21munin-node07:55:343
339950,0migration/37851-21sh09:59:373
339950,0migration/37391-21fschecks_time09:00:363
339950,0migration/36859-21kthreadcore10:15:403
339950,0migration/34738-21sshd08:11:493
339950,0migration/33970-21latency_hist07:30:223
339950,0migration/33614-21aten_r1power_fr09:20:343
339950,0migration/328851-21fschecks_time10:30:353
339950,0migration/328152-21sh11:44:353
339950,0migration/324734-21kthreadcore10:25:423
339950,0migration/323124-21fschecks_time12:00:363
339950,0migration/319411-21munin-node10:40:473
339950,0migration/318930-21kthreadcore11:00:413
339950,0migration/313907-21aten_r1power_cu09:05:343
339950,0migration/313542-21kthreadcore09:25:403
339950,0migration/312317-21gltestperf07:35:363
329950,0watchdog/39719-21aten2.4-expect08:40:333
329950,0watchdog/324402-21yum11:20:503
30449255,0sleep35796-21md1_resync09:51:413
29815050,0irq/29-eth0-tx-28530-21munin-node09:15:430
29815050,0irq/29-eth0-tx-22995-21munin-node08:05:430
29815050,0irq/29-eth0-tx-17058-21munin-node10:05:432
29815050,0irq/29-eth0-tx-15992-21ssh11:16:312
29815050,0irq/29-eth0-tx-11201-21ssh10:36:042
29815050,0irq/29-eth0-tx-0-21swapper/212:29:202
29815050,0irq/29-eth0-tx-0-21swapper/210:40:402
29815050,0irq/29-eth0-tx-0-21swapper/210:31:202
29815050,0irq/29-eth0-tx-0-21swapper/209:47:102
29815050,0irq/29-eth0-tx-0-21swapper/209:33:512
29815050,0irq/29-eth0-tx-0-21swapper/009:25:410
29805050,0irq/28-eth0-rx-6314-21runrttasks10:12:463
29805050,0irq/28-eth0-rx-3209-21fschecks_count11:30:363
29805050,0irq/28-eth0-rx-0-21swapper/312:53:083
29805050,0irq/28-eth0-rx-0-21swapper/312:40:383
29805050,0irq/28-eth0-rx-0-21swapper/312:28:233
29805050,0irq/28-eth0-rx-0-21swapper/312:05:303
29805050,0irq/28-eth0-rx-0-21swapper/311:19:223
29805050,0irq/28-eth0-rx-0-21swapper/311:08:373
29805050,0irq/28-eth0-rx-0-21swapper/310:03:103
29805050,0irq/28-eth0-rx-0-21swapper/309:41:483
288749955,0cyclictest0-21swapper/212:35:472
288749955,0cyclictest0-21swapper/211:12:422
288749955,0cyclictest0-21swapper/210:18:472
288749955,0cyclictest0-21swapper/207:55:472
288749950,0cyclictest0-21swapper/212:08:122
288749950,0cyclictest0-21swapper/210:10:262
288749950,0cyclictest0-21swapper/208:54:172
288699955,0cyclictest0-21swapper/109:25:431
288699955,0cyclictest0-21swapper/108:25:491
288699954,0cyclictest11201-21ps08:40:391
288679955,0cyclictest4296-21kworker/0:009:49:540
288679955,0cyclictest4296-21kworker/0:009:38:180
288679955,0cyclictest4296-21kworker/0:009:33:020
288679955,0cyclictest4296-21kworker/0:009:22:410
288679955,0cyclictest4296-21kworker/0:009:11:170
288679955,0cyclictest4296-21kworker/0:009:05:470
288679955,0cyclictest4296-21kworker/0:009:01:010
288679955,0cyclictest4296-21kworker/0:008:55:550
288679955,0cyclictest4296-21kworker/0:008:50:310
288679955,0cyclictest4296-21kworker/0:008:30:390
288679955,0cyclictest4296-21kworker/0:008:21:170
288679955,0cyclictest4296-21kworker/0:008:17:050
288679955,0cyclictest28050-21kworker/0:108:10:330
288679955,0cyclictest28050-21kworker/0:108:01:530
288679955,0cyclictest28050-21kworker/0:107:56:210
288679955,0cyclictest28050-21kworker/0:107:51:290
288679955,0cyclictest28050-21kworker/0:107:46:030
288679955,0cyclictest28050-21kworker/0:107:41:230
288679955,0cyclictest28050-21kworker/0:107:36:090
288679955,0cyclictest28050-21kworker/0:107:31:050
288679955,0cyclictest0-21swapper/012:40:370
288679955,0cyclictest0-21swapper/011:15:380
288679955,0cyclictest0-21swapper/009:40:340
