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2025-11-22 - 00:26
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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 rackaslot8.osadl.org (updated Fri Nov 21, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18442294234,48sleep10-21swapper/107:06:211
19882274241,20sleep30-21swapper/307:08:113
18452268216,38sleep20-21swapper/207:06:212
20502267208,19sleep00-21swapper/007:08:490
253942620,0sleep00-21swapper/012:33:470
234632620,0sleep00-21swapper/009:35:180
76222590,0sleep10-21swapper/111:58:271
311792590,0sleep10-21swapper/110:32:551
310362590,0sleep20-21swapper/211:51:282
76772580,0sleep20-21swapper/207:20:112
39922560,0sleep00-21swapper/011:05:010
216752180,0sleep00-21swapper/009:34:510
231642170,0sleep228-21ksoftirqd/212:32:012
226599160,8cyclictest31997-21grep08:15:000
226599160,11cyclictest8851-21users10:40:230
226599154,9cyclictest19982-21systemd-journal12:39:490
226599150,9cyclictest0-21swapper/007:45:100
226599150,12cyclictest9006-21ssh12:22:110
226599150,12cyclictest5967-21ssh09:47:220
226599150,12cyclictest4587-21cat09:20:110
226599150,12cyclictest31120-21ssh10:32:510
226599150,11cyclictest28055-21ssh11:23:320
226599150,11cyclictest24966-21ssh11:47:090
226599150,10cyclictest27401-21sshd08:03:510
226599150,10cyclictest24460-21diskmemload10:51:150
226599150,10cyclictest11641-21smartctl09:25:180
182342150,0sleep2271rcuc/211:15:202
283882140,0sleep20-21swapper/209:40:032
226599140,9cyclictest31801-21proc_pri12:15:190
226599140,9cyclictest29378-21grep09:40:170
226599140,9cyclictest22674-21open_files10:00:170
226599140,9cyclictest15211-21cron08:50:000
226599140,8cyclictest19982-21systemd-journal07:35:420
226599140,11cyclictest7286-21ssh11:58:090
226599140,11cyclictest6549-21ssh10:39:500
226599140,11cyclictest6518-21mailstats07:15:200
226599140,11cyclictest5877-21ssh10:12:540
226599140,11cyclictest3315-21missed_timers07:10:170
226599140,11cyclictest3315-21missed_timers07:10:170
226599140,11cyclictest32690-21ssh09:15:320
226599140,11cyclictest30358-21ssh10:59:110
226599140,11cyclictest30188-21ssh11:50:390
226599140,11cyclictest30109-21ssh10:05:450
226599140,11cyclictest27319-21ssh12:12:230
226599140,11cyclictest27155-21ssh09:11:010
226599140,11cyclictest24460-21diskmemload11:08:280
226599140,11cyclictest24460-21diskmemload11:08:280
226599140,11cyclictest19675-21ssh11:16:460
226599140,11cyclictest19602-21ssh12:06:340
226599140,11cyclictest1952-21ssh11:28:580
226599140,11cyclictest16960-21sh10:21:310
226599140,11cyclictest16700-21sed09:55:190
226599140,11cyclictest15951-21ssh11:14:510
226599140,11cyclictest15592-21ssh10:46:070
226599140,11cyclictest13253-21ssh09:53:240
226599140,11cyclictest13095-21ssh10:19:020
226599140,11cyclictest12242-21ssh11:36:270
226599140,11cyclictest12093-21ssh12:01:000
226599130,8cyclictest3381-21cat08:20:220
226599130,8cyclictest20700-21ssh10:25:120
226599130,12cyclictest20221-21apt-get09:00:020
226599130,12cyclictest0-21swapper/011:30:110
226599130,10cyclictest16112-21cpuspeed_turbos11:40:130
226599130,10cyclictest14514-21ssh12:25:490
226599120,9cyclictest10415-21taskset08:36:160
226599120,8cyclictest7623-21processes08:30:200
226599120,8cyclictest29741-11brltty07:41:570
226599120,8cyclictest24436-21find07:55:170
226599120,7cyclictest385-21head08:15:170
226599120,7cyclictest28003-21cstates08:05:100
226599120,7cyclictest0-21swapper/009:09:590
226599120,7cyclictest0-21swapper/008:27:510
226599120,11cyclictest11027-21apt-get08:40:120
200162120,0sleep10-21swapper/111:42:581
226599113,7cyclictest11736-21in:imuxsock09:00:000
226599110,7cyclictest7602-21grep07:20:110
226599110,7cyclictest16110-21basename08:50:140
226599110,7cyclictest11661-21sshd07:28:460
226599110,1cyclictest0-21swapper/007:50:120
226599110,10cyclictest12057-21apt-get07:30:110
164232110,0sleep30-21swapper/311:15:053
22729998,1cyclictest28-21ksoftirqd/208:55:012
22729995,3cyclictest19982-21systemd-journal09:24:092
23588280,0sleep10-21swapper/112:10:121
22779983,4cyclictest0-21swapper/311:03:533
22779983,4cyclictest0-21swapper/310:45:133
22779983,3cyclictest19982-21systemd-journal09:50:033
22729985,2cyclictest28-21ksoftirqd/208:25:002
22729984,3cyclictest19982-21systemd-journal08:39:002
22729984,3cyclictest19982-21systemd-journal08:09:082
22699984,3cyclictest19982-21systemd-journal12:08:061
22699983,3cyclictest19982-21systemd-journal11:15:091
20154280,0sleep20-21swapper/209:00:002
19130280,1sleep30-21swapper/309:31:493
7419270,0sleep10-21swapper/108:30:171
22779976,1cyclictest24460-21diskmemload12:22:163
22779974,2cyclictest18639-21tr08:55:183
22779973,3cyclictest7661-21lldpd07:59:083
22779973,3cyclictest20504-21ntpq10:50:193
22779973,3cyclictest19982-21systemd-journal11:25:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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