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2025-12-19 - 13:33
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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 rackeslot8.osadl.org (updated Fri Dec 19, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25790442240,1sleep10-21swapper/123:20:191
2251819992219,1cyclictest0-21swapper/300:00:003
2251819992118,1cyclictest0-21swapper/321:45:003
2251819992117,1cyclictest0-21swapper/320:35:013
2251819992017,1cyclictest0-21swapper/321:30:003
2251819992017,1cyclictest0-21swapper/300:30:003
2251819992016,1cyclictest0-21swapper/300:10:003
225181999201,13cyclictest2293186-21taskset19:40:013
2251819991916,1cyclictest0-21swapper/323:35:163
2251819991916,1cyclictest0-21swapper/323:35:163
2251819991916,1cyclictest0-21swapper/323:10:003
2251819991916,1cyclictest0-21swapper/321:20:173
2251819991916,1cyclictest0-21swapper/321:20:173
225181999191,14cyclictest2467350-21turbostat21:55:003
225181999191,14cyclictest2279787-21turbostat19:30:003
2251819991812,4cyclictest2519040-21turbostat22:39:553
225181999181,13cyclictest2486583-21taskset22:10:003
225181999181,13cyclictest2421054-21taskset21:15:223
225181999181,13cyclictest2311323-21taskset19:50:233
225181999181,13cyclictest2268241-21taskset19:20:143
225181999180,13cyclictest2622209-21turbostat23:55:003
225181999179,4cyclictest2654903-21turbostat00:20:003
2251819991714,1cyclictest0-21swapper/320:45:173
2251819991714,1cyclictest0-21swapper/300:00:203
225181999171,13cyclictest2647610-21chrt00:10:223
225181999171,13cyclictest2538211-21chrt22:49:483
225181999171,13cyclictest2350850-21turbostat20:29:553
225181999171,12cyclictest2570532-21taskset23:15:003
225181999171,12cyclictest2493274-21sleep22:15:003
225181999171,12cyclictest2376684-21turbostat20:45:003
225181999170,8cyclictest2258415-21taskset19:15:023
225181999170,14cyclictest2286519-21chrt19:35:123
225181999170,12cyclictest2402670-21taskset21:05:013
22574902160,9sleep22257655-21timerwakeupswit19:10:242
2251819991613,1cyclictest0-21swapper/320:55:173
2251819991613,1cyclictest0-21swapper/320:50:193
225181999161,12cyclictest2680547-21taskset00:38:353
225181999161,12cyclictest2615681-21taskset23:49:113
225181999161,12cyclictest2543462-21taskset22:50:203
225181999161,12cyclictest2512307-21chrt22:26:233
225181999161,12cyclictest2499628-21taskset22:19:103
225181999161,12cyclictest2480090-21taskset22:04:113
225181999161,12cyclictest2473441-21chrt21:56:143
225181999161,12cyclictest2461047-21chrt21:50:023
225181999161,12cyclictest2441418-21taskset21:35:143
225181999161,12cyclictest2440713-21chrt21:30:373
225181999161,12cyclictest2414430-21taskset21:10:223
225181999161,12cyclictest2402384-21chrt21:04:293
225181999161,12cyclictest2285863-21taskset19:30:233
225181999161,11cyclictest2589364-21taskset23:25:303
225181999161,11cyclictest2344385-21sleep20:20:003
225181999160,12cyclictest2577095-21taskset23:20:093
225181999160,11cyclictest2603070-21taskset23:40:013
26685342151,5sleep12669458-21irqstats00:30:171
225181999155,7cyclictest23486162sleep320:20:223
2251819991513,0cyclictest0-21swapper/319:45:063
2251819991512,1cyclictest0-21swapper/323:00:193
2251819991512,1cyclictest0-21swapper/319:15:023
225181999151,11cyclictest2661052-21taskset00:21:123
225181999151,11cyclictest2590696-21taskset23:30:153
225181999151,11cyclictest2576489-21taskset23:15:493
225181999151,11cyclictest2518906-21taskset22:33:383
225181999151,11cyclictest2505798-21taskset22:20:383
225181999151,11cyclictest2337623-21taskset20:10:513
225181999151,11cyclictest2324238-21taskset20:00:213
225181999151,11cyclictest2312420-21taskset19:55:123
225181999150,12cyclictest2367354-21chrt20:35:193
225181999150,12cyclictest2331499-21chrt20:09:593
225181999150,11cyclictest2673886-21taskset00:30:553
26539802141,10sleep02654039-21ntp_states00:15:210
26095552141,10sleep02609590-21apt-get23:45:120
225181999141,10cyclictest2544877-21taskset22:55:053
225181999140,11cyclictest2531527-21taskset22:41:023
307598130,9rtkit-daemon714-21snmpd20:20:322
307598130,8rtkit-daemon2273453-21latency_hist19:25:012
24870772131,8sleep22487110-21apt-get22:10:122
307598120,3rtkit-daemon2655193-21apt-get00:20:142
307598120,2rtkit-daemon217-21plymouthd21:00:102
307598120,2rtkit-daemon0-21swapper/223:20:282
25568482120,9sleep12557093-21awk23:00:251
24337782120,9sleep02433818-21/usr/sbin/munin21:25:220
307598110,7rtkit-daemon468-21systemd-logind00:36:442
307598110,5rtkit-daemon2286878-21hddtemp_smartct19:35:162
25413372110,8sleep22543461-21grep22:50:202
25253072110,2sleep00-21swapper/022:38:360
22611742110,8sleep12262116-21tr19:15:161
307598100,6rtkit-daemon493-21gmain23:14:402
307598100,6rtkit-daemon316-21systemd-udevd20:11:442
307598100,3rtkit-daemon716-21ntpd00:00:262
307598100,3rtkit-daemon714-21snmpd21:05:582
307598100,2rtkit-daemon217-21plymouthd22:41:152
307598100,1rtkit-daemon0-21swapper/222:55:092
26220942101,1sleep10-21swapper/123:53:461
24172652100,7sleep12419248-21grep21:15:171
23701682101,6sleep21-21systemd20:40:002
22456272106,1sleep20-21swapper/219:05:152
30759890,6rtkit-daemon493-21gmain20:41:292
30759890,5rtkit-daemon217-21plymouthd19:49:202
30759890,4rtkit-daemon299-21systemd-journal00:15:442
30759890,4rtkit-daemon2589650-21sshd23:29:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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