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2026-08-20 - 01:29
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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 all highest latencies:
System rack1slot2.osadl.org (updated Thu Aug 20, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3256925554,0sleep20-21swapper/219:28:092
2583223829,0sleep10-21swapper/119:25:401
3258123728,0sleep30-21swapper/319:28:183
3243723524,0sleep00-21swapper/019:26:350
3849983,0cyclictest3524-21snmpd19:58:080
3849983,0cyclictest3524-21snmpd19:36:080
3849976,0cyclictest0-21swapper/000:10:560
3849973,0cyclictest19972-21awk00:05:550
3849972,0cyclictest3524-21snmpd22:27:400
3849972,0cyclictest3524-21snmpd21:42:090
3849972,0cyclictest3524-21snmpd00:31:420
3849972,0cyclictest2732-21awk23:55:540
3849970,0cyclictest26038-21munin-node20:10:590
3909966,0cyclictest0-21swapper/200:13:082
3909960,0cyclictest0-21swapper/223:48:232
3849960,0cyclictest3524-21snmpd21:18:300
35160,0ktimersoftd/30-21swapper/322:42:443
339960,0migration/38730-21sh23:56:553
339960,0migration/38628-21sh22:24:003
339960,0migration/332108-21unixbench_singl23:51:013
339960,0migration/331398-21munin-node00:50:533
339960,0migration/324637-21sh23:49:023
339960,0migration/323206-21fschecks_time00:45:533
339960,0migration/319055-21sh00:21:413
29805060,0irq/28-eth0-rx-30774-21ssh23:32:313
29805060,0irq/28-eth0-rx-15572-21ssh22:09:433
8305050,0irq/26-0000:00:3924-21kthreadcore23:35:562
3909955,0cyclictest11688-21diskmemload00:31:252
3909955,0cyclictest0-21swapper/222:34:362
3909955,0cyclictest0-21swapper/222:12:222
3909955,0cyclictest0-21swapper/221:47:182
3909955,0cyclictest0-21swapper/200:18:582
3909954,0cyclictest3571-21lldpd22:41:582
3909950,0cyclictest0-21swapper/223:17:472
3909950,0cyclictest0-21swapper/223:08:292
3909950,0cyclictest0-21swapper/222:08:252
3909950,0cyclictest0-21swapper/221:39:062
3859950,0cyclictest0-21swapper/123:43:321
3859950,0cyclictest0-21swapper/123:03:291
3859950,0cyclictest0-21swapper/122:44:251
3859950,0cyclictest0-21swapper/122:11:091
3859950,0cyclictest0-21swapper/100:30:021
3859950,0cyclictest0-21swapper/100:03:051
339950,0migration/39448-21kthreadcore20:40:573
339950,0migration/38289-21cpu20:20:533
339950,0migration/35371-21fschecks_time23:00:503
339950,0migration/33456-21kthreadcore23:35:563
339950,0migration/332308-21kthreadcore00:30:573
339950,0migration/330220-21latency_hist23:15:393
339950,0migration/329060-21fschecks_count22:55:543
339950,0migration/326963-21sh22:52:043
339950,0migration/326085-21latency_hist20:55:383
339950,0migration/325550-21kthreadcore21:35:573
339950,0migration/325254-21switchtime00:06:043
339950,0migration/323310-21gltestperf19:45:523
339950,0migration/322159-21taskset23:27:173
339950,0migration/320046-21kthreadcore22:30:573
339950,0migration/318756-21runrttasks21:32:003
339950,0migration/317020-21kthreadcore21:50:573
339950,0migration/316059-21latency_hist22:10:393
339950,0migration/316049-21unixbench-2d22:26:053
339950,0migration/315836-21kthreadcore20:45:573
339950,0migration/315751-21munin-node20:25:513
