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2026-08-18 - 09:01
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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 Tue Aug 18, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2242625655,0sleep00-21swapper/019:25:470
2795123627,0sleep20-21swapper/219:26:092
2810323331,0sleep30-21swapper/319:27:543
2813323127,0sleep10-21swapper/119:28:171
283889976,0cyclictest12262-21kthreadcore00:40:490
8305060,0irq/26-0000:00:25075-21munin-run20:35:293
35160,0ktimersoftd/30-21swapper/323:18:463
339960,0migration/38838-21sh00:37:523
339960,0migration/321089-21sh22:31:193
339960,0migration/316754-21sh00:40:583
339960,0migration/313856-21sh00:03:353
329960,0watchdog/332082-21grep22:40:443
329960,0watchdog/327087-21cut23:50:483
329960,0watchdog/30-21swapper/300:56:333
29805060,0irq/28-eth0-rx-25778-21iostat_ios22:55:463
29805060,0irq/28-eth0-rx-25533-21cpuspeed_turbos00:30:423
283899960,0cyclictest7373-21diskmemload00:53:061
149960,0migration/0346-21munin-node20:40:430
149960,0migration/024077-21sh22:54:550
149960,0migration/022509-21gltestperf20:10:410
8305050,0irq/26-0000:00:8736-21sshd00:37:352
339950,0migration/38861-21sendmail_mailqu23:20:523
339950,0migration/35147-21kthreadcore19:35:463
339950,0migration/331976-21taskset19:54:093
339950,0migration/329998-21diskmemload23:55:333
339950,0migration/328303-21kthreadcore21:40:483
339950,0migration/327595-21kthreadcore20:35:473
339950,0migration/324283-21kthreadcore20:10:463
339950,0migration/320956-21kthreadcore21:55:493
339950,0migration/320411-21latency20:50:483
339950,0migration/320226-21kthreadcore23:10:473
339950,0migration/318353-21munin-node19:45:433
339950,0migration/318168-21taskset21:54:143
339950,0migration/316991-21fschecks_time21:35:443
339950,0migration/315765-21runrttasks21:35:163
339950,0migration/314509-21irqrtprio23:45:473
329950,0watchdog/38352-21perl22:45:443
329950,0watchdog/38055-21fschecks_time20:45:443
329950,0watchdog/36786-21kthreadcore21:05:483
329950,0watchdog/35646-21ssh22:25:323
329950,0watchdog/34559-21perl20:20:443
329950,0watchdog/330321-21tune2fs22:20:443
329950,0watchdog/329181-21kernelversion22:00:483
329950,0watchdog/328138-21cut00:10:483
329950,0watchdog/325817-21munin-node21:20:443
329950,0watchdog/318869-21cpuspeed_turbos00:45:443
329950,0watchdog/317842-21munin-node00:25:483
329950,0watchdog/31737-21diskstats21:45:443
329950,0watchdog/317312-21swap21:10:563
329950,0watchdog/30-21swapper/323:30:483
29815050,0irq/29-eth0-tx-8942-21ssh23:05:182
29815050,0irq/29-eth0-tx-4385-21munin-node23:40:472
29815050,0irq/29-eth0-tx-30039-21kthreadcore22:00:482
29815050,0irq/29-eth0-tx-27091-21munin-node00:50:512
29815050,0irq/29-eth0-tx-26140-21irqcore21:40:462
29815050,0irq/29-eth0-tx-25306-21munin-node20:35:450
29815050,0irq/29-eth0-tx-24550-21munin-node22:55:452
29815050,0irq/29-eth0-tx-22915-21sh22:35:402
29815050,0irq/29-eth0-tx-19378-21ps22:11:402
29815050,0irq/29-eth0-tx-16146-21munin-node21:35:512
29815050,0irq/29-eth0-tx-16072-21load21:50:472
29815050,0irq/29-eth0-tx-12847-21kthreadcore23:05:482
29815050,0irq/29-eth0-tx-0-21swapper/223:24:502
