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2026-06-09 - 13:40
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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 376 highest latencies:
System rack1slot2.osadl.org (updated Tue Jun 09, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1480426453,0sleep20-21swapper/207:21:172
15184994848,0cyclictest28020-21md1_resync08:47:102
1494024645,0sleep10-21swapper/107:22:521
1506324230,0sleep00-21swapper/007:24:110
15183993535,0cyclictest191ktimersoftd/108:47:101
1502723227,0sleep30-21swapper/307:23:503
15184991313,0cyclictest83050irq/26-0000:00:11:01:402
15184991212,0cyclictest18202-21sadc11:44:482
151849988,0cyclictest83050irq/26-0000:00:10:34:102
339970,0migration/38517-21sh08:00:103
151849977,0cyclictest83050irq/26-0000:00:11:36:502
151849977,0cyclictest83050irq/26-0000:00:09:56:132
151829974,0cyclictest9391-21munin-run12:34:480
8305060,0irq/26-0000:00:29104-21tr07:55:063
8305060,0irq/26-0000:00:28877-21port_sshpriv09:20:083
8305060,0irq/26-0000:00:24245-21irqstats07:30:043
8305060,0irq/26-0000:00:18986-21munin-node10:50:032
8305060,0irq/26-0000:00:13346-21munin-node10:25:092
8305060,0irq/26-0000:00:12879-21df07:45:003
8305060,0irq/26-0000:00:10198-21python11:55:102
339960,0migration/39245-21irqcore09:10:043
339960,0migration/324328-21sh11:29:543
339960,0migration/321191-21sh10:14:313
339960,0migration/31846-21sh12:45:313
339960,0migration/318230-21latency_hist11:44:483
329960,0watchdog/34473-21cut12:50:033
29805060,0irq/28-eth0-rx-5184-21iostat_ios10:05:043
29805060,0irq/28-eth0-rx-3400-21kthreadcore11:15:073
27160,0ktimersoftd/20-21swapper/210:12:002
19160,0ktimersoftd/10-21swapper/112:44:121
19160,0ktimersoftd/10-21swapper/110:39:111
179960,0migration/117040-21sh12:36:301
151849966,0cyclictest83050irq/26-0000:00:11:52:162
151849966,0cyclictest83050irq/26-0000:00:09:31:512
151849966,0cyclictest3524-21snmpd12:27:402
151849966,0cyclictest0-21swapper/211:10:012
151849966,0cyclictest0-21swapper/211:10:012
151849965,0cyclictest0-21swapper/212:01:162
151849960,0cyclictest0-21swapper/208:09:492
151839966,0cyclictest0-21swapper/112:06:031
151839960,0cyclictest29783-21diskmemload10:54:571
151839960,0cyclictest0-21swapper/111:44:081
151829960,0cyclictest1999-21md0_raid112:46:100
151829960,0cyclictest0-21swapper/012:24:050
8305050,0irq/26-0000:00:8536-21ssh12:32:312
8305050,0irq/26-0000:00:5346-21ssh09:28:092
8305050,0irq/26-0000:00:4765-21perl10:05:012
8305050,0irq/26-0000:00:31852-21tr07:35:053
8305050,0irq/26-0000:00:31252-21yum11:30:172
8305050,0irq/26-0000:00:30437-21cpu11:15:002
8305050,0irq/26-0000:00:3005-21kthreadcore10:40:042
8305050,0irq/26-0000:00:28652-21if_eth010:00:042
8305050,0irq/26-0000:00:26204-21ssh12:42:342
8305050,0irq/26-0000:00:25770-21uname08:15:043
8305050,0irq/26-0000:00:24298-21ssh09:39:502
8305050,0irq/26-0000:00:21878-21kthreadcore08:55:053
8305050,0irq/26-0000:00:21758-21munin-node12:05:012
8305050,0irq/26-0000:00:1691-21perl09:45:012
8305050,0irq/26-0000:00:16712-21irqcore09:15:043
8305050,0irq/26-0000:00:15548-21ssh12:19:572
8305050,0irq/26-0000:00:13727-21sh12:15:382
8305050,0irq/26-0000:00:13334-21kthreadcore09:50:062
8305050,0irq/26-0000:00:0-21swapper/308:50:043
