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2026-09-11 - 14:13
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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 Sep 11, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2300125241,0sleep00-21swapper/007:29:540
2296924435,0sleep10-21swapper/107:29:311
2315924028,0sleep30-21swapper/307:31:453
2296523526,0sleep20-21swapper/207:29:282
23295991212,0cyclictest30048-21sensors09:02:532
8305060,0irq/26-0000:00:1896-21crond08:47:293
339960,0migration/38529-21kthreadcore07:42:463
339960,0migration/37116-21munin-node09:12:443
339960,0migration/35807-21needreboot10:27:493
339960,0migration/31673-21taskset12:21:373
339960,0migration/312617-21sh12:47:303
339960,0migration/310639-21sh11:09:013
29805060,0irq/28-eth0-rx-6314-21runrttasks11:43:083
29805060,0irq/28-eth0-rx-20685-21munin-node12:32:513
29805060,0irq/28-eth0-rx-13231-21cut10:52:473
232959966,0cyclictest83050irq/26-0000:00:12:52:512
232949960,0cyclictest0-21swapper/109:47:471
232939960,0cyclictest0-21swapper/011:47:050
149960,0migration/07273-21kthreadcore08:47:470
8305050,0irq/26-0000:00:3222-17sedispatch09:52:302
8305050,0irq/26-0000:00:10178-21latency_hist10:52:302
8305050,0irq/26-0000:00:0-21swapper/308:47:433
8305050,0irq/26-0000:00:0-21swapper/211:12:452
339950,0migration/39835-21taskset09:35:263
339950,0migration/38634-21taskset08:03:003
339950,0migration/35519-21taskset09:10:343
339950,0migration/332620-21kthreadcore07:37:453
339950,0migration/329979-21aten2.4-expect12:57:423
339950,0migration/327723-21switchtime12:53:013
339950,0migration/327150-21kthreadcore08:17:483
339950,0migration/325214-21sh12:15:283
339950,0migration/322541-21missed_timers08:57:493
339950,0migration/321763-21kthreadcore07:52:463
339950,0migration/32088-21taskset11:04:183
339950,0migration/320219-21rt-features11:32:503
339950,0migration/318858-21kthreadcore08:12:463
339950,0migration/312099-21irqcore09:37:453
329950,0watchdog/32993-21sh09:49:203
329950,0watchdog/321723-21aten_r1power_cu10:02:403
329950,0watchdog/321016-21needreboot10:17:493
329950,0watchdog/319678-21perl10:57:453
329950,0watchdog/314037-21sh11:48:173
329950,0watchdog/310302-21iostat_ios12:07:453
329950,0watchdog/30-21swapper/311:39:493
329950,0watchdog/30-21swapper/311:24:333
29815050,0irq/29-eth0-tx-9400-21ssh09:34:140
29815050,0irq/29-eth0-tx-5393-21munin-node11:27:482
29815050,0irq/29-eth0-tx-23665-21munin-node08:17:420
29815050,0irq/29-eth0-tx-13431-21df09:57:422
29815050,0irq/29-eth0-tx-0-21swapper/212:42:462
29815050,0irq/29-eth0-tx-0-21swapper/212:17:482
29815050,0irq/29-eth0-tx-0-21swapper/210:05:592
29805050,0irq/28-eth0-rx-9876-21ssh10:52:163
29805050,0irq/28-eth0-rx-7783-21cut09:52:503
29805050,0irq/28-eth0-rx-31496-21kthreadcore12:37:483
29805050,0irq/28-eth0-rx-30635-21kthreadcore10:42:483
29805050,0irq/28-eth0-rx-19550-21hostname09:42:413
29805050,0irq/28-eth0-rx-18340-21grep12:47:483
29805050,0irq/28-eth0-rx-16311-21kthreadcore09:57:473
29805050,0irq/28-eth0-rx-13878-21sh10:15:063
29805050,0irq/28-eth0-rx-0-21swapper/312:22:433
29805050,0irq/28-eth0-rx-0-21swapper/312:06:053
