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2026-08-16 - 05:27
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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 792 highest latencies:
System rack1slot2.osadl.org (updated Sun Aug 16, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
625223727,0sleep30-21swapper/319:26:543
645423626,0sleep20-21swapper/219:29:092
615823228,0sleep10-21swapper/119:25:481
622822925,0sleep00-21swapper/019:26:350
8305070,0irq/26-0000:00:6734-21crond20:15:193
29805070,0irq/28-eth0-rx-29597-21munin-node23:30:353
66259965,0cyclictest0-21swapper/200:00:352
339960,0migration/36872-21sh23:53:553
339960,0migration/325535-21sh22:50:103
339960,0migration/323529-21sh00:02:403
339960,0migration/320210-21sh21:50:253
339960,0migration/319914-21sh21:50:133
339960,0migration/318670-21sh23:04:373
339960,0migration/317650-21latency_hist20:45:193
339960,0migration/315651-21sh22:41:173
339960,0migration/310019-21sh21:41:403
329960,0watchdog/332199-21python22:50:423
329960,0watchdog/314289-21kthreadcore19:55:383
329960,0watchdog/312522-21munin-node23:20:343
29805060,0irq/28-eth0-rx-3298-21grep22:55:383
29805060,0irq/28-eth0-rx-26222-21iostat20:50:363
149960,0migration/06438-21kthreadcore00:50:390
66259955,0cyclictest0-21swapper/220:00:382
66249955,0cyclictest0-21swapper/123:40:111
66249955,0cyclictest0-21swapper/123:33:151
66249955,0cyclictest0-21swapper/123:00:271
66249955,0cyclictest0-21swapper/122:44:041
66249955,0cyclictest0-21swapper/122:22:461
66249955,0cyclictest0-21swapper/122:04:391
66249955,0cyclictest0-21swapper/122:04:391
66249950,0cyclictest0-21swapper/121:57:521
66249950,0cyclictest0-21swapper/100:30:481
66249950,0cyclictest0-21swapper/100:00:121
66239955,0cyclictest0-21swapper/019:45:370
66239950,0cyclictest0-21swapper/022:12:050
4150,0ktimersoftd/00-21swapper/022:51:110
4150,0ktimersoftd/00-21swapper/000:07:100
339950,0migration/37706-21kthreadcore21:20:383
339950,0migration/34372-21gltestperf20:35:333
339950,0migration/34358-21taskset00:50:053
339950,0migration/33107-21taskset20:34:593
339950,0migration/328432-21latency_hist20:30:193
339950,0migration/327644-21kthreadcore20:05:373
339950,0migration/327445-21kthreadcore22:30:383
339950,0migration/326493-21munin-node21:35:303
339950,0migration/325904-21mdstat00:40:403
339950,0migration/320943-21latency_hist23:25:193
339950,0migration/319034-21kthreadcore21:05:393
339950,0migration/317849-21kthreadcore20:20:383
339950,0migration/317239-21kthreadcore00:55:383
339950,0migration/31718-21fschecks_time00:10:343
339950,0migration/316425-21taskset22:25:333
339950,0migration/313104-21sh23:37:323
339950,0migration/311280-21kthreadcore00:15:373
329950,0watchdog/318884-21grep19:35:383
29815050,0irq/29-eth0-tx-8071-21memory22:55:402
29815050,0irq/29-eth0-tx-32195-21tr00:25:412
29815050,0irq/29-eth0-tx-30674-21munin-node22:15:352
29815050,0irq/29-eth0-tx-26491-21munin-node21:35:302
29815050,0irq/29-eth0-tx-25027-21munin-node20:50:450
29815050,0irq/29-eth0-tx-23943-21munin-node22:30:442
29815050,0irq/29-eth0-tx-22906-21munin-node23:45:372
29815050,0irq/29-eth0-tx-22424-21ssh22:26:412
29815050,0irq/29-eth0-tx-20403-21cpu21:50:312
