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2026-07-26 - 04:08
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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 Sun Jul 26, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1753524940,0sleep10-21swapper/119:24:221
1777423425,0sleep30-21swapper/319:27:083
1759123425,0sleep20-21swapper/219:24:592
1751422826,0sleep00-21swapper/019:24:050
29805070,0irq/28-eth0-rx-0-21swapper/323:13:543
8305060,0irq/26-0000:00:6222-21munin-run23:08:362
4160,0ktimersoftd/00-21swapper/023:31:300
35160,0ktimersoftd/30-21swapper/323:31:303
339960,0migration/34842-21sh23:04:343
339960,0migration/328047-21sh00:16:233
339960,0migration/323384-21taskset00:52:203
339960,0migration/314349-21sh21:38:443
339960,0migration/314181-21sendmail_mailtr21:14:003
329960,0watchdog/32601-21sh00:02:073
29805060,0irq/28-eth0-rx-0-21swapper/322:58:503
27160,0ktimersoftd/20-21swapper/223:31:302
19160,0ktimersoftd/10-21swapper/123:31:301
179739966,0cyclictest0-21swapper/200:26:432
179719965,0cyclictest11404-21munin-node23:48:530
8305050,0irq/26-0000:00:29365-21cut20:43:362
8305050,0irq/26-0000:00:26386-21latency_hist22:23:352
8305050,0irq/26-0000:00:23506-21latency_hist23:18:362
8305050,0irq/26-0000:00:22970-21latency_hist21:43:362
35150,0ktimersoftd/30-21swapper/323:19:213
339950,0migration/35889-21kthreadcore20:48:543
339950,0migration/34824-21taskset21:32:033
339950,0migration/33611-21kthreadcore19:38:533
339950,0migration/332683-21idleruntime21:48:533
339950,0migration/332267-21taskset19:38:013
339950,0migration/330112-21idleruntime00:18:533
339950,0migration/32986-21kthreadcore21:08:543
339950,0migration/327577-21kthreadcore22:03:543
339950,0migration/327397-21kthreadcore00:33:573
339950,0migration/327315-21fschecks_count22:23:523
339950,0migration/326386-21munin-node23:38:513
339950,0migration/32630-21kthreadcore23:23:543
339950,0migration/325046-21runrttasks23:54:023
339950,0migration/320168-21kthreadcore20:13:553
339950,0migration/315725-21ntp_offset22:13:563
339950,0migration/314339-21sh00:28:493
339950,0migration/313720-21switchtime19:44:013
339950,0migration/312213-21fschecks_time22:33:513
329950,0watchdog/35648-21grep20:03:543
329950,0watchdog/324390-21sensors_volt19:28:583
329950,0watchdog/315562-21kthreadcore00:08:553
329950,0watchdog/313313-21kthreadcore20:53:543
329950,0watchdog/312887-21munin-node23:08:593
329950,0watchdog/30-21swapper/321:58:553
329950,0watchdog/30-21swapper/321:23:513
29815050,0irq/29-eth0-tx-6499-21munin-node23:08:502
29815050,0irq/29-eth0-tx-32312-21fschecks_time21:48:512
29815050,0irq/29-eth0-tx-30737-21ssh00:38:402
29815050,0irq/29-eth0-tx-28229-21sed22:23:552
29815050,0irq/29-eth0-tx-23685-21irqcore00:33:552
29815050,0irq/29-eth0-tx-18186-21munin-node19:28:490
29815050,0irq/29-eth0-tx-16406-21munin-node21:58:522
29815050,0irq/29-eth0-tx-14322-21ssh21:38:402
29815050,0irq/29-eth0-tx-0-21swapper/222:35:062
29815050,0irq/29-eth0-tx-0-21swapper/020:43:490
29815050,0irq/29-eth0-tx-0-21swapper/019:34:030
29805050,0irq/28-eth0-rx-8598-21tr22:48:573
29805050,0irq/28-eth0-rx-8363-21fschecks_count21:53:503
29805050,0irq/28-eth0-rx-24545-21entropy00:53:513