29805050,0irq/28-eth0-rx-0-21swapper/311:27:453
29805050,0irq/28-eth0-rx-0-21swapper/311:22:273
29805050,0irq/28-eth0-rx-0-21swapper/311:12:423
29805050,0irq/28-eth0-rx-0-21swapper/310:32:573
29805050,0irq/28-eth0-rx-0-21swapper/310:22:473
29805050,0irq/28-eth0-rx-0-21swapper/309:17:413
259950,0migration/2926-21munin-node08:42:502
259950,0migration/28676-21cpuspeed_turbos10:32:462
259950,0migration/28372-21kthreadcore09:52:502
259950,0migration/231303-21sh11:58:472
259950,0migration/230856-21idleruntime12:57:452
259950,0migration/230090-21latency_hist10:07:302
259950,0migration/229257-21kthreadcore10:42:472
259950,0migration/228905-21kernelversion11:02:462
259950,0migration/223970-21sh10:39:092
259950,0migration/22246-21taskset12:22:362
259950,0migration/219806-21cpuspeed_turbos12:32:472
259950,0migration/219680-21sh12:48:352
259950,0migration/217334-21kthreadcore10:17:472
259950,0migration/215372-21irqcore11:32:462
259950,0migration/212560-21munin-node10:12:552
259950,0migration/210136-21sh09:36:132
249950,0watchdog/228061-21perl07:57:442
249950,0watchdog/213786-21sed07:47:442
232959955,0cyclictest0-21swapper/211:51:032
232959954,0cyclictest4747-21awk11:07:452
232959950,0cyclictest0-21swapper/209:39:342
232949950,0cyclictest0-21swapper/111:36:151
232949950,0cyclictest0-21swapper/109:58:301
232939955,0cyclictest0-21swapper/011:47:520
232939955,0cyclictest0-21swapper/010:58:030
232939955,0cyclictest0-21swapper/009:42:410
232939955,0cyclictest0-21swapper/009:22:590
232939953,0cyclictest5719-21kworker/0:208:42:420
232939950,0cyclictest12480-21idleruntime-cro12:47:300
232939950,0cyclictest0-21swapper/012:18:460
232939950,0cyclictest0-21swapper/010:57:150
232939950,0cyclictest0-21swapper/010:00:020
179950,0migration/13267-21kthreadcore12:02:471
179950,0migration/131685-21kthreadcore07:57:481
179950,0migration/130302-21taskset11:41:121
179950,0migration/129872-21kthreadcore12:37:471
179950,0migration/129042-21sh10:04:561
179950,0migration/127075-21kthreadcore08:17:481
179950,0migration/123552-21kthreadcore12:52:531
179950,0migration/122102-21kthreadcore08:57:481
179950,0migration/121501-21kthreadcore12:32:521
179950,0migration/118057-21munin-node12:12:431
179950,0migration/113782-21idleruntime12:47:441
179950,0migration/112316-21taskset07:44:371
149950,0migration/08935-21latency_hist12:07:300
149950,0migration/08125-21kthreadcore11:07:470
149950,0migration/05273-21sh10:10:000
149950,0migration/04837-21taskset11:26:410
149950,0migration/030708-21sh10:24:150
149950,0migration/024048-21munin-node12:12:540
149950,0migration/023332-21latency_hist10:22:300
149950,0migration/02177-21kthreadcore08:22:460
149950,0migration/018829-21pmu-power07:47:500
149950,0migration/01857-21munin-node12:37:520
149950,0migration/015879-21munin-node11:52:480
149950,0migration/013551-21kthreadcore09:37:460
149950,0migration/010394-21hddtemp_smartct08:52:440
8305040,0irq/26-0000:00:0-21swapper/212:12:302
8305040,0irq/26-0000:00:0-21swapper/211:18:012
4140,0ktimersoftd/00-21swapper/010:04:390
339940,0migration/327660-21aten_r1power_po09:27:423
339940,0migration/326361-21taskset08:37:513
339940,0migration/321825-21irqrtprio09:22:473