29815050,0irq/29-eth0-tx-0-21swapper/223:10:482
29815050,0irq/29-eth0-tx-0-21swapper/222:50:422
29815050,0irq/29-eth0-tx-0-21swapper/222:30:402
29815050,0irq/29-eth0-tx-0-21swapper/222:05:532
29815050,0irq/29-eth0-tx-0-21swapper/200:48:252
29815050,0irq/29-eth0-tx-0-21swapper/200:27:002
29815050,0irq/29-eth0-tx-0-21swapper/200:09:332
29815050,0irq/29-eth0-tx-0-21swapper/021:30:310
29815050,0irq/29-eth0-tx-0-21swapper/021:25:300
29815050,0irq/29-eth0-tx-0-21swapper/020:50:450
29805050,0irq/28-eth0-rx-7053-21kthreadcore22:05:483
29805050,0irq/28-eth0-rx-31914-21ssh00:15:403
29805050,0irq/28-eth0-rx-27544-21fschecks_count00:50:433
29805050,0irq/28-eth0-rx-0-21swapper/323:40:483
29805050,0irq/28-eth0-rx-0-21swapper/323:35:483
29805050,0irq/28-eth0-rx-0-21swapper/323:25:463
29805050,0irq/28-eth0-rx-0-21swapper/323:06:293
29805050,0irq/28-eth0-rx-0-21swapper/322:50:483
29805050,0irq/28-eth0-rx-0-21swapper/322:15:523
29805050,0irq/28-eth0-rx-0-21swapper/322:12:213
29805050,0irq/28-eth0-rx-0-21swapper/319:30:413
29805050,0irq/28-eth0-rx-0-21swapper/300:10:183
283909954,0cyclictest32537-21awk22:40:472
283899955,0cyclictest7373-21diskmemload00:35:261
283899955,0cyclictest24890-21sensors00:45:541
283899955,0cyclictest0-21swapper/120:05:411
283899955,0cyclictest0-21swapper/100:39:511
283899955,0cyclictest0-21swapper/100:10:511
283899950,0cyclictest0-21swapper/123:21:301
283899950,0cyclictest0-21swapper/122:19:321
283889950,0cyclictest0-21swapper/023:23:340
283889950,0cyclictest0-21swapper/000:30:250
259950,0migration/29538-21kthreadcore22:25:482
259950,0migration/229951-21kthreadcore00:30:482
259950,0migration/227578-21munin-node23:15:452
259950,0migration/226839-21kthreadcore23:50:482
259950,0migration/225395-21kthreadcore00:10:472
259950,0migration/225212-21kthreadcore22:15:502
259950,0migration/224704-21munin-node21:15:562
259950,0migration/219969-21munin-node21:55:462
259950,0migration/219330-21sendmail_mailqu23:45:522
259950,0migration/217531-21kthreadcore20:05:452
259950,0migration/217406-21kthreadcore20:50:472
259950,0migration/211128-21kthreadcore00:20:462
249950,0watchdog/20-21swapper/220:40:482
19150,0ktimersoftd/10-21swapper/123:57:551
179950,0migration/17832-21fschecks_count20:00:431
179950,0migration/14862-21irqcore19:35:461
179950,0migration/124210-21switchtime23:10:551
179950,0migration/117462-21sh00:43:011
179950,0migration/115698-21switchtime23:05:551
169950,0watchdog/1845-21perl20:40:441
169950,0watchdog/18066-21fschecks_time20:45:441
169950,0watchdog/10-21swapper/120:35:481
149950,0migration/07246-21aten_r1power_en20:00:400
149950,0migration/04901-21fschecks_count23:40:440
149950,0migration/04785-21kthreadcore19:55:470
149950,0migration/031968-21sh21:41:450
149950,0migration/031686-21kthreadcore22:20:480
149950,0migration/030967-21munin-node19:50:470
149950,0migration/030078-21munin-node21:00:450
149950,0migration/029733-21kthreadcore22:55:470
149950,0migration/029653-21fschecks_time20:15:430
149950,0migration/028925-21kthreadcore23:15:470
149950,0migration/028371-21kthreadcore21:20:490
149950,0migration/022387-21kthreadcore23:30:480
149950,0migration/02197-21kthreadcore00:15:480