288679950,0cyclictest0-21swapper/010:23:360
259950,0migration/225222-21timerwakeupswit07:40:482
259950,0migration/21923-21kthreadcore08:10:402
259950,0migration/216837-21kthreadcore09:25:412
179950,0migration/127001-21hddtemp_smartct07:45:361
179950,0migration/117335-21munin-node08:45:351
179950,0migration/115367-21taskset07:59:281
169950,0watchdog/132240-21ssh12:23:061
169950,0watchdog/117701-21kthreadcore12:50:421
149950,0migration/09600-21runrttasks10:18:070
149950,0migration/06082-21smart_nvme0n109:55:460
149950,0migration/05310-21sh10:35:370
149950,0migration/031899-21kthreadcore10:30:390
149950,0migration/029185-21munin-node07:25:330
149950,0migration/029115-21sh12:01:000
149950,0migration/029036-21kthreadcore11:25:390
149950,0migration/026564-21kthreadcore12:20:400
149950,0migration/02629-21runrttasks11:30:320
149950,0migration/025033-21kthreadcore08:25:400
149950,0migration/023727-21kthreadcore12:35:410
149950,0migration/02115-21latency_hist08:35:220
149950,0migration/019502-21timerandwakeup10:40:470
149950,0migration/015366-21kthreadcore08:40:400
149950,0migration/01501-21kthreadcore11:45:400
149950,0migration/013848-21timerandwakeup12:10:490
149950,0migration/013369-21taskset11:55:130
149950,0migration/013040-21munin-node12:50:380
149950,0migration/01108-21sh10:13:510
149950,0migration/010774-21kthreadcore10:55:410
149950,0migration/010639-21gltestperf12:30:380
8305040,0irq/26-0000:00:0-21swapper/212:30:232
8305040,0irq/26-0000:00:0-21swapper/210:55:492
339940,0migration/39193-21kthreadcore11:50:413
339940,0migration/326846-21taskset08:28:003
339940,0migration/321796-21kthreadcore09:30:393
329940,0watchdog/30-21swapper/308:00:373
29815040,0irq/29-eth0-tx-29924-21ssh11:05:422
29815040,0irq/29-eth0-tx-24694-21munin-node12:20:422
29815040,0irq/29-eth0-tx-0-21swapper/212:52:262
29815040,0irq/29-eth0-tx-0-21swapper/212:45:262
29815040,0irq/29-eth0-tx-0-21swapper/212:40:242
29815040,0irq/29-eth0-tx-0-21swapper/212:15:452
29815040,0irq/29-eth0-tx-0-21swapper/212:10:352
29815040,0irq/29-eth0-tx-0-21swapper/211:45:402
29815040,0irq/29-eth0-tx-0-21swapper/211:40:272
29815040,0irq/29-eth0-tx-0-21swapper/211:00:342
29815040,0irq/29-eth0-tx-0-21swapper/210:00:252
29805040,0irq/28-eth0-rx-0-21swapper/312:35:423
29805040,0irq/28-eth0-rx-0-21swapper/311:10:483
29805040,0irq/28-eth0-rx-0-21swapper/310:50:443
29805040,0irq/28-eth0-rx-0-21swapper/310:45:393
288749944,0cyclictest0-21swapper/207:39:422
288749944,0cyclictest0-21swapper/207:30:242
288749943,0cyclictest4602-21awk09:20:382
288749943,0cyclictest3571-21lldpd07:28:412
288749943,0cyclictest3524-21snmpd10:25:492
288749943,0cyclictest3524-21snmpd08:36:332
288749943,0cyclictest3524-21snmpd08:32:482
288749943,0cyclictest3250-21irqbalance08:00:282
288749943,0cyclictest3250-21irqbalance07:45:382
288749943,0cyclictest29664-21awk09:15:382
288749943,0cyclictest23410-21awk12:00:372
288749943,0cyclictest22762-21awk10:45:372
288749943,0cyclictest18878-21awk11:20:382
288749943,0cyclictest17952-21awk08:45:372
288749943,0cyclictest13760-21awk08:20:392
288749943,0cyclictest0-21swapper/209:55:412
288699943,0cyclictest6441-21awk08:15:381
288699943,0cyclictest4572-21awk09:20:381
288699943,0cyclictest3571-21lldpd11:13:451
288699943,0cyclictest3571-21lldpd09:20:121
288699943,0cyclictest3524-21snmpd12:18:061
288699943,0cyclictest3524-21snmpd11:54:501
288699943,0cyclictest3524-21snmpd11:32:501
288699943,0cyclictest3524-21snmpd11:26:501
288699943,0cyclictest3524-21snmpd11:08:201