339940,0migration/316099-21runrttasks08:54:133
329940,0watchdog/30-21swapper/307:47:443
29815040,0irq/29-eth0-tx-7163-21taskset12:02:552
29815040,0irq/29-eth0-tx-0-21swapper/212:39:342
29815040,0irq/29-eth0-tx-0-21swapper/212:29:552
29815040,0irq/29-eth0-tx-0-21swapper/211:52:522
29815040,0irq/29-eth0-tx-0-21swapper/211:42:552
29815040,0irq/29-eth0-tx-0-21swapper/211:37:492
29815040,0irq/29-eth0-tx-0-21swapper/211:23:282
29815040,0irq/29-eth0-tx-0-21swapper/210:47:412
29815040,0irq/29-eth0-tx-0-21swapper/210:28:192
29815040,0irq/29-eth0-tx-0-21swapper/209:42:372
29815040,0irq/29-eth0-tx-0-21swapper/009:27:420
29815040,0irq/29-eth0-tx-0-21swapper/009:17:390
29815040,0irq/29-eth0-tx-0-21swapper/008:12:410
29815040,0irq/29-eth0-tx-0-21swapper/007:32:510
29805040,0irq/28-eth0-rx-22014-21ps11:52:573
29805040,0irq/28-eth0-rx-0-21swapper/312:28:023
29805040,0irq/28-eth0-rx-0-21swapper/311:59:043
29805040,0irq/28-eth0-rx-0-21swapper/310:38:333
29805040,0irq/28-eth0-rx-0-21swapper/310:07:423
29805040,0irq/28-eth0-rx-0-21swapper/307:57:483
29805040,0irq/28-eth0-rx-0-21swapper/307:32:443
259940,0migration/26595-21fschecks_time08:27:432
259940,0migration/25005-21switchtime09:07:542
259940,0migration/24474-21kthreadcore08:47:462
259940,0migration/231797-21hddtemp_smartct08:22:422
259940,0migration/225442-21kthreadcore10:22:462
259940,0migration/223458-21latency_hist07:32:292
259940,0migration/220055-21irqcore10:57:472
259940,0migration/218301-21kthreadcore09:17:472
249940,0watchdog/26723-21if_eth1.207:42:442
249940,0watchdog/221002-21cat07:52:442
249940,0watchdog/20-21swapper/209:22:482
232959943,0cyclictest28625-21awk09:27:452
232959943,0cyclictest21248-21awk08:37:442
232959943,0cyclictest10603-21awk08:52:452
232959943,0cyclictest10226-21awk12:07:442
232949944,0cyclictest0-21swapper/112:22:081
232949944,0cyclictest0-21swapper/109:37:041
232949943,0cyclictest3524-21snmpd12:24:591
232949943,0cyclictest3524-21snmpd11:30:581
232949943,0cyclictest3524-21snmpd11:22:581
232949943,0cyclictest3524-21snmpd11:12:581
232949943,0cyclictest3524-21snmpd10:08:281
232949943,0cyclictest3524-21snmpd09:43:121
232949943,0cyclictest3524-21snmpd09:41:121
232949943,0cyclictest3524-21snmpd08:15:561
232949943,0cyclictest3524-21snmpd07:37:411
232949943,0cyclictest28595-21awk09:27:451
232949943,0cyclictest21747-21awk11:17:461
232949943,0cyclictest16901-21awk11:52:521
232949940,0cyclictest2303-21tune2fs10:47:421
232949940,0cyclictest17073-21kthreadcore08:32:471
232949940,0cyclictest10872-21tr09:12:461
232939943,0cyclictest9423-21awk10:32:490
232939943,0cyclictest3524-21snmpd11:06:580
232939943,0cyclictest3524-21snmpd10:31:580
232939943,0cyclictest3524-21snmpd09:53:420
232939943,0cyclictest3250-21irqbalance12:47:460
232939943,0cyclictest3250-21irqbalance11:59:560
232939943,0cyclictest3250-21irqbalance11:34:560
232939943,0cyclictest3250-21irqbalance11:27:460
232939943,0cyclictest3250-21irqbalance10:48:060
232939943,0cyclictest3250-21irqbalance10:42:360
232939943,0cyclictest3250-21irqbalance10:41:060
232939943,0cyclictest31739-21awk07:37:430
232939943,0cyclictest30872-21awk12:57:450