149950,0migration/021799-21kthreadcore21:55:490
149950,0migration/017316-21kthreadcore22:10:460
149950,0migration/016296-21taskset00:25:050
149950,0migration/012535-21kthreadcore20:45:490
149950,0migration/011473-21kthreadcore23:05:470
149950,0migration/010005-21kthreadcore22:45:480
339940,0migration/330120-21irqcore20:15:473
339940,0migration/311635-21kthreadcore00:20:463
329940,0watchdog/35619-21kthreadcore23:00:483
329940,0watchdog/322861-21aten_r1power_fr22:35:403
329940,0watchdog/311891-21kthreadcore20:00:473
329940,0watchdog/30-21swapper/321:00:523
329940,0watchdog/30-21swapper/320:40:483
29815040,0irq/29-eth0-tx-32171-21grep23:35:452
29815040,0irq/29-eth0-tx-18022-21aten2.4-expect19:45:420
29815040,0irq/29-eth0-tx-0-21swapper/223:55:472
29815040,0irq/29-eth0-tx-0-21swapper/222:20:362
29815040,0irq/29-eth0-tx-0-21swapper/200:40:422
29805040,0irq/28-eth0-rx-0-21swapper/321:15:423
283909943,0cyclictest4750-21awk20:20:452
283909943,0cyclictest3571-21lldpd20:35:472
283909943,0cyclictest3571-21lldpd19:55:472
283909943,0cyclictest3524-21snmpd23:26:112
283909943,0cyclictest3524-21snmpd22:45:402
283909943,0cyclictest3524-21snmpd21:31:092
283909943,0cyclictest3524-21snmpd20:47:092
283909943,0cyclictest3524-21snmpd19:53:532
283909943,0cyclictest3524-21snmpd19:37:222
283909943,0cyclictest29966-21awk20:15:462
283909943,0cyclictest20713-21awk23:30:462
283909943,0cyclictest12031-21awk20:25:442
283909943,0cyclictest11835-21awk19:40:442
283899944,0cyclictest0-21swapper/122:32:381
283899944,0cyclictest0-21swapper/121:45:581
283899943,0cyclictest9276-21awk00:20:441
283899943,0cyclictest8575-21awk22:45:451
283899943,0cyclictest642-21awk00:15:461
283899943,0cyclictest3571-21lldpd19:58:461
283899943,0cyclictest3571-21lldpd19:42:461
283899943,0cyclictest30513-21awk22:20:451
283899943,0cyclictest25702-21awk22:55:451
283899943,0cyclictest22888-21awk20:55:441
283899943,0cyclictest22249-21sort20:10:411
283899943,0cyclictest20778-21awk23:30:461
283899943,0cyclictest19354-21awk21:15:461
283899943,0cyclictest17230-21awk21:35:461
283899943,0cyclictest12006-21awk20:25:441
283889943,0cyclictest7378-21awk00:00:440
283889943,0cyclictest6206-21kworker/0:222:29:320
283889943,0cyclictest4765-21awk20:20:450
283889943,0cyclictest3524-21snmpd23:27:560
283889943,0cyclictest3524-21snmpd20:57:390
283889943,0cyclictest3250-21irqbalance23:45:560
283889943,0cyclictest3250-21irqbalance22:35:550
283889943,0cyclictest3250-21irqbalance22:16:550
283889943,0cyclictest3250-21irqbalance21:37:050
283889943,0cyclictest3250-21irqbalance00:30:360
283889943,0cyclictest31244-21awk23:55:460
283889943,0cyclictest29321-21awk23:35:430
283889943,0cyclictest28762-21awk22:00:460
283889943,0cyclictest19090-21grep23:10:470
283889943,0cyclictest15586-21awk20:05:440
283889943,0cyclictest11318-21awk21:50:440
283889940,0cyclictest0-21swapper/000:35:370
259940,0migration/29503-21kthreadcore21:05:492
259940,0migration/28627-21irqrtprio20:00:462
259940,0migration/23951-21fschecks_count00:55:442
259940,0migration/231854-21timerandwakeup21:20:562
259940,0migration/226926-21kthreadcore20:10:462
259940,0migration/22452-21munin-node21:45:472
259940,0migration/21958-21kthreadcore00:15:482