8305050,0irq/26-0000:00:0-21swapper/308:39:583
8305050,0irq/26-0000:00:0-21swapper/308:20:063
4150,0ktimersoftd/00-21swapper/010:14:300
339950,0migration/37559-21fschecks_count10:25:013
339950,0migration/37292-21idleruntime09:30:033
339950,0migration/35808-21fschecks_time07:40:003
339950,0migration/35150-21kthreadcore09:05:063
339950,0migration/34423-21fschecks_time11:55:003
339950,0migration/330183-21taskset12:09:593
339950,0migration/329507-21kthreadcore12:25:083
339950,0migration/327923-21proc_pri10:15:123
339950,0migration/327464-21aten_r1power_en10:55:003
339950,0migration/324077-21kthreadcore11:10:053
339950,0migration/324077-21kthreadcore11:10:053
339950,0migration/319848-21aten_r1power_fr07:49:583
339950,0migration/319565-21munin-node11:45:033
339950,0migration/318508-21taskset10:49:533
339950,0migration/318419-21kthreadcore07:25:043
339950,0migration/317289-21kthreadcore09:35:053
339950,0migration/314966-21kthreadcore08:05:063
329950,0watchdog/3173792sleep310:47:233
329950,0watchdog/316312-21kthreadcore08:30:073
329950,0watchdog/312525-21kthreadcore12:15:073
329950,0watchdog/312027-21kthreadcore11:20:073
29815050,0irq/29-eth0-tx-25760-21ssh11:46:292
29815050,0irq/29-eth0-tx-15802-21diskstats09:35:012
29815050,0irq/29-eth0-tx-10137-21fschecks_count12:35:042
29815050,0irq/29-eth0-tx-0-21swapper/211:05:002
29815050,0irq/29-eth0-tx-0-21swapper/210:57:082
29815050,0irq/29-eth0-tx-0-21swapper/210:15:262
29815050,0irq/29-eth0-tx-0-21swapper/009:20:000
29815050,0irq/29-eth0-tx-0-21swapper/009:00:090
29815050,0irq/29-eth0-tx-0-21swapper/008:30:060
29805050,0irq/28-eth0-rx-7911-21ssh10:40:273
29805050,0irq/28-eth0-rx-28901-21grep09:00:063
29805050,0irq/28-eth0-rx-26409-21cat10:35:073
29805050,0irq/28-eth0-rx-24430-21kthreadcore12:40:083
29805050,0irq/28-eth0-rx-22758-21ps12:05:063
29805050,0irq/28-eth0-rx-19150-21kthreadcore12:20:053
29805050,0irq/28-eth0-rx-10177-21cpu09:50:003
29805050,0irq/28-eth0-rx-0-21swapper/312:35:093
29805050,0irq/28-eth0-rx-0-21swapper/312:00:063
29805050,0irq/28-eth0-rx-0-21swapper/311:50:493
29805050,0irq/28-eth0-rx-0-21swapper/311:01:023
29805050,0irq/28-eth0-rx-0-21swapper/309:55:053
29805050,0irq/28-eth0-rx-0-21swapper/308:25:023
27150,0ktimersoftd/20-21swapper/208:27:382
259950,0migration/232356-21kthreadcore12:10:092
259950,0migration/232130-21sh10:37:332
259950,0migration/229623-21kthreadcore12:45:042
259950,0migration/224052-21kthreadcore08:55:062
259950,0migration/222418-21sh11:25:162
259950,0migration/220174-21kthreadcore07:25:052
259950,0migration/214215-21cpuspeed_turbos08:30:012
259950,0migration/210128-21kthreadcore11:20:072
249950,0watchdog/210928-21awk10:45:032
19150,0ktimersoftd/10-21swapper/108:07:121
179950,0migration/19739-21latency11:55:051
179950,0migration/19273-21taskset08:04:451
179950,0migration/14820-21gltestperf11:00:021
179950,0migration/14199-21pmu-power11:15:091
179950,0migration/13230-21kthreadcore11:35:061
179950,0migration/129982-21latency_hist09:24:481
179950,0migration/12479-21kthreadcore10:20:091
179950,0migration/122490-21sh12:20:311
179950,0migration/122482-21idleruntime-cro09:19:481
179950,0migration/121842-21sendmail_mailtr09:35:101
179950,0migration/118685-21latency_hist09:54:481
