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2026-06-06 - 09:12
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Sat Jun 06, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2922624938,0sleep10-21swapper/119:20:401
2939023627,0sleep30-21swapper/319:22:343
2948723425,0sleep20-21swapper/219:23:412
2938223329,0sleep00-21swapper/019:22:270
296339976,0cyclictest0-21swapper/219:44:562
35160,0ktimersoftd/30-21swapper/322:49:563
339960,0migration/3994-21sh22:33:033
339960,0migration/35137-21sh21:58:203
339960,0migration/331062-21sh22:13:013
339960,0migration/328892-21sh21:53:333
339960,0migration/313334-21sh23:15:203
329960,0watchdog/317888-21ssh23:55:103
29815060,0irq/29-eth0-tx-25312-21ntp_states22:44:522
29815060,0irq/29-eth0-tx-0-21swapper/021:24:420
29805060,0irq/28-eth0-rx-877-21grep00:44:433
29805060,0irq/28-eth0-rx-26388-21ssh22:46:183
29805060,0irq/28-eth0-rx-2359-21cat00:04:563
29805060,0irq/28-eth0-rx-2326-21iostat_ios19:49:463
296339966,0cyclictest0-21swapper/220:29:522
296339960,0cyclictest0-21swapper/220:44:412
27160,0ktimersoftd/20-21swapper/222:49:562
19160,0ktimersoftd/10-21swapper/123:08:071
149960,0migration/0987-21latency_hist19:49:300
149960,0migration/0923-21sh23:46:290
149960,0migration/018223-21fschecks_time23:39:440
8305050,0irq/26-0000:00:8574-21perf23:39:252
35150,0ktimersoftd/30-21swapper/323:51:593
339950,0migration/38812-21taskset23:34:373
339950,0migration/38319-21kthreadcore21:59:493
339950,0migration/35013-21taskset23:11:203
339950,0migration/332462-21kthreadcore00:24:483
339950,0migration/331093-21kthreadcore20:29:483
339950,0migration/33040-21latency_hist21:39:313
339950,0migration/326151-21timerandwakeup23:59:553
339950,0migration/326104-21kthreadcore00:39:493
339950,0migration/321961-21timerwakeupswit19:59:553
339950,0migration/319627-21aten2.4-expect21:09:433
339950,0migration/319444-21cpuspeed_turbos19:39:433
339950,0migration/317972-21munin-node22:24:453
339950,0migration/31728-21fschecks_count20:34:433
339950,0migration/316173-21kthreadcore22:39:493
339950,0migration/315652-21aten_r1power_en00:34:413
339950,0migration/315580-21ksmtuned23:19:433
339950,0migration/314555-21sendmail_mailtr22:19:533
339950,0migration/313783-21gltestperf22:59:443
339950,0migration/312440-21cpuspeed_turbos21:44:433
339950,0migration/311481-21kthreadcore21:24:483
339950,0migration/310084-21kthreadcore19:29:483
329950,0watchdog/318143-21python19:34:533
329950,0watchdog/317694-21aten_r1power_cu21:29:423
29815050,0irq/29-eth0-tx-3309-21ssh00:06:412
29815050,0irq/29-eth0-tx-17481-21munin-node23:39:462
29815050,0irq/29-eth0-tx-12143-21munin-node21:44:432
29815050,0irq/29-eth0-tx-1077-21tr23:09:482
29815050,0irq/29-eth0-tx-0-21swapper/223:50:512
29815050,0irq/29-eth0-tx-0-21swapper/223:47:562
29815050,0irq/29-eth0-tx-0-21swapper/223:22:332
29815050,0irq/29-eth0-tx-0-21swapper/223:17:132
29815050,0irq/29-eth0-tx-0-21swapper/222:34:322
29815050,0irq/29-eth0-tx-0-21swapper/221:54:442
29815050,0irq/29-eth0-tx-0-21swapper/020:43:390
29815050,0irq/29-eth0-tx-0-21swapper/020:24:440
29805050,0irq/28-eth0-rx-3717-21kthreadcore23:29:503
29805050,0irq/28-eth0-rx-3616-21ls20:54:493
29805050,0irq/28-eth0-rx-30742-21perl19:24:443
29805050,0irq/28-eth0-rx-27953-21iostat21:34:483
29805050,0irq/28-eth0-rx-18394-21perl23:39:443
29805050,0irq/28-eth0-rx-1600-21ssh23:48:213
29805050,0irq/28-eth0-rx-14634-21munin-node20:39:503
29805050,0irq/28-eth0-rx-14391-21cut00:49:493
29805050,0irq/28-eth0-rx-0-21swapper/323:08:233
29805050,0irq/28-eth0-rx-0-21swapper/322:34:423
29805050,0irq/28-eth0-rx-0-21swapper/300:31:293
29805050,0irq/28-eth0-rx-0-21swapper/300:24:113
296339954,0cyclictest5761-21grep20:14:452
296339950,0cyclictest0-21swapper/223:04:412
296339950,0cyclictest0-21swapper/200:53:472
296339950,0cyclictest0-21swapper/200:40:422
296329955,0cyclictest12085-21smartctl23:54:441
296329955,0cyclictest0-21swapper/122:00:451
296329955,0cyclictest0-21swapper/121:34:531
296329955,0cyclictest0-21swapper/100:47:231
296329955,0cyclictest0-21swapper/100:34:181
296329955,0cyclictest0-21swapper/100:18:231
296329950,0cyclictest0-21swapper/123:03:301
296319955,0cyclictest0-21swapper/023:59:440
296319955,0cyclictest0-21swapper/000:39:280
296319950,0cyclictest0-21swapper/000:43:240
259950,0migration/26836-21kthreadcore20:34:482
259950,0migration/26699-21fschecks_time21:59:452
259950,0migration/26613-21latency00:44:502
259950,0migration/231098-21munin-node00:24:442
259950,0migration/226146-21latency_hist19:44:302
259950,0migration/226039-21sh21:33:412
259950,0migration/220230-21sh00:15:272
259950,0migration/218319-21munin-node21:04:512
259950,0migration/217195-21kthreadcore20:19:492
259950,0migration/211911-21latency_hist21:44:312
259950,0migration/21077-21munin-node23:29:472
19150,0ktimersoftd/10-21swapper/123:51:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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