339950,0migration/311063-21kthreadcore21:05:553
339950,0migration/310798-21timerwakeupswit19:56:033
329950,0watchdog/3298050irq/28-eth0-rx-00:15:583
329950,0watchdog/32856-21cut21:20:583
329950,0watchdog/328411-21load21:15:583
329950,0watchdog/315675-21kthreadcore23:05:583
29815050,0irq/29-eth0-tx-6510-21munin-node23:21:052
29815050,0irq/29-eth0-tx-5056-21ssh22:00:582
29815050,0irq/29-eth0-tx-30381-21tr22:55:572
29815050,0irq/29-eth0-tx-22517-21munin-node00:45:532
29815050,0irq/29-eth0-tx-15198-21ssh23:41:222
29815050,0irq/29-eth0-tx-13014-21ssh00:38:412
29815050,0irq/29-eth0-tx-10018-21fschecks_count22:25:522
29805050,0irq/28-eth0-rx-8806-21diskstats23:40:513
29805050,0irq/28-eth0-rx-8071-21kthreadcore21:25:563
29805050,0irq/28-eth0-rx-6992-21ssh22:04:283
29805050,0irq/28-eth0-rx-319172sleep322:17:363
29805050,0irq/28-eth0-rx-26561-21aten_r1power_cu22:35:493
29805050,0irq/28-eth0-rx-20994-21ssh00:42:023
29805050,0irq/28-eth0-rx-11904-21kthreadcore00:00:583
29805050,0irq/28-eth0-rx-11534-21ntpq00:35:593
29805050,0irq/28-eth0-rx-0-21swapper/323:20:593
29805050,0irq/28-eth0-rx-0-21swapper/323:14:503
29805050,0irq/28-eth0-rx-0-21swapper/322:48:003
29805050,0irq/28-eth0-rx-0-21swapper/321:57:153
29805050,0irq/28-eth0-rx-0-21swapper/300:12:343
259950,0migration/28670-21fschecks_count20:20:542
259950,0migration/229428-21kthreadcore23:50:542
259950,0migration/226530-21df_abs20:55:502
259950,0migration/223633-21aten2.4-expect23:30:492
259950,0migration/217334-21sh00:02:032
259950,0migration/212267-21fschecks_time20:00:512
249950,0watchdog/25644-21if_eth020:40:532
249950,0watchdog/217929-21kthreadcore21:50:582
179950,0migration/19737-21kthreadcore19:35:551
179950,0migration/18717-21kthreadcore23:20:561
179950,0migration/14658-21taskset21:25:421
179950,0migration/14108-21kthreadcore00:50:591
179950,0migration/13846-21kthreadcore23:35:561
179950,0migration/13839-21timerwakeupswit21:21:041
179950,0migration/126040-21kthreadcore00:45:571
179950,0migration/124996-21munin-node20:05:591
179950,0migration/12356-21sh22:40:281
179950,0migration/117513-21munin-node22:45:581
179950,0migration/116088-21unixbench_multi22:26:061
179950,0migration/115643-21cpuspeed_turbos21:10:501
179950,0migration/110530-21munin-node20:40:591
169950,0watchdog/12740-21users22:56:061
8305040,0irq/26-0000:00:0-21swapper/320:05:583
3909943,0cyclictest9236-21sort21:05:522
3909943,0cyclictest3571-21lldpd21:32:252
3909943,0cyclictest3571-21lldpd21:16:242
3909943,0cyclictest3571-21lldpd21:10:542
3909943,0cyclictest3571-21lldpd20:52:232
3909943,0cyclictest3571-21lldpd20:31:232
3909943,0cyclictest3571-21lldpd20:26:232
3909943,0cyclictest3571-21lldpd19:42:222
3909943,0cyclictest3250-21irqbalance22:15:452
3909943,0cyclictest3250-21irqbalance21:55:452
3909943,0cyclictest13223-21awk00:20:572
3859944,0cyclictest0-21swapper/122:53:331
3859944,0cyclictest0-21swapper/100:33:211
3859944,0cyclictest0-21swapper/100:08:551
3859943,0cyclictest8476-21awk00:55:551
3859943,0cyclictest6236-21sadc23:20:391
3859943,0cyclictest4310-21sadc20:40:381
3859943,0cyclictest3571-21lldpd22:20:561
3859943,0cyclictest3524-21snmpd21:19:541
