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2026-10-20 - 23:53
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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 Oct 20, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
452027978,0sleep00-21swapper/007:31:240
4967994949,0cyclictest13895-21md1_resync09:29:052
476123726,0sleep30-21swapper/307:34:123
473123329,0sleep10-21swapper/107:33:491
463723127,0sleep20-21swapper/207:32:462
8305060,0irq/26-0000:00:30292-21perl09:20:543
8305060,0irq/26-0000:00:19600-21kthreadcore08:26:023
8305060,0irq/26-0000:00:0-21swapper/310:06:023
49679960,0cyclictest0-21swapper/209:49:432
49669966,0cyclictest0-21swapper/109:16:001
49669965,0cyclictest18245-21irqrtprio10:30:591
49659960,0cyclictest0-21swapper/010:25:190
49659960,0cyclictest0-21swapper/008:36:130
339960,0migration/37446-21munin-node10:41:013
339960,0migration/37446-21munin-node10:41:013
339960,0migration/329324-21taskset11:31:533
339960,0migration/32260-21sh10:58:353
339960,0migration/322462-21sh13:05:033
339960,0migration/319584-21gltestperf10:50:563
339960,0migration/313605-21fschecks_time12:40:573
339960,0migration/312911-21hddtemp_smartct11:05:573
339960,0migration/310983-21switchtime09:26:083
329960,0watchdog/311919-21uptime11:21:103
29815060,0irq/29-eth0-tx-7671-21munin-node09:06:070
29805060,0irq/28-eth0-rx-921-40yum-updatesd-he10:40:003
29805060,0irq/28-eth0-rx-3524-21snmpd12:12:383
27160,0ktimersoftd/20-21swapper/210:47:162
149960,0migration/027462-21sh12:30:140
149960,0migration/017756-21gltestperf10:30:560
149960,0migration/014113-21sh10:09:110
8305050,0irq/26-0000:00:5709-21kthreadcore07:56:003
8305050,0irq/26-0000:00:32548-21if_eth1.208:16:023
8305050,0irq/26-0000:00:21009-21munin-node07:45:583
8305050,0irq/26-0000:00:19172-21kthreadcore08:05:583
8305050,0irq/26-0000:00:12837-21tr08:01:013
8305050,0irq/26-0000:00:0-21swapper/309:16:003
49679955,0cyclictest0-21swapper/208:50:262
49679950,0cyclictest0-21swapper/210:25:402
49679950,0cyclictest0-21swapper/209:43:442
49669955,0cyclictest0-21swapper/112:06:071
49669955,0cyclictest0-21swapper/108:14:501
49669955,0cyclictest0-21swapper/107:55:541
49669950,0cyclictest0-21swapper/111:50:301
49669950,0cyclictest0-21swapper/108:52:491
49659955,0cyclictest0-21swapper/011:21:550
49659955,0cyclictest0-21swapper/011:15:460
339950,0migration/37801-21munin-node11:40:593
339950,0migration/36632-21cpuspeed_turbos08:20:553
339950,0migration/35206-21kthreadcore08:41:003
339950,0migration/332753-21runrttasks11:55:473
339950,0migration/329385-21idleruntime08:35:593
339950,0migration/327142-21kthreadcore08:55:573
339950,0migration/325863-21kthreadcore11:51:003
339950,0migration/323855-21df_abs10:15:573
339950,0migration/323659-21kthreadcore08:31:003
339950,0migration/321672-21munin-node12:45:573
339950,0migration/321102-21munin-node11:10:573
339950,0migration/320206-21kthreadcore10:31:003
339950,0migration/319846-21kthreadcore11:46:023
339950,0migration/318761-21fschecks_time08:50:553
339950,0migration/317356-21timerwakeupswit12:21:133
339950,0migration/316437-21irqrtprio10:11:003
339950,0migration/312582-21kthreadcore09:06:043
339950,0migration/311301-21munin-node07:36:033
339950,0migration/31009-21kthreadcore12:51:033
