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2026-09-20 - 09:30
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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 Sun Sep 20, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
961626059,0sleep30-21swapper/319:32:033
944323728,0sleep10-21swapper/119:30:011
960123322,0sleep00-21swapper/019:31:520
954423324,0sleep20-21swapper/219:31:142
97779965,0cyclictest8106-21cut00:33:301
339960,0migration/317944-21sh22:25:253
339960,0migration/310801-21sh22:38:503
329960,0watchdog/35393-21munin-node20:33:303
29805060,0irq/28-eth0-rx-31248-21perl00:28:273
29805060,0irq/28-eth0-rx-18943-21python22:43:363
29805060,0irq/28-eth0-rx-10454-21perl23:38:263
19160,0ktimersoftd/10-21swapper/100:02:261
149960,0migration/031814-21sh23:29:310
149960,0migration/02778-21kthreadcore21:38:310
149960,0migration/017742-21sh23:42:560
149960,0migration/014841-21kthreadcore23:58:290
149960,0migration/013348-21sh23:00:420
97829955,0cyclictest0-21swapper/221:34:302
97829953,0cyclictest0-21swapper/223:38:252
97829950,0cyclictest0-21swapper/222:15:142
97779955,0cyclictest0-21swapper/122:49:101
97779955,0cyclictest0-21swapper/122:00:371
97779955,0cyclictest0-21swapper/121:54:371
97779955,0cyclictest0-21swapper/121:48:381
97779950,0cyclictest0-21swapper/122:55:381
97779950,0cyclictest0-21swapper/121:37:261
97779950,0cyclictest0-21swapper/100:43:281
97779950,0cyclictest0-21swapper/100:11:471
339950,0migration/39154-21kthreadcore21:43:323
339950,0migration/37694-21idleruntime00:33:283
339950,0migration/37197-21kthreadcore20:58:303
339950,0migration/3592-21munin-node21:18:273
339950,0migration/328456-21aten_r1power_vo20:53:243
339950,0migration/326474-21munin-node22:13:263
339950,0migration/325220-21kthreadcore21:33:303
339950,0migration/323839-21unixbench-2d22:08:363
339950,0migration/320971-21kthreadcore21:08:303
339950,0migration/319013-21kthreadcore19:38:293
339950,0migration/315003-21kthreadcore00:18:303
339950,0migration/314708-21cpuspeed_turbos23:03:243
339950,0migration/31286-21kthreadcore00:08:323
339950,0migration/311015-21kthreadcore22:58:303
339950,0migration/310280-21kthreadcore00:13:303
329950,0watchdog/332424-21cut21:38:303
329950,0watchdog/3295482chrt00:26:313
329950,0watchdog/323382-21ssh21:52:343
329950,0watchdog/318719-21cut23:43:273
329950,0watchdog/30-21swapper/323:24:513
329950,0watchdog/30-21swapper/319:58:303
29815050,0irq/29-eth0-tx-31502-21munin-node23:13:282
29815050,0irq/29-eth0-tx-23875-21sshd19:39:560
29815050,0irq/29-eth0-tx-22986-21munin-node23:08:282
29815050,0irq/29-eth0-tx-22645-21fschecks_time00:23:272
29815050,0irq/29-eth0-tx-21084-21diskmemload00:56:112
29815050,0irq/29-eth0-tx-20067-21kthreadcore23:23:302
29815050,0irq/29-eth0-tx-13579-21tr23:18:312
29815050,0irq/29-eth0-tx-13579-21tr23:18:312
29815050,0irq/29-eth0-tx-0-21swapper/223:48:272
29815050,0irq/29-eth0-tx-0-21swapper/223:33:292
29815050,0irq/29-eth0-tx-0-21swapper/222:53:292
29815050,0irq/29-eth0-tx-0-21swapper/222:43:132
29815050,0irq/29-eth0-tx-0-21swapper/222:38:192
29815050,0irq/29-eth0-tx-0-21swapper/021:33:170
29815050,0irq/29-eth0-tx-0-21swapper/020:48:250
29805050,0irq/28-eth0-rx-3339-21fschecks_count23:53:273
29805050,0irq/28-eth0-rx-319352sleep300:47:493
29805050,0irq/28-eth0-rx-31690-21kthreadcore22:33:333
29805050,0irq/28-eth0-rx-29780-21tr23:48:303
29805050,0irq/28-eth0-rx-27194-21kthreadcore23:28:303
29805050,0irq/28-eth0-rx-21568-21diskstats22:48:243
29805050,0irq/28-eth0-rx-17278-21aten_r1power_vo00:58:263
29805050,0irq/28-eth0-rx-11503-21cut20:18:303
29805050,0irq/28-eth0-rx-0-21swapper/323:13:123
29805050,0irq/28-eth0-rx-0-21swapper/323:08:313
29805050,0irq/28-eth0-rx-0-21swapper/322:00:233
29805050,0irq/28-eth0-rx-0-21swapper/321:58:093
29805050,0irq/28-eth0-rx-0-21swapper/320:48:233
29805050,0irq/28-eth0-rx-0-21swapper/320:23:323
29805050,0irq/28-eth0-rx-0-21swapper/300:40:293
29805050,0irq/28-eth0-rx-0-21swapper/300:04:413
259950,0migration/23941-21smart_sda21:38:362
259950,0migration/222129-21sh23:06:312
259950,0migration/22060-21aten2.4-expect22:18:232
259950,0migration/220026-21aten_r1power_cu00:03:232
259950,0migration/212112-21fschecks_time23:58:252
259950,0migration/211723-21sh00:14:202
259950,0migration/210666-21aten_r1power_en22:23:212
249950,0watchdog/229891-21kthreadcore19:43:302
249950,0watchdog/229654-21kthreadcore00:43:312
249950,0watchdog/224005-21cut22:28:312
249950,0watchdog/218983-21grep21:48:302
249950,0watchdog/212816-21cut22:03:302
179950,0migration/19408-21latency_hist23:38:121
179950,0migration/16766-21kthreadcore20:13:291
179950,0migration/15886-21timerwakeupswit20:33:361
179950,0migration/15288-21taskset00:30:031
179950,0migration/125915-21munin-node22:28:381
179950,0migration/123310-21irqrtprio00:23:311
179950,0migration/120395-21kthreadcore20:23:301
179950,0migration/11900-21timerwakeupswit22:33:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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