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2026-06-13 - 21:04
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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 Sat Jun 13, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
505024637,0sleep20-21swapper/207:22:432
498324435,0sleep10-21swapper/107:21:581
3066423929,0sleep30-21swapper/307:20:153
500723726,0sleep00-21swapper/007:22:170
5322991313,0cyclictest3524-21snmpd10:13:210
5322991111,0cyclictest3524-21snmpd10:53:290
8305060,0irq/26-0000:00:20249-21crond11:00:082
53249960,0cyclictest0-21swapper/110:53:421
339960,0migration/39249-21sh09:36:313
339960,0migration/37251-21sh12:43:113
339960,0migration/324213-21mdstat10:40:283
339960,0migration/312534-21sh09:57:463
339960,0migration/312163-21irqcore09:40:253
29805060,0irq/28-eth0-rx-8643-21perl11:30:213
29805060,0irq/28-eth0-rx-24269-21runrttasks09:27:413
29805060,0irq/28-eth0-rx-22097-21if_eth112:15:233
149960,0migration/08632-21sh10:33:100
149960,0migration/07873-21switchtime11:45:320
149960,0migration/032158-21kthreadcore08:25:250
149960,0migration/017123-21kthreadcore10:00:250
149960,0migration/015338-21kthreadcore09:20:270
149960,0migration/014659-21sh10:17:080
149960,0migration/010623-21sh12:06:150
149960,0migration/010623-21sh12:06:150
8305050,0irq/26-0000:00:9365-21munin-run08:35:072
8305050,0irq/26-0000:00:4938-21cut09:55:082
8305050,0irq/26-0000:00:30632-21crond08:05:072
53279955,0cyclictest0-21swapper/212:28:522
53279955,0cyclictest0-21swapper/207:35:192
53279954,0cyclictest6662-21awk07:25:232
53249955,0cyclictest0-21swapper/111:30:451
53249955,0cyclictest0-21swapper/108:35:071
53249950,0cyclictest0-21swapper/112:30:591
53249950,0cyclictest0-21swapper/112:18:221
53249950,0cyclictest0-21swapper/111:50:091
53249950,0cyclictest0-21swapper/111:27:551
53229950,0cyclictest0-21swapper/010:59:180
4150,0ktimersoftd/00-21swapper/009:54:220
339950,0migration/39977-21kthreadcore10:15:263
339950,0migration/39319-21runrttasks07:50:183
339950,0migration/39293-21taskset09:17:013
339950,0migration/36704-21fschecks_count08:55:233
339950,0migration/33234-21kthreadcore08:05:253
339950,0migration/330190-21diskmemload11:22:153
339950,0migration/329695-21timerandwakeup12:35:333
339950,0migration/328236-21fschecks_time08:25:203
339950,0migration/327106-21taskset08:23:283
339950,0migration/326755-21kernelversion11:40:253
339950,0migration/325596-21gltestperf10:25:223
339950,0migration/32118-21munin-node10:30:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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