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2026-08-19 - 01:28
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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 Wed Aug 19, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2927326059,0sleep30-21swapper/319:28:203
2909924031,0sleep20-21swapper/219:26:192
2934023324,0sleep10-21swapper/119:29:061
2932323127,0sleep00-21swapper/019:28:570
35160,0ktimersoftd/30-21swapper/300:30:513
339960,0migration/34401-21sh23:39:543
339960,0migration/330834-21sh22:38:343
339960,0migration/329191-21sh22:19:123
339960,0migration/324727-21sh21:38:103
339960,0migration/317827-21munin-node23:25:543
339960,0migration/317083-21sh21:50:543
29815060,0irq/29-eth0-tx-4592-21munin-node19:35:550
29805060,0irq/28-eth0-rx-24874-21turbostat22:55:343
29805060,0irq/28-eth0-rx-0-21swapper/300:41:533
149960,0migration/028012-21sh23:34:150
8305050,0irq/26-0000:00:24753-21ssh21:38:152
8305050,0irq/26-0000:00:21667-21swap00:06:012
339950,0migration/33693-21munin-node23:20:503
339950,0migration/332676-21cpuspeed_turbos00:15:473
339950,0migration/330423-21diskmemload22:00:513
339950,0migration/327494-21irqcore19:50:523
339950,0migration/325165-21taskset22:55:463
339950,0migration/324323-21taskset00:27:223
339950,0migration/324147-21irqcore20:55:523
339950,0migration/322508-21kthreadcore19:45:493
339950,0migration/319382-21gltestperf23:10:493
339950,0migration/31904-21gltestperf19:55:483
339950,0migration/318335-21kthreadcore20:05:533
339950,0migration/312584-21munin-run22:10:343
339950,0migration/311987-21kthreadcore22:25:543
339950,0migration/311987-21kthreadcore22:25:543
339950,0migration/31130-21munin-node20:40:453
339950,0migration/311218-21switchtime21:05:583
339950,0migration/310248-21kernelversion21:30:523
329950,0watchdog/39125-21sh23:04:133
329950,0watchdog/38474-21kthreadcore19:35:523
329950,0watchdog/34924-21kthreadcore21:25:533
329950,0watchdog/34318-21grep00:35:533
329950,0watchdog/328641-21grep20:35:533
329950,0watchdog/32197-21sh00:51:493
329950,0watchdog/320301-21perl21:55:493
329950,0watchdog/317994-21kthreadcore22:30:533
329950,0watchdog/314086-21cut20:45:533
329950,0watchdog/312633-21perl19:40:483
329950,0watchdog/310195-21kthreadcore22:45:533
329950,0watchdog/30-21swapper/321:15:533
29815050,0irq/29-eth0-tx-7906-21ssh00:19:202
29815050,0irq/29-eth0-tx-6741-21munin-node00:01:002
29815050,0irq/29-eth0-tx-29856-21munin-node20:15:580
29815050,0irq/29-eth0-tx-0-21swapper/222:36:562
29815050,0irq/29-eth0-tx-0-21swapper/222:24:422
29815050,0irq/29-eth0-tx-0-21swapper/201:00:132
29815050,0irq/29-eth0-tx-0-21swapper/200:45:412
29815050,0irq/29-eth0-tx-0-21swapper/200:25:502
29815050,0irq/29-eth0-tx-0-21swapper/021:20:140
29815050,0irq/29-eth0-tx-0-21swapper/020:25:520
29805050,0irq/28-eth0-rx-8571-21ssh00:20:373
29805050,0irq/28-eth0-rx-28570-21kthreadcore21:40:553
29805050,0irq/28-eth0-rx-26841-21kthreadcore00:10:523
29805050,0irq/28-eth0-rx-1101-21unixbench_multi23:15:593
29805050,0irq/28-eth0-rx-0-21swapper/323:51:063
29805050,0irq/28-eth0-rx-0-21swapper/323:47:053
29805050,0irq/28-eth0-rx-0-21swapper/323:43:133
29805050,0irq/28-eth0-rx-0-21swapper/323:07:583
29805050,0irq/28-eth0-rx-0-21swapper/322:20:533
