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2026-06-29 - 04:01
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Mon Jun 29, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1247324233,0sleep10-21swapper/119:22:551
1274024031,0sleep20-21swapper/219:26:052
1275023430,0sleep00-21swapper/019:26:110
1269822925,0sleep30-21swapper/319:25:383
12837991413,0cyclictest9638-21sadc21:16:232
12837991413,0cyclictest9638-21sadc21:16:232
128369970,0cyclictest20104-21cat19:31:231
8305060,0irq/26-0000:00:32724-21sed21:31:232
8305060,0irq/26-0000:00:26753-21vmstat19:31:483
339960,0migration/3843-21sh23:58:303
339960,0migration/35592-21sh22:10:453
339960,0migration/33110-21gltestperf00:01:373
339960,0migration/320828-21sh00:30:113
339960,0migration/312830-21munin-node22:11:493
29815060,0irq/29-eth0-tx-9695-21munin-node20:31:460
29815060,0irq/29-eth0-tx-0-21swapper/200:47:492
29805060,0irq/28-eth0-rx-32732-21cut00:36:413
29805060,0irq/28-eth0-rx-25162-21irqcore23:36:393
29805060,0irq/28-eth0-rx-11985-21grep00:41:423
149960,0migration/022112-21sh23:32:240
149960,0migration/014505-21sh22:16:230
128369960,0cyclictest0-21swapper/123:17:281
128369960,0cyclictest0-21swapper/123:02:101
128369960,0cyclictest0-21swapper/122:02:341
8305050,0irq/26-0000:00:0-21swapper/321:16:233
8305050,0irq/26-0000:00:0-21swapper/321:01:233
8305050,0irq/26-0000:00:0-21swapper/222:06:232
339950,0migration/38072-21sh21:33:493
339950,0migration/37380-21munin-node20:51:403
339950,0migration/3594-21sh21:46:443
339950,0migration/3590-21munin-node22:26:373
339950,0migration/35494-21taskset20:03:403
339950,0migration/328537-21kthreadcore22:41:423
339950,0migration/326850-21kthreadcore22:21:423
339950,0migration/325341-21irqcore20:41:403
339950,0migration/324334-21fschecks_count00:51:393
339950,0migration/322675-21kernelversion22:01:413
339950,0migration/32135-21timerandwakeup00:16:493
339950,0migration/320658-21taskset23:14:403
339950,0migration/31965-21switchtime23:01:483
339950,0migration/316250-21taskset19:48:443
339950,0migration/313604-21kthreadcore22:51:433
339950,0migration/313195-21aten_r1power_vo19:26:343
339950,0migration/312533-21aten2.4-expect21:56:363
339950,0migration/310422-21kthreadcore23:26:423
329950,0watchdog/34229-21python23:21:463
329950,0watchdog/318827-21kthreadcore23:31:423
329950,0watchdog/311409-21ssh21:54:263
329950,0watchdog/30-21swapper/323:16:383
329950,0watchdog/30-21swapper/319:51:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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