329950,0watchdog/330659-21munin-node08:11:133
329950,0watchdog/330128-21sh10:00:463
329950,0watchdog/313381-21perl07:40:573
329950,0watchdog/30-21swapper/312:40:103
329950,0watchdog/30-21swapper/312:16:023
329950,0watchdog/30-21swapper/311:36:143
29815050,0irq/29-eth0-tx-314-21munin-node11:56:012
29815050,0irq/29-eth0-tx-29772-21sendmail_mailst10:16:072
29815050,0irq/29-eth0-tx-21318-21ssh11:28:272
29815050,0irq/29-eth0-tx-15700-21munin-node11:45:592
29815050,0irq/29-eth0-tx-0-21swapper/212:39:072
29815050,0irq/29-eth0-tx-0-21swapper/211:40:112
29815050,0irq/29-eth0-tx-0-21swapper/211:35:262
29815050,0irq/29-eth0-tx-0-21swapper/009:36:010
29815050,0irq/29-eth0-tx-0-21swapper/009:10:550
29815050,0irq/29-eth0-tx-0-21swapper/008:41:020
29815050,0irq/29-eth0-tx-0-21swapper/008:08:050
29815050,0irq/29-eth0-tx-0-21swapper/007:38:000
29805050,0irq/28-eth0-rx-6314-21runrttasks12:01:553
29805050,0irq/28-eth0-rx-29929-21expr11:15:573
29805050,0irq/28-eth0-rx-15371-21kernelversion11:26:013
29805050,0irq/28-eth0-rx-10437-21df10:45:563
29805050,0irq/28-eth0-rx-0-21swapper/312:28:443
29805050,0irq/28-eth0-rx-0-21swapper/311:01:333
29805050,0irq/28-eth0-rx-0-21swapper/309:51:003
29805050,0irq/28-eth0-rx-0-21swapper/309:36:233
29805050,0irq/28-eth0-rx-0-21swapper/307:51:023
27150,0ktimersoftd/20-21swapper/212:09:242
27150,0ktimersoftd/20-21swapper/209:00:132
259950,0migration/224717-21fschecks_count08:11:012
259950,0migration/219968-21kthreadcore08:05:592
259950,0migration/215192-21cpuspeed_turbos10:10:562
249950,0watchdog/223492-21kthreadcore09:36:012
249950,0watchdog/21172-21kthreadcore12:31:022
179950,0migration/17353-21kthreadcore12:36:031
179950,0migration/131689-21kthreadcore12:51:021
179950,0migration/131214-21kthreadcore08:36:011
179950,0migration/129090-21aten_r1power_fr11:15:551
179950,0migration/128664-21kthreadcore12:11:011
179950,0migration/121999-21munin-node09:55:581
179950,0migration/121398-21df08:30:551
179950,0migration/113780-21kthreadcore08:46:011
179950,0migration/113266-21taskset08:23:141
179950,0migration/112940-21munin-node09:30:581
179950,0migration/112031-21kthreadcore10:46:011
179950,0migration/110258-21kthreadcore09:06:041
149950,0migration/08367-21runrttasks10:41:230
149950,0migration/08367-21runrttasks10:41:230
149950,0migration/07211-21taskset09:03:220
149950,0migration/06470-21fschecks_count12:55:570
149950,0migration/04838-21fschecks_time12:35:580
149950,0migration/03776-21mdstat10:01:020
149950,0migration/031332-21latency_hist08:15:420
149950,0migration/030816-21kthreadcore08:55:590
149950,0migration/03054-21kthreadcore12:51:030
149950,0migration/028530-21sh12:47:570
149950,0migration/028037-21taskset08:34:320
149950,0migration/027517-21kthreadcore11:51:000
149950,0migration/027199-21munin-node07:50:550
149950,0migration/027128-21taskset10:55:490
149950,0migration/024671-21fschecks_count08:11:010
149950,0migration/022866-21irqcore09:56:020
149950,0migration/022671-21kthreadcore11:11:010
149950,0migration/022209-21kthreadcore07:45:590
149950,0migration/018442-21timerwakeupswit11:06:080
149950,0migration/01792-21switchtime09:41:090
149950,0migration/014387-21fschecks_time08:25:560
149950,0migration/013071-21kthreadcore12:21:050