179950,0migration/11608-21switchtime10:00:141
179950,0migration/112702-21kthreadcore10:45:051
169950,0watchdog/118064-21cut12:00:071
169950,0watchdog/110589-21unixbench_singl12:50:151
151849955,0cyclictest0-21swapper/208:50:392
151849950,0cyclictest0-21swapper/207:55:102
151839955,0cyclictest0-21swapper/112:24:581
151839955,0cyclictest0-21swapper/108:43:281
151839954,0cyclictest3524-21snmpd10:18:181
151839950,0cyclictest0-21swapper/111:22:041
151829955,0cyclictest28021-21md0_resync08:52:210
151829955,0cyclictest0-21swapper/012:50:160
151829955,0cyclictest0-21swapper/011:55:140
151829955,0cyclictest0-21swapper/011:40:440
151829955,0cyclictest0-21swapper/011:10:370
151829955,0cyclictest0-21swapper/011:10:370
151829955,0cyclictest0-21swapper/010:49:580
151829955,0cyclictest0-21swapper/009:57:190
151829950,0cyclictest0-21swapper/012:28:110
151829950,0cyclictest0-21swapper/012:01:520
151829950,0cyclictest0-21swapper/011:23:140
151829950,0cyclictest0-21swapper/010:41:270
151829950,0cyclictest0-21swapper/008:35:100
151829950,0cyclictest0-21swapper/007:32:250
149950,0migration/09106-21kthreadcore11:00:060
149950,0migration/031638-21irqcore10:20:070
149950,0migration/020789-21sh11:08:480
149950,0migration/02052-21kthreadcore08:40:050
149950,0migration/016344-21fschecks_time10:30:000
149950,0migration/015982-21latency09:50:070
8305040,0irq/26-0000:00:0-21swapper/308:45:493
8305040,0irq/26-0000:00:0-21swapper/308:10:063
8305040,0irq/26-0000:00:0-21swapper/210:20:082
329940,0watchdog/36712-21kthreadcore11:35:073
329940,0watchdog/317478-21kthreadcore11:05:073
29815040,0irq/29-eth0-tx-3524-21snmpd08:26:560
29815040,0irq/29-eth0-tx-0-21swapper/009:25:000
29815040,0irq/29-eth0-tx-0-21swapper/008:20:090
29815040,0irq/29-eth0-tx-0-21swapper/008:15:140
29815040,0irq/29-eth0-tx-0-21swapper/008:10:080
29805040,0irq/28-eth0-rx-16702-21cat11:25:033
29805040,0irq/28-eth0-rx-0-21swapper/312:29:543
29805040,0irq/28-eth0-rx-0-21swapper/310:29:503
29805040,0irq/28-eth0-rx-0-21swapper/310:20:073
29805040,0irq/28-eth0-rx-0-21swapper/310:01:033
29805040,0irq/28-eth0-rx-0-21swapper/309:46:103
29805040,0irq/28-eth0-rx-0-21swapper/309:41:023
29805040,0irq/28-eth0-rx-0-21swapper/309:24:583
259940,0migration/230760-21fschecks_time07:35:012
259940,0migration/230618-21switchtime08:15:122
259940,0migration/225034-21kthreadcore08:35:052
259940,0migration/224850-21kthreadcore07:30:042
259940,0migration/221030-21kthreadcore09:15:052
249940,0watchdog/20-21swapper/212:50:072
179940,0migration/128779-21kthreadcore11:30:081
179940,0migration/12560-21kthreadcore12:10:091
179940,0migration/123849-21kthreadcore07:50:051
179940,0migration/123277-21kthreadcore11:10:051
179940,0migration/123277-21kthreadcore11:10:051
179940,0migration/122680-21irqrtprio08:35:041
179940,0migration/120338-21kthreadcore11:45:051
179940,0migration/118654-21kthreadcore07:25:041
179940,0migration/11733-21hddtemp_smartct12:30:031
179940,0migration/116571-21kthreadcore07:45:051
179940,0migration/114813-21kthreadcore08:50:051
169940,0watchdog/17419-21perl08:24:591
169940,0watchdog/13952-21munin-node10:04:591
169940,0watchdog/129538-21cut09:40:071
169940,0watchdog/127391-21ssh11:49:591
169940,0watchdog/121261-21kthreadcore08:10:061
169940,0watchdog/119358-21cat08:55:031
