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2026-06-16 - 01:25
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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 Tue Jun 16, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1925824635,0sleep00-21swapper/019:23:400
1901723828,0sleep30-21swapper/319:20:513
1902023525,0sleep10-21swapper/119:20:531
1907723324,0sleep20-21swapper/219:21:342
194779988,0cyclictest3524-21snmpd22:15:290
339960,0migration/38660-21sh23:59:433
339960,0migration/3718-21sh00:10:523
339960,0migration/35038-21sh23:36:103
339960,0migration/313357-21sh22:26:253
339960,0migration/312383-21sh23:23:473
329960,0watchdog/38128-21port_sshpriv20:20:433
329960,0watchdog/38128-21port_sshpriv20:20:433
27160,0ktimersoftd/20-21swapper/222:50:392
194789960,0cyclictest0-21swapper/123:05:371
149960,0migration/0960-21sh22:57:390
149960,0migration/05017-21sh23:36:050
149960,0migration/022556-21missed_timers21:15:380
8305050,0irq/26-0000:00:6248-21cat22:25:202
4150,0ktimersoftd/030879-21diskmemload23:17:530
4150,0ktimersoftd/00-21swapper/000:21:540
339950,0migration/37905-21idleruntime23:40:363
339950,0migration/35994-21fschecks_time00:35:343
339950,0migration/332624-21kthreadcore20:15:383
339950,0migration/332473-21irqcore00:50:373
339950,0migration/330013-21munin-node22:35:433
339950,0migration/32837-21munin-node19:35:353
339950,0migration/327055-21kthreadcore20:35:373
339950,0migration/326489-21munin-node00:25:443
339950,0migration/325103-21kthreadcore23:10:403
339950,0migration/324895-21munin-node21:20:353
339950,0migration/324822-21sh22:52:543
339950,0migration/322652-21kthreadcore20:55:373
339950,0migration/319848-21unixbench_multi23:25:463
339950,0migration/319614-21latency_hist19:25:203
339950,0migration/31914-21cpuspeed_turbos21:45:323
339950,0migration/318537-21taskset21:54:153
339950,0migration/316536-21aten_r1power_en20:30:313
339950,0migration/312652-21latency_hist22:10:203
339950,0migration/310894-21kthreadcore22:45:373
329950,0watchdog/37717-21sh22:43:273
329950,0watchdog/331032-21diskstats19:55:303
329950,0watchdog/315036-21iostat_ios00:40:353
329950,0watchdog/314031-21iostat22:10:353
29815050,0irq/29-eth0-tx-28789-21munin-node00:30:422
29815050,0irq/29-eth0-tx-11409-21cut21:30:382
29815050,0irq/29-eth0-tx-0-21swapper/021:25:320
29815050,0irq/29-eth0-tx-0-21swapper/021:20:320
29815050,0irq/29-eth0-tx-0-21swapper/020:05:040
29815050,0irq/29-eth0-tx-0-21swapper/019:35:350
29805050,0irq/28-eth0-rx-5521-21cut00:15:393
29805050,0irq/28-eth0-rx-2971-21timerwakeupswit00:30:453
29805050,0irq/28-eth0-rx-25432-21cut23:30:383
29805050,0irq/28-eth0-rx-21997-21tune2fs22:15:313
29805050,0irq/28-eth0-rx-18452-21fschecks_time00:05:333
29805050,0irq/28-eth0-rx-18047-21ssh23:06:453
29805050,0irq/28-eth0-rx-14093-21ssh21:30:473
29805050,0irq/28-eth0-rx-12724-21kthreadcore00:00:373
29805050,0irq/28-eth0-rx-1223-21kthreadcore22:00:383
29805050,0irq/28-eth0-rx-0-21swapper/323:45:433
29805050,0irq/28-eth0-rx-0-21swapper/323:00:373
29805050,0irq/28-eth0-rx-0-21swapper/322:55:353
29805050,0irq/28-eth0-rx-0-21swapper/322:34:313
29805050,0irq/28-eth0-rx-0-21swapper/322:20:373
29805050,0irq/28-eth0-rx-0-21swapper/321:55:373
29805050,0irq/28-eth0-rx-0-21swapper/321:36:503
29805050,0irq/28-eth0-rx-0-21swapper/319:45:353
29805050,0irq/28-eth0-rx-0-21swapper/300:46:443
29805050,0irq/28-eth0-rx-0-21swapper/300:20:423
259950,0migration/210429-21kthreadcore23:20:412
194799955,0cyclictest0-21swapper/222:05:342
194799954,0cyclictest3524-21snmpd00:50:282
194799954,0cyclictest3524-21snmpd00:26:582
194789955,0cyclictest0-21swapper/123:40:371
194789950,0cyclictest0-21swapper/123:46:271
194789950,0cyclictest0-21swapper/100:53:371
194779950,0cyclictest0-21swapper/022:06:090
19150,0ktimersoftd/10-21swapper/122:55:321
19150,0ktimersoftd/10-21swapper/122:10:551
19150,0ktimersoftd/10-21swapper/100:05:321
179950,0migration/19464-21kthreadcore22:05:381
179950,0migration/19111-21latency_hist00:00:201
179950,0migration/16618-21fschecks_time20:45:331
179950,0migration/13586-21irqcore23:00:371
179950,0migration/132457-21aten_r1power_vo22:40:321
179950,0migration/129990-21timerandwakeup20:35:451
179950,0migration/127462-21needreboot22:15:371
179950,0migration/121935-21kthreadcore20:10:371
179950,0migration/121200-21sh00:42:371
179950,0migration/120470-21irqcore21:55:361
169950,0watchdog/124873-21idleruntime21:20:351
149950,0migration/04932-21sh22:22:040
149950,0migration/03204-21kthreadcore20:40:380
149950,0migration/030179-21kthreadcore21:40:390
149950,0migration/028019-21cpu22:00:320
149950,0migration/025788-21latency_hist22:55:200
149950,0migration/022670-21timerandwakeup21:35:440
149950,0migration/022496-21kthreadcore20:10:370
149950,0migration/018743-21kthreadcore00:40:370
149950,0migration/018444-21kthreadcore22:30:380
149950,0migration/018280-21kthreadcore19:45:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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