29815050,0irq/29-eth0-tx-14341-21munin-node23:40:402
29815050,0irq/29-eth0-tx-13127-21port_sshpriv22:20:442
29815050,0irq/29-eth0-tx-12118-21ssh22:01:522
29815050,0irq/29-eth0-tx-12118-21ssh22:01:522
29815050,0irq/29-eth0-tx-11430-21munin-node00:35:362
29815050,0irq/29-eth0-tx-0-21swapper/200:40:202
29815050,0irq/29-eth0-tx-0-21swapper/021:30:380
29815050,0irq/29-eth0-tx-0-21swapper/021:25:340
29815050,0irq/29-eth0-tx-0-21swapper/019:40:300
29815050,0irq/29-eth0-tx-0-21swapper/019:40:090
29805050,0irq/28-eth0-rx-9604-21ssh00:30:503
29805050,0irq/28-eth0-rx-5241-21irqcore23:15:393
29805050,0irq/28-eth0-rx-25953-21kthreadcore19:40:373
29805050,0irq/28-eth0-rx-23730-21munin-node20:00:403
29805050,0irq/28-eth0-rx-0-21swapper/323:45:243
29805050,0irq/28-eth0-rx-0-21swapper/322:03:413
29805050,0irq/28-eth0-rx-0-21swapper/322:03:413
29805050,0irq/28-eth0-rx-0-21swapper/300:35:293
29805050,0irq/28-eth0-rx-0-21swapper/300:25:413
29805050,0irq/28-eth0-rx-0-21swapper/300:20:393
29805050,0irq/28-eth0-rx-0-21swapper/300:09:283
259950,0migration/28243-21kthreadcore00:30:412
259950,0migration/26325-21kernelversion00:50:392
259950,0migration/231062-21kthreadcore22:50:382
259950,0migration/228557-21sh19:45:302
259950,0migration/219640-21needreboot22:05:382
259950,0migration/210701-21aten2.4-expect23:00:312
249950,0watchdog/27821-21perl20:15:342
249950,0watchdog/220117-21grep23:05:342
249950,0watchdog/210489-21hdparm00:15:352
19150,0ktimersoftd/10-21swapper/120:30:501
169950,0watchdog/120118-21grep23:05:341
149950,0migration/09889-21runrttasks19:50:560
149950,0migration/09739-21kthreadcore23:15:410
149950,0migration/08689-21kthreadcore22:20:400
149950,0migration/08490-21kthreadcore21:40:390
149950,0migration/07891-21cpuspeed_turbos23:55:330
149950,0migration/07018-21latency_hist21:00:190
149950,0migration/032746-21munin-node21:35:400
149950,0migration/032416-21kthreadcore00:25:410
149950,0migration/032152-21fschecks_time23:50:350
149950,0migration/029903-21kthreadcore20:05:380
149950,0migration/02943-21taskset20:33:050
149950,0migration/023353-21kthreadcore00:40:390
149950,0migration/021430-21if_eth1.321:50:350
149950,0migration/02092-21aten_r1power_fr22:55:320
149950,0migration/020889-21taskset00:58:230
149950,0migration/020805-21kthreadcore22:45:370
149950,0migration/018576-21kthreadcore22:25:370
149950,0migration/01813-21taskset00:10:350
149950,0migration/015597-21irqcore23:40:370
149950,0migration/015436-21irqcore20:20:370
149950,0migration/015334-21kthreadcore22:05:360
149950,0migration/013711-21kthreadcore21:45:360
149950,0migration/013023-21pmu-power20:15:410
149950,0migration/012826-21cpuspeed_turbos23:20:290
149950,0migration/011856-21kthreadcore00:15:380
66259944,0cyclictest305350irq/27-eth121:20:302
66259944,0cyclictest305350irq/27-eth119:34:122
66259943,0cyclictest8162-21awk21:00:332
66259943,0cyclictest3571-21lldpd20:30:382
66259943,0cyclictest3524-21snmpd20:05:482
66259943,0cyclictest3524-21snmpd19:55:322
66259943,0cyclictest29878-21awk21:15:342
66259943,0cyclictest26179-21awk20:50:352
66259940,0cyclictest0-21swapper/223:31:592
66249944,0cyclictest0-21swapper/121:44:181
66249943,0cyclictest917-21awk20:55:361