29805050,0irq/28-eth0-rx-0-21swapper/322:12:573
29805050,0irq/28-eth0-rx-0-21swapper/321:47:173
29805050,0irq/28-eth0-rx-0-21swapper/300:57:303
29805050,0irq/28-eth0-rx-0-21swapper/300:45:543
29805050,0irq/28-eth0-rx-0-21swapper/300:00:513
295339955,0cyclictest0-21swapper/219:55:572
295329954,0cyclictest979-21sadc23:00:331
295329950,0cyclictest0-21swapper/122:34:231
295329950,0cyclictest0-21swapper/121:42:401
295329950,0cyclictest0-21swapper/100:06:461
295319955,0cyclictest0-21swapper/000:40:260
295319955,0cyclictest0-21swapper/000:11:070
295319954,0cyclictest9872-21cut00:20:530
295319950,0cyclictest0-21swapper/023:57:050
295319950,0cyclictest0-21swapper/021:37:240
259950,0migration/29150-21fschecks_time20:00:502
259950,0migration/27180-21gltestperf22:25:492
259950,0migration/27180-21gltestperf22:25:492
259950,0migration/26305-21kthreadcore21:45:532
259950,0migration/23684-21munin-node21:00:542
259950,0migration/232397-21kthreadcore22:00:522
259950,0migration/223984-21kthreadcore21:15:532
259950,0migration/223700-21fschecks_time20:55:492
259950,0migration/219281-21switchtime22:10:592
259950,0migration/218334-21latency_hist23:10:342
259950,0migration/211798-21munin-node19:40:452
259950,0migration/210578-21aten_r1power_fr00:40:452
249950,0watchdog/224326-21kthreadcore23:50:532
249950,0watchdog/223969-21kthreadcore22:15:532
249950,0watchdog/217332-21kthreadcore21:10:532
19150,0ktimersoftd/10-21swapper/121:57:581
19150,0ktimersoftd/10-21swapper/100:32:471
179950,0migration/14375-21kthreadcore21:45:521
179950,0migration/13704-21latency_hist00:55:341
179950,0migration/13079-21sh23:36:071
179950,0migration/128271-21cpu22:00:451
179950,0migration/127197-21cpuspeed_turbos23:15:461
179950,0migration/124073-21irqrtprio20:10:511
179950,0migration/119548-21kthreadcore22:50:521
179950,0migration/119018-21munin-node22:10:551
179950,0migration/114708-21munin-node20:01:021
179950,0migration/114268-21kthreadcore00:40:521
149950,0migration/09565-21irqcore20:00:530
149950,0migration/09412-21kthreadcore22:25:530
149950,0migration/09412-21kthreadcore22:25:530
149950,0migration/08330-21kthreadcore20:20:520
149950,0migration/07809-21timerandwakeup23:00:590
149950,0migration/06724-21kthreadcore23:20:540
149950,0migration/06556-21kthreadcore00:55:520
149950,0migration/04651-21idleruntime-cro23:40:340
149950,0migration/032615-21fschecks_time22:40:490
149950,0migration/032198-21sh22:57:040
149950,0migration/028867-21smart_sdb20:10:580
149950,0migration/028825-21fschecks_time22:00:470
149950,0migration/028627-21munin-node23:51:020
149950,0migration/02771-21kthreadcore20:40:510
149950,0migration/023980-21kthreadcore22:15:530
149950,0migration/018902-21sh21:54:290
149950,0migration/01861-21kthreadcore00:15:520
149950,0migration/015387-21aten_r1power_fr00:05:470
149950,0migration/013369-21kthreadcore20:45:520
149950,0migration/012973-21munin-node19:40:510
149950,0migration/01295-21latency_hist21:25:340
149950,0migration/01099-21taskset21:43:200
339940,0migration/34262-21netstat23:55:543
339940,0migration/316432-21if_eth000:05:513
329940,0watchdog/324485-21kthreadcore23:30:533
329940,0watchdog/318341-21timerwakeupswit20:26:043
