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2026-06-16 - 20:49
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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 Tue Jun 16, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2180228483,0sleep10-21swapper/107:20:311
28874995353,0cyclictest83050irq/26-0000:00:09:51:412
2844724536,0sleep20-21swapper/207:21:242
2856623332,0sleep00-21swapper/007:22:420
2855423223,0sleep30-21swapper/307:22:333
35170,0ktimersoftd/30-21swapper/309:48:443
288749970,0cyclictest0-21swapper/208:40:242
8305060,0irq/26-0000:00:19147-21diskstats07:40:363
8305060,0irq/26-0000:00:13879-21iostat_ios08:20:403
339960,0migration/33862-21sh09:37:543
339960,0migration/324145-21sh10:06:593
339960,0migration/321797-21sh11:59:383
339960,0migration/318092-21kthreadcore12:15:403
339960,0migration/317998-21sh12:35:153
339960,0migration/317721-21sendmail_mailqu11:35:463
339960,0migration/317533-21sh10:21:093
29815060,0irq/29-eth0-tx-16918-21munin-node08:45:480
29805060,0irq/28-eth0-rx-9272-21cut10:55:413
29805060,0irq/28-eth0-rx-5568-21iostat_ios10:35:403
29805060,0irq/28-eth0-rx-3866-21munin-node12:45:363
29805060,0irq/28-eth0-rx-29352-21fschecks_count11:45:353
29805060,0irq/28-eth0-rx-27577-21iostat_ios11:25:383
29805060,0irq/28-eth0-rx-25505-21perl12:20:363
29805060,0irq/28-eth0-rx-11989-21sh12:10:423
288749960,0cyclictest0-21swapper/209:13:592
27160,0ktimersoftd/20-21swapper/210:55:212
149960,0migration/016269-21kthreadcore11:55:420
149960,0migration/015709-21sh10:02:280
8305050,0irq/26-0000:00:8112-21tr09:40:392
8305050,0irq/26-0000:00:4985-21cut11:50:222
8305050,0irq/26-0000:00:449-21kthreadcore08:30:403
8305050,0irq/26-0000:00:3552-21lldpd07:26:113
8305050,0irq/26-0000:00:31330-21cut09:35:422
8305050,0irq/26-0000:00:30042-21irqrtprio09:15:393
8305050,0irq/26-0000:00:28082-21kthreadcore08:05:413
8305050,0irq/26-0000:00:27537-21kthreadcore08:50:413
8305050,0irq/26-0000:00:23559-21grep08:45:493
8305050,0irq/26-0000:00:21618-21df_abs09:10:343
8305050,0irq/26-0000:00:2001-21munin-node07:50:383
8305050,0irq/26-0000:00:0-21swapper/308:55:403
8305050,0irq/26-0000:00:0-21swapper/308:35:333
8305050,0irq/26-0000:00:0-21swapper/308:15:353
8305050,0irq/26-0000:00:0-21swapper/307:45:353
4150,0ktimersoftd/00-21swapper/011:14:410
339950,0migration/38521-21munin-node07:55:343
339950,0migration/37851-21sh09:59:373
339950,0migration/37391-21fschecks_time09:00:363
339950,0migration/36859-21kthreadcore10:15:403
339950,0migration/34738-21sshd08:11:493
339950,0migration/33970-21latency_hist07:30:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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