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2026-05-01 - 04:46
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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
Characteristics of the 50 highest latencies:
System rackcslot4.osadl.org (updated Fri May 01, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23504192309268,26sleep00-21swapper/019:09:360
23502472303262,27sleep10-21swapper/119:07:451
179699600,6rtkit-daemon1795-21rtkit-daemon23:20:331
179699580,4rtkit-daemon1795-21rtkit-daemon00:34:430
179699580,3rtkit-daemon0-21swapper/023:56:531
179699570,3rtkit-daemon1795-21rtkit-daemon23:58:030
179699570,3rtkit-daemon0-21swapper/019:11:461
179699560,21rtkit-daemon2350628-21cyclictest20:21:261
24222462540,8sleep013-21ksoftirqd/021:39:450
179699530,5rtkit-daemon2350473-21apt-get19:10:040
2350639995212,10cyclictest2398425-21diskmemload23:50:000
2350639995210,12cyclictest2394516-21/usr/sbin/munin21:00:000
179699520,4rtkit-daemon1795-21rtkit-daemon21:46:331
2350639995112,10cyclictest2374999-21unin-run20:10:000
2350639995111,14cyclictest2467059-21cat22:40:000
179699510,5rtkit-daemon1795-21rtkit-daemon19:15:450
235063999509,10cyclictest2406817-21/usr/sbin/munin21:20:000
2350639995012,11cyclictest2398425-21diskmemload21:30:210
179699500,3rtkit-daemon1795-21rtkit-daemon22:50:240
235063999489,11cyclictest2501294-21latency_hist23:25:010
2350639994816,11cyclictest2398425-21diskmemload22:45:130
2350639994812,10cyclictest2442460-21systemctl22:05:240
2350639994812,10cyclictest2442460-21systemctl22:05:230
2350639994811,10cyclictest2398425-21diskmemload23:40:450
2350639994810,9cyclictest2536638-21latency_hist00:15:010
2350639994810,13cyclictest2398438-21/usr/sbin/munin21:10:010
2350639994810,11cyclictest2449880-21run-parts22:15:270
2350639994712,10cyclictest2470750-21python322:45:010
2350639994711,10cyclictest2431061-21ntpq21:50:220
2350639994627,11cyclictest2486259-21apt-get23:05:160
2350639994626,11cyclictest2509367-21apt-get23:35:150
2350639994612,10cyclictest2493868-21fschecks_count23:15:170
2350639994610,8cyclictest2523918-21grep23:55:000
2350639994610,8cyclictest2380979-21date20:25:010
2350639994610,14cyclictest2506201-21grep23:30:200
2350639994610,10cyclictest2438695-21grep22:00:240
2350639994610,10cyclictest2386793-21sed20:40:010
179699460,4rtkit-daemon1795-21rtkit-daemon23:27:290
2350639994514,8cyclictest2543210-21ssh00:23:320
2350639994514,10cyclictest2532298-21ssh00:06:570
2350639994512,13cyclictest2381473-21/usr/sbin/munin20:25:160
2350639994511,9cyclictest2412083-21grep21:25:250
2350639994511,11cyclictest2378143-21grep20:15:230
2350639994511,10cyclictest2446133-21grep22:10:240
2350639994510,13cyclictest2489802-21rm23:10:060
2350639994510,13cyclictest2389887-21grep20:45:220
2350639994510,12cyclictest2483027-21if_enp2s023:00:190
2350639994510,12cyclictest2362507-21grep19:35:220
2350639994510,11cyclictest2528338-21sort00:00:180
2350639994510,11cyclictest2457236-21plymouth22:25:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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