259940,0migration/21855-21munin-node21:25:482
259940,0migration/218333-21cpuspeed_turbos20:30:432
259940,0migration/211652-21fschecks_count21:10:442
249940,0watchdog/236192sleep221:05:242
249940,0watchdog/231830-21kthreadcore19:30:472
249940,0watchdog/20-21swapper/219:45:432
249940,0watchdog/20-21swapper/200:00:402
179940,0migration/131453-21timerandwakeup19:50:531
179940,0migration/131345-21kthreadcore23:35:451
179940,0migration/131131-21kthreadcore21:00:471
179940,0migration/127822-21munin-node23:50:521
179940,0migration/12770-21kthreadcore23:00:471
179940,0migration/126884-21fschecks_count23:15:421
179940,0migration/116701-21kthreadcore22:10:461
179940,0migration/116692-21kthreadcore20:50:471
179940,0migration/113581-21kthreadcore21:50:461
179940,0migration/113132-21kthreadcore21:10:481
169940,0watchdog/18553-21kthreadcore23:40:481
169940,0watchdog/18502-21perl21:30:401
169940,0watchdog/16350-21sh00:00:401
169940,0watchdog/127059-21ssh21:59:481
169940,0watchdog/120433-21cut20:30:481
169940,0watchdog/11744-21grep22:40:481
169940,0watchdog/114831-21ssh00:05:401
169940,0watchdog/110468-21chrt20:22:561
169940,0watchdog/10-21swapper/122:00:481
169940,0watchdog/10-21swapper/121:40:481
169940,0watchdog/10-21swapper/121:05:481
169940,0watchdog/10-21swapper/120:15:481
169940,0watchdog/10-21swapper/119:45:431
169940,0watchdog/10-21swapper/119:30:471
169940,0watchdog/10-21swapper/100:25:481
149940,0migration/04950-21kthreadcore00:55:470
149940,0migration/04422-21fschecks_count22:05:430
149940,0migration/031575-21kthreadcore19:30:470
149940,0migration/029069-21kthreadcore00:10:490
149940,0migration/023248-21kthreadcore23:50:470
149940,0migration/022283-21kthreadcore20:30:480
149940,0migration/021510-21kthreadcore21:15:480
149940,0migration/018752-21kthreadcore22:30:470
149940,0migration/018618-21kthreadcore00:05:470
149940,0migration/012775-21kthreadcore19:40:450
329930,0watchdog/30-21swapper/320:05:403
29805030,0irq/28-eth0-rx-3463-21kthreadcore19:55:463
29805030,0irq/28-eth0-rx-0-21swapper/321:25:423
29805030,0irq/28-eth0-rx-0-21swapper/320:55:453
29805030,0irq/28-eth0-rx-0-21swapper/320:25:453
29805030,0irq/28-eth0-rx-0-21swapper/319:40:443
283899930,0cyclictest6931-21iostat_ios22:25:461
283899930,0cyclictest3635-21df00:55:431
283899930,0cyclictest16452-21diskstats22:50:431
283899930,0cyclictest11906-21perl23:25:421
283889933,0cyclictest6206-21kworker/0:223:00:400
283889933,0cyclictest6206-21kworker/0:222:40:300
283889933,0cyclictest6206-21kworker/0:221:45:320
283889933,0cyclictest6206-21kworker/0:220:25:320
283889933,0cyclictest24324-21kworker/0:000:50:390
283889933,0cyclictest14206-21kworker/0:219:35:380
283889932,0cyclictest4948-21awk21:05:450
283889931,0cyclictest18504-21date00:45:290
283889930,0cyclictest0-21swapper/021:10:420
249930,0watchdog/20-21swapper/220:55:402
169930,0watchdog/10-21swapper/123:45:441
169930,0watchdog/10-21swapper/122:35:401
169930,0watchdog/10-21swapper/122:08:001
169930,0watchdog/10-21swapper/121:25:441
169930,0watchdog/10-21swapper/121:20:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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