66249943,0cyclictest5129-21awk23:15:391
66249943,0cyclictest3571-21lldpd22:52:101
66249943,0cyclictest3524-21snmpd23:12:211
66249943,0cyclictest3524-21snmpd23:00:061
66249943,0cyclictest3524-21snmpd21:51:051
66249943,0cyclictest3524-21snmpd21:27:191
66249943,0cyclictest3524-21snmpd21:16:191
66249943,0cyclictest3524-21snmpd21:13:341
66249943,0cyclictest3524-21snmpd21:08:041
66249943,0cyclictest3524-21snmpd20:39:481
66249943,0cyclictest3524-21snmpd20:16:031
66249943,0cyclictest3524-21snmpd20:06:481
66249943,0cyclictest3524-21snmpd20:03:331
66249943,0cyclictest3524-21snmpd19:49:021
66249943,0cyclictest3524-21snmpd19:36:021
66249943,0cyclictest3524-21snmpd00:37:371
66249943,0cyclictest29597-21awk00:45:341
66249943,0cyclictest24798-21sadc20:50:191
66249943,0cyclictest21542-21sort23:25:341
66249943,0cyclictest18467-21awk22:45:351
66249943,0cyclictest14458-21awk00:55:361
66239944,0cyclictest0-21swapper/023:48:240
66239944,0cyclictest0-21swapper/023:11:590
66239944,0cyclictest0-21swapper/022:34:000
66239943,0cyclictest8469-21sadc22:40:190
66239943,0cyclictest3571-21lldpd22:15:400
66239943,0cyclictest3571-21lldpd20:00:090
66239943,0cyclictest3524-21snmpd22:45:050
66239943,0cyclictest3524-21snmpd00:34:070
66239943,0cyclictest29830-21awk21:15:330
66239943,0cyclictest29647-21awk00:45:340
66239943,0cyclictest15509-21awk21:05:370
339940,0migration/3548-21kthreadcore21:15:363
339940,0migration/326095-21kthreadcore22:10:373
339940,0migration/318952-21kthreadcore22:05:373
329940,0watchdog/37700-21fschecks_time19:30:343
329940,0watchdog/321884-21kthreadcore21:30:383
329940,0watchdog/310291-21cat20:15:383
29815040,0irq/29-eth0-tx-8758-21munin-node22:40:442
29815040,0irq/29-eth0-tx-0-21swapper/223:35:292
29815040,0irq/29-eth0-tx-0-21swapper/223:15:212
29815040,0irq/29-eth0-tx-0-21swapper/223:10:252
29815040,0irq/29-eth0-tx-0-21swapper/222:35:292
29815040,0irq/29-eth0-tx-0-21swapper/221:57:502
29815040,0irq/29-eth0-tx-0-21swapper/221:45:452
29815040,0irq/29-eth0-tx-0-21swapper/221:40:592
29815040,0irq/29-eth0-tx-0-21swapper/200:45:342
29815040,0irq/29-eth0-tx-0-21swapper/200:20:422
29815040,0irq/29-eth0-tx-0-21swapper/200:10:522
29815040,0irq/29-eth0-tx-0-21swapper/200:07:112
29815040,0irq/29-eth0-tx-0-21swapper/021:20:320
29815040,0irq/29-eth0-tx-0-21swapper/020:35:310
29815040,0irq/29-eth0-tx-0-21swapper/020:10:450
29805040,0irq/28-eth0-rx-0-21swapper/323:55:463
29805040,0irq/28-eth0-rx-0-21swapper/323:40:333
29805040,0irq/28-eth0-rx-0-21swapper/323:11:323
29805040,0irq/28-eth0-rx-0-21swapper/323:05:323
29805040,0irq/28-eth0-rx-0-21swapper/322:35:393
29805040,0irq/28-eth0-rx-0-21swapper/322:21:183
29805040,0irq/28-eth0-rx-0-21swapper/322:16:153
29805040,0irq/28-eth0-rx-0-21swapper/321:55:443
29805040,0irq/28-eth0-rx-0-21swapper/319:45:313
29805040,0irq/28-eth0-rx-0-21swapper/300:50:463
259940,0migration/28846-21kthreadcore20:35:382
259940,0migration/231803-21df_abs23:50:342
259940,0migration/226256-21kthreadcore22:10:372
259940,0migration/221380-21cpuspeed_turbos23:25:332
259940,0migration/221234-21aten_r1power_cu19:40:302
259940,0migration/220471-21kthreadcore20:45:402
259940,0migration/22011-21kthreadcore20:55:382
259940,0migration/215171-21idleruntime20:20:352
