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2026-05-06 - 19:58
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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 Wed May 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193224736,0sleep20-21swapper/207:18:172
187824030,0sleep30-21swapper/307:17:423
193623524,0sleep10-21swapper/107:18:201
202323127,0sleep00-21swapper/007:19:190
2336991111,0cyclictest0-21swapper/009:22:270
4160,0ktimersoftd/00-21swapper/010:24:380
35160,0ktimersoftd/30-21swapper/310:24:383
339960,0migration/36125-21ksmtuned11:44:503
339960,0migration/34740-21sh12:41:273
339960,0migration/323695-21sh10:41:593
339960,0migration/319927-21unixbench-2d07:52:253
339960,0migration/318682-21sh10:00:453
339960,0migration/318278-21sh11:13:173
339960,0migration/312316-21kthreadcore08:57:163
29815060,0irq/29-eth0-tx-9983-21munin-node08:12:210
29805060,0irq/28-eth0-rx-7968-21kthreadcore07:22:193
29805060,0irq/28-eth0-rx-31900-21sshd10:45:433
29805060,0irq/28-eth0-rx-20068-21tr12:12:183
29805060,0irq/28-eth0-rx-16084-21tr11:32:173
23379965,0cyclictest0-21swapper/110:07:131
23379960,0cyclictest0-21swapper/111:19:061
23379960,0cyclictest0-21swapper/111:09:201
149960,0migration/07981-21sh12:03:470
149960,0migration/03745-21kthreadcore11:42:180
149960,0migration/026692-21switchtime12:32:260
8305050,0irq/26-0000:00:9997-21turbostat.cron08:57:002
8305050,0irq/26-0000:00:0-21swapper/207:52:002
35150,0ktimersoftd/30-21swapper/310:30:283
339950,0migration/37771-21taskset12:03:113
339950,0migration/37693-21fschecks_count11:47:153
339950,0migration/35428-21kthreadcore11:07:183
339950,0migration/33261-21kthreadcore10:47:183
339950,0migration/331789-21munin-node09:32:113
339950,0migration/331577-21taskset09:11:563
339950,0migration/331336-21kthreadcore08:47:183
339950,0migration/32954-21cpuspeed_turbos08:07:123
339950,0migration/328393-21runrttasks12:36:183
339950,0migration/324711-21fschecks_count07:37:123
339950,0migration/322832-21munin-node07:32:193
339950,0migration/321460-21fschecks_time07:57:133
339950,0migration/317291-21aten_r1power_fr08:17:103
339950,0migration/313809-21aten_r1power_fr08:37:113
339950,0migration/31251-21sh11:04:183
339950,0migration/312491-21latency09:17:193
339950,0migration/312144-21taskset11:28:503
339950,0migration/310715-21munin-node10:12:233
339950,0migration/310297-21irqcore10:52:193
339950,0migration/310268-21cpuspeed_turbos08:12:123
329950,0watchdog/329080-21sh11:37:483
329950,0watchdog/319762-21sed10:02:113
329950,0watchdog/311890-21cut07:27:193
29815050,0irq/29-eth0-tx-8072-21munin-node09:37:132
29815050,0irq/29-eth0-tx-6109-21tr11:07:182
29815050,0irq/29-eth0-tx-4912-21munin-node11:27:132
29815050,0irq/29-eth0-tx-28932-21seq10:23:552
29815050,0irq/29-eth0-tx-2608-21netstat12:37:202
29815050,0irq/29-eth0-tx-21257-21cut12:32:142
29815050,0irq/29-eth0-tx-21228-21ssh09:24:142
29815050,0irq/29-eth0-tx-13524-21munin-node07:52:210
29815050,0irq/29-eth0-tx-0-21swapper/212:05:472
29815050,0irq/29-eth0-tx-0-21swapper/210:32:212
29815050,0irq/29-eth0-tx-0-21swapper/210:15:542
29815050,0irq/29-eth0-tx-0-21swapper/008:07:200
29815050,0irq/29-eth0-tx-0-21swapper/007:57:110
29815050,0irq/29-eth0-tx-0-21swapper/007:38:540
29805050,0irq/28-eth0-rx-7170-21fschecks_count10:32:143
29805050,0irq/28-eth0-rx-28607-21fschecks_count10:07:143
29805050,0irq/28-eth0-rx-26379-21tune2fs09:47:133
29805050,0irq/28-eth0-rx-21065-21ssh09:23:453
29805050,0irq/28-eth0-rx-2073-21ssh09:52:103
29805050,0irq/28-eth0-rx-19975-21kthreadcore11:52:183
29805050,0irq/28-eth0-rx-12389-21kthreadcore12:07:183
29805050,0irq/28-eth0-rx-0-21swapper/312:45:153
29805050,0irq/28-eth0-rx-0-21swapper/312:29:523
29805050,0irq/28-eth0-rx-0-21swapper/312:25:283
29805050,0irq/28-eth0-rx-0-21swapper/311:20:343
29805050,0irq/28-eth0-rx-0-21swapper/310:59:313
29805050,0irq/28-eth0-rx-0-21swapper/310:19:433
29805050,0irq/28-eth0-rx-0-21swapper/309:37:123
29805050,0irq/28-eth0-rx-0-21swapper/309:27:183
27150,0ktimersoftd/20-21swapper/212:12:382
259950,0migration/29885-21kthreadcore08:32:182
259950,0migration/231791-21irqrtprio10:27:182
259950,0migration/22626-21aten_r1power_en07:22:122
259950,0migration/226114-21kthreadcore09:27:182
259950,0migration/223723-21unixbench_multi08:17:262
259950,0migration/223431-21sh11:54:512
259950,0migration/21615-21missed_timers10:07:202
259950,0migration/213920-21fschecks_time10:17:132
249950,0watchdog/226244-21ssh10:02:472
23389955,0cyclictest0-21swapper/212:07:212
23389955,0cyclictest0-21swapper/211:22:252
23379955,0cyclictest0-21swapper/112:19:481
23379955,0cyclictest0-21swapper/111:01:081
23379955,0cyclictest0-21swapper/110:42:221
23379955,0cyclictest0-21swapper/110:31:301
23379955,0cyclictest0-21swapper/110:13:221
23379955,0cyclictest0-21swapper/109:34:441
23379954,0cyclictest6497-21turbostat.cron09:17:001
23379950,0cyclictest0-21swapper/110:51:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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