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2026-04-18 - 11:24
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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 Sat Apr 18, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
87782205189,11sleep10-21swapper/119:09:321
85402192150,37sleep00-21swapper/019:06:270
85732183165,13sleep30-21swapper/319:06:543
65842171152,14sleep20-21swapper/219:05:032
272242460,0sleep00-21swapper/022:40:000
169082460,0sleep10-21swapper/123:21:561
131892460,0sleep30-21swapper/322:00:443
215312440,0sleep10-21swapper/122:20:281
35022380,0sleep10-21swapper/100:19:371
162242100,0sleep20-21swapper/222:02:362
90149982,3cyclictest9886-21awk23:35:000
90149982,3cyclictest2479-21perf00:35:000
90149981,3cyclictest0-21swapper/000:25:000
90149971,3cyclictest23715-21munin-run23:10:000
90149971,3cyclictest14737-21perf21:15:010
90209960,5cyclictest0-21swapper/200:35:112
90149960,5cyclictest0-21swapper/019:35:110
90149960,5cyclictest0-21swapper/019:10:120
90149960,1cyclictest0-21swapper/020:15:140
90249955,0cyclictest27476-21kworker/3:223:55:093
90249955,0cyclictest27476-21kworker/3:223:10:213
90249955,0cyclictest27476-21kworker/3:222:47:593
90249955,0cyclictest13385-21kworker/3:022:36:473
90249955,0cyclictest13385-21kworker/3:022:14:233
90249955,0cyclictest13385-21kworker/3:021:18:243
90249955,0cyclictest0-21swapper/322:26:003
90249951,4cyclictest802-21snmpd00:35:203
90249950,5cyclictest28718-21apt-get00:00:013
90249950,5cyclictest24698-21ssh00:13:583
90249950,5cyclictest0-21swapper/323:15:193
90249950,5cyclictest0-21swapper/321:59:573
90249950,5cyclictest0-21swapper/321:25:013
90249950,3cyclictest7536-21grep22:30:133
90249950,0cyclictest0-21swapper/300:30:063
90209954,1cyclictest0-21swapper/222:21:552
90209954,1cyclictest0-21swapper/221:40:112
90209951,3cyclictest0-21swapper/200:25:122
90209950,5cyclictest0-21swapper/223:38:372
90209950,5cyclictest0-21swapper/223:30:192
90209950,5cyclictest0-21swapper/223:15:542
90209950,5cyclictest0-21swapper/223:02:152
90159951,2cyclictest0-21swapper/121:35:121
90159951,2cyclictest0-21swapper/120:20:111
90159951,2cyclictest0-21swapper/100:30:121
90159950,5cyclictest0-21swapper/100:27:431
90159950,5cyclictest0-21swapper/100:12:181
90149951,3cyclictest7523-21ssh23:17:280
90149951,2cyclictest0-21swapper/023:45:110
90149950,5cyclictest23922-21ssh22:54:010
90149950,5cyclictest0-21swapper/023:35:450
90149950,5cyclictest0-21swapper/022:20:120
90149950,5cyclictest0-21swapper/000:25:110
90149950,0cyclictest0-21swapper/021:55:570
8133250,0sleep00-21swapper/023:01:420
7982250,4sleep08080-21ntp_states00:05:160
10043250,0sleep10-21swapper/100:38:281
90249944,0cyclictest27476-21kworker/3:200:28:443
90249944,0cyclictest27476-21kworker/3:200:17:333
90249944,0cyclictest13385-21kworker/3:021:51:593
90249944,0cyclictest13385-21kworker/3:019:26:263
90249944,0cyclictest0-21swapper/323:02:303
90249944,0cyclictest0-21swapper/322:22:573
90249944,0cyclictest0-21swapper/320:43:163
90249944,0cyclictest0-21swapper/320:19:593
90249942,2cyclictest802-21snmpd00:23:073
90249942,2cyclictest20631-21cat20:35:153
90249942,1cyclictest13596-21ssh23:20:173
90249942,1cyclictest0-21swapper/321:30:123
90249941,2cyclictest0-21swapper/320:10:123
90249940,4cyclictest4666-21/usr/sbin/munin20:05:133
90249940,4cyclictest29613-21/usr/sbin/munin20:55:123
90249940,4cyclictest15878-21apt-get22:50:123
90249940,4cyclictest0-21swapper/323:42:183
90249940,4cyclictest0-21swapper/323:35:113
90249940,4cyclictest0-21swapper/323:06:383
90249940,4cyclictest0-21swapper/322:55:133
90249940,4cyclictest0-21swapper/322:41:493
90249940,4cyclictest0-21swapper/322:18:363
90249940,4cyclictest0-21swapper/322:05:113
90249940,4cyclictest0-21swapper/321:25:423
90249940,4cyclictest0-21swapper/300:05:153
90249940,3cyclictest9889-21grep19:10:143
90249940,3cyclictest7945-21latency_hist23:50:013
90249940,3cyclictest5354-21runrttasks21:41:153
90249940,3cyclictest3907-21awk21:05:193
90249940,3cyclictest29038-21users19:45:203
90249940,3cyclictest28447-21sh23:27:463
90249940,3cyclictest27085-21cat20:50:003
90249940,3cyclictest2084-21cat21:05:013
90249940,3cyclictest18319-21ntp_states20:30:173
90249940,3cyclictest14994-21sh23:53:063
90249940,3cyclictest11566-21munin-node19:15:013
90249940,3cyclictest0-21swapper/319:35:103
90249940,1cyclictest2200-21/usr/sbin/munin20:00:193
90249940,1cyclictest0-21swapper/323:30:123
90209944,0cyclictest0-21swapper/223:22:452
90209944,0cyclictest0-21swapper/222:55:242
90209944,0cyclictest0-21swapper/222:41:432
90209944,0cyclictest0-21swapper/222:34:532
90209944,0cyclictest0-21swapper/221:48:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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