259940,0migration/214350-21kthreadcore20:40:352
259940,0migration/214341-21kthreadcore21:25:372
249940,0watchdog/23748-21cut20:10:382
249940,0watchdog/223385-21grep22:45:382
249940,0watchdog/218660-21cut00:55:392
249940,0watchdog/214114-21kthreadcore23:20:342
249940,0watchdog/212785-21cut23:55:382
249940,0watchdog/20-21swapper/221:30:382
179940,0migration/124965-21latency_hist20:50:191
179940,0migration/124922-21kthreadcore20:25:361
179940,0migration/123372-21kthreadcore19:40:361
179940,0migration/123293-21kthreadcore00:40:391
179940,0migration/117808-21kthreadcore23:40:381
179940,0migration/117365-21taskset20:42:461
179940,0migration/117260-21idleruntime00:00:371
179940,0migration/111314-21kthreadcore19:30:381
179940,0migration/111304-21unixbench-2d00:50:471
179940,0migration/11115-21cpuspeed_turbos00:10:331
179940,0migration/110572-21aten_r1power_en19:55:311
179940,0migration/11029-21kthreadcore22:15:371
169940,0watchdog/15274-21proc_pri23:50:421
169940,0watchdog/128137-21kthreadcore23:45:381
169940,0watchdog/119571-21memory22:05:381
169940,0watchdog/113234-21perl23:20:301
169940,0watchdog/11233-21ssh21:36:421
169940,0watchdog/10-21swapper/121:20:381
169940,0watchdog/10-21swapper/120:20:381
169940,0watchdog/10-21swapper/119:50:381
169940,0watchdog/10-21swapper/100:15:351
149940,0migration/05683-21fschecks_time22:00:310
149940,0migration/05683-21fschecks_time22:00:310
149940,0migration/03155-21kthreadcore20:55:380
149940,0migration/023353-21kthreadcore23:05:390
149940,0migration/018022-21sh00:20:290
149940,0migration/013591-21kthreadcore20:40:350
66259933,0cyclictest305350irq/27-eth121:10:282
66259933,0cyclictest305350irq/27-eth121:05:222
66259933,0cyclictest305350irq/27-eth120:25:222
66259933,0cyclictest305350irq/27-eth119:51:122
66259932,0cyclictest3524-21snmpd19:35:322
66249933,0cyclictest0-21swapper/100:29:321
66249933,0cyclictest0-21swapper/100:21:291
66249932,0cyclictest22300-21cut22:10:311
66249931,0cyclictest0-21swapper/120:10:371
66249930,0cyclictest6529-21python22:35:421
66249930,0cyclictest20143-21tr21:30:371
66249930,0cyclictest16310-21perl22:25:321
66239933,0cyclictest18768-21awk20:00:350
66239933,0cyclictest11723-21awk23:00:350
66239932,0cyclictest3524-21snmpd23:30:210
66239932,0cyclictest3524-21snmpd19:30:470
66239932,0cyclictest29955-21awk21:55:370
66239932,0cyclictest27382-21sensors23:25:430
66239932,0cyclictest22419-21awk20:25:340
66239932,0cyclictest18986-21awk20:45:390
66239932,0cyclictest12629-21awk00:35:370
66239931,0cyclictest0-21swapper/021:10:260
66239930,0cyclictest16975-21perl00:00:360
66239930,0cyclictest12503-21munin-node23:35:480
329930,0watchdog/30-21swapper/320:55:383
329930,0watchdog/30-21swapper/319:50:383
29805030,0irq/28-eth0-rx-0-21swapper/321:25:303
29805030,0irq/28-eth0-rx-0-21swapper/321:11:493
29805030,0irq/28-eth0-rx-0-21swapper/320:46:493
179930,0migration/125555-21fschecks_time00:05:331
169930,0watchdog/10-21swapper/122:30:381
169930,0watchdog/10-21swapper/121:45:341
169930,0watchdog/10-21swapper/121:00:261
329920,0watchdog/30-21swapper/321:00:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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