329940,0watchdog/30-21swapper/322:41:133
329940,0watchdog/30-21swapper/321:20:533
329940,0watchdog/30-21swapper/320:20:523
329940,0watchdog/30-21swapper/320:10:523
29815040,0irq/29-eth0-tx-25897-21munin-node21:40:512
29815040,0irq/29-eth0-tx-14856-21ssh22:46:172
29815040,0irq/29-eth0-tx-1235-21ssh23:00:422
29815040,0irq/29-eth0-tx-0-21swapper/223:55:382
29815040,0irq/29-eth0-tx-0-21swapper/223:46:072
29815040,0irq/29-eth0-tx-0-21swapper/223:40:492
29815040,0irq/29-eth0-tx-0-21swapper/223:36:482
29815040,0irq/29-eth0-tx-0-21swapper/223:25:482
29815040,0irq/29-eth0-tx-0-21swapper/223:22:032
29815040,0irq/29-eth0-tx-0-21swapper/223:15:422
29815040,0irq/29-eth0-tx-0-21swapper/223:05:482
29815040,0irq/29-eth0-tx-0-21swapper/222:50:462
29815040,0irq/29-eth0-tx-0-21swapper/222:06:472
29815040,0irq/29-eth0-tx-0-21swapper/221:56:372
29815040,0irq/29-eth0-tx-0-21swapper/200:30:402
29815040,0irq/29-eth0-tx-0-21swapper/020:50:480
29815040,0irq/29-eth0-tx-0-21swapper/020:30:480
29805040,0irq/28-eth0-rx-0-21swapper/321:10:523
29805040,0irq/28-eth0-rx-0-21swapper/321:00:493
29805040,0irq/28-eth0-rx-0-21swapper/320:15:543
295339943,0cyclictest3524-21snmpd20:37:062
295339943,0cyclictest3524-21snmpd20:18:062
295339943,0cyclictest3524-21snmpd19:51:512
295339943,0cyclictest3524-21snmpd00:20:382
295339943,0cyclictest28801-21awk00:50:502
295329944,0cyclictest0-21swapper/123:59:221
295329944,0cyclictest0-21swapper/123:47:511
295329944,0cyclictest0-21swapper/122:26:401
295329944,0cyclictest0-21swapper/122:26:401
295329943,0cyclictest3571-21lldpd23:05:391
295329943,0cyclictest3571-21lldpd22:40:091
295329943,0cyclictest3571-21lldpd20:36:071
295329943,0cyclictest3571-21lldpd20:33:371
295329943,0cyclictest3571-21lldpd20:09:061
295329943,0cyclictest3571-21lldpd00:19:391
295329943,0cyclictest3524-21snmpd00:50:391
295329943,0cyclictest25601-21sadc21:40:341
295329943,0cyclictest24886-21awk00:10:501
295329943,0cyclictest12063-21awk21:50:501
295319944,0cyclictest0-21swapper/023:13:250
295319944,0cyclictest0-21swapper/000:02:270
295319943,0cyclictest9753-21awk21:30:500
295319943,0cyclictest3571-21lldpd22:47:090
295319943,0cyclictest3250-21irqbalance23:46:110
295319943,0cyclictest3250-21irqbalance23:41:510
295319943,0cyclictest3250-21irqbalance23:25:400
295319943,0cyclictest3250-21irqbalance23:16:100
295319943,0cyclictest3250-21irqbalance22:21:400
295319943,0cyclictest3250-21irqbalance22:11:200
295319943,0cyclictest3250-21irqbalance22:06:200
295319943,0cyclictest3250-21irqbalance21:55:400
295319943,0cyclictest3250-21irqbalance21:46:200
295319943,0cyclictest3250-21irqbalance00:52:410
295319943,0cyclictest3250-21irqbalance00:40:410
295319943,0cyclictest23917-21awk20:55:500
295319943,0cyclictest17754-21awk22:50:500
259940,0migration/27438-21sendmail_mailst20:40:552
259940,0migration/25207-21kthreadcore00:35:542
259940,0migration/232149-21kthreadcore19:30:522
259940,0migration/225939-21runrttasks20:33:372
259940,0migration/225195-21irqcore00:10:512
259940,0migration/224154-21kthreadcore23:30:532
259940,0migration/223909-21irqcore20:10:512
259940,0migration/22313-21kthreadcore22:40:532
259940,0migration/220337-21kthreadcore22:30:542
259940,0migration/216366-21gltestperf20:05:492
