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2026-06-24 - 14:38
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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 Wed Jun 24, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
601924939,0sleep30-21swapper/307:23:423
587224937,0sleep20-21swapper/207:22:012
598823430,0sleep10-21swapper/107:23:201
617823127,0sleep00-21swapper/007:25:310
62919970,0cyclictest14702-21grep07:51:200
62939960,0cyclictest0-21swapper/210:04:122
62919960,0cyclictest0-21swapper/010:43:010
339960,0migration/331030-21kthreadcore09:31:203
339960,0migration/327647-21sh10:45:413
339960,0migration/325379-21sh11:39:033
29805060,0irq/28-eth0-rx-29495-21perl12:01:153
29805060,0irq/28-eth0-rx-27883-21pmu-power11:01:223
29805060,0irq/28-eth0-rx-26169-21cut12:36:183
19160,0ktimersoftd/10-21swapper/110:26:191
149960,0migration/08641-21sh11:30:340
149960,0migration/029687-21sh11:04:560
149960,0migration/015719-21latency_hist12:31:020
62939955,0cyclictest0-21swapper/211:41:002
62939955,0cyclictest0-21swapper/210:54:012
62939955,0cyclictest0-21swapper/210:15:422
62939955,0cyclictest0-21swapper/209:59:182
62939954,0cyclictest3524-21snmpd12:22:532
62939950,0cyclictest0-21swapper/211:23:012
62939950,0cyclictest0-21swapper/209:28:152
62919955,0cyclictest0-21swapper/009:43:060
62919953,0cyclictest25951-21kworker/0:009:06:180
62919950,0cyclictest0-21swapper/012:36:320
62919950,0cyclictest0-21swapper/011:53:010
62919950,0cyclictest0-21swapper/011:35:120
62919950,0cyclictest0-21swapper/011:11:050
62919950,0cyclictest0-21swapper/010:26:370
339950,0migration/37400-21munin-node12:26:133
339950,0migration/37380-21taskset11:27:063
339950,0migration/36432-21unixbench_singl08:51:283
339950,0migration/36027-21aten_r1power_cu09:56:123
339950,0migration/35016-21fschecks_count10:51:153
339950,0migration/33432-21munin-node08:31:133
339950,0migration/331435-21runrttasks11:23:133
339950,0migration/329713-21kthreadcore11:41:183
339950,0migration/329302-21munin-node08:26:153
339950,0migration/327421-21needreboot09:06:203
339950,0migration/325655-21fschecks_time08:46:143
339950,0migration/325499-21kthreadcore10:06:193
339950,0migration/322775-21kthreadcore09:26:183
339950,0migration/321669-21kernelversion11:56:193
339950,0migration/321154-21cpuspeed_turbos09:46:143
339950,0migration/318282-21interrupts10:21:193
339950,0migration/317614-21kthreadcore11:16:193
339950,0migration/316722-21fschecks_time12:31:143
339950,0migration/316684-21kthreadcore12:11:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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