29805050,0irq/28-eth0-rx-24330-21interrupts21:43:523
29805050,0irq/28-eth0-rx-21642-21kthreadcore22:18:543
29805050,0irq/28-eth0-rx-0-21swapper/323:48:543
29805050,0irq/28-eth0-rx-0-21swapper/322:55:353
29805050,0irq/28-eth0-rx-0-21swapper/322:43:553
29805050,0irq/28-eth0-rx-0-21swapper/322:09:083
29805050,0irq/28-eth0-rx-0-21swapper/320:33:523
29805050,0irq/28-eth0-rx-0-21swapper/300:41:063
29805050,0irq/28-eth0-rx-0-21swapper/300:26:133
29805050,0irq/28-eth0-rx-0-21swapper/300:08:183
27150,0ktimersoftd/20-21swapper/200:09:032
259950,0migration/227384-21kthreadcore00:53:562
259950,0migration/226043-21fschecks_count23:38:502
259950,0migration/211525-21sh22:49:262
249950,0watchdog/21986-21kthreadcore20:23:542
249950,0watchdog/217573-21kthreadcore22:53:552
249950,0watchdog/212600-21cut19:43:542
179729955,0cyclictest0-21swapper/121:43:321
179729955,0cyclictest0-21swapper/121:28:521
179729955,0cyclictest0-21swapper/119:48:361
179729950,0cyclictest0-21swapper/123:58:011
179729950,0cyclictest0-21swapper/121:56:081
179719955,0cyclictest0-21swapper/022:08:560
179719950,0cyclictest0-21swapper/023:35:200
179719950,0cyclictest0-21swapper/000:34:180
179950,0migration/17271-21munin-node22:08:581
179950,0migration/14929-21kthreadcore21:08:551
179950,0migration/131409-21munin-node19:33:571
179950,0migration/13054-21munin-node00:19:031
179950,0migration/129210-21kthreadcore21:03:541
179950,0migration/128560-21munin-node00:34:011
179950,0migration/12662-21munin-node19:59:111
179950,0migration/123288-21irqrtprio19:53:531
179950,0migration/119398-21sh22:37:561
179950,0migration/118239-21kthreadcore21:18:541
179950,0migration/118239-21kthreadcore21:18:541
179950,0migration/111579-21taskset00:08:141
169950,0watchdog/17311-21rm23:26:151
169950,0watchdog/128058-21kthreadcore20:18:541
169950,0watchdog/124885-21tune2fs00:53:511
169950,0watchdog/120040-21tr20:33:541
149950,0migration/022868-21sh23:17:120
149950,0migration/022655-21sh21:43:120
149950,0migration/020755-21sh00:29:530
149950,0migration/020184-21kthreadcore20:13:550
8305040,0irq/26-0000:00:0-21swapper/219:33:352
4140,0ktimersoftd/00-21swapper/022:22:110
339940,0migration/318819-21kthreadcore19:48:533
339940,0migration/318066-21sh23:33:543
329940,0watchdog/33947-21kthreadcore20:23:543
329940,0watchdog/331914-21timerandwakeup20:19:023
329940,0watchdog/30-21swapper/322:38:553
329940,0watchdog/30-21swapper/321:03:023
329940,0watchdog/30-21swapper/320:38:543
329940,0watchdog/30-21swapper/320:28:543
29815040,0irq/29-eth0-tx-648-21munin-node21:08:560
29815040,0irq/29-eth0-tx-4326-21ssh21:30:420
29815040,0irq/29-eth0-tx-3545-21ssh00:03:492
29815040,0irq/29-eth0-tx-3524-21snmpd21:13:450
29815040,0irq/29-eth0-tx-3524-21snmpd20:53:410
29815040,0irq/29-eth0-tx-3524-21snmpd20:28:370
29815040,0irq/29-eth0-tx-28438-21ssh22:43:472
29815040,0irq/29-eth0-tx-15491-21ssh00:48:402
29815040,0irq/29-eth0-tx-11208-21munin-node20:08:540
29815040,0irq/29-eth0-tx-0-21swapper/223:53:502
29815040,0irq/29-eth0-tx-0-21swapper/223:43:522
29815040,0irq/29-eth0-tx-0-21swapper/223:33:442
29815040,0irq/29-eth0-tx-0-21swapper/223:23:572
29815040,0irq/29-eth0-tx-0-21swapper/221:55:052