288699943,0cyclictest3524-21snmpd11:00:501
288699943,0cyclictest3524-21snmpd10:15:491
288699943,0cyclictest3524-21snmpd10:08:041
288699943,0cyclictest3524-21snmpd08:39:031
288699943,0cyclictest3524-21snmpd08:10:331
288699943,0cyclictest3250-21irqbalance12:46:591
288699943,0cyclictest3250-21irqbalance12:36:191
288699943,0cyclictest3250-21irqbalance11:44:391
288699943,0cyclictest3250-21irqbalance10:26:391
288699943,0cyclictest3250-21irqbalance08:21:281
288699943,0cyclictest28449-21awk08:30:381
288679943,0cyclictest3571-21lldpd10:53:140
288679943,0cyclictest3250-21irqbalance10:25:490
288679943,0cyclictest32068-21awk12:05:390
288679943,0cyclictest24349-21awk09:50:390
288679943,0cyclictest22779-21awk10:45:370
288679943,0cyclictest18209-21awk10:05:380
288679943,0cyclictest12546-21awk11:35:400
259940,0migration/24162-21irqrtprio11:30:392
259940,0migration/228599-21kthreadcore11:25:392
259940,0migration/224121-21if_eth108:05:382
259940,0migration/221745-21kthreadcore08:25:392
259940,0migration/218934-21kthreadcore11:55:422
259940,0migration/216269-21kthreadcore09:05:402
259940,0migration/215541-21kthreadcore11:35:422
259940,0migration/213440-21kthreadcore10:20:422
259940,0migration/210837-21kthreadcore09:00:402
249940,0watchdog/24562-21kthreadcore07:50:412
179940,0migration/19423-21kthreadcore07:30:391
179940,0migration/17878-21taskset07:52:271
179940,0migration/14240-21proc_pri10:50:431
179940,0migration/132503-21kthreadcore10:30:391
179940,0migration/130886-21kthreadcore11:45:391
179940,0migration/125558-21latency_hist10:10:231
179940,0migration/123769-21kthreadcore09:30:401
179940,0migration/123125-21aten_r1power_po08:05:341
179940,0migration/123041-21kthreadcore07:40:411
179940,0migration/12279-21needreboot09:35:441
179940,0migration/116890-21kthreadcore11:55:421
179940,0migration/111905-21munin-node09:40:471
179940,0migration/111667-21cpuspeed_turbos07:35:341
179940,0migration/110432-21needreboot10:35:421
169940,0watchdog/127878-21ssh12:40:381
169940,0watchdog/126153-21grep09:50:411
169940,0watchdog/124980-21ssh11:22:261
169940,0watchdog/122087-21ssh09:48:171
169940,0watchdog/120180-21ssh10:41:581
169940,0watchdog/117485-21ssh10:21:011
169940,0watchdog/113687-21sensors_fan12:10:461
169940,0watchdog/111683-21kthreadcore10:55:421
169940,0watchdog/10-21swapper/112:26:061
169940,0watchdog/10-21swapper/111:35:421
169940,0watchdog/10-21swapper/109:05:451
169940,0watchdog/10-21swapper/108:00:371
149940,0migration/04882-21runrttasks12:45:390
149940,0migration/027082-21kthreadcore11:05:410
149940,0migration/025757-21kthreadcore11:40:400
149940,0migration/024403-21sh11:20:500
149940,0migration/019427-21kthreadcore12:15:400
149940,0migration/016397-21idleruntime11:00:380
288749932,0cyclictest5742-21forks08:15:352
288749932,0cyclictest3524-21snmpd08:57:292
288699932,0cyclictest7441-21fschecks_time09:00:361
288699932,0cyclictest6116-21cat09:55:481
288699932,0cyclictest31256-21grep12:05:361
288699932,0cyclictest30216-21awk07:25:381
288699932,0cyclictest21301-21aten2.4-expect09:10:331
288679933,0cyclictest21390-21kworker/0:112:25:280
169930,0watchdog/110624-21diskmemload11:15:421
169930,0watchdog/110624-21diskmemload10:45:261
169930,0watchdog/10-21swapper/112:30:581
169930,0watchdog/10-21swapper/112:00:261
169930,0watchdog/10-21swapper/110:00:371
169930,0watchdog/10-21swapper/108:56:371
169930,0watchdog/10-21swapper/108:50:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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