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2026-08-13 - 17:53
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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 Thu Aug 13, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1031124140,0sleep00-21swapper/007:27:330
1028923728,0sleep30-21swapper/307:27:163
1040923026,0sleep10-21swapper/107:28:421
1028823026,0sleep20-21swapper/207:27:152
106099988,0cyclictest83050irq/26-0000:00:11:14:382
339960,0migration/331825-21gltestperf12:25:213
339960,0migration/32001-21sh11:46:543
339960,0migration/317378-21kthreadcore07:55:243
339960,0migration/315776-21sh12:50:513
29815060,0irq/29-eth0-tx-25593-21munin-node09:10:260
29815060,0irq/29-eth0-tx-0-21swapper/212:05:232
29815060,0irq/29-eth0-tx-0-21swapper/008:45:160
29805060,0irq/28-eth0-rx-12018-21fschecks_time10:20:203
29805060,0irq/28-eth0-rx-0-21swapper/311:28:003
259960,0migration/210470-21sh11:51:282
149960,0migration/09572-21sh10:15:550
149960,0migration/05801-21sh09:37:540
149960,0migration/03332-21sh10:32:270
149960,0migration/031724-21sh09:51:510
149960,0migration/026202-21fschecks_time11:25:190
149960,0migration/014528-21aten_r1power_en07:55:170
106089960,0cyclictest0-21swapper/110:47:551
106079965,0cyclictest23857-21sh09:49:070
106079965,0cyclictest1377-21tr07:45:230
106079960,0cyclictest0-21swapper/009:30:220
339950,0migration/38791-21kthreadcore12:30:263
339950,0migration/38521-21munin-node08:35:223
339950,0migration/37199-21taskset12:45:473
339950,0migration/332522-21munin-node11:10:203
339950,0migration/33186-21taskset08:06:513
339950,0migration/329619-21kthreadcore10:10:243
339950,0migration/329085-21taskset08:50:113
339950,0migration/328239-21timerandwakeup08:45:313
339950,0migration/327324-21kthreadcore12:40:253
339950,0migration/326167-21munin-node07:40:213
339950,0migration/323642-21kthreadcore09:05:243
339950,0migration/323493-21sshd12:38:563
339950,0migration/323077-21kthreadcore10:05:263
339950,0migration/321438-21munin-node09:25:323
339950,0migration/319400-21fschecks_time11:40:213
339950,0migration/317409-21kthreadcore09:45:243
339950,0migration/315540-21kthreadcore07:30:233
339950,0migration/311298-21kthreadcore10:00:263
339950,0migration/311071-21latency_hist09:00:063
329950,0watchdog/326929-21kernelversion08:25:213
329950,0watchdog/311995-21munin-node12:10:343
329950,0watchdog/30-21swapper/310:35:103
329950,0watchdog/30-21swapper/309:54:103
29815050,0irq/29-eth0-tx-7776-21perl09:40:202
29815050,0irq/29-eth0-tx-31077-21tr10:10:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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