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2026-04-17 - 15:13
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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 rack5slot2.osadl.org (updated Fri Apr 17, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29562196179,12sleep30-21swapper/307:08:013
30772195180,11sleep10-21swapper/107:09:321
29372188170,13sleep00-21swapper/007:07:460
28922174157,12sleep20-21swapper/207:07:122
102112680,0sleep20-21swapper/210:02:022
93172540,1sleep30-21swapper/310:49:313
125722500,0sleep10-21swapper/111:38:371
314432470,0sleep10-21swapper/110:44:291
124612450,0sleep10-21swapper/107:25:161
50612440,0sleep00-21swapper/010:15:170
284262440,0sleep10-21swapper/109:55:181
222362430,0sleep20-21swapper/211:59:282
326399111,0cyclictest0-21swapper/212:34:232
311422110,0sleep10-21swapper/110:28:241
325799102,4cyclictest31350-21perf09:10:010
151512100,0sleep10-21swapper/110:35:561
32639992,6cyclictest7425-21latency_hist12:39:592
24855290,0sleep10-21swapper/111:12:391
32639982,6cyclictest29404-21grep09:05:132
32639982,5cyclictest19798-21ssh10:54:412
32639982,1cyclictest901-21ssh09:57:382
32639980,1cyclictest7334-21ssh11:35:242
32639980,1cyclictest3307-21ntp_states10:30:172
32639980,1cyclictest32336-21munin-run10:45:012
32639980,1cyclictest31519-21munin-run12:19:592
32639980,1cyclictest28611-21dump-pmu-power09:40:002
32639980,1cyclictest26374-21munin-run09:00:002
32639980,1cyclictest25324-21munin-run10:10:002
32639980,1cyclictest23690-21ssh10:55:482
32639980,1cyclictest21482-21perf07:45:012
32639980,1cyclictest21415-21cron08:50:002
32639980,1cyclictest18535-21apt11:10:002
32639980,1cyclictest13359-21munin-run10:20:002
32639980,1cyclictest0-21swapper/209:10:122
32639980,1cyclictest0-21swapper/207:35:022
32639980,0cyclictest0-21swapper/212:10:102
32639971,1cyclictest9651-21awk09:30:162
32639971,1cyclictest802-21snmpd08:51:592
32639971,1cyclictest649-21gltestperf12:20:132
32639971,1cyclictest31720-21cat09:25:162
32639971,1cyclictest20990-21grep11:10:202
32639971,1cyclictest20925-21gltestperf09:20:162
32639971,1cyclictest14655-21tune2fs10:20:132
32639971,1cyclictest10195-21cat08:25:152
32639971,1cyclictest10195-21cat08:25:142
32639970,1cyclictest7823-21perl11:20:142
32639970,1cyclictest5651-21munin-run07:15:002
32639970,1cyclictest3183-21ssh11:50:092
32639970,1cyclictest31631-21cut08:05:112
32639970,1cyclictest31054-21apt-get11:00:102
32639970,1cyclictest30959-21sed08:00:202
32639970,1cyclictest29726-21df_inode11:15:122
32639970,1cyclictest27181-21ssh11:30:032
32639970,1cyclictest26401-21grep10:10:142
32639970,1cyclictest25499-21ssh11:45:102
32639970,1cyclictest25415-21tr10:25:162
32639970,1cyclictest24208-21ssh11:28:222
32639970,1cyclictest23122-21cron12:00:012
32639970,1cyclictest2264-21hddtemp_smartct12:05:142
32639970,1cyclictest17807-21ssh11:40:342
32639970,1cyclictest16431-21apt-config07:35:002
32639970,1cyclictest12977-21ssh12:25:532
32639970,1cyclictest12830-21perl10:35:112
32639970,1cyclictest12271-21perl07:25:152
32639970,1cyclictest11825-21users09:15:212
32639970,1cyclictest11380-21sleep07:25:002
32639970,1cyclictest10075-21ssh09:45:582
32639970,1cyclictest0-21swapper/209:00:112
32579971,3cyclictest13846-21munin-run07:30:010
32639961,1cyclictest6126-21tune2fs07:15:012
32639961,1cyclictest26742-21basename07:55:132
32639961,1cyclictest11762-21aten2_r5power_c08:30:112
32639960,2cyclictest14232-21aten2_r5power_c08:35:122
32639960,1cyclictest7337-21df08:20:122
32639960,1cyclictest4625-21cut08:15:122
32639960,1cyclictest32548-21ssh10:45:012
32639960,1cyclictest28863-21ssh09:40:012
32639960,1cyclictest24347-21cat07:50:122
32639960,1cyclictest21997-21grep07:45:102
32639960,1cyclictest1784-21apt-config08:10:012
32639960,1cyclictest17162-21ssh09:50:092
32639960,1cyclictest16919-21tr08:40:122
32579962,4cyclictest25031-21munin-run11:45:000
32579960,5cyclictest0-21swapper/011:05:100
32579960,1cyclictest24740-21ssh09:21:520
32679955,0cyclictest0-21swapper/310:50:573
32679951,4cyclictest57150irq/125-eth009:33:123
32679950,5cyclictest0-21swapper/311:23:153
32679950,0cyclictest0-21swapper/309:46:383
32589950,5cyclictest0-21swapper/112:35:121
32589950,5cyclictest0-21swapper/109:52:151
32579955,0cyclictest0-21swapper/011:12:180
32579954,1cyclictest0-21swapper/011:29:210
32579950,5cyclictest0-21swapper/012:03:310
32579950,5cyclictest0-21swapper/009:40:110
32579950,5cyclictest0-21swapper/009:10:140
32579950,4cyclictest0-21swapper/011:20:110
32579950,0cyclictest0-21swapper/011:32:230
32679944,0cyclictest23036-21kworker/3:209:21:533
32679944,0cyclictest17438-21kworker/3:012:21:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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