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2026-06-01 - 19:01
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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 01, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1519824738,0sleep10-21swapper/107:20:341
1528423727,0sleep20-21swapper/207:21:352
1523323727,0sleep30-21swapper/307:21:003
1524623420,0sleep00-21swapper/007:21:050
15583991515,0cyclictest0-21swapper/209:24:362
155819988,0cyclictest3524-21snmpd11:02:130
339960,0migration/331798-21sh12:30:233
339960,0migration/321095-21sh10:52:323
339960,0migration/313862-21sh09:51:333
339960,0migration/311932-21sh10:46:033
339960,0migration/310162-21sh11:41:043
29805060,0irq/28-eth0-rx-6731-21ssh10:04:353
29805060,0irq/28-eth0-rx-24500-21cut09:59:213
29805060,0irq/28-eth0-rx-22542-21ssh12:09:143
29805060,0irq/28-eth0-rx-13081-21cut09:34:213
155829965,0cyclictest3524-21snmpd11:15:261
149960,0migration/030330-21sh12:12:370
149960,0migration/010730-21sh09:30:360
8305050,0irq/26-0000:00:22915-21cut07:29:083
35150,0ktimersoftd/30-21swapper/307:28:043
339950,0migration/38016-21kthreadcore10:24:243
339950,0migration/36992-21irqrtprio09:09:263
339950,0migration/35972-21taskset09:48:373
339950,0migration/332538-21kthreadcore10:59:253
339950,0migration/33229-21munin-node11:54:343
339950,0migration/330687-21fschecks_count07:34:213
339950,0migration/326049-21runrttasks11:33:243
339950,0migration/324948-21munin-node12:44:343
339950,0migration/324913-21kthreadcore10:54:263
339950,0migration/321295-21munin-node10:34:263
339950,0migration/31910-21irqcore11:19:263
339950,0migration/318998-21sendmail_mailst09:14:313
339950,0migration/315242-21munin-node08:49:303
339950,0migration/314875-21gltestperf12:04:223
329950,0watchdog/34862-21kthreadcore07:59:273
329950,0watchdog/322597-21kthreadcore11:49:243
329950,0watchdog/322069-21fschecks_time09:39:233
329950,0watchdog/30-21swapper/310:39:283
329950,0watchdog/30-21swapper/310:20:323
329950,0watchdog/30-21swapper/308:04:273
29815050,0irq/29-eth0-tx-6249-21ntp_states10:04:302
29815050,0irq/29-eth0-tx-5613-21ssh12:14:422
29815050,0irq/29-eth0-tx-5078-21munin-node07:39:270
29815050,0irq/29-eth0-tx-32265-21ssh11:18:012
29815050,0irq/29-eth0-tx-26972-21munin-node12:49:322
29815050,0irq/29-eth0-tx-23510-21munin-node08:59:230
29815050,0irq/29-eth0-tx-21245-21ssh09:39:192
29815050,0irq/29-eth0-tx-18230-21fschecks_time10:14:222
29815050,0irq/29-eth0-tx-15793-21munin-node07:24:300
29815050,0irq/29-eth0-tx-15357-21grep10:09:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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