259940,0migration/216280-21kthreadcore21:50:532
249940,0watchdog/20-21swapper/222:55:492
249940,0watchdog/20-21swapper/221:30:532
249940,0watchdog/20-21swapper/221:25:532
249940,0watchdog/20-21swapper/220:20:482
179940,0migration/18737-21aten_r1power_po00:20:481
179940,0migration/16089-21if_eth1.223:40:481
179940,0migration/15895-21sh21:05:471
179940,0migration/14959-21kthreadcore23:20:541
179940,0migration/13953-21kthreadcore21:25:521
179940,0migration/13351-21kthreadcore19:55:511
179940,0migration/127799-21kthreadcore19:50:521
179940,0migration/12771-21irqrtprio23:00:511
179940,0migration/123889-21kthreadcore19:45:491
179940,0migration/123064-21kthreadcore22:15:531
179940,0migration/118977-21taskset23:27:441
179940,0migration/116944-21kthreadcore19:40:531
179940,0migration/112049-21kthreadcore21:30:521
169940,0watchdog/18780-21perl22:45:491
169940,0watchdog/18632-21kthreadcore20:20:521
169940,0watchdog/18422-21diskmemload00:36:011
169940,0watchdog/16788-21aten_r1power_en00:00:451
169940,0watchdog/132732-21sensors_fan21:20:571
169940,0watchdog/130913-21perl21:00:491
169940,0watchdog/130817-21perl22:20:491
169940,0watchdog/125180-21ssh00:29:531
169940,0watchdog/123555-21perl20:55:491
169940,0watchdog/119892-21fschecks_time00:45:491
169940,0watchdog/11870-21kthreadcore19:30:521
169940,0watchdog/118340-21timerwakeupswit20:26:041
169940,0watchdog/10-21swapper/123:50:531
169940,0watchdog/10-21swapper/123:30:531
169940,0watchdog/10-21swapper/121:10:531
169940,0watchdog/10-21swapper/120:45:531
169940,0watchdog/10-21swapper/119:35:521
149940,0migration/030452-21kthreadcore00:30:550
149940,0migration/02995-21kthreadcore21:00:530
149940,0migration/028537-21kthreadcore22:35:530
149940,0migration/027964-21kthreadcore20:35:520
149940,0migration/026602-21sh21:20:460
149940,0migration/015998-21irqcore22:30:520
149940,0migration/01493-21kthreadcore19:30:520
149940,0migration/012872-21fschecks_time21:10:480
329930,0watchdog/31871-21kthreadcore19:30:523
329930,0watchdog/30-21swapper/320:50:533
329930,0watchdog/30-21swapper/320:01:523
29815030,0irq/29-eth0-tx-0-21swapper/019:50:470
29805030,0irq/28-eth0-rx-0-21swapper/320:30:473
295339932,0cyclictest6002-21ps19:35:512
295339932,0cyclictest3524-21snmpd21:08:522
295339932,0cyclictest19223-21tr19:45:442
295339932,0cyclictest18170-21sensors20:26:022
295339930,0cyclictest27271-21perl21:20:482
295329932,0cyclictest3571-21lldpd20:50:371
295329932,0cyclictest3571-21lldpd20:40:371
295329930,0cyclictest5529-21iostat_ios22:05:531
295329930,0cyclictest0-21swapper/120:16:351
295319933,0cyclictest32552-21kworker/0:121:05:350
295319933,0cyclictest32372-21kworker/0:020:05:390
295319933,0cyclictest32372-21kworker/0:019:55:390
295319933,0cyclictest32372-21kworker/0:019:45:430
295319933,0cyclictest17594-21kworker/0:200:45:460
295319933,0cyclictest17594-21kworker/0:200:25:440
295319932,0cyclictest3524-21snmpd23:05:340
249930,0watchdog/20-21swapper/220:50:532
169930,0watchdog/10-21swapper/123:10:531
169930,0watchdog/10-21swapper/122:41:131
169930,0watchdog/10-21swapper/121:15:531
249920,0watchdog/20-21swapper/220:45:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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