149950,0migration/012913-21gltestperf09:30:570
149950,0migration/010907-21fschecks_time10:45:570
149950,0migration/010448-21munin-node09:46:070
149950,0migration/010266-21kthreadcore11:41:030
8305040,0irq/26-0000:00:16107-21if_eth109:10:593
8305040,0irq/26-0000:00:0-21swapper/308:45:583
49679943,0cyclictest4473-21awk11:00:592
49679943,0cyclictest3571-21lldpd13:00:492
49679943,0cyclictest3571-21lldpd11:40:492
49679943,0cyclictest3571-21lldpd08:18:452
49679943,0cyclictest3571-21lldpd08:02:152
49679943,0cyclictest3571-21lldpd07:55:452
49679943,0cyclictest3571-21lldpd07:50:452
49679943,0cyclictest3250-21irqbalance12:51:102
49679943,0cyclictest3250-21irqbalance09:30:492
49679943,0cyclictest3250-21irqbalance09:20:492
49679943,0cyclictest3250-21irqbalance09:16:492
49679943,0cyclictest3250-21irqbalance09:10:592
49679943,0cyclictest3250-21irqbalance08:35:592
49679943,0cyclictest3250-21irqbalance08:30:492
49679943,0cyclictest3250-21irqbalance07:45:582
49679943,0cyclictest30091-21awk11:15:582
49679943,0cyclictest10249-21awk12:01:032
49669943,0cyclictest3524-21snmpd11:42:081
49669943,0cyclictest3524-21snmpd11:31:531
49669943,0cyclictest3524-21snmpd10:24:521
49669943,0cyclictest3524-21snmpd07:48:061
49669943,0cyclictest32020-21awk11:36:051
49669943,0cyclictest26378-21awk10:35:581
49669943,0cyclictest25248-21awk11:50:581
49669943,0cyclictest21577-21awk11:10:591
49669943,0cyclictest19725-21awk10:50:581
49669943,0cyclictest14807-21awk08:25:591
49669943,0cyclictest13907-21awk09:50:581
49659944,0cyclictest23257-21kworker/0:010:17:460
49659944,0cyclictest0-21swapper/011:57:330
49659944,0cyclictest0-21swapper/008:25:110
49659943,0cyclictest4474-21kworker/0:012:16:000
49659943,0cyclictest32005-21awk11:36:040
49659943,0cyclictest23489-21awk11:31:000
49659943,0cyclictest16010-21awk10:10:590
49659943,0cyclictest13798-21awk12:40:590
49659940,0cyclictest10740-21munin-node08:46:070
339940,0migration/37631-21kthreadcore12:56:013
339940,0migration/311943-21latency_hist09:30:433
329940,0watchdog/35575-21irqrtprio09:46:023
329940,0watchdog/30-21swapper/309:41:013
29815040,0irq/29-eth0-tx-26131-21munin-node12:11:022
29815040,0irq/29-eth0-tx-0-21swapper/212:55:572
29815040,0irq/29-eth0-tx-0-21swapper/212:46:002
29815040,0irq/29-eth0-tx-0-21swapper/212:25:592
29815040,0irq/29-eth0-tx-0-21swapper/211:51:092
29815040,0irq/29-eth0-tx-0-21swapper/211:20:562
29815040,0irq/29-eth0-tx-0-21swapper/211:10:512
29815040,0irq/29-eth0-tx-0-21swapper/210:55:532
29815040,0irq/29-eth0-tx-0-21swapper/210:50:482
29815040,0irq/29-eth0-tx-0-21swapper/210:40:522
29815040,0irq/29-eth0-tx-0-21swapper/210:40:522
29815040,0irq/29-eth0-tx-0-21swapper/210:25:542
29815040,0irq/29-eth0-tx-0-21swapper/210:08:082
29815040,0irq/29-eth0-tx-0-21swapper/210:01:122
29815040,0irq/29-eth0-tx-0-21swapper/209:55:542
29815040,0irq/29-eth0-tx-0-21swapper/209:51:252
29815040,0irq/29-eth0-tx-0-21swapper/009:25:530
29815040,0irq/29-eth0-tx-0-21swapper/009:20:520
29815040,0irq/29-eth0-tx-0-21swapper/008:01:030
29815040,0irq/29-eth0-tx-0-21swapper/007:55:560
29805040,0irq/28-eth0-rx-0-21swapper/312:31:013
29805040,0irq/28-eth0-rx-0-21swapper/312:06:193
29805040,0irq/28-eth0-rx-0-21swapper/310:26:283
