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2026-06-28 - 15:03
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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 Sun Jun 28, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1552325140,0sleep00-21swapper/007:24:050
1559325038,0sleep10-21swapper/107:24:541
1556523425,0sleep20-21swapper/207:24:392
1536923430,0sleep30-21swapper/307:22:203
35160,0ktimersoftd/30-21swapper/311:58:023
35160,0ktimersoftd/30-21swapper/311:51:153
35160,0ktimersoftd/30-21swapper/309:32:503
339960,0migration/330329-21munin-node10:01:433
339960,0migration/317069-21sh11:28:533
339960,0migration/31446-21sh10:23:573
339960,0migration/311742-21sh10:47:043
29805060,0irq/28-eth0-rx-22769-21ntp_kernel_err12:26:413
29805060,0irq/28-eth0-rx-19242-21sed10:16:383
29805060,0irq/28-eth0-rx-17402-21grep12:06:373
29805060,0irq/28-eth0-rx-11731-21ssh10:31:323
29805060,0irq/28-eth0-rx-0-21swapper/309:49:183
158159965,0cyclictest3184-21iostat_ios08:46:382
149960,0migration/03493-21sh10:43:270
149960,0migration/031624-21sh11:17:360
149960,0migration/022143-21kthreadcore09:21:380
8305050,0irq/26-0000:00:2471-21kauditd08:06:202
339950,0migration/36923-21munin-node11:21:403
339950,0migration/3648-21kthreadcore12:51:403
339950,0migration/36326-21kthreadcore08:01:383
339950,0migration/33415-21fschecks_time10:26:343
339950,0migration/330745-21latency_hist09:06:203
339950,0migration/330236-21kthreadcore07:56:383
339950,0migration/329980-21taskset08:17:053
339950,0migration/329791-21taskset07:32:223
339950,0migration/328389-21pmu-power10:56:423
339950,0migration/326014-21timerandwakeup07:51:453
339950,0migration/322379-21kthreadcore11:51:373
339950,0migration/321849-21latency11:11:373
339950,0migration/320883-21hddtemp_smartct08:36:353
339950,0migration/315957-21kthreadcore07:46:383
339950,0migration/31513-21kthreadcore11:01:383
339950,0migration/314871-21kthreadcore08:31:373
339950,0migration/314311-21kthreadcore10:11:403
339950,0migration/314275-21kthreadcore08:51:443
339950,0migration/310541-21munin-node08:06:373
329950,0watchdog/3298050irq/28-eth0-rx-12:01:283
329950,0watchdog/315662-21cut09:16:403
29815050,0irq/29-eth0-tx-9593-21tr09:51:382
29815050,0irq/29-eth0-tx-4517-21unixbench-2d09:46:442
29815050,0irq/29-eth0-tx-26879-21munin-node07:56:370
29815050,0irq/29-eth0-tx-21361-21munin-node09:41:492
29815050,0irq/29-eth0-tx-13010-21munin-node09:16:450
29815050,0irq/29-eth0-tx-10270-21ssh12:41:312
29815050,0irq/29-eth0-tx-0-21swapper/210:53:432
29815050,0irq/29-eth0-tx-0-21swapper/009:09:100
29815050,0irq/29-eth0-tx-0-21swapper/008:21:340
29805050,0irq/28-eth0-rx-8578-21kthreadcore08:26:393
29805050,0irq/28-eth0-rx-400-21iostat_ios12:16:383
29805050,0irq/28-eth0-rx-29149-21fschecks_count10:41:353
29805050,0irq/28-eth0-rx-26895-21ssh11:36:253
29805050,0irq/28-eth0-rx-2589-21sshd09:29:453
29805050,0irq/28-eth0-rx-14405-21cut12:41:403
29805050,0irq/28-eth0-rx-0-21swapper/312:46:363
29805050,0irq/28-eth0-rx-0-21swapper/312:21:413
29805050,0irq/28-eth0-rx-0-21swapper/311:16:443
29805050,0irq/28-eth0-rx-0-21swapper/311:07:153
29805050,0irq/28-eth0-rx-0-21swapper/310:39:023
29805050,0irq/28-eth0-rx-0-21swapper/310:06:373
29805050,0irq/28-eth0-rx-0-21swapper/309:42:543
29805050,0irq/28-eth0-rx-0-21swapper/309:36:373
29805050,0irq/28-eth0-rx-0-21swapper/308:11:343
27150,0ktimersoftd/20-21swapper/210:36:322
259950,0migration/29412-21irqcore12:21:392
259950,0migration/2852-21sh10:22:232
259950,0migration/26563-21kthreadcore12:36:372
259950,0migration/210037-21taskset11:26:352
249950,0watchdog/28756-21munin-node10:26:402
19150,0ktimersoftd/10-21swapper/110:10:451
179950,0migration/18885-21kthreadcore11:06:381
179950,0migration/131665-21switchtime12:31:451
179950,0migration/131233-21fschecks_time07:36:341
179950,0migration/128529-21taskset09:42:491
179950,0migration/124362-21kthreadcore11:51:381
179950,0migration/117160-21fschecks_count12:26:351
179950,0migration/116712-21kthreadcore08:31:381
169950,0watchdog/1775-21ssh11:21:241
169950,0watchdog/13272-21kthreadcore12:36:361
169950,0watchdog/111645-21kthreadcore12:21:401
158089950,0cyclictest0-21swapper/110:38:581
158089950,0cyclictest0-21swapper/110:32:491
158089950,0cyclictest0-21swapper/109:49:281
158089950,0cyclictest0-21swapper/109:21:241
149950,0migration/0770-21fschecks_count10:06:330
149950,0migration/07239-21munin-node11:21:430
149950,0migration/06134-21fschecks_time08:26:350
149950,0migration/05757-21fschecks_count07:41:350
149950,0migration/05253-21kthreadcore10:26:370
149950,0migration/032570-21kthreadcore09:26:390
149950,0migration/030363-21kthreadcore10:21:380
149950,0migration/030283-21aten_r1power_en09:46:290
149950,0migration/030019-21fschecks_time11:56:340
149950,0migration/029803-21sh10:59:090
149950,0migration/02881-21irqcore12:36:360
149950,0migration/028793-21kthreadcore11:36:370
149950,0migration/027748-21kthreadcore10:01:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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