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2026-04-23 - 10:29
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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 Thu Apr 23, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2101823924,0sleep00-21swapper/019:18:120
2101423725,0sleep10-21swapper/119:18:091
2106723627,0sleep20-21swapper/219:18:502
2091823626,0sleep30-21swapper/319:17:033
35160,0ktimersoftd/30-21swapper/321:37:243
339960,0migration/331122-21kernelversion23:11:103
339960,0migration/329540-21sh00:25:473
339960,0migration/32825-21pmu-power20:56:143
339960,0migration/32025-21sh00:06:363
339960,0migration/318496-21kthreadcore00:36:123
339960,0migration/314495-21sh22:21:383
339960,0migration/313295-21irqrtprio21:46:093
339960,0migration/313171-21munin-node23:01:083
29805060,0irq/28-eth0-rx-23022-21yum22:26:213
29805060,0irq/28-eth0-rx-16587-21port_sshpriv23:56:153
29805060,0irq/28-eth0-rx-0-21swapper/323:18:193
27160,0ktimersoftd/20-21swapper/222:42:312
213169965,0cyclictest28747-21tail19:46:111
213139965,0cyclictest13768-21ssh22:21:140
8305050,0irq/26-0000:00:18902-21latency_hist00:00:542
35150,0ktimersoftd/30-21swapper/322:42:313
339950,0migration/3646-21kthreadcore00:26:113
339950,0migration/35886-21munin-node00:46:143
339950,0migration/35886-21munin-node00:46:143
339950,0migration/33611-21kthreadcore20:36:103
339950,0migration/328393-21if_eth122:51:113
339950,0migration/32722-21missed_timers21:56:123
339950,0migration/325963-21idleruntime22:31:083
339950,0migration/324927-21taskset20:27:253
339950,0migration/324675-21kthreadcore20:51:113
339950,0migration/320166-21munin-node22:46:123
339950,0migration/318903-21kthreadcore23:21:113
339950,0migration/314789-21unixbench_multi23:36:193
339950,0migration/313022-21kthreadcore20:21:103
339950,0migration/312563-21sendmail_mailst00:31:163
339950,0migration/310908-21kthreadcore20:41:113
329950,0watchdog/36862-21python21:21:163
329950,0watchdog/36643-21cut22:36:133
329950,0watchdog/332495-21sh23:47:173
329950,0watchdog/313699-21tr21:26:123
329950,0watchdog/30-21swapper/322:16:053
29815050,0irq/29-eth0-tx-6683-21fschecks_count00:31:072
29815050,0irq/29-eth0-tx-6451-21fschecks_count23:16:072
29815050,0irq/29-eth0-tx-5441-21munin-node22:01:072
29815050,0irq/29-eth0-tx-4081-21cut00:11:072
29815050,0irq/29-eth0-tx-21747-21munin-node20:06:200
29815050,0irq/29-eth0-tx-2016-21ssh22:52:322
29815050,0irq/29-eth0-tx-18268-21munin-node20:26:120
29815050,0irq/29-eth0-tx-10341-21kthreadcore23:36:112
29815050,0irq/29-eth0-tx-0-21swapper/223:07:282
29815050,0irq/29-eth0-tx-0-21swapper/222:57:482
29815050,0irq/29-eth0-tx-0-21swapper/222:46:562
29815050,0irq/29-eth0-tx-0-21swapper/222:38:212
29815050,0irq/29-eth0-tx-0-21swapper/221:48:192
29805050,0irq/28-eth0-rx-8158-21kthreadcore00:11:143
29805050,0irq/28-eth0-rx-32408-21cat19:50:533
29805050,0irq/28-eth0-rx-25876-21ssh00:01:443
29805050,0irq/28-eth0-rx-25051-21kthreadcore23:26:113
29805050,0irq/28-eth0-rx-2429-21cut23:31:123
29805050,0irq/28-eth0-rx-21366-21munin-node23:06:073
29805050,0irq/28-eth0-rx-20951-21sensors20:46:163
29805050,0irq/28-eth0-rx-15647-21irqstats22:06:103
29805050,0irq/28-eth0-rx-15640-21cut00:16:123
29805050,0irq/28-eth0-rx-0-21swapper/323:41:123
29805050,0irq/28-eth0-rx-0-21swapper/322:04:493
29805050,0irq/28-eth0-rx-0-21swapper/321:41:123
29805050,0irq/28-eth0-rx-0-21swapper/321:33:113
29805050,0irq/28-eth0-rx-0-21swapper/321:16:103
29805050,0irq/28-eth0-rx-0-21swapper/320:31:073
27150,0ktimersoftd/20-21swapper/221:37:242
259950,0migration/29712-21fschecks_count21:26:082
259950,0migration/25189-21munin-node21:01:082
259950,0migration/23855-21sh21:57:192
259950,0migration/23348-21kthreadcore19:51:112
259950,0migration/229882-21sh22:12:332
259950,0migration/227537-21sendmail_mailqu00:21:172
259950,0migration/225789-21sh21:34:052
259950,0migration/223144-21latency_hist23:25:542
259950,0migration/213750-21netstat22:21:132
213179955,0cyclictest0-21swapper/223:48:592
213179955,0cyclictest0-21swapper/223:32:362
213179955,0cyclictest0-21swapper/223:03:262
213179955,0cyclictest0-21swapper/219:58:582
213179950,0cyclictest0-21swapper/223:44:252
213179950,0cyclictest0-21swapper/222:16:172
213179950,0cyclictest0-21swapper/221:23:472
213169950,0cyclictest0-21swapper/123:36:081
213139955,0cyclictest0-21swapper/021:06:210
213139955,0cyclictest0-21swapper/000:24:410
213139950,0cyclictest0-21swapper/023:22:430
213139950,0cyclictest0-21swapper/022:46:460
213139950,0cyclictest0-21swapper/022:04:220
213139950,0cyclictest0-21swapper/000:33:020
19150,0ktimersoftd/10-21swapper/122:42:311
19150,0ktimersoftd/10-21swapper/121:37:241
179950,0migration/18511-21sh22:21:071
179950,0migration/13996-21sh21:57:431
179950,0migration/121717-21if_eth1.221:51:091
179950,0migration/120802-21missed_timers00:36:131
179950,0migration/11585-21latency_hist23:50:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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