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2026-04-08 - 13:55
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Wed Apr 08, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23400492322280,27sleep00-21swapper/019:06:150
23400752264221,29sleep10-21swapper/119:06:321
250276721590,5sleep02502687-21munin-run23:50:010
25034002690,4sleep02503362-40apt-check23:50:120
24181132640,5sleep02418000-21python321:50:010
234053599632,42cyclictest2474953-21apt-get23:10:130
234053599632,41cyclictest2392913-21apt-get21:15:110
234053599622,42cyclictest2461057-21apt-get22:50:110
179699600,1rtkit-daemon1795-21rtkit-daemon21:34:270
234053599593,38cyclictest2352991-21apt-get19:40:110
234053599583,38cyclictest2400061-21apt-get21:25:140
234053599580,5cyclictest2397319-21/usr/sbin/munin21:20:190
179699570,3rtkit-daemon1795-21rtkit-daemon20:50:000
179699570,3rtkit-daemon0-21swapper/020:30:060
234053599567,30cyclictest2436197-21apt-get22:15:110
234053599567,30cyclictest2346874-21seq19:24:430
234053599560,3cyclictest2361376-21cat20:00:190
179699560,3rtkit-daemon1795-21rtkit-daemon23:39:550
179699560,3rtkit-daemon1795-21rtkit-daemon23:03:560
234053599552,30cyclictest2471468-21apt-get23:05:130
179699550,3rtkit-daemon0-21swapper/020:53:060
234053599541,29cyclictest2524652-21apt-get00:20:100
2340535995411,28cyclictest2511268-21rt-features00:00:240
234053599541,11cyclictest2412261-21ssh21:40:410
234053599540,7cyclictest2498332-21ssh23:43:190
179699540,3rtkit-daemon1795-21rtkit-daemon19:58:440
179699540,3rtkit-daemon0-21swapper/021:36:450
234053599539,28cyclictest2422681-21idleruntime21:55:160
234053599535,31cyclictest2388888-21diskmemload22:26:290
234053599531,7cyclictest2450585-21ssh22:35:090
234053599530,7cyclictest2460168-21ssh22:48:250
179699530,3rtkit-daemon0-21swapper/022:01:460
234053599521,7cyclictest2448706-21ssh22:31:550
2340535995211,27cyclictest2430040-21sh22:05:210
234053599520,9cyclictest2480358-21ssh23:16:350
234053599512,23cyclictest2418619-21apt-get21:50:110
234053599511,35cyclictest2389165-21apt-get21:10:130
179699510,3rtkit-daemon1795-21rtkit-daemon22:40:090
179699510,3rtkit-daemon1795-21rtkit-daemon19:47:590
179699510,18rtkit-daemon1795-21rtkit-daemon21:00:110
234053599502,5cyclictest2521067-21apt-get00:15:120
234053599500,38cyclictest2479286-21kworker/u8:200:13:220
179699500,3rtkit-daemon1795-21rtkit-daemon23:33:280
179699500,3rtkit-daemon1795-21rtkit-daemon22:59:340
234053599492,23cyclictest2365228-21apt-get20:10:140
234053599491,9cyclictest2387744-21memory21:05:190
234053599491,3cyclictest2538036-21ssh00:38:230
234053599490,3cyclictest2362547-21apt-get20:05:270
234053599488,29cyclictest2515453-21ssh00:06:190
234053599481,3cyclictest2528988-21ntp_states00:25:230
234053599481,3cyclictest2356885-21apt-get19:50:120
234053599481,33cyclictest2388888-21diskmemload22:12:120
234053599480,7cyclictest2486934-21ssh23:25:540
179699480,4rtkit-daemon1795-21rtkit-daemon23:20:400
179699480,3rtkit-daemon1795-21rtkit-daemon00:26:141
179699480,3rtkit-daemon0-21swapper/019:32:530
234053599472,29cyclictest2340668-21apt-get19:10:140
234053599471,8cyclictest2388888-21diskmemload22:20:540
234053599471,7cyclictest2368921-21apt-get20:20:030
234053599471,4cyclictest2532320-21ntp_states00:30:220
234053599470,8cyclictest2352304-21users19:35:250
234053599460,4cyclictest763-21dbus-daemon21:00:010
234053599460,4cyclictest2506860-21ssh23:55:140
234053599460,3cyclictest2375615-21df_inode20:35:150
234053599460,3cyclictest2343192-21apt19:15:100
2340540994512,8cyclictest26-21ksoftirqd/121:25:011
234053599451,3cyclictest2372277-21ntp_states20:25:230
234053599440,8cyclictest2348182-21find19:25:240
234053599440,3cyclictest2377890-21irqstats20:40:190
234053599440,3cyclictest2367516-21fw_packets20:15:170
2340540994313,13cyclictest26-21ksoftirqd/100:00:011
2340540994311,7cyclictest26-21ksoftirqd/121:25:011
179699420,3rtkit-daemon0-21swapper/122:29:381
179699420,3rtkit-daemon0-21swapper/119:41:421
234054099370,36cyclictest0-21swapper/122:45:471
234054099366,7cyclictest2410815-21apt-get21:40:131
234054099365,7cyclictest2510288-21apt-get00:00:131
234054099363,12cyclictest2479061-21cat23:15:181
234054099356,6cyclictest2439753-21apt-get22:20:131
234054099355,8cyclictest26-21ksoftirqd/121:45:241
179699350,3rtkit-daemon0-21swapper/020:53:561
234054099346,8cyclictest26-21ksoftirqd/122:14:551
234054099345,13cyclictest2365814-21sed20:10:181
234054099343,8cyclictest2388888-21diskmemload22:15:221
234054099341,7cyclictest2388888-21diskmemload23:10:121
179699340,4rtkit-daemon2427126-21ssh22:00:481
234054099334,7cyclictest2464556-21apt-get22:55:121
234054099333,6cyclictest2499331-21apt-get23:45:111
234054099332,7cyclictest2496855-21sed23:40:241
179699330,3rtkit-daemon0-21swapper/021:51:021
234054099329,7cyclictest26-21ksoftirqd/123:35:241
234054099328,8cyclictest26-21ksoftirqd/123:25:011
234054099324,9cyclictest26-21ksoftirqd/119:45:211
234054099323,7cyclictest26-21ksoftirqd/121:05:211
234054099323,7cyclictest26-21ksoftirqd/120:00:121
234054099323,7cyclictest2403670-21apt-get21:30:121
234054099323,6cyclictest26-21ksoftirqd/120:45:001
234054099322,6cyclictest26-21ksoftirqd/120:35:001
2340540993216,9cyclictest2429245-21apt-get22:05:131
234054099320,15cyclictest2468120-21/usr/sbin/munin23:00:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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