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2026-07-11 - 16:31
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sat Jul 11, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
430925040,0sleep30-21swapper/307:27:153
401824746,0sleep10-21swapper/107:23:491
427824635,0sleep00-21swapper/007:26:520
409323627,0sleep20-21swapper/207:24:422
43989988,0cyclictest3524-21snmpd12:11:001
43989960,0cyclictest0-21swapper/110:37:351
339960,0migration/328995-21kthreadcore11:42:433
339960,0migration/325841-21sh10:46:333
339960,0migration/325380-21sh11:58:423
339960,0migration/323697-21sh10:27:143
339960,0migration/311822-21sh11:12:583
339960,0migration/310797-21munin-node09:42:393
329960,0watchdog/327308-21ssh09:51:393
29815060,0irq/29-eth0-tx-8370-21munin-node07:52:400
29815060,0irq/29-eth0-tx-25894-21if_eth111:42:412
29815060,0irq/29-eth0-tx-19477-21munin-node09:07:490
29805060,0irq/28-eth0-rx-8796-21kthreadcore12:27:443
29805060,0irq/28-eth0-rx-27676-21iostat_ios10:47:423
149960,0migration/025748-21kthreadcore08:47:420
149960,0migration/01418-21latency09:52:440
149960,0migration/013662-21sh10:18:300
8305050,0irq/26-0000:00:5072-21python11:27:502
8305050,0irq/26-0000:00:23799-21perf10:27:252
8305050,0irq/26-0000:00:0-21swapper/307:47:243
43999955,0cyclictest0-21swapper/211:34:512
43999955,0cyclictest0-21swapper/211:24:072
43999955,0cyclictest0-21swapper/209:02:422
43999950,0cyclictest0-21swapper/211:03:562
43999950,0cyclictest0-21swapper/210:38:152
43999950,0cyclictest0-21swapper/209:47:382
43989955,0cyclictest28468-21ssh12:20:421
43989955,0cyclictest0-21swapper/112:47:581
43989955,0cyclictest0-21swapper/111:49:571
43989955,0cyclictest0-21swapper/110:52:241
43989955,0cyclictest0-21swapper/110:45:091
43989950,0cyclictest0-21swapper/112:34:251
43989950,0cyclictest0-21swapper/111:42:321
43989950,0cyclictest0-21swapper/111:20:191
43989950,0cyclictest0-21swapper/111:13:511
43989950,0cyclictest0-21swapper/108:12:231
43989950,0cyclictest0-21swapper/107:32:491
43979950,0cyclictest0-21swapper/012:52:250
339950,0migration/39323-21kthreadcore08:12:433
339950,0migration/38182-21munin-node12:47:383
339950,0migration/37422-21taskset11:47:493
339950,0migration/37307-21munin-node09:37:443
339950,0migration/34833-21kthreadcore10:52:433
339950,0migration/34389-21idleruntime12:07:403
339950,0migration/3423-21kthreadcore10:12:433
339950,0migration/330929-21latency_hist11:27:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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