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2026-05-01 - 05:31
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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 Fri May 01, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2455424332,0sleep20-21swapper/219:17:482
2459423425,0sleep10-21swapper/119:18:151
2483122928,0sleep00-21swapper/019:20:580
2449122723,0sleep30-21swapper/319:17:013
24948991010,0cyclictest26208-21awk19:21:480
249529976,0cyclictest0-21swapper/222:56:522
8305060,0irq/26-0000:00:22723-21if_eth1.219:41:483
8305060,0irq/26-0000:00:21577-21crond21:11:333
35160,0ktimersoftd/30-21swapper/300:05:043
339960,0migration/35440-21idleruntime-cro00:51:333
339960,0migration/34878-21sh22:35:443
339960,0migration/332756-21munin-node20:11:463
339960,0migration/328991-21aten_r1power_fr20:31:443
339960,0migration/326225-21fschecks_time20:51:453
339960,0migration/313812-21timerwakeupswit21:01:593
339960,0migration/313357-21sh23:54:353
339960,0migration/312051-21sh23:36:363
329960,0watchdog/321740-21fschecks_time00:41:493
29805060,0irq/28-eth0-rx-3915-21sed00:31:463
29805060,0irq/28-eth0-rx-28992-21ssh23:46:243
29805060,0irq/28-eth0-rx-17245-21cut23:56:533
29805060,0irq/28-eth0-rx-17245-21cut23:56:533
29805060,0irq/28-eth0-rx-0-21swapper/323:12:473
249489960,0cyclictest0-21swapper/023:30:510
19160,0ktimersoftd/10-21swapper/100:05:041
149960,0migration/05092-21sh22:36:200
149960,0migration/027284-21sh22:27:050
149960,0migration/023430-21fschecks_time22:46:470
4150,0ktimersoftd/00-21swapper/022:54:260
339950,0migration/38830-21munin-node20:16:493
339950,0migration/38724-21taskset21:59:403
339950,0migration/331967-21fschecks_count22:51:473
339950,0migration/331261-21kthreadcore22:11:513
339950,0migration/330139-21kthreadcore19:21:513
339950,0migration/329399-21kthreadcore21:51:523
339950,0migration/329040-21munin-node22:46:553
339950,0migration/325688-21fschecks_time23:06:483
339950,0migration/32510-21taskset00:29:373
339950,0migration/323721-21kthreadcore21:31:513
339950,0migration/322377-21kthreadcore22:26:523
339950,0migration/321197-21sshd20:23:383
339950,0migration/318574-21aten_r1power_cu23:21:453
339950,0migration/316939-21sh23:17:523
339950,0migration/316886-21fschecks_count23:01:463
339950,0migration/316412-21munin-node21:46:453
339950,0migration/310876-21latency_hist20:41:333
329950,0watchdog/33568-21kthreadcore21:36:523
329950,0watchdog/330036-21irqcore19:46:483
329950,0watchdog/30-21swapper/322:41:523
329950,0watchdog/30-21swapper/321:26:483
329950,0watchdog/30-21swapper/321:16:563
29815050,0irq/29-eth0-tx-9931-21munin-node23:16:582
29815050,0irq/29-eth0-tx-3922-21perl22:16:462
29815050,0irq/29-eth0-tx-26138-21ssh23:24:282
29815050,0irq/29-eth0-tx-20599-21latency_hist23:41:342
29815050,0irq/29-eth0-tx-18320-21crond00:21:342
29815050,0irq/29-eth0-tx-0-21swapper/223:51:112
29815050,0irq/29-eth0-tx-0-21swapper/222:49:122
29815050,0irq/29-eth0-tx-0-21swapper/222:41:272
29815050,0irq/29-eth0-tx-0-21swapper/200:26:522
29815050,0irq/29-eth0-tx-0-21swapper/020:21:560
29805050,0irq/28-eth0-rx-9639-21ssh22:01:353
29805050,0irq/28-eth0-rx-123032sleep322:37:223
29805050,0irq/28-eth0-rx-10856-21ssh23:33:523
29805050,0irq/28-eth0-rx-0-21swapper/323:51:223
29805050,0irq/28-eth0-rx-0-21swapper/322:58:223
29805050,0irq/28-eth0-rx-0-21swapper/322:25:153
29805050,0irq/28-eth0-rx-0-21swapper/321:26:303
29805050,0irq/28-eth0-rx-0-21swapper/300:41:293
29805050,0irq/28-eth0-rx-0-21swapper/300:22:193
27150,0ktimersoftd/20-21swapper/200:05:042
259950,0migration/227547-21fschecks_count22:11:462
259950,0migration/224673-21turbostat23:06:342
259950,0migration/223102-21kthreadcore22:06:522
259950,0migration/21916-21sh23:28:172
259950,0migration/217321-21sh22:04:342
259950,0migration/216972-21sendmail_mailqu19:56:552
259950,0migration/21472-21fschecks_count21:56:462
259950,0migration/213403-21munin-node00:36:532
249529950,0cyclictest0-21swapper/223:52:032
249499950,0cyclictest0-21swapper/122:36:381
249499950,0cyclictest0-21swapper/121:43:211
249499950,0cyclictest0-21swapper/121:33:351
249499950,0cyclictest0-21swapper/100:35:591
249489955,0cyclictest0-21swapper/022:16:450
249489955,0cyclictest0-21swapper/000:36:550
249489950,0cyclictest2920-21munin-run22:16:330
249489950,0cyclictest0-21swapper/023:12:150
249489950,0cyclictest0-21swapper/000:32:490
249950,0watchdog/229484-21aten_r1power_en00:46:452
19150,0ktimersoftd/10-21swapper/100:43:141
179950,0migration/17464-21switchtime21:56:581
179950,0migration/16562-21munin-node19:26:591
179950,0migration/1452-21sh23:10:301
179950,0migration/123026-21kthreadcore23:41:521
179950,0migration/119263-21fschecks_time23:21:471
179950,0migration/119204-21sh22:23:301
179950,0migration/117175-21fschecks_time23:01:461
179950,0migration/114256-21kthreadcore00:36:541
169950,0watchdog/15096-21munin-node21:21:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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