3859943,0cyclictest3524-21snmpd21:09:541
3859943,0cyclictest3524-21snmpd20:50:391
3859943,0cyclictest3524-21snmpd19:54:531
3859943,0cyclictest23520-21awk19:45:551
3859943,0cyclictest19072-21awk22:30:551
3859943,0cyclictest18135-21awk23:45:551
3859943,0cyclictest16221-21awk23:25:541
3859943,0cyclictest15033-21awk00:40:541
3849943,0cyclictest3571-21lldpd23:23:290
3849943,0cyclictest3571-21lldpd23:17:280
3849943,0cyclictest3571-21lldpd23:10:580
3849943,0cyclictest3571-21lldpd22:58:580
3849943,0cyclictest3524-21snmpd23:47:110
3849943,0cyclictest3524-21snmpd23:41:410
3849943,0cyclictest3524-21snmpd23:28:110
3849943,0cyclictest3524-21snmpd21:36:240
3849943,0cyclictest3524-21snmpd20:26:380
3849943,0cyclictest32215-21awk00:50:560
3849943,0cyclictest27600-21awk22:35:530
3849943,0cyclictest19882-21awk20:05:530
3849943,0cyclictest1838-21awk19:31:010
3849943,0cyclictest16296-21awk19:40:540
3849943,0cyclictest14317-21awk23:05:560
3849943,0cyclictest12397-21awk22:45:530
3849940,0cyclictest0-21swapper/022:15:500
3849940,0cyclictest0-21swapper/022:03:230
3849940,0cyclictest0-21swapper/000:56:300
3849940,0cyclictest0-21swapper/000:16:170
339940,0migration/33896-21taskset19:52:293
339940,0migration/330541-21kthreadcore20:10:563
339940,0migration/32948-21kthreadcore21:00:563
339940,0migration/32854-21kthreadcore20:35:573
339940,0migration/318604-21turbostat20:05:383
329940,0watchdog/3298050irq/28-eth0-rx-00:55:463
329940,0watchdog/322183-21irqrtprio00:25:583
329940,0watchdog/30-21swapper/321:40:503
329940,0watchdog/30-21swapper/319:40:533
29815040,0irq/29-eth0-tx-4594-21ssh23:00:412
29815040,0irq/29-eth0-tx-20694-21munin-node00:26:022
29815040,0irq/29-eth0-tx-18850-21munin-node00:05:522
29815040,0irq/29-eth0-tx-13930-21ssh00:40:442
29815040,0irq/29-eth0-tx-11688-21diskmemload00:57:402
29815040,0irq/29-eth0-tx-0-21swapper/223:27:262
29815040,0irq/29-eth0-tx-0-21swapper/222:50:492
29815040,0irq/29-eth0-tx-0-21swapper/222:35:452
29815040,0irq/29-eth0-tx-0-21swapper/222:20:522
29815040,0irq/29-eth0-tx-0-21swapper/221:40:522
29815040,0irq/29-eth0-tx-0-21swapper/020:50:570
29815040,0irq/29-eth0-tx-0-21swapper/020:20:590
29815040,0irq/29-eth0-tx-0-21swapper/020:15:540
29815040,0irq/29-eth0-tx-0-21swapper/020:00:500
29805040,0irq/28-eth0-rx-0-21swapper/321:47:293
29805040,0irq/28-eth0-rx-0-21swapper/320:30:573
259940,0migration/28610-21kthreadcore21:25:562
259940,0migration/28091-21aten_r1power_po19:35:502
259940,0migration/27983-21latency_hist20:20:382
259940,0migration/2456-21runrttasks20:15:022
259940,0migration/23840-21kthreadcore23:55:562
259940,0migration/228813-21sh23:12:082
259940,0migration/228429-21taskset19:46:002
259940,0migration/22465-21kernelversion21:00:562
259940,0migration/21949-21kthreadcore21:20:572
259940,0migration/213408-21kthreadcore22:45:552
249940,0watchdog/20-21swapper/220:35:572
249940,0watchdog/20-21swapper/200:50:542
179940,0migration/19822-21kthreadcore21:45:571
179940,0migration/17853-21kthreadcore00:15:581
179940,0migration/17706-21aten_r1power_en22:05:471
179940,0migration/17564-21kthreadcore19:55:561