29815040,0irq/29-eth0-tx-0-21swapper/221:33:072
29815040,0irq/29-eth0-tx-0-21swapper/200:18:502
29815040,0irq/29-eth0-tx-0-21swapper/020:36:580
29815040,0irq/29-eth0-tx-0-21swapper/020:23:490
29805040,0irq/28-eth0-rx-5844-21kthreadcore23:43:533
29805040,0irq/28-eth0-rx-0-21swapper/322:28:513
29805040,0irq/28-eth0-rx-0-21swapper/321:33:563
29805040,0irq/28-eth0-rx-0-21swapper/321:18:483
29805040,0irq/28-eth0-rx-0-21swapper/321:18:483
29805040,0irq/28-eth0-rx-0-21swapper/320:43:543
29805040,0irq/28-eth0-rx-0-21swapper/300:43:573
259940,0migration/29548-21latency_hist22:13:352
259940,0migration/29056-21kthreadcore21:33:562
259940,0migration/25989-21kthreadcore22:28:532
259940,0migration/230647-21kthreadcore23:58:542
259940,0migration/223484-21kthreadcore22:58:542
259940,0migration/223035-21iostat19:53:522
259940,0migration/221895-21kthreadcore22:38:542
259940,0migration/219802-21irqcore20:13:542
259940,0migration/219793-21needreboot00:28:552
259940,0migration/216346-21irqrtprio20:33:532
249940,0watchdog/24357-21kthreadcore22:08:552
249940,0watchdog/24270-21seq20:48:422
249940,0watchdog/23657-21cut21:08:552
249940,0watchdog/228059-21kthreadcore20:18:542
249940,0watchdog/225945-21kthreadcore20:38:542
249940,0watchdog/2148292chrt21:17:192
249940,0watchdog/214670-21kthreadcore23:48:552
249940,0watchdog/20-21swapper/222:03:552
249940,0watchdog/20-21swapper/220:28:542
249940,0watchdog/20-21swapper/219:48:462
179739943,0cyclictest8085-21awk00:43:532
179739943,0cyclictest3524-21snmpd21:02:312
179739943,0cyclictest30108-21awk19:59:052
179739943,0cyclictest26994-21awk21:03:512
179739943,0cyclictest21636-21awk00:13:522
179739943,0cyclictest16308-21awk23:13:522
179739943,0cyclictest1179-21awk19:38:512
179729944,0cyclictest0-21swapper/122:25:281
179729944,0cyclictest0-21swapper/100:24:391
179729943,0cyclictest7494-21sadc20:28:361
179729943,0cyclictest3524-21snmpd23:40:481
179729943,0cyclictest3524-21snmpd23:34:031
179729943,0cyclictest3524-21snmpd23:18:471
179729943,0cyclictest3524-21snmpd22:51:021
179729943,0cyclictest3524-21snmpd22:22:021
179729943,0cyclictest3524-21snmpd20:46:001
179729943,0cyclictest3524-21snmpd20:30:001
179729943,0cyclictest3524-21snmpd19:41:591
179729943,0cyclictest3524-21snmpd00:53:331
179729943,0cyclictest3524-21snmpd00:47:031
179729943,0cyclictest21621-21awk00:13:521
179729943,0cyclictest14842-21awk00:28:511
179719944,0cyclictest0-21swapper/022:34:380
179719943,0cyclictest5358-21awk20:48:520
179719943,0cyclictest3571-21lldpd19:51:340
179719943,0cyclictest3571-21lldpd00:55:390
179719943,0cyclictest3524-21snmpd23:10:320
179719943,0cyclictest3524-21snmpd23:03:020
179719943,0cyclictest3524-21snmpd22:50:020
179719943,0cyclictest3524-21snmpd22:45:470
179719943,0cyclictest3524-21snmpd22:41:320
179719943,0cyclictest3524-21snmpd21:46:310
179719943,0cyclictest3524-21snmpd00:44:030
179719943,0cyclictest3524-21snmpd00:23:480
179719943,0cyclictest3250-21irqbalance23:20:020
179719943,0cyclictest30187-21awk19:59:060
179719943,0cyclictest26623-21awk23:38:530
179719943,0cyclictest22918-21awk19:53:510
179719943,0cyclictest21750-21awk00:13:530
179719943,0cyclictest10729-21awk22:13:510
179940,0migration/17064-21taskset21:52:031