169940,0watchdog/114852-21ssh12:18:391
169940,0watchdog/10-21swapper/110:12:191
169940,0watchdog/10-21swapper/107:55:061
169940,0watchdog/10-21swapper/107:34:581
151849944,0cyclictest0-21swapper/209:21:332
151849944,0cyclictest0-21swapper/208:44:402
151849944,0cyclictest0-21swapper/207:44:362
151849943,0cyclictest9986-21tune2fs08:05:012
151849943,0cyclictest3571-21lldpd09:07:512
151849943,0cyclictest3524-21snmpd09:11:182
151849943,0cyclictest3524-21snmpd09:04:032
151849943,0cyclictest3524-21snmpd08:02:022
151849943,0cyclictest32631-21awk08:20:032
151849943,0cyclictest20855-21awk07:50:022
151839944,0cyclictest0-21swapper/112:45:001
151839944,0cyclictest0-21swapper/110:40:461
151839944,0cyclictest0-21swapper/109:01:071
151839943,0cyclictest3524-21snmpd10:31:191
151839943,0cyclictest3524-21snmpd09:45:181
151839943,0cyclictest3524-21snmpd09:32:181
151839943,0cyclictest3524-21snmpd09:13:031
151839943,0cyclictest3524-21snmpd09:05:331
151839943,0cyclictest3524-21snmpd08:14:471
151839943,0cyclictest3524-21snmpd07:30:171
151839943,0cyclictest32616-21awk08:20:031
151839943,0cyclictest23852-21awk09:20:031
151839943,0cyclictest19661-21awk10:50:061
151839943,0cyclictest16705-21awk11:25:031
151839943,0cyclictest13867-21awk11:05:051
151829944,0cyclictest0-21swapper/011:45:180
151829944,0cyclictest0-21swapper/010:36:150
151829944,0cyclictest0-21swapper/010:17:390
151829944,0cyclictest0-21swapper/009:35:050
151829943,0cyclictest3524-21snmpd12:09:500
151829943,0cyclictest3524-21snmpd10:47:490
151829943,0cyclictest3524-21snmpd09:40:330
151829943,0cyclictest3524-21snmpd07:50:020
151829943,0cyclictest3250-21irqbalance09:10:340
151829943,0cyclictest3250-21irqbalance09:06:340
151829943,0cyclictest1902-21awk11:35:040
151829941,0cyclictest0-21swapper/007:59:590
151829940,0cyclictest9526-21munin-node08:05:030
149940,0migration/09726-21kthreadcore12:15:070
149940,0migration/09072-21kthreadcore07:40:040
149940,0migration/08078-21taskset09:45:350
149940,0migration/027483-21aten2.4-expect10:55:000
149940,0migration/023372-21runrttasks11:27:550
149940,0migration/021321-21ksmtuned12:04:590
149940,0migration/019165-21kthreadcore09:15:050
149940,0migration/015333-21latency_hist07:24:480
149940,0migration/01435-21taskset07:55:310
149940,0migration/013979-21taskset10:25:540
149940,0migration/013671-21munin-node07:45:040
8305030,0irq/26-0000:00:0-21swapper/308:34:493
249930,0watchdog/20-21swapper/207:44:502
179930,0migration/16308-21irqcore07:40:031
151839932,0cyclictest8967-21cat10:25:041
151839932,0cyclictest3524-21snmpd09:49:481
151839932,0cyclictest13971-21aten2.4-expect08:30:001
151829933,0cyclictest6041-21kworker/0:208:44:510
151829933,0cyclictest0-21swapper/012:41:160
151829932,0cyclictest3571-21lldpd07:34:510
151829932,0cyclictest31313-21awk11:15:030
151829932,0cyclictest29783-21diskmemload11:34:380
151829932,0cyclictest28462-21awk11:50:040
151829932,0cyclictest15065-21sadc09:34:480
151829930,0cyclictest11380-21diskmemload10:06:450
151829930,0cyclictest10115-21diskstats12:35:030
151829920,0cyclictest18329-21runrttasks08:54:490
151829920,0cyclictest0-21swapper/009:59:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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