232939943,0cyclictest27187-21munin-node07:57:440
232939943,0cyclictest23621-21awk11:37:440
232939943,0cyclictest22434-21awk12:52:520
232939943,0cyclictest21321-21awk08:37:440
232939943,0cyclictest13178-21awk11:12:460
232939943,0cyclictest10147-21awk12:07:440
232939940,0cyclictest31721-21perl09:07:420
179940,0migration/19688-21kthreadcore10:12:521
179940,0migration/19309-21latency_hist08:52:291
179940,0migration/131778-21fschecks_time09:07:421
179940,0migration/130662-21kthreadcore10:42:481
179940,0migration/127573-21cpuspeed_turbos11:02:421
179940,0migration/125915-21kthreadcore07:32:471
179940,0migration/119969-21taskset07:52:301
179940,0migration/119542-21kthreadcore10:37:451
179940,0migration/117844-21kthreadcore10:17:471
179940,0migration/112917-21kthreadcore10:52:471
179940,0migration/112324-21taskset12:47:031
179940,0migration/11186-21kthreadcore12:57:471
169940,0watchdog/16752-21sh10:28:411
169940,0watchdog/14696-21ssh11:07:451
169940,0watchdog/131637-21ssh10:26:571
169940,0watchdog/130641-21smartctl11:57:531
169940,0watchdog/125614-21kthreadcore09:02:481
169940,0watchdog/122440-21kthreadcore10:57:491
169940,0watchdog/12084-21diskmemload12:31:331
169940,0watchdog/12084-21diskmemload11:49:211
169940,0watchdog/120036-21taskset09:21:561
169940,0watchdog/117146-21ssh12:11:571
149940,0migration/09246-21sh12:23:240
149940,0migration/07296-21irqcore09:12:450
149940,0migration/028131-21taskset09:47:300
149940,0migration/021941-21kthreadcore12:32:520
149940,0migration/017139-21fschecks_count08:57:430
149940,0migration/013419-21forks08:32:420
149940,0migration/011782-21sendmail_mailqu07:42:500
329930,0watchdog/30-21swapper/309:02:323
329930,0watchdog/30-21swapper/308:22:323
29815030,0irq/29-eth0-tx-0-21swapper/009:02:440
29815030,0irq/29-eth0-tx-0-21swapper/007:52:410
29805030,0irq/28-eth0-rx-0-21swapper/308:34:343
29805030,0irq/28-eth0-rx-0-21swapper/308:27:413
29805030,0irq/28-eth0-rx-0-21swapper/308:07:553
232959932,0cyclictest3087-21awk08:02:442
232959932,0cyclictest17675-21awk08:57:452
232959932,0cyclictest17397-21cut08:12:422
232959932,0cyclictest10386-21awk08:07:442
232959931,0cyclictest28036-21kthreadcore08:17:482
232959930,0cyclictest6793-21perl09:12:422
232949932,0cyclictest6795-21awk08:27:451
232949932,0cyclictest31151-21tr08:22:401
232949932,0cyclictest3111-21awk08:02:441
232949932,0cyclictest10491-21awk08:52:451
232949930,0cyclictest9680-21diskstats08:07:411
232949930,0cyclictest0-21swapper/109:22:441
232939933,0cyclictest0-21swapper/012:27:450
232939932,0cyclictest7602-21awk10:12:500
232939932,0cyclictest6879-21awk08:27:450
232939930,0cyclictest2401-21diskstats08:02:420
232939930,0cyclictest20617-21sh11:17:350
179930,0migration/14626-21mdstat11:42:491
169930,0watchdog/10-21swapper/110:33:571
169930,0watchdog/10-21swapper/109:52:481
169930,0watchdog/10-21swapper/108:42:441
169930,0watchdog/10-21swapper/108:37:481
169930,0watchdog/10-21swapper/107:47:441
249920,0watchdog/20-21swapper/207:37:322
232959921,0cyclictest6314-21runrttasks08:32:402
232939920,0cyclictest9189-21cat08:07:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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