179940,0migration/16324-21kthreadcore19:31:031
179940,0migration/15138-21kthreadcore20:15:541
179940,0migration/14245-21kthreadcore21:00:561
179940,0migration/132447-21idleruntime22:00:541
179940,0migration/127488-21irqrtprio20:10:551
179940,0migration/126443-21munin-node23:50:511
179940,0migration/124932-21kthreadcore20:30:571
179940,0migration/123025-21irqcore23:10:561
179940,0migration/120990-21fschecks_count21:35:521
169940,0watchdog/125579-21fschecks_time22:15:541
169940,0watchdog/116125-21hwlatdetect19:40:531
169940,0watchdog/112139-21ssh00:36:061
169940,0watchdog/10-21swapper/100:10:501
4130,0ktimersoftd/00-21swapper/021:23:490
3909930,0cyclictest30425-21perl19:50:502
3909930,0cyclictest23828-21kthreadcore20:05:562
3909930,0cyclictest1456-21perl19:30:592
3859932,0cyclictest3524-21snmpd20:00:531
3859932,0cyclictest2831-21awk23:55:541
3859932,0cyclictest27192-21awk20:55:531
3859932,0cyclictest24005-21awk21:55:551
3859932,0cyclictest16391-21awk20:25:541
3859932,0cyclictest11688-21diskmemload23:32:111
3859931,0cyclictest13094-21kthreadcore20:21:011
3849933,0cyclictest20882-21kworker/0:200:41:520
3849933,0cyclictest15181-21kworker/0:022:21:160
3849933,0cyclictest12584-21kworker/0:121:05:540
3849933,0cyclictest0-21swapper/000:46:150
3849932,0cyclictest9631-21kthreadcore20:40:570
3849932,0cyclictest8340-21grep22:05:500
3849932,0cyclictest6491-21cut23:00:540
3849932,0cyclictest3571-21lldpd21:25:550
3849932,0cyclictest3524-21snmpd23:36:260
3849932,0cyclictest3524-21snmpd21:45:390
3849932,0cyclictest3524-21snmpd21:00:240
3849932,0cyclictest3524-21snmpd20:47:240
3849932,0cyclictest3524-21snmpd20:30:380
3849932,0cyclictest3524-21snmpd19:49:230
3849932,0cyclictest29187-21sensors21:56:020
3849932,0cyclictest23910-21kthreadcore00:25:590
3849932,0cyclictest19859-21ssh22:50:430
3849932,0cyclictest18192-21sensors21:31:010
3849932,0cyclictest18060-21aten_r1power_en22:30:510
3849932,0cyclictest17274-21awk22:10:550
3849932,0cyclictest15298-21if_eth021:50:550
3849932,0cyclictest12611-21munin-node00:20:550
3849932,0cyclictest10589-21grep00:00:530
3849932,0cyclictest0-21swapper/021:00:530
3849932,0cyclictest0-21swapper/020:39:520
3849931,0cyclictest27686-21kthreadcore23:50:530
3849930,0cyclictest6135-21perl00:35:520
3849930,0cyclictest3611-21perl22:40:520
3849930,0cyclictest0-21swapper/023:32:280
329930,0watchdog/30-21swapper/321:12:263
329930,0watchdog/30-21swapper/320:15:493
29815030,0irq/29-eth0-tx-0-21swapper/021:10:490
29815030,0irq/29-eth0-tx-0-21swapper/019:50:490
29805030,0irq/28-eth0-rx-0-21swapper/320:50:523
29805030,0irq/28-eth0-rx-0-21swapper/319:35:503
29805030,0irq/28-eth0-rx-0-21swapper/319:30:483
259930,0migration/27888-21kthreadcore19:55:562
249930,0watchdog/212722-21smartctl20:45:532
169930,0watchdog/16314-21runrttasks21:40:501
169930,0watchdog/118403-21ps20:47:211
169930,0watchdog/10-21swapper/121:50:581
169930,0watchdog/10-21swapper/121:31:501
169930,0watchdog/10-21swapper/100:21:061
14207230,0sleep114351-21if_eth123:05:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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