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2026-06-14 - 22:07
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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 Sun Jun 14, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3203326867,0sleep10-21swapper/107:22:441
3219824030,0sleep20-21swapper/207:24:422
3190323928,0sleep00-21swapper/007:21:150
3185323828,0sleep30-21swapper/307:20:423
32316991212,0cyclictest3154-21sensors09:35:340
323169999,0cyclictest3524-21snmpd11:23:320
339960,0migration/35668-21sh10:53:203
339960,0migration/329295-21sh10:48:153
339960,0migration/326989-21sh11:41:483
339960,0migration/325463-21sh12:37:413
339960,0migration/320384-21aten_r1power_en09:30:243
339960,0migration/320346-21sh11:56:123
339960,0migration/318446-21sh08:45:123
339960,0migration/315062-21munin-node11:15:333
339960,0migration/313486-21sh09:43:083
323189966,0cyclictest0-21swapper/212:10:332
323189960,0cyclictest0-21swapper/208:35:312
29815060,0irq/29-eth0-tx-21846-21munin-node07:40:370
29815060,0irq/29-eth0-tx-15233-21munin-node09:05:260
29805060,0irq/28-eth0-rx-4470-21netstat12:05:323
29805060,0irq/28-eth0-rx-1865-21iostat12:25:283
29805060,0irq/28-eth0-rx-17409-21df_inode10:05:263
29805060,0irq/28-eth0-rx-1650-21ntp_states10:30:333
29805060,0irq/28-eth0-rx-12231-21diskstats09:25:263
149960,0migration/03497-21unixbench-2d08:30:370
149960,0migration/026013-21sh12:39:100
149960,0migration/020812-21sh11:57:310
149960,0migration/014560-21sh12:12:510
4150,0ktimersoftd/00-21swapper/012:25:140
339950,0migration/39933-21kthreadcore12:10:303
339950,0migration/3822-21runrttasks08:10:263
339950,0migration/3822-21runrttasks08:10:263
339950,0migration/35226-21kthreadcore12:45:293
339950,0migration/33560-21taskset07:48:213
339950,0migration/330677-21rt-features12:20:343
339950,0migration/326630-21gltestperf10:10:273
339950,0migration/324794-21kthreadcore12:00:313
339950,0migration/323863-21kthreadcore08:25:303
339950,0migration/322025-21sendmail_mailtr12:15:373
339950,0migration/321143-21kthreadcore11:20:323
339950,0migration/320626-21kthreadcore09:05:313
339950,0migration/32047-21runrttasks10:15:243
339950,0migration/317811-21ntp_kernel_pll_12:50:333
339950,0migration/316286-21kthreadcore09:45:303
339950,0migration/31566-21kthreadcore09:55:293
339950,0migration/314062-21munin-node10:40:303
339950,0migration/313625-21kthreadcore12:30:303
339950,0migration/31319-21runrttasks12:41:383
339950,0migration/311868-21munin-node10:20:333
339950,0migration/311468-21cpu11:35:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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