29805040,0irq/28-eth0-rx-0-21swapper/310:21:043
29805040,0irq/28-eth0-rx-0-21swapper/309:56:483
29805040,0irq/28-eth0-rx-0-21swapper/309:03:153
259940,0migration/28956-21kthreadcore08:41:012
259940,0migration/223030-21kthreadcore08:51:002
259940,0migration/218564-21kthreadcore12:41:022
259940,0migration/217170-21kthreadcore08:26:012
259940,0migration/215833-21kthreadcore11:06:012
259940,0migration/213033-21runrttasks09:06:052
259940,0migration/210896-21kthreadcore08:21:022
249940,0watchdog/27414-21cat09:05:372
249940,0watchdog/226385-21if_err_eth110:35:582
249940,0watchdog/216900-21aten_r1power_fr10:30:542
249940,0watchdog/215999-21kthreadcore07:41:012
249940,0watchdog/20-21swapper/212:21:062
249940,0watchdog/20-21swapper/212:16:022
249940,0watchdog/20-21swapper/207:36:012
179940,0migration/18614-21kthreadcore09:26:011
179940,0migration/16574-21irqcore11:21:011
179940,0migration/15144-21latency_hist07:35:421
179940,0migration/14817-21kthreadcore10:41:001
179940,0migration/14817-21kthreadcore10:41:001
179940,0migration/131893-21kthreadcore10:01:011
179940,0migration/127799-21taskset09:40:551
179940,0migration/120254-21timerandwakeup11:26:091
179940,0migration/120194-21kthreadcore08:05:591
179940,0migration/11927-21taskset10:57:391
179940,0migration/116159-21kthreadcore12:21:061
179940,0migration/11472-21missed_timers12:31:031
179940,0migration/114715-21kthreadcore12:01:051
179940,0migration/114096-21kthreadcore10:26:011
179940,0migration/111977-21ksmtuned09:49:161
179940,0migration/110893-21kthreadcore10:06:021
169940,0watchdog/19373-21memory08:41:011
169940,0watchdog/17928-21ssh11:58:141
169940,0watchdog/16056-21grep12:16:021
169940,0watchdog/125799-21fschecks_count08:55:531
169940,0watchdog/123899-21df_inode10:15:581
169940,0watchdog/123495-21kthreadcore09:36:011
169940,0watchdog/119767-21ssh12:42:141
169940,0watchdog/119198-21kthreadcore10:11:021
169940,0watchdog/119002-21ssh11:07:181
169940,0watchdog/111214-21ssh11:04:261
169940,0watchdog/10-21swapper/113:01:021
169940,0watchdog/10-21swapper/112:56:021
169940,0watchdog/10-21swapper/112:46:021
169940,0watchdog/10-21swapper/112:25:461
149940,0migration/028160-21kthreadcore10:36:000
149940,0migration/023798-21kthreadcore10:51:010
149940,0migration/022052-21kthreadcore12:06:010
149940,0migration/020256-21kthreadcore13:01:030
149940,0migration/016987-21kthreadcore11:26:010
49669933,0cyclictest0-21swapper/107:50:521
49669932,0cyclictest30315-21tune2fs09:20:541
49669932,0cyclictest16084-21awk09:10:591
49669932,0cyclictest15784-21sensors08:01:051
49669931,0cyclictest15752-21kthreadcore07:41:011
49659933,0cyclictest4474-21kworker/0:012:10:500
49659933,0cyclictest23257-21kworker/0:011:01:140
49659933,0cyclictest23257-21kworker/0:009:50:500
49659933,0cyclictest10434-21kworker/0:108:50:540
49659932,0cyclictest23337-21awk09:15:570
49659932,0cyclictest18134-21grep11:46:010
49659932,0cyclictest13609-21awk07:40:590
49659932,0cyclictest10914-21cut10:26:000
49659930,0cyclictest9979-21perl12:01:000
49659930,0cyclictest28353-21diskstats12:30:570
169930,0watchdog/10-21swapper/109:05:371
169920,0watchdog/10-21swapper/108:15:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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