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2026-06-12 - 17:45
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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 Fri Jun 12, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3214624031,0sleep30-21swapper/307:22:163
3207123626,0sleep20-21swapper/207:21:232
3226223524,0sleep00-21swapper/007:23:370
3215923526,0sleep10-21swapper/107:22:261
4160,0ktimersoftd/00-21swapper/011:31:240
35160,0ktimersoftd/30-21swapper/310:05:293
339960,0migration/321697-21sh11:00:413
339960,0migration/315521-21sh11:16:103
339960,0migration/315521-21sh11:16:103
339960,0migration/311021-21crond07:55:023
29815060,0irq/29-eth0-tx-12910-21iostat_ios09:25:190
29805060,0irq/28-eth0-rx-32652-21df_inode11:10:173
29805060,0irq/28-eth0-rx-20653-21df_inode09:30:163
29805060,0irq/28-eth0-rx-20276-21ssh11:56:303
19160,0ktimersoftd/10-21swapper/111:31:241
149960,0migration/018112-21sh10:23:260
8305050,0irq/26-0000:00:4384-21sed09:20:033
339950,0migration/39072-21kthreadcore09:40:213
339950,0migration/37506-21kthreadcore10:15:213
339950,0migration/37312-21munin-node12:25:293
339950,0migration/37126-21timerandwakeup08:55:293
339950,0migration/35393-21munin-node09:55:213
339950,0migration/33818-21latency_hist07:50:023
339950,0migration/332625-21sshd08:52:283
339950,0migration/331641-21kthreadcore12:40:213
339950,0migration/328401-21pmu-power09:10:233
339950,0migration/328154-21kthreadcore11:05:213
339950,0migration/325020-21fschecks_time12:20:163
339950,0migration/322014-21taskset09:08:293
339950,0migration/320675-21kthreadcore11:20:183
339950,0migration/319668-21munin-node08:00:193
339950,0migration/318955-21munin-node12:35:183
339950,0migration/318695-21aten_r1power_cu08:45:133
339950,0migration/316262-21kthreadcore09:45:203
339950,0migration/315034-21cpuspeed_turbos07:35:153
339950,0migration/31068-21taskset11:27:553
324619955,0cyclictest0-21swapper/212:37:122
324619955,0cyclictest0-21swapper/211:35:052
324619955,0cyclictest0-21swapper/210:44:472
324619950,0cyclictest0-21swapper/211:59:592
324619950,0cyclictest0-21swapper/210:10:152
324599953,0cyclictest6216-21kworker/0:112:19:020
324599950,0cyclictest0-21swapper/010:35:580
329950,0watchdog/33082-21df12:45:143
329950,0watchdog/323416-21expr09:50:143
329950,0watchdog/32256-21kthreadcore12:05:223
329950,0watchdog/320189-21iostat10:25:183
329950,0watchdog/30-21swapper/309:15:223
29815050,0irq/29-eth0-tx-32362-21ssh12:24:262
29815050,0irq/29-eth0-tx-27046-21ssh11:25:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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