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2026-04-25 - 11:31
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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 Sat Apr 25, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2106624027,0sleep20-21swapper/219:19:002
2090723725,0sleep00-21swapper/019:17:100
2122023424,0sleep10-21swapper/119:20:471
2105723127,0sleep30-21swapper/319:18:533
35160,0ktimersoftd/30-21swapper/323:44:273
339960,0migration/332495-21sh23:46:433
339960,0migration/330113-21munin-node19:26:203
339960,0migration/316276-21sh23:39:323
29815060,0irq/29-eth0-tx-11364-21munin-node21:06:240
29805060,0irq/28-eth0-rx-29757-21python22:11:283
29805060,0irq/28-eth0-rx-21754-21sh23:21:573
213139966,0cyclictest0-21swapper/200:49:092
213139965,0cyclictest24649-21ps22:11:212
213139960,0cyclictest0-21swapper/223:29:232
213139960,0cyclictest0-21swapper/222:41:552
213139960,0cyclictest0-21swapper/221:54:192
149960,0migration/07190-21kthreadcore23:51:230
149960,0migration/05525-21sh00:29:090
149960,0migration/027159-21kthreadcore20:31:190
149960,0migration/012567-21switchtime22:01:290
8305050,0irq/26-0000:00:6808-21pmu-power21:21:232
8305050,0irq/26-0000:00:1547-21awk22:36:042
339950,0migration/34150-21kthreadcore19:51:213
339950,0migration/34091-21cpuspeed_turbos20:16:163
339950,0migration/332562-21df_abs23:31:173
339950,0migration/328399-21taskset20:07:413
339950,0migration/324892-21kthreadcore00:21:213
339950,0migration/324863-21kthreadcore23:06:213
339950,0migration/32456-21kthreadcore21:21:203
339950,0migration/324442-21kthreadcore19:21:193
339950,0migration/322235-21munin-node21:51:203
339950,0migration/321818-21kthreadcore00:01:213
339950,0migration/32171-21taskset21:38:293
339950,0migration/318201-21diskmemload22:26:203
339950,0migration/315289-21fschecks_time20:01:163
339950,0migration/314548-21sh23:20:513
339950,0migration/313759-21idleruntime23:01:183
339950,0migration/311729-21kthreadcore21:26:213
339950,0migration/310792-21latency_hist19:36:033
329950,0watchdog/332140-21grep21:56:223
329950,0watchdog/322023-21ssh00:36:473
329950,0watchdog/321001-21smartctl20:46:263
329950,0watchdog/320869-21tr21:31:183
329950,0watchdog/31689-21sensors22:51:273
329950,0watchdog/311647-21hddtemp_smartct23:56:193
329950,0watchdog/30-21swapper/322:36:233
329950,0watchdog/30-21swapper/300:34:193
29815050,0irq/29-eth0-tx-4113-21sed23:11:292
29815050,0irq/29-eth0-tx-4110-21munin-node21:01:240
29815050,0irq/29-eth0-tx-32717-21munin-node20:36:250
29815050,0irq/29-eth0-tx-21991-21munin-node20:51:230
29815050,0irq/29-eth0-tx-17751-21perl22:26:182
29815050,0irq/29-eth0-tx-0-21swapper/021:21:230
29815050,0irq/29-eth0-tx-0-21swapper/020:46:270
29815050,0irq/29-eth0-tx-0-21swapper/019:46:150
29805050,0irq/28-eth0-rx-8487-21cut22:56:243
29805050,0irq/28-eth0-rx-8267-21perl20:41:173
29805050,0irq/28-eth0-rx-26674-21munin-node22:31:183
29805050,0irq/28-eth0-rx-25449-21kthreadcore00:41:223
29805050,0irq/28-eth0-rx-2335-21kthreadcore22:16:213
29805050,0irq/28-eth0-rx-20834-21cut21:11:203
29805050,0irq/28-eth0-rx-1915-21kthreadcore00:26:243
29805050,0irq/28-eth0-rx-13219-21ssh22:02:313
29805050,0irq/28-eth0-rx-1098-21fschecks_time20:36:183
29805050,0irq/28-eth0-rx-0-21swapper/323:26:233
29805050,0irq/28-eth0-rx-0-21swapper/323:11:223
29805050,0irq/28-eth0-rx-0-21swapper/322:42:563
29805050,0irq/28-eth0-rx-0-21swapper/322:07:263
29805050,0irq/28-eth0-rx-0-21swapper/321:41:213
29805050,0irq/28-eth0-rx-0-21swapper/300:46:203
29805050,0irq/28-eth0-rx-0-21swapper/300:13:433
259950,0migration/227799-21munin-node20:06:242
249950,0watchdog/29410-21ssh23:53:232
249950,0watchdog/213005-21kthreadcore19:56:222
213139955,0cyclictest0-21swapper/223:36:092
213139955,0cyclictest0-21swapper/223:21:302
213139955,0cyclictest0-21swapper/222:57:132
213139955,0cyclictest0-21swapper/222:21:352
213139955,0cyclictest0-21swapper/222:21:352
213139955,0cyclictest0-21swapper/222:05:212
213139955,0cyclictest0-21swapper/200:35:072
213139950,0cyclictest0-21swapper/200:07:222
213129955,0cyclictest0-21swapper/122:01:151
213129954,0cyclictest3524-21snmpd21:32:281
213119950,0cyclictest0-21swapper/000:08:160
213119950,0cyclictest0-21swapper/000:05:160
179950,0migration/15150-21taskset00:28:061
179950,0migration/131347-21taskset00:43:481
179950,0migration/130791-21kthreadcore21:16:211
179950,0migration/129347-21munin-node20:11:161
179950,0migration/127998-21switchtime20:06:271
179950,0migration/124956-21kthreadcore20:51:201
179950,0migration/123953-21sh22:27:211
179950,0migration/122995-21sh00:39:301
179950,0migration/120168-21fschecks_time00:01:171
179950,0migration/119711-21taskset21:47:521
179950,0migration/119101-21latency_hist00:01:041
179950,0migration/117904-21kthreadcore00:16:221
179950,0migration/114247-21latency22:21:211
179950,0migration/114247-21latency22:21:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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