179940,0migration/1697-21kthreadcore00:38:541
179940,0migration/15038-21if_eth020:03:531
179940,0migration/128004-21fschecks_time23:58:501
179940,0migration/127460-21kthreadcore22:03:541
179940,0migration/125948-21kthreadcore21:43:541
179940,0migration/122660-21fschecks_count20:38:501
179940,0migration/119019-21fschecks_count20:13:511
179940,0migration/118194-21taskset20:13:321
179940,0migration/115232-21kthreadcore22:53:541
179940,0migration/113779-21kthreadcore20:53:551
179940,0migration/111624-21kthreadcore21:13:551
179940,0migration/111373-21if_eth1.323:48:531
169940,0watchdog/18964-21tr20:48:541
169940,0watchdog/17348-21perl23:08:511
169940,0watchdog/132266-21kthreadcore22:43:551
169940,0watchdog/125293-21vmstat20:59:021
169940,0watchdog/121939-21ssh23:14:271
169940,0watchdog/10-21swapper/123:04:031
169940,0watchdog/10-21swapper/122:58:551
169940,0watchdog/10-21swapper/122:38:551
169940,0watchdog/10-21swapper/122:01:151
169940,0watchdog/10-21swapper/121:23:511
169940,0watchdog/10-21swapper/119:28:541
149940,0migration/032476-21cpuspeed_turbos23:23:490
149940,0migration/031514-21latency_hist21:48:360
149940,0migration/031289-21sh23:03:510
149940,0migration/02891-21aten_r1power_fr22:28:470
149940,0migration/027669-21hwlatdetect22:23:530
149940,0migration/027287-21aten_r1power_fr23:58:480
149940,0migration/022811-21runrttasks00:50:380
149940,0migration/021647-21kthreadcore21:58:550
149940,0migration/019450-21taskset00:11:140
8305030,0irq/26-0000:00:0-21swapper/220:08:392
29815030,0irq/29-eth0-tx-22188-21aten2.4-expect20:38:480
29815030,0irq/29-eth0-tx-18806-21telnet20:58:480
29815030,0irq/29-eth0-tx-0-21swapper/019:38:580
29805030,0irq/28-eth0-rx-0-21swapper/321:03:433
29805030,0irq/28-eth0-rx-0-21swapper/320:08:483
29805030,0irq/28-eth0-rx-0-21swapper/319:59:033
29805030,0irq/28-eth0-rx-0-21swapper/319:53:583
249930,0watchdog/223201-21fschecks_time21:23:512
179739932,0cyclictest4986-21awk20:03:522
179739932,0cyclictest16236-21awk21:18:522
179739932,0cyclictest16236-21awk21:18:522
179739930,0cyclictest20102-21grep19:28:532
179739930,0cyclictest12936-21sed20:53:542
179729932,0cyclictest3524-21snmpd22:28:581
179729932,0cyclictest3524-21snmpd21:35:311
179729932,0cyclictest14352-21kthreadcore00:08:541
179719932,0cyclictest7897-21sh21:53:480
179719932,0cyclictest3524-21snmpd23:53:480
179719932,0cyclictest3524-21snmpd21:03:430
179719932,0cyclictest3524-21snmpd20:04:000
179719932,0cyclictest2632-21awk23:43:500
179719932,0cyclictest26048-21awk22:03:530
179719932,0cyclictest22406-21munin-node21:23:500
179719932,0cyclictest15490-21tr21:18:490
179719932,0cyclictest15490-21tr21:18:490
179719932,0cyclictest13492-21cut22:53:490
179719930,0cyclictest32070-21grep00:18:560
179719930,0cyclictest26308-21perl20:18:510
179719930,0cyclictest13649-21python19:43:590
169930,0watchdog/129402-21diskmemload23:45:311
169930,0watchdog/112601-21tr19:43:541
169930,0watchdog/10-21swapper/122:13:511
149930,0migration/012711-21sh21:34:440
179719921,0cyclictest3366-21rm00:03:400
179719921,0cyclictest